[Spridgets] Excessive Crankcase pressure

[Rick Fisk]

Do your HS2's have the brass port for venting the crankcase?

> On Jun 3, 2022, at 5:11 PM, brian S <bugeye15 at hotmail.com> wrote:
> 
> 
> HS2s
> .030 1275 kent 266, 1.5 rockers, 9.75:1, LCB, 60-70 psi oil pressure hot at speed, 
> no vent at Timing cover due to Belt Drive
> 
> Brian S.
> Bugeyeracer resto'ed Thanks to Frank C.!
> From: Rick Fisk <refisk at chartermi.net>
> Sent: Friday, June 3, 2022 2:47 PM
> To: brian S <bugeye15 at hotmail.com>
> Cc: spridgets list <spridgets at autox.team.net>
> Subject: Re: [Spridgets] Excessive Crankcase pressure
>  
> 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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>> 
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