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Doing the leakdown at TDC takes taper into account. The wear will be at the t=
op. We recently had an engine loose an exhaust guide completely on the grid=E2=
=80=A6like, gone. We blew the cap off the valve cover the irradiate was so g=
reat. You may have bent a valve a bit when the spring broke and you=E2=80=99=
re only seeing the effect whole running. I don=E2=80=99t know!=20
Ron Soave
> On Jun 3, 2022, at 1:45 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
> Archive: http://www.team.net/pipermail/spridgets http://autox.team.net/ar=
chive
>=20
> Unsubscribe/Manage: http://autox.team.net/mailman/options/spridgets/soaver=
o@yahoo.com
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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">Doing the leakdown at TDC takes taper into a=
ccount. The wear will be at the top. We recently had an engine loose an exha=
ust guide completely on the grid=E2=80=A6like, gone. We blew the cap off the=
valve cover the irradiate was so great. You may have bent a valve a bit whe=
n the spring broke and you=E2=80=99re only seeing the effect whole running. I=
don=E2=80=99t know! <br><br><div dir=3D"ltr">Ron Soave</div><div dir=3D=
"ltr"><br><blockquote type=3D"cite">On Jun 3, 2022, at 1:45 PM, brian S via S=
pridgets <spridgets@autox.team.net> 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 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>
<span>------------------------</span><br><span></span><br><span>spridgets@au=
tox.team.net</span><br><span></span><br><span>Donate: http://www.team.net/do=
nate.html</span><br><span>Suggested annual donation: $12.75</span><br><span>=
</span><br><span>Archive: http://www.team.net/pipermail/spridgets http=
://autox.team.net/archive</span><br><span></span><br><span>Unsubscribe/Manag=
e: http://autox.team.net/mailman/options/spridgets/soavero@yahoo.com</span><=
br></div></blockquote></body></html>=
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