Rettedm Posted December 27, 2014 Share Posted December 27, 2014 Looking for advice sealing up oil leaks from oil pan and valve cover with engine in car still. Any advice or success stories are greatly appreciated! Dave Link to comment Share on other sites More sharing options...
bball7754 Posted December 27, 2014 Share Posted December 27, 2014 Advice I've read and followed for the valve cover is to not over tighten the cover. If you do, it just creates gaps in the gasket. If you have a stamped steel cover, there are load spreading washers that are supposed to help. If you have a cast aluminum cover, you're not supposed to use one type of gasket, but confess I can't remember if it's the cork gasket or not. No advice on the oil pan. Mine leaked until I had my engine rebuilt - now it doesn't. But don't know what the engine builder used. Steve Link to comment Share on other sites More sharing options...
locost7018 Posted December 27, 2014 Share Posted December 27, 2014 If it is a Xflow and not leaking oil then you are out of oil!!!!! Russ Link to comment Share on other sites More sharing options...
TheDingo8MyBaby Posted December 28, 2014 Share Posted December 28, 2014 Here are my findings: Valve cover: I like rubber gaskets if you can get them. I generally use permatex "the right stuff" and apply only to the worst surface. This allows you to crack it open when needed for valve adjustments. Do not over tighten, but this is less critical with cast covers. Oil pan- paper or cork will work, but I really like the rubber half moon seals for the front and rear covers. Again recommend "the right stuff" by permatex. I've also used studs at the four corners of the pan which helps keep the gasket in place while tightening. Again- loctite and do not over-tighten. My pre-crossflow doesn't leak any oil, actually. Link to comment Share on other sites More sharing options...
coffee break Posted December 28, 2014 Share Posted December 28, 2014 My crossflow has leaked oil from the pan gasket. I have replaced the gasket since the engine came out due to tranny work. I used Permatex #2, old school stuff. No results yet, it's still on the engine stand. My tranny mechanic told me it wasn't leaking, it was marking it's territory.:blush: Link to comment Share on other sites More sharing options...
Rettedm Posted December 28, 2014 Author Share Posted December 28, 2014 Thanks, I have a alloy valve cover and managed to seal it with a FelPro gasket except for the very front behind the thermostat housing. My main concern is the flood coming from the front of the oil pan. Is there any problem changing the rubber half round seals with the engine/tranny in the car? Link to comment Share on other sites More sharing options...
TheDingo8MyBaby Posted December 28, 2014 Share Posted December 28, 2014 It's possible, but more difficult work since you're working upside down. Link to comment Share on other sites More sharing options...
coffee break Posted December 28, 2014 Share Posted December 28, 2014 I thought about attempting to replace the pan gasket, but there are at least 2 bolts behind the bellhousing shield that could not be accessed without separating the engine form the tranny. I am pondering on how to modify the shield to remove the lower portion with everything still together. The gap in the shield is how I found it, I'm not sure what the purpose is. Link to comment Share on other sites More sharing options...
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