Sealing oil pan issues?? - Performance Forum

Forum Post / Reply
You must log in before you can post or reply to messages.
Sealing oil pan issues??
Wednesday, July 18, 2007 4:43 PM
So on our fully built 2200 which fired up on the first crank seems to be having issues getting the damn oil pan to seal against the block. Rubber Gasket, Cork gasket didn't work... Then went directly to GM and got their now Grey gasket maker/ sealant i don't remember exactly WTF it was called but when we took the stock pan off the motor is was a just a black gob of goo all around it. So we used this method which had to let sit for 24 hrs for fully curing. Mind you we have a big show to be attending this weekend and time isn't on our side. After 26 hrs of sit time we fired her back up again and the god damn thing still leaks out of the back corner near the tranny. Its just dribbling. Were pissed off and made sure all the bolts were to spec 89ft/lbs... which they were. So we drop the pan once AGAIN... and come to find out the inside gasket was still like cake batter. It had its 24+ hrs to harden.. What gives? We took the pan off our stock motor and i made sure the surface was clean and dry to both mating surfaces again... We have to trailer the sunfire to the show tomorrow, but if it doesn't work this time what has everyone else used? This GM stuff is $20/ tube and its a small tube.

Anyone else having/ had this damn issue? This is the only thing stopping us from breaking in the engine.

Thanks in advance.




Re: Sealing oil pan issues??
Wednesday, July 18, 2007 5:30 PM
Were pissed off and made sure all the bolts were to spec 89ft/lbs... which they were. So we drop the pan once AGAIN...



89ft/lbs on the pan bolts will snap them !!


If I was you I would take the pan off and make sure the pan was not bent down at the bolt holes .. If the pan is not flat all the way down the surface that the gasket fit too,, the gasket will not seal.. and just snug the bolts up starting from the middle working your way to the ends of the pan..






Re: Sealing oil pan issues??
Wednesday, July 18, 2007 6:07 PM
Errrr.... maybe that was Inch/lbs then. I don't remember for sure anymore, it's just been giving us a pain in the ass.



Re: Sealing oil pan issues??
Thursday, July 19, 2007 3:45 AM
three days
the shop that fixed my 2200 would give me my car back any less than 3 days after they did the oil pan.....
now I see why

I just cant drive 55
Re: Sealing oil pan issues??
Thursday, July 19, 2007 10:48 AM
Well, were probably just going to let it keep setting then. Its not my call tho, since its chris's car. Any others have their wait times for this crap?



Re: Sealing oil pan issues??
Thursday, July 19, 2007 9:52 PM
89 ft/lbs...lol, Cody.

Well, like Cody said, this is a stupid problem that's keeping the car from running, but we're working on it. We bought another tube of the stuff and applied it before the show. We're going to let it cure all weekend and try'er again on Monday. I think we'll be alright this time around. I know there's more guys on here who've dropped the pan on their motors, though...same issues?






Re: Sealing oil pan issues??
Sunday, July 29, 2007 5:55 PM
Ok we let this @!#$ sit for 7 days....

We still have a @!#$ leak. Anyone got any ideas to try now, because we are flat out of them.



Re: Sealing oil pan issues??
Sunday, July 29, 2007 8:32 PM
Have you looked at the pan? or the block, for any surfaces that are not fully flat? You could buy a new oil pan from GM. I did that a while back, and it was like $90.



Re: Sealing oil pan issues??
Monday, July 30, 2007 12:08 AM
Ive always used 3M block High temp silicone (Black), Cure time was quick, Never had a problem with it. Even when using cork gasket.
Re: Sealing oil pan issues??
Tuesday, July 31, 2007 5:51 AM
Are you sure its the pan leaking and not the rear crank seal?
Just a thought.



Re: Sealing oil pan issues??
Tuesday, July 31, 2007 9:01 AM
So... you'd think you could get a pan sealed, right? It's easy enough on most engines. What if you are sealing the pan?

Like mentioned, check for bent / raised areas. Check rear main. Was the engine sealed before, or is this a fresh rebuild? Check for leaks above the flywheel.

I use rubber gasket. GMS or GMRTV isn't my first choice by any means. Pull down pan, clean everything. Don't leave a single spot of oil on the block. Get some 3M weatherstrip adhesive (I don't mess with cheaper brands). Put some dabs of RTV in the areas where the rear main cap meets the block and where the timing cover meets the block. Then put the weatherstrip adhesive on the gasket and raise it up to the block. Using washers for spacers, gently screw the pan bolts into the block to hold the gasket tight while the glue dries. Give it an hour or so and it should stick to the block when you pull the pan bolts out. Put a few more dabs of RTV on the gasket but the same areas as before. Then install the pan.

An old trick when you have to use RTV is to tighten the pan until the RTV starts to squeeze out, then stop for 15-20 minutes. This allows the RTV to start curing and to form a skin. Finish tightening as normal. RTV won't cure if there's no oxygen so sealing it up in the pan right away can cause it to take longer to cure.

-->Slow

Re: Sealing oil pan issues??
Tuesday, July 31, 2007 9:49 AM
sounds like the pan may be warped.


------------------------------------------------------------





Re: Sealing oil pan issues??
Wednesday, August 01, 2007 4:39 AM
in case you are wondering...that little bottle of grey stuff is the same as permatex ultra grey. you can get a BIG tube for about $8 at a parts store. I am hoping I dont have this problem.....well see shortly.

Did you have to actually run the motor to see the leaking, in the car, or is this like a trial run on a bench?
Re: Sealing oil pan issues??
Wednesday, August 01, 2007 9:51 AM
the motor was just fully rebuilt with everything you can name on it done after we blew up the stock one last fall due to oil pump failure. Were going to drop the tranny and try to see exactly where its coming out of. Its coming from what we think the rear part of the pan near the tranny and fly wheel. Ryan is getting very good at pulling trannies out of this sunfire.... lol. This is going to be the 4th time i think.



Forum Post / Reply
You must log in before you can post or reply to messages.

 

Start New Topic Advanced Search