[FC] Oil Pan Leak Woes

Scott & Cyndi Wilson scwilson8126 at wowway.com
Wed Jun 25 20:41:34 EDT 2008


Hey everybody;

I'm chasing elusive oil leak(s) on my Corvair and am becoming very frustrated at not being able to stop them.
Specifically, I'm trying to stop an oil  pan leak (front) and possibly a front bellhousing seal leak.  
I can't seem to stop the oil-pan from leaking near the front of the engine.   I leaks bad enough that I don't have enough time to get out of the car and place a piece of cardboard under the engine before it stains the cement.  

Here's what I have done up to this point:
  a.. Stock oil pan gasket: Installed new cork/rubber pan gasket (2X) including flattening bolt holes.  Used non-hardening permatex both times.  Tourqued bolts to specs.  Did not stop leaking at front of oil pan (around front 3 and second row of 4 bolts).  Second time I tightened bolts to just tight, let dry overnight and tightened to torque specs.  Same leaks.   
  b.. Purchased vendor aluminum oil pan (very nice piece of cast aluminum) and thin paper gasket.  Used permatex and torqued to 7-8 ft. lbs. per vendor.  Still leaks in the same spot.  Then purchased and used a thinner cork/rubber for aluminum pans and have the same area leaking.  The main part of the oil pan does not leak.  
I may also have a bellhousing seal leak, but I can see the oil leaking from the front of the gasket and it looks like it could also be leaking from the bolts themselves (I did have to helicoil some of the bolt holes).  I have previously replaced pushrod tube and oil-cooler seals.  In both cases, I have continued to tighten the front bolts, but this does not stop the leaking.    I know  most Corvairs leak some oil, but my car is leaking worse than it ever has.  

I am planning on changing the top cover gasket but want to eliminate all possibilities before changing the bellhousing gasket.

Am I doing anything wrong or missing anything?

Any suggestions will be greatly appreciated.

Thanks,

Scott Wilson

'63 Rampside
'63 Monza Convertible




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