This is a multi-part message in MIME format.
--===============5735132933186904103==
boundary="----=_NextPart_000_00DD_01D1DE0D.CDCF48B0"
This is a multi-part message in MIME format.
------=_NextPart_000_00DD_01D1DE0D.CDCF48B0
charset="utf-8"
Content-Transfer-Encoding: quoted-printable
Absolutely correct but removing the scratches and maintaining a flat =
surface will not change the end clearance. The plate started out flat =
and this action restores the flat surface. The rotor to end plate =
clearance is controlled by the rotor assembly tolerances and the pump =
body and should be checked.
JVV
From: Barr, Scott=20
Sent: Thursday, July 14, 2016 10:05 AM
To: Jerry Van Vlack ; Brian Schirano ; 'marty' ; FOT List=20
Subject: RE: [Fot] Oil Pressure Conundrum
<< careful removal of all of the scratches and worn areas of the bottom =
plate on the pump where the rotors set >>
=20
And when you do that, be sure to check on the proper end clearance of =
the rotors to the end plate. There=E2=80=99s a spec on that in the =
manual.
=20
Scott (B.)
=20
From: Fot [mailto:fot-bounces@autox.team.net] On Behalf Of Jerry Van =
Vlack
Sent: Thursday, July 14, 2016 4:56 AM
To: Brian Schirano <bschirano@yahoo.com>; 'marty' <trmarty@hotmail.com>; =
FOT List <fot@autox.team.net>
Subject: Re: [Fot] Oil Pressure Conundrum
=20
Marty, I experienced low to no oil pressure at idle on my 4A street car =
several years ago, and what fixed it for me was new rod bearings and =
mostly I think was a close inspection of the oil pump and maintaining =
those clearances. So new rotor assembly and a careful removal of all of =
the scratches and worn areas of the bottom plate on the pump where the =
rotors set. Emery paper and a flat piece of glass and a lot of hand work =
getting it flat. I am assuming the oil pump is similar to a 4a pump in =
it=E2=80=99s construction. Many highway miles later hot idle is 30 or =
above and at 3000 rpm it=E2=80=99s been a steady 65 to 70 pounds. Maybe =
look there if you haven't already done so.
=20
JVV
=20
From: Brian Schirano=20
Sent: Wednesday, July 13, 2016 8:12 AM
To: 'marty' ; FOT List=20
Subject: Re: [Fot] Oil Pressure Conundrum
=20
Marty, I think Peter is right. The GT motor I am about to rebuild had =
similar symptoms. Great pressure cold, 75-80, then dropping to 20-25 hot =
at idle, sometimes less and I had to keep RPMs up to ensure lubrication. =
Uppon teardown, I had a a couple of big end rod bearings showing some =
copper, and others indicating wear also, all on the compression stroke =
side (opposite side of oil journal). Mains were all OK. I run street =
Mobil One 15-50, but think I will change after rebuild.
Would welcome a few race oil opinions from FOT
=20
Best
Brian
=20
26A GT6+, 28 TR6
Brian Schirano
585-305-0349 Cell=20
BSchirano@yahoo.com
=20
-------------------------------------------------------------------------=
-------
From: Peter Vucinic <pvucinic@netspace.net.au>
To: 'marty' <trmarty@hotmail.com>; 'FOT' <fot@autox.team.net>=20
Sent: Tuesday, July 12, 2016 9:54 AM
Subject: Re: [Fot] Oil Pressure Conundrum
=20
Marty,
Sounds like some of the bearings clearances are larger than they should =
be and you are losing oil pressure as the oil warms up and starts =
leaking through the journal(s) faster once you are at operating temps.=20
If you are running an aggressive cam profile and/or high valve spring =
rates? This will adversely affect cam bearing wear for sure.
=20
=20
"You can Make a Small Fortune From Motor Racing. As long as You Started =
With A Lage Fortune!"
Kind Regards
Peter Vucinic
TR4 - TR7 V8 - Spitfire MkII
_______________________________________________
fot@autox.team.net
=20
http://www.fot-racing.com
=20
Archive: http://www.team.net/archive
=20
=20
=20
=20
From: Fot [mailto:fot-bounces@autox.team.net] On Behalf Of marty
Sent: Tuesday, 12 July 2016 4:09 AM
To: FOT
Subject: [Fot] Oil Pressure Conundrum
=20
=20
I could use some opinions. Some history. Spitfire small journal 1296 =
engine, rebuilt 6 race weekends ago included all new bearings. I tore it =
down this spring to check it over prior to last weekend PVGP event. Cam =
and crank end floats were to spec. Rod and main bearings checked between =
.002 and .003 clearance. I do not have the actual numbers in front of me =
at the present. Cam bearings appeared to have some slight visual wear at =
the bottoms but I did not actually measure them. I run Brad Pen 20W50. =
Oil temps run 210 and water temps run 190. EGT are 1200/1250 range on =
track. I was fighting low oil pressure at running temps all weekend. =
Once my oil temps come up on track the pressure drops down to 35psi. If =
I add enough springs to the pressure relief valve I see over 125 psi =
cold so I am thinking my pump is putting out enough pressure. I tried =
shimming to get 50/60 cold at idle and it drops to 35 at operating temps =
at 7000 rpm. I tried a new pressure gage over the weekend and the =
numbers did not change. I am currently running an auxiliary oil line to =
the head, I removed it at one point over the weekend and it had no =
effect. I tried a new pressure relief valve assy and it had no effect. =
I believe this situation actually started a season ago because I added a =
washer to the pressure relief valve last season. I=E2=80=99m thinking =
it most likely is cam bearing wear even though all the bearings were =
fresh 6 events ago. Any guidance? One thing I did learn this weekend is =
my accusump pressure gage is incorrect. It was reading about 30 psi =
higher that my dash gage. I was thinking it was probably correct and my =
dash gage was wrong until I replaced my electric dash gage with a =
mechanical gage and its reading matched the gage I just disconnected. =
Oil pressure readings are taken at the port below the distributer.=20
=20
Side note. Car ran awesome. I ran a 2.22 at PittRace Sunday and that was =
6 seconds faster than my previous best lap there.=20
=20
Thanks,
Marty=20
=20
_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://www.team.net/archive
http://autox.team.net/mailman/options/fot/bschirano@yahoo.com
=20
-------------------------------------------------------------------------=
-------
_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://www.team.net/archive
http://autox.team.net/mailman/options/fot/jerryvv@roadrunner.com
------=_NextPart_000_00DD_01D1DE0D.CDCF48B0
charset="utf-8"
Content-Transfer-Encoding: quoted-printable
<HTML xmlns=3D"http://www.w3.org/TR/REC-html40"; xmlns:v =3D=20
"urn:schemas-microsoft-com:vml" xmlns:o =3D=20
"urn:schemas-microsoft-com:office:office" xmlns:w =3D=20
"urn:schemas-microsoft-com:office:word" xmlns:m =3D=20
"http://schemas.microsoft.com/office/2004/12/omml";><HEAD>
<META content=3D"text/html; charset=3Dutf-8" http-equiv=3DContent-Type>
<META name=3DGenerator content=3D"Microsoft Word 15 (filtered medium)">
<STYLE>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</STYLE>
<STYLE><!--
/* Font Definitions */
@font-face
{font-family:Helvetica;
panose-1:2 11 6 4 2 2 2 2 2 4;}
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:Consolas;
panose-1:2 11 6 9 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman",serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p
{mso-style-priority:99;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:12.0pt;
font-family:"Times New Roman",serif;}
p.yiv0474239424msonormal, li.yiv0474239424msonormal, =
div.yiv0474239424msonormal
{mso-style-name:yiv0474239424msonormal;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:12.0pt;
font-family:"Times New Roman",serif;}
p.yiv0474239424msochpdefault, li.yiv0474239424msochpdefault, =
div.yiv0474239424msochpdefault
{mso-style-name:yiv0474239424msochpdefault;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:12.0pt;
font-family:"Times New Roman",serif;}
span.yiv0474239424msohyperlink
{mso-style-name:yiv0474239424msohyperlink;}
span.yiv0474239424msohyperlinkfollowed
{mso-style-name:yiv0474239424msohyperlinkfollowed;}
span.yiv0474239424emailstyle18
{mso-style-name:yiv0474239424emailstyle18;}
p.yiv0474239424msonormal1, li.yiv0474239424msonormal1, =
div.yiv0474239424msonormal1
{mso-style-name:yiv0474239424msonormal1;
margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman",serif;}
span.yiv0474239424msohyperlink1
{mso-style-name:yiv0474239424msohyperlink1;
color:blue;
text-decoration:underline;}
span.yiv0474239424msohyperlinkfollowed1
{mso-style-name:yiv0474239424msohyperlinkfollowed1;
color:purple;
text-decoration:underline;}
span.yiv0474239424emailstyle181
{mso-style-name:yiv0474239424emailstyle181;
color:#1F497D;}
p.yiv0474239424msochpdefault1, li.yiv0474239424msochpdefault1, =
div.yiv0474239424msochpdefault1
{mso-style-name:yiv0474239424msochpdefault1;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:10.0pt;
font-family:"Times New Roman",serif;}
span.EmailStyle28
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></STYLE>
</HEAD>
<BODY lang=3DEN-US dir=3Dltr vLink=3Dpurple link=3Dblue>
<DIV dir=3Dltr>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: #000000">
<DIV>Absolutely correct but removing the scratches and maintaining a =
flat=20
surface will not change the end clearance. The plate started out flat =
and this=20
action restores the flat surface. The rotor to end plate clearance is =
controlled=20
by the rotor assembly tolerances and the pump body and should be =
checked.</DIV>
<DIV>JVV</DIV>
<DIV=20
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
"Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; =
DISPLAY: inline'>
<DIV style=3D"FONT: 10pt tahoma">
<DIV> </DIV>
<DIV style=3D"BACKGROUND: #f5f5f5">
<DIV style=3D"font-color: black"><B>From:</B> <A =
title=3Dsbarr@McCarty-Law.com=20
href=3D"mailto:sbarr@McCarty-Law.com";>Barr, Scott</A> </DIV>
<DIV><B>Sent:</B> Thursday, July 14, 2016 10:05 AM</DIV>
<DIV><B>To:</B> <A title=3Djerryvv@roadrunner.com=20
href=3D"mailto:jerryvv@roadrunner.com";>Jerry Van Vlack</A> ; <A=20
title=3Dbschirano@yahoo.com href=3D"mailto:bschirano@yahoo.com";>Brian =
Schirano</A> ;=20
<A title=3Dtrmarty@hotmail.com =
href=3D"mailto:trmarty@hotmail.com";>'marty'</A> ; <A=20
title=3Dfot@autox.team.net href=3D"mailto:fot@autox.team.net";>FOT =
List</A> </DIV>
<DIV><B>Subject:</B> RE: [Fot] Oil Pressure Conundrum</DIV></DIV></DIV>
<DIV> </DIV></DIV>
<DIV=20
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
"Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; =
DISPLAY: inline'>
<DIV class=3DWordSection1>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Calibri",sans-serif; COLOR: =
#1f497d'><<=20
</SPAN><SPAN style=3D'FONT-FAMILY: "Arial",sans-serif; COLOR: =
black'>careful=20
removal of all of the scratches and worn areas of the bottom plate on =
the pump=20
where the rotors set</SPAN><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Calibri",sans-serif; COLOR: =
#1f497d'>=20
>><o:p></o:p></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Calibri",sans-serif; COLOR: =
#1f497d'><o:p></o:p></SPAN> </P>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Calibri",sans-serif; COLOR: =
#1f497d'>And=20
when you do that, be sure to check on the proper end clearance of the =
rotors to=20
the end plate. There=E2=80=99s a spec on that in the =
manual.<o:p></o:p></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Calibri",sans-serif; COLOR: =
#1f497d'><o:p></o:p></SPAN> </P>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Calibri",sans-serif; COLOR: =
#1f497d'>Scott=20
(B.)<o:p></o:p></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Calibri",sans-serif; COLOR: =
#1f497d'><o:p></o:p></SPAN> </P>
<DIV>
<DIV=20
style=3D"BORDER-TOP: #e1e1e1 1pt solid; BORDER-RIGHT: medium none; =
BORDER-BOTTOM: medium none; PADDING-BOTTOM: 0in; PADDING-TOP: 3pt; =
PADDING-LEFT: 0in; BORDER-LEFT: medium none; PADDING-RIGHT: 0in">
<P class=3DMsoNormal><B><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: =
"Calibri",sans-serif'>From:</SPAN></B><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Calibri",sans-serif'> Fot=20
[mailto:fot-bounces@autox.team.net] <B>On Behalf Of </B>Jerry Van=20
Vlack<BR><B>Sent:</B> Thursday, July 14, 2016 4:56 AM<BR><B>To:</B> =
Brian=20
Schirano <bschirano@yahoo.com>; 'marty' =
<trmarty@hotmail.com>; FOT=20
List <fot@autox.team.net><BR><B>Subject:</B> Re: [Fot] Oil =
Pressure=20
Conundrum<o:p></o:p></SPAN></P></DIV></DIV>
<P class=3DMsoNormal><o:p></o:p> </P>
<DIV>
<DIV>
<DIV>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-FAMILY: "Arial",sans-serif; COLOR: black'>Marty, I =
experienced low=20
to no oil pressure at idle on my 4A street car several years ago, =
and what=20
fixed it for me was new rod bearings and mostly I think was a close =
inspection=20
of the oil pump and maintaining those clearances. So new rotor assembly =
and a=20
careful removal of all of the scratches and worn areas of the bottom =
plate on=20
the pump where the rotors set. Emery paper and a flat piece of glass and =
a lot=20
of hand work getting it flat. I am assuming the oil pump is similar to a =
4a pump=20
in it=E2=80=99s construction. Many highway miles later hot idle is 30 or =
above and at=20
3000 rpm it=E2=80=99s been a steady 65 to 70 pounds. Maybe look there if =
you haven't=20
already done so.<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-FAMILY: "Arial",sans-serif; COLOR: =
black'> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-FAMILY: "Arial",sans-serif; COLOR: =
black'>JVV<o:p></o:p></SPAN></P></DIV>
<DIV>
<DIV>
<DIV>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 10pt; FONT-FAMILY: "Tahoma",sans-serif; COLOR: =
black'> <o:p></o:p></SPAN></P></DIV>
<DIV>
<DIV>
<P class=3DMsoNormal style=3D"BACKGROUND: whitesmoke"><B><SPAN=20
style=3D'FONT-SIZE: 10pt; FONT-FAMILY: "Tahoma",sans-serif; COLOR: =
black'>From:</SPAN></B><SPAN=20
style=3D'FONT-SIZE: 10pt; FONT-FAMILY: "Tahoma",sans-serif; COLOR: =
black'> <A=20
title=3Dbschirano@yahoo.com href=3D"mailto:bschirano@yahoo.com";>Brian =
Schirano</A>=20
<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=3DMsoNormal style=3D"BACKGROUND: whitesmoke"><B><SPAN=20
style=3D'FONT-SIZE: 10pt; FONT-FAMILY: "Tahoma",sans-serif; COLOR: =
black'>Sent:</SPAN></B><SPAN=20
style=3D'FONT-SIZE: 10pt; FONT-FAMILY: "Tahoma",sans-serif; COLOR: =
black'>=20
Wednesday, July 13, 2016 8:12 AM<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=3DMsoNormal style=3D"BACKGROUND: whitesmoke"><B><SPAN=20
style=3D'FONT-SIZE: 10pt; FONT-FAMILY: "Tahoma",sans-serif; COLOR: =
black'>To:</SPAN></B><SPAN=20
style=3D'FONT-SIZE: 10pt; FONT-FAMILY: "Tahoma",sans-serif; COLOR: =
black'> <A=20
title=3Dtrmarty@hotmail.com =
href=3D"mailto:trmarty@hotmail.com";>'marty'</A> ; <A=20
title=3Dfot@autox.team.net href=3D"mailto:fot@autox.team.net";>FOT =
List</A>=20
<o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=3DMsoNormal style=3D"BACKGROUND: whitesmoke"><B><SPAN=20
style=3D'FONT-SIZE: 10pt; FONT-FAMILY: "Tahoma",sans-serif; COLOR: =
black'>Subject:</SPAN></B><SPAN=20
style=3D'FONT-SIZE: 10pt; FONT-FAMILY: "Tahoma",sans-serif; COLOR: =
black'> Re:=20
[Fot] Oil Pressure Conundrum<o:p></o:p></SPAN></P></DIV></DIV></DIV>
<DIV>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-FAMILY: "Calibri",sans-serif; COLOR: =
black'> <o:p></o:p></SPAN></P></DIV></DIV>
<DIV>
<DIV>
<DIV id=3Dyui_3_16_0_1_1468327401121_163568>
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN style=3D"COLOR: =
black">Marty, I=20
think Peter is right. The GT motor I am about to rebuild had similar =
symptoms.=20
Great pressure cold, 75-80, then dropping to 20-25 hot at idle, =
sometimes less=20
and I had to keep RPMs up to ensure lubrication. Uppon teardown, I had a =
a=20
couple of big end rod bearings showing some copper, and others =
indicating wear=20
also, all on the compression stroke side (opposite side of oil journal). =
Mains=20
were all OK. I run street Mobil One 15-50, but think I will change after =
rebuild.<o:p></o:p></SPAN></P></DIV>
<DIV id=3Dyui_3_16_0_1_1468327401121_163838>
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D"COLOR: black"><BR><BR><o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN style=3D"COLOR: =
black">Would=20
welcome a few race oil opinions from FOT<o:p></o:p></SPAN></P></DIV>
<DIV id=3Dyui_3_16_0_1_1468327401121_163248>
<DIV id=3Dyui_3_16_0_1_1468327401121_163249>
<DIV id=3Dyui_3_16_0_1_1468327401121_163374>
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D"COLOR: black"> <o:p></o:p></SPAN></P></DIV>
<DIV id=3Dyui_3_16_0_1_1468327401121_163739>
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D"COLOR: black">Best<o:p></o:p></SPAN></P></DIV>
<DIV id=3Dyui_3_16_0_1_1468327401121_163760>
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D"COLOR: black">Brian<o:p></o:p></SPAN></P></DIV>
<DIV id=3Dyui_3_16_0_1_1468327401121_163376>
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D"COLOR: black"> <o:p></o:p></SPAN></P></DIV>
<DIV id=3Dyui_3_16_0_1_1468327401121_163378>
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN style=3D"COLOR: =
black">26A=20
GT6+, 28 TR6<o:p></o:p></SPAN></P></DIV></DIV>
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN style=3D"COLOR: =
black">Brian=20
Schirano<BR>585-305-0349 Cell <BR><A=20
href=3D"mailto:BSchirano@yahoo.com";>BSchirano@yahoo.com</A><o:p></o:p></S=
PAN></P></DIV>
<DIV id=3Dyui_3_16_0_1_1468327401121_163346>
<P class=3DMsoNormal style=3D"MARGIN-BOTTOM: 12pt; BACKGROUND: =
white"><SPAN=20
style=3D"COLOR: black"><o:p></o:p></SPAN> </P></DIV>
<DIV id=3Dyui_3_16_0_1_1468327401121_163352>
<DIV id=3Dyui_3_16_0_1_1468327401121_163351>
<DIV id=3Dyui_3_16_0_1_1468327401121_163350>
<DIV id=3Dyui_3_16_0_1_1468327401121_163349>
<DIV class=3DMsoNormal style=3D"BACKGROUND: white; TEXT-ALIGN: center"=20
align=3Dcenter><SPAN=20
style=3D'FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: =
black'>
<HR align=3Dcenter SIZE=3D1 width=3D"100%">
</SPAN></DIV>
<P class=3DMsoNormal style=3D"BACKGROUND: white"><B><SPAN=20
style=3D'FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: =
black'>From:</SPAN></B><SPAN=20
style=3D'FONT-SIZE: 10pt; FONT-FAMILY: "Arial",sans-serif; COLOR: =
black'> Peter=20
Vucinic <<A=20
href=3D"mailto:pvucinic@netspace.net.au";>pvucinic@netspace.net.au</A>>=
<BR><B>To:</B>=20
'marty' <<A =
href=3D"mailto:trmarty@hotmail.com";>trmarty@hotmail.com</A>>;=20
'FOT' <<A =
href=3D"mailto:fot@autox.team.net";>fot@autox.team.net</A>>=20
<BR><B>Sent:</B> Tuesday, July 12, 2016 9:54 AM<BR><B>Subject:</B> Re: =
[Fot] Oil=20
Pressure Conundrum</SPAN><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'><o:p></o:p></SPAN></P></DIV>
<DIV>
<DIV>
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'> <o:p></o:p></SPAN></P></DIV>
<DIV id=3Dyiv0474239424>
<DIV>
<DIV>
<DIV>
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'>Marty,</SPAN><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'><o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'>Sounds=20
like some of the bearings clearances are larger than they should be and =
you are=20
losing oil pressure as the oil warms up and starts leaking through the=20
journal(s) faster once you are at operating temps. </SPAN><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'><o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'>If=20
you are running an aggressive cam profile and/or high valve spring =
rates? This=20
will adversely affect cam bearing wear for sure.</SPAN><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'><o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=3DMsoNormal style=3D"BACKGROUND: white"><B><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'>"You=20
can Make a Small Fortune From Motor Racing. As long as You Started With =
A Lage=20
Fortune!"</SPAN></B><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'><o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'>Kind=20
Regards</SPAN><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'><o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'>Peter=20
Vucinic</SPAN><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'><o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'>TR4 -=20
TR7 V8 - Spitfire MkII</SPAN><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'><o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'>_______________________________________________</SPAN><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'><o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D"FONT-SIZE: 10.5pt; FONT-FAMILY: consolas; COLOR: #1f497d"><A=20
href=3D"mailto:fot@autox.team.net"=20
target=3D_blank>fot@autox.team.net</A></SPAN><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'><o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D"FONT-SIZE: 10.5pt; FONT-FAMILY: consolas; COLOR: #1f497d"><A=20
href=3D"http://www.fot-racing.com/"=20
target=3D_blank>http://www.fot-racing.com</A></SPAN><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'><o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D"FONT-SIZE: 10.5pt; FONT-FAMILY: consolas; COLOR: =
#1f497d">Donate: <A=20
href=3D"http://www.team.net/donate.html"=20
target=3D_blank>http://www.team.net/donate.html</A></SPAN><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'><o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D"FONT-SIZE: 10.5pt; FONT-FAMILY: consolas; COLOR: =
#1f497d">Archive: <A=20
href=3D"http://www.team.net/archive"=20
target=3D_blank>http://www.team.net/archive</A></SPAN><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'><o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D"FONT-SIZE: 10.5pt; FONT-FAMILY: consolas; COLOR: =
#1f497d">Forums: <A=20
href=3D"http://www.team.net/forums"=20
target=3D_blank>http://www.team.net/forums</A></SPAN><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'><o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'> <o:p></o:p></SPAN></P></DIV>
<DIV id=3Dyiv0474239424yqt20896>
<DIV>
<DIV=20
style=3D"BORDER-TOP: #b5c4df 1pt solid; BORDER-RIGHT: medium none; =
BORDER-BOTTOM: medium none; PADDING-BOTTOM: 0in; PADDING-TOP: 3pt; =
PADDING-LEFT: 0in; BORDER-LEFT: medium none; PADDING-RIGHT: 0in">
<DIV style=3D"MARGIN-LEFT: 0.5in">
<P class=3DMsoNormal style=3D"BACKGROUND: white"><B><SPAN=20
style=3D'FONT-SIZE: 10pt; FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'>From:</SPAN></B><SPAN=20
style=3D'FONT-SIZE: 10pt; FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'> Fot=20
[<A=20
href=3D"mailto:fot-bounces@autox.team.net";>mailto:fot-bounces@autox.team.=
net</A>]=20
<B>On Behalf Of </B>marty<BR><B>Sent:</B> Tuesday, 12 July 2016 4:09=20
AM<BR><B>To:</B> FOT<BR><B>Subject:</B> [Fot] Oil Pressure =
Conundrum</SPAN><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'><o:p></o:p></SPAN></P></DIV></DIV></DIV>
<DIV style=3D"MARGIN-LEFT: 0.5in">
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'> <o:p></o:p></SPAN></P></DIV>
<DIV>
<DIV style=3D"MARGIN-LEFT: 0.5in">
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: black'> =20
<o:p></o:p></SPAN></P></DIV>
<DIV style=3D"MARGIN-BOTTOM: 8pt; MARGIN-LEFT: 0.5in">
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: black'>I could use =
some=20
opinions. Some history. Spitfire small journal 1296 engine, rebuilt 6 =
race=20
weekends ago included all new bearings. I tore it down this spring to =
check it=20
over prior to last weekend PVGP event. Cam and crank end floats were to =
spec.=20
Rod and main bearings checked between .002 and .003 clearance. I do not =
have the=20
actual numbers in front of me at the present. Cam bearings appeared to =
have some=20
slight visual wear at the bottoms but I did not actually measure them. I =
run=20
Brad Pen 20W50. Oil temps run 210 and water temps run 190. EGT are =
1200/1250=20
range on track. I was fighting low oil pressure at running temps all =
weekend.=20
Once my oil temps come up on track the pressure drops down to 35psi. If =
I add=20
enough springs to the pressure relief valve I see over 125 psi cold so I =
am=20
thinking my pump is putting out enough pressure. I tried shimming to get =
50/60=20
cold at idle and it drops to 35 at operating temps at 7000 rpm. I tried =
a new=20
pressure gage over the weekend and the numbers did not change. I am =
currently=20
running an auxiliary oil line to the head, I removed it at one point =
over the=20
weekend and it had no effect. I tried a new pressure relief valve assy =
and it=20
had no effect. I believe this situation actually started a season =
ago=20
because I added a washer to the pressure relief valve last season. =
I=E2=80=99m=20
thinking it most likely is cam bearing wear even though all the bearings =
were=20
fresh 6 events ago. Any guidance? One thing I did learn this weekend is =
my=20
accusump pressure gage is incorrect. It was reading about 30 psi =
higher=20
that my dash gage. I was thinking it was probably correct and my dash =
gage was=20
wrong until I replaced my electric dash gage with a mechanical gage and =
its=20
reading matched the gage I just disconnected. Oil pressure readings are =
taken at=20
the port below the distributer. <o:p></o:p></SPAN></P></DIV>
<DIV style=3D"MARGIN-BOTTOM: 8pt; MARGIN-LEFT: 0.5in">
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'> <o:p></o:p></SPAN></P></DIV>
<DIV style=3D"MARGIN-BOTTOM: 8pt; MARGIN-LEFT: 0.5in">
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: black'>Side note. =
Car ran=20
awesome. I ran a 2.22 at PittRace Sunday and that was 6 seconds faster =
than my=20
previous best lap there. <o:p></o:p></SPAN></P></DIV>
<DIV style=3D"MARGIN-BOTTOM: 8pt; MARGIN-LEFT: 0.5in">
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'> <o:p></o:p></SPAN></P></DIV>
<DIV style=3D"MARGIN-BOTTOM: 8pt; MARGIN-LEFT: 0.5in">
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'>Thanks,<o:p></o:p></SPAN></P></DIV>
<DIV style=3D"MARGIN-BOTTOM: 8pt; MARGIN-LEFT: 0.5in">
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: black'>Marty=20
<o:p></o:p></SPAN></P></DIV></DIV></DIV></DIV></DIV></DIV>
<DIV>
<P class=3DMsoNormal style=3D"BACKGROUND: white"><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'> <o:p></o:p></SPAN></P></DIV>
<DIV id=3Dyqt08447>
<P class=3DMsoNormal style=3D"MARGIN-BOTTOM: 12pt; BACKGROUND: =
white"><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'>_______________________________________________<BR><A=20
href=3D"mailto:fot@autox.team.net";>fot@autox.team.net</A><BR><BR><A=20
href=3D"http://www.fot-racing.com/"=20
target=3D_blank>http://www.fot-racing.com</A><BR><BR>Donate: <A=20
href=3D"http://www.team.net/donate.html"=20
target=3D_blank>http://www.team.net/donate.html</A><BR>Archive: <A=20
href=3D"http://www.team.net/archive"=20
target=3D_blank>http://www.team.net/archive</A><BR>Forums: <A=20
href=3D"http://www.team.net/forums"=20
target=3D_blank>http://www.team.net/forums</A><BR>Unsubscribe/Manage: <A =
href=3D"http://autox.team.net/mailman/options/fot/bschirano@yahoo.com"=20
target=3D_blank>http://autox.team.net/mailman/options/fot/bschirano@yahoo=
.com</A><BR><BR><o:p></o:p></SPAN></P></DIV>
<P class=3DMsoNormal style=3D"MARGIN-BOTTOM: 12pt; BACKGROUND: =
white"><SPAN=20
style=3D'FONT-FAMILY: "Helvetica",sans-serif; COLOR: =
black'><o:p></o:p></SPAN> </P></DIV></DIV></DIV></DIV></DIV>
<DIV class=3DMsoNormal style=3D"TEXT-ALIGN: center" align=3Dcenter><SPAN =
style=3D'FONT-FAMILY: "Calibri",sans-serif; COLOR: black'>
<HR align=3Dcenter SIZE=3D2 width=3D"100%">
</SPAN></DIV>
<P class=3DMsoNormal style=3D"MARGIN-BOTTOM: 12pt"><SPAN=20
style=3D'FONT-FAMILY: "Calibri",sans-serif; COLOR: =
black'>_______________________________________________<BR><A=20
href=3D"mailto:fot@autox.team.net";>fot@autox.team.net</A><BR><BR><A=20
href=3D"http://www.fot-racing.com";>http://www.fot-racing.com</A><BR><BR>D=
onate: <A=20
href=3D"http://www.team.net/donate.html";>http://www.team.net/donate.html<=
/A><BR>Archive:=20
<A =
href=3D"http://www.team.net/archive";>http://www.team.net/archive</A><BR>F=
orums:=20
<A=20
href=3D"http://www.team.net/forums";>http://www.team.net/forums</A><BR>Uns=
ubscribe/Manage:=20
<A=20
href=3D"http://autox.team.net/mailman/options/fot/jerryvv@roadrunner.com"=
>http://autox.team.net/mailman/options/fot/jerryvv@roadrunner.com</A><BR>=
<BR><o:p></o:p></SPAN></P></DIV></DIV></DIV></DIV></DIV></DIV></DIV></BOD=
Y></HTML>
------=_NextPart_000_00DD_01D1DE0D.CDCF48B0--
--===============5735132933186904103==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://www.team.net/archive
--===============5735132933186904103==--
|