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too much pressure...

To: british-cars@hoosier
Subject: too much pressure...
From: FullSail.... 20-Jul-1992 1016 <metzger@decwet.ENET.dec.com>
Date: Mon, 20 Jul 92 10:15:25 PDT
To keep people updated on my saga...

1275 1970 Midget....

Car runs like crap with SU's..rebuild SU's many times...car still runs like 
crap...decide to put weber on car...car runs great cept now we have an oil 
leak...pull engine...replace rear end cover gasket...also replace clutch while 
engine is out...put engine back in ....1 man job all the way...start up 
car..oil 
still leaks....

It looks like the oil is leaking out wherever it can via the crankcase. For 
example it's slipping past the joint between the crank and the crankcase, it's 
also getting pushed past the threads of the bolt that you remove to drain the 
oil. It looks to me like I'm getting some severe positive pressure in my 
crankcase that is pushing the oil out. 

What would cause this? The only thing I can think of is that I'm getting blowby 
at the piston rings that is causing the positive pressure in the crankcase and 
therefore the oil leak.

Oil pressure is great at 70 lbs cold, 60 lbs under throttle and 40 lbs at idle 
warm....Could the weber be creating such a power jump that it is causing all 
this? I'm getting to the point now where I'm going to take it off the road and 
do a total rebuild this winter....I would like to drive it this summer but I'm 
too environmentaly conscious to blow oil all over the road for 3 months...

Any help would be appreciated...

John Metzger
metzger@decwet.dec.com 


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