[Spridgets] Excessive Crankcase pressure

[Rick Fisk]

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 at autox.team.net> wrote:
> 
> 
> On an unrelated note, to my broken valve spring retainer, I think.
> 
> 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 pint 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. 
> 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! 
> 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 the bottom ½ or so of bore??
> Can that be checked w/o pulling the head?
> 
> Thanks in advance for any insight.
> 
> Brian S.
> Bugeyeracer resto'ed Thanks to Frank C.!
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