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HS2s</div>
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.030 1275 kent 266, 1.5 rockers, 9.75:1, LCB, 60-70 psi oil pressure hot at speed,
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no vent at Timing cover due to Belt Drive<br>
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<div>Brian S.<br>
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<div>Bugeyeracer resto'ed Thanks to Frank C.!<br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Rick Fisk <refisk@chartermi.net><br>
<b>Sent:</b> Friday, June 3, 2022 2:47 PM<br>
<b>To:</b> brian S <bugeye15@hotmail.com><br>
<b>Cc:</b> spridgets list <spridgets@autox.team.net><br>
<b>Subject:</b> Re: [Spridgets] Excessive Crankcase pressure</font>
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<div dir="ltr">Brian,</div>
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<div dir="ltr">My tiny little brain can't remember, but what carb(s) are you running?</div>
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<div dir="ltr">Rick</div>
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<blockquote type="cite">On Jun 3, 2022, at 2:06 PM, brian S via Spridgets <spridgets@autox.team.net> wrote:<br>
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On an unrelated note, to my broken valve spring retainer, I think.</div>
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This 1275 has had Excessive Crankcase pressure for a while and seems to be getting worse.</div>
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It has a breather off the old fuel pump boss going to a catch can.</div>
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Valve cover has a breather to atmosphere and vented cap.</div>
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Highway driving, 65 mph, which is about 4200 in my car, will fill the 1 pint catch can in about 50 miles!</div>
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It will also try to push the Dip Stick out<br>
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Driving around town/back roads, varied rpm, it's not too bad. <br>
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It will take a while to fill the catch can.</div>
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Compression is 172-180 in all 4 cylinders. So I thought must be rings.</div>
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Did a Leakdown test.<br>
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TDC, throttle open, Valve cover off, Rad cap off, dip stick out, gauge set to 100psi.<br>
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Has 0 leakdown in all 4. 0! <br>
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WTH?</div>
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Car runs great, very good power, tho it does smoke out the tail pipe some.</div>
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Could it be bore taper? i.e. Seal at top is good but excessive space at the bottom ½ or so of bore??</div>
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Can that be checked w/o pulling the head?</div>
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Thanks in advance for any insight.<br>
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<div>Brian S.<br>
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<div>Bugeyeracer resto'ed Thanks to Frank C.!<br>
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