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Crane Cams recommends the following method
of valve adjustment. check their website
Set the intake valve as the exhaust valve for that cylinder starts to =
open
Set the exhaust when the intake valve is almost fully closed.
I have used this for years and tested it by observing cam/valve =
locations
when doing double overhead cam motors. it works
art d
From: Richard Ewald via Mgs=20
Sent: Tuesday, May 19, 2015 9:00 AM
To: Clayton Kirkwood=20
Cc: MG List=20
Subject: Re: [Mgs] tappet question
Why would they be? The lobes for #1 and #4 should be 180 degrees apart =
as should the lobes for #2 and #3.=20
If they weren't you would have a very odd sounding and rough idle.
If you have ever listened to a air cooled VW motor, the source of their =
funny sounding idle is they fire one cylinder (#3) a bit retarded so it =
runs just a bit cooler as the oil cooler is right on top of the #3 =
cylinder.
But like I said, feel free to pull your valve cover and verify what I =
said. This is the internet, for all you know, I am an 16 year old red =
head stringing you along.
Rick
On Mon, May 18, 2015 at 9:00 PM, Clayton Kirkwood via Mgs =
<mgs@autox.team.net> wrote:
Thanks but it was the best word that came to mind at the time. I think =
you understand what I was after. So, several degrees either side =
won=E2=80=99t matter is what you=E2=80=99re saying. I was fairly certain =
that was true, however, aren=E2=80=99t the lobes of intake on 1 and out =
on 8 slightly shifted on the cam?=20
TIA,
Clayton
From: Richard Ewald [mailto:richard.ewald@gmail.com]=20
Sent: Monday, May 18, 2015 8:37 PM
To: crk@godblessthe.us
Cc: <mgacars@yahoogroups.com>; <mgs@autox.team.net>
Subject: Re: [Mgs] tappet question
Houston we have a problem with terminology here.=20
TDC and BDC refer to the position of the piston in the bore, or in the =
firing stroke. Period.=20
Piston at the exact top of its stroke? The piston is at TDC. At the =
exact bottom of its stroke? BDC.=20
#1 at the top of its stroke on compression? The engine is at TDC.=20
What you are referring to is the valve being on the lobe or the heel =
of the cam.=20
If you doubt that when #s valves 1 & 3 are on the top of the lobe that =
valves 6 & 8 are fully on the heel feel free to rotate the engine =
several degrees one way or the other and see if the gap gets bigger (it =
won't)=20
This is because a camshaft is a circle (base circle) with a bump on =
one side. Anywhere on the heel is going to give you the same clearance.=20
There are even some engines that instruct you to put the engine @ TDC =
#1 adjust half the valves then rotate the engine 360 degrees and then =
adjust the other half.=20
Rick
Sent from my iPhone
On May 18, 2015, at 10:03, Clayton Kirkwood via Mgs =
<mgs@autox.team.net> wrote:
Regarding Rule of Nine, I understand having 8 all the way up to set =
1. But there is a significant rotation between =E2=80=9Creal close to =
the top=E2=80=9D in front of, and after TDC. This can be seen with =
rotation the engine and seeing very little to no movement. Also, if I am =
not mistaken 8 TDC is not perfectly in line with BDC of 1; there is a =
bias. This means that when 8 is TDC, 1 is not absolutely BDC ready for =
measurement. So the question is, how do you ensure, with all of that =
slop, that you truly have BDC?
TIA,
Clayton
_______________________________________________
Mgs@autox.team.net
Donate: http://www.team.net/donate.html
Suggested annual donation $12.75
Archive: http://www.team.net/archive
Forums: http://www.team.net/forums
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No virus found in this message.
Checked by AVG - www.avg.com
Version: 2015.0.5941 / Virus Database: 4347/9817 - Release Date: =
05/19/15
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<HTML><HEAD></HEAD>
<BODY dir=3Dltr>
<DIV dir=3Dltr>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: #000000">
<DIV>Crane Cams recommends the following method</DIV>
<DIV>of valve adjustment. check their website</DIV>
<DIV> </DIV>
<DIV>Set the intake valve as the exhaust valve for that cylinder starts =
to=20
open</DIV>
<DIV>Set the exhaust when the intake valve is almost fully closed.</DIV>
<DIV> </DIV>
<DIV>I have used this for years and tested it by observing cam/valve=20
locations</DIV>
<DIV>when doing double overhead cam motors. it works</DIV>
<DIV> </DIV>
<DIV>art d</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=3Dmgs@autox.team.net=20
href=3D"mailto:mgs@autox.team.net";>Richard Ewald via Mgs</A> </DIV>
<DIV><B>Sent:</B> Tuesday, May 19, 2015 9:00 AM</DIV>
<DIV><B>To:</B> <A title=3Dcrk@godblessthe.us=20
href=3D"mailto:crk@godblessthe.us";>Clayton Kirkwood</A> </DIV>
<DIV><B>Cc:</B> <A title=3Dmgs@autox.team.net =
href=3D"mailto:mgs@autox.team.net";>MG=20
List</A> </DIV>
<DIV><B>Subject:</B> Re: [Mgs] tappet question</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 dir=3Dltr>Why would they be? The lobes for #1 and #4 should =
be 180=20
degrees apart as should the lobes for #2 and #3.=20
<DIV>If they weren't you would have a very odd sounding and rough =
idle.</DIV>
<DIV>If you have ever listened to a air cooled VW motor, the source of =
their=20
funny sounding idle is they fire one cylinder (#3) a bit retarded so it =
runs=20
just a bit cooler as the oil cooler is right on top of the #3 =
cylinder.</DIV>
<DIV>But like I said, feel free to pull your valve cover and verify what =
I=20
said. This is the internet, for all you know, I am an 16 year old =
red head=20
stringing you along.</DIV>
<DIV>Rick</DIV></DIV>
<DIV class=3Dgmail_extra>
<DIV> </DIV>
<DIV class=3Dgmail_quote>On Mon, May 18, 2015 at 9:00 PM, Clayton =
Kirkwood via Mgs=20
<SPAN dir=3Dltr><<A href=3D"mailto:mgs@autox.team.net"=20
target=3D_blank>mgs@autox.team.net</A>></SPAN> wrote:<BR>
<BLOCKQUOTE class=3Dgmail_quote=20
style=3D"PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc =
1px solid">
<DIV lang=3DEN-US vlink=3D"#954F72" link=3D"#0563C1">
<DIV>
<P class=3DMsoNormal><SPAN style=3D"COLOR: #1f497d">Thanks but it was =
the best=20
word that came to mind at the time. I think you understand what I was =
after.=20
So, several degrees either side won=E2=80=99t matter is what =
you=E2=80=99re saying. I was=20
fairly certain that was true, however, aren=E2=80=99t the lobes of =
intake on 1 and out=20
on 8 slightly shifted on the cam? <U></U><U></U></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D"COLOR: #1f497d"><U></U><U></U></SPAN> </P>
<P class=3DMsoNormal><SPAN style=3D"COLOR: =
#1f497d">TIA,<U></U><U></U></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D"COLOR: #1f497d"><U></U><U></U></SPAN> </P>
<P class=3DMsoNormal><SPAN=20
style=3D"COLOR: #1f497d">Clayton<U></U><U></U></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D"COLOR: #1f497d"><U></U><U></U></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>From:</B> Richard Ewald [mailto:<A=20
href=3D"mailto:richard.ewald@gmail.com"=20
target=3D_blank>richard.ewald@gmail.com</A>] <BR><B>Sent:</B> Monday, =
May 18,=20
2015 8:37 PM<BR><B>To:</B> <A href=3D"mailto:crk@godblessthe.us"=20
target=3D_blank>crk@godblessthe.us</A><BR><B>Cc:</B> <<A=20
href=3D"mailto:mgacars@yahoogroups.com"=20
target=3D_blank>mgacars@yahoogroups.com</A>>; <<A=20
href=3D"mailto:mgs@autox.team.net"=20
target=3D_blank>mgs@autox.team.net</A>><SPAN><BR><B>Subject:</B> =
Re: [Mgs]=20
tappet question<U></U><U></U></SPAN></P></DIV></DIV>
<P class=3DMsoNormal><U></U><U></U> </P>
<DIV>
<P class=3DMsoNormal>Houston we have a problem with terminology here. =
<SPAN=20
style=3D"FONT-SIZE: 12pt"><U></U><U></U></SPAN></P></DIV>
<DIV>
<DIV class=3Dh5>
<DIV>
<P class=3DMsoNormal>TDC and BDC refer to the position of the piston =
in the=20
bore, or in the firing stroke. Period. <U></U><U></U></P></DIV>
<DIV>
<P class=3DMsoNormal>Piston at the exact top of its stroke? The =
piston is=20
at TDC. At the exact bottom of its stroke? BDC. =
<U></U><U></U></P></DIV>
<DIV>
<P class=3DMsoNormal>#1 at the top of its stroke on compression? =
The=20
engine is at TDC. <U></U><U></U></P></DIV>
<DIV>
<P class=3DMsoNormal>What you are referring to is the valve being on =
the lobe or=20
the heel of the cam. <U></U><U></U></P></DIV>
<DIV>
<P class=3DMsoNormal>If you doubt that when #s valves 1 & 3 are on =
the top=20
of the lobe that valves 6 & 8 are fully on the heel feel free to =
rotate=20
the engine several degrees one way or the other and see if the gap =
gets bigger=20
(it won't) <U></U><U></U></P></DIV>
<DIV>
<P class=3DMsoNormal>This is because a camshaft is a circle (base =
circle) with a=20
bump on one side. Anywhere on the heel is going to give you the same=20
clearance. <U></U><U></U></P></DIV>
<DIV>
<P class=3DMsoNormal>There are even some engines that instruct you to =
put the=20
engine @ TDC #1 adjust half the valves then rotate the engine 360 =
degrees and=20
then adjust the other half. <U></U><U></U></P></DIV>
<DIV>
<P class=3DMsoNormal>Rick<U></U><U></U></P></DIV>
<DIV>
<P class=3DMsoNormal><BR><BR>Sent from my =
iPhone<U></U><U></U></P></DIV>
<DIV>
<P class=3DMsoNormal style=3D"MARGIN-BOTTOM: 12pt"><BR>On May 18, =
2015, at 10:03,=20
Clayton Kirkwood via Mgs <<A href=3D"mailto:mgs@autox.team.net"=20
target=3D_blank>mgs@autox.team.net</A>> =
wrote:<U></U><U></U></P></DIV>
<BLOCKQUOTE style=3D"MARGIN-BOTTOM: 5pt; MARGIN-TOP: 5pt">
<P class=3DMsoNormal><SPAN style=3D"COLOR: #1f497d">Regarding Rule =
of Nine, I=20
understand having 8 all the way up to set 1. But there is a =
significant=20
rotation between =E2=80=9Creal close to the top=E2=80=9D in front =
of, and after TDC. This=20
can be seen with rotation the engine and seeing very little to no =
movement.=20
Also, if I am not mistaken 8 TDC is not perfectly in line with BDC =
of 1;=20
there is a bias. This means that when 8 is TDC, 1 is not absolutely =
BDC=20
ready for measurement. So the question is, how do you ensure, with =
all of=20
that slop, that you truly have BDC?</SPAN><U></U><U></U></P>
<P class=3DMsoNormal><SPAN=20
style=3D"COLOR: #1f497d"></SPAN><U></U><U></U> </P>
<P class=3DMsoNormal><SPAN=20
style=3D"COLOR: #1f497d">TIA,</SPAN><U></U><U></U></P>
<P class=3DMsoNormal><SPAN=20
style=3D"COLOR: #1f497d"></SPAN><U></U><U></U> </P>
<P class=3DMsoNormal><SPAN=20
style=3D"COLOR: #1f497d">Clayton</SPAN><U></U><U></U></P>
<P class=3DMsoNormal><SPAN=20
style=3D"COLOR: #1f497d"></SPAN><U></U><U></U> </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=20
=
class=3DMsoNormal><U></U><U></U> </P></DIV></DIV></BLOCKQUOTE></DIV>=
</DIV></DIV></DIV><BR>_______________________________________________<BR>=
<BR><A=20
href=3D"mailto:Mgs@autox.team.net";>Mgs@autox.team.net</A><BR>Donate: =
<A=20
href=3D"http://www.team.net/donate.html"=20
target=3D_blank>http://www.team.net/donate.html</A><BR>Suggested =
annual=20
donation $12.75<BR>Archive: <A =
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target=3D_blank>http://autox.team.net/mailman/options/mgs/richard.ewald@g=
mail.com</A><BR><BR></BLOCKQUOTE></DIV>
<DIV> </DIV></DIV>
<P>
<HR>
_______________________________________________<BR><BR>Mgs@autox.team.net=
<BR>Donate:=20
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<P align=3Dleft color=3D"#000000" avgcert??>No virus found in this=20
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