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Re: [Spridgets] Excessive Crankcase pressure

To: brian S <bugeye15@hotmail.com> WudG8Ho1Ofx4+PcuR9l/bMmwoUJamzJun9iWAjfTPJ5MRKGaLpvDrO1tb6fT20+94e9MO7b67awlm6IHP+TaoxjGt08ifIxJXip7kiFwYFqAhiUV+OKM89Sw
Subject: Re: [Spridgets] Excessive Crankcase pressure
From: Rick Fisk via Spridgets <spridgets@autox.team.net>
Date: Fri, 3 Jun 2022 14:47:35 -0400
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Brian,

My tiny little brain can't remember, but what carb(s) are you running?

Rick

> On Jun 3, 2022, at 2:06 PM, brian S via Spridgets <spridgets@autox.team.ne=
t> wrote:
>=20
> =EF=BB=BF
> On an unrelated note, to my broken valve spring retainer, I think.
>=20
> This 1275 has had Excessive Crankcase pressure for a while and seems to be=
 getting worse.
> It has a breather off the old fuel pump boss going to a catch can.
> Valve cover has a breather to atmosphere and vented cap.
> Highway driving, 65 mph, which is about 4200 in my car, will fill the 1 pi=
nt catch can in about 50 miles!
> It will also try to push the Dip Stick out
> Driving around town/back roads, varied rpm, it's not too bad.=20
> It will take a while to fill the catch can.
> Compression is 172-180 in all 4 cylinders. So I thought must be rings.
> Did a Leakdown test.
> TDC, throttle open, Valve cover off, Rad cap off, dip stick out, gauge set=
 to 100psi.
> Has 0 leakdown in all 4. 0!=20
> WTH?
> Car runs great, very good power, tho it does smoke out the tail pipe some.=

> Could it be bore taper? i.e. Seal at top is good but excessive space at th=
e bottom =C2=BD or so of bore??
> Can that be checked w/o pulling the head?
>=20
> Thanks in advance for any insight.
>=20
> Brian S.
> Bugeyeracer resto'ed Thanks to Frank C.!
> ------------------------
>=20
> spridgets@autox.team.net
>=20
> Donate: http://www.team.net/donate.html
> Suggested annual donation: $12.75
>=20
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>=20
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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto"><div dir=3D"ltr"></div><div dir=3D"ltr">Bri=
an,</div><div dir=3D"ltr"><br></div><div dir=3D"ltr">My tiny little brain ca=
n't remember, but what carb(s) are you running?</div><div dir=3D"ltr"><br></=
div><div dir=3D"ltr">Rick</div><div dir=3D"ltr"><br><blockquote type=3D"cite=
">On Jun 3, 2022, at 2:06 PM, brian S via Spridgets &lt;spridgets@autox.team=
.net&gt; wrote:<br><br></blockquote></div><blockquote type=3D"cite"><div dir=
=3D"ltr">=EF=BB=BF

<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Diso-8859-1=
">



<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; c=
olor: rgb(0, 0, 0);" class=3D"elementToProof">
On an unrelated&nbsp;note, to my broken valve spring retainer, I think.</div=
>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; c=
olor: rgb(0, 0, 0);" class=3D"elementToProof">
<br>
</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; c=
olor: rgb(0, 0, 0);" class=3D"elementToProof">
This 1275 has had Excessive Crankcase pressure for a while and seems to be g=
etting worse.</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; c=
olor: rgb(0, 0, 0);" class=3D"elementToProof">
It has a breather off the old fuel pump boss going to a catch can.</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; c=
olor: rgb(0, 0, 0);" class=3D"elementToProof">
Valve cover has a breather to atmosphere and vented cap.</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; c=
olor: rgb(0, 0, 0);" class=3D"elementToProof">
Highway driving, 65 mph, which is about 4200 in my car, will fill the 1 pint=
 catch can in about 50 miles!</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; c=
olor: rgb(0, 0, 0);" class=3D"elementToProof">
It will also try to push the Dip Stick out<br>
</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; c=
olor: rgb(0, 0, 0);" class=3D"elementToProof">
Driving around town/back roads, varied rpm, it's not too bad. <br>
</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; c=
olor: rgb(0, 0, 0);" class=3D"elementToProof">
It will take a while to fill the catch can.</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; c=
olor: rgb(0, 0, 0);" class=3D"elementToProof">
Compression is 172-180 in all 4 cylinders. So I thought must be rings.</div>=

<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; c=
olor: rgb(0, 0, 0);" class=3D"elementToProof">
Did a Leakdown test.<br>
</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; c=
olor: rgb(0, 0, 0);" class=3D"elementToProof">
</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; c=
olor: rgb(0, 0, 0);" class=3D"elementToProof">
TDC, throttle open, Valve cover off, Rad cap off, dip stick out, gauge set t=
o 100psi.<br>
</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; c=
olor: rgb(0, 0, 0);" class=3D"elementToProof">
Has 0 leakdown in all 4. 0! <br>
</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; c=
olor: rgb(0, 0, 0);" class=3D"elementToProof">
WTH?</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; c=
olor: rgb(0, 0, 0);" class=3D"elementToProof">
Car runs great, very good power, tho it does smoke out the tail pipe some.</=
div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; c=
olor: rgb(0, 0, 0);" class=3D"elementToProof">
Could it be bore taper? i.e. Seal at top is good but excessive space at the b=
ottom =C2=BD or so of bore??</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; c=
olor: rgb(0, 0, 0);" class=3D"elementToProof">
Can that be checked w/o pulling the head?</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; c=
olor: rgb(0, 0, 0);" class=3D"elementToProof">
<br>
</div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; c=
olor: rgb(0, 0, 0);" class=3D"elementToProof">
Thanks in advance for any insight.<br>
</div>
<div>
<div style=3D"font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; c=
olor: rgb(0, 0, 0);">
<br>
</div>
<div id=3D"Signature">
<div>
<div>Brian S.<br>
</div>
<div>Bugeyeracer resto'ed Thanks to Frank C.!<br>
</div>
</div>
</div>
</div>


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