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02-15-2011
Curious how difficult it is to replace these, the last car i did this to was a 79 cutlass, much more room and less extras to remove to get to it, it looks easy enough but looks can be deceiving.Replacing because i have a small oil leak, i can smell it buring and see it on the front exhaust manifold and have small drips on garage floor at the rear of the engine. Any help and or advice is appreciated. Thanks!
Last edited by bowsox88; 02-15-2011 at 10:19 AM. Reason: btw
02-15-2011
What do you drive?
3.1L
3.4L
3.8L NA
3.8L Sc
IMO the 3.8's are easy. I'd rather burn the other two motors.
02-15-2011
Sorry left out some important info there 3.8
02-15-2011
Not to be a dickwad...but would you mind telling us which of the two 3.8's you have?
We are making progress. Really
02-15-2011
Its just a GT so id have to guess the 3.8NA if the 3.8sc is supercharged...im sure i seem pretty dumb at this point but this is all new to me sorry bare with me im making progress
02-15-2011
No worries man..
The LIM gaskets are relatively easy, the valve covers are also pretty easy. When you do the swap, being NA, I would suggest putting a new UIM on as well. This is because they tend to crack over a lot of heat cycles in the EGR area. This allows cooalnt into the intake and it hydrolocks the motor.
02-15-2011
LIM and UIM sorry im assumeing here is lower and upper....and the upper again i assume is the black section on top of the cast intake. Sorry not trying to be difficult just want to be sure i get everything i need before i get into it. Thanks again!
02-15-2011
When he does the UIM he can use the metal UIM in place of the plastic one. Basically so he won't have the issues again. Unless you are going to top swap it.
**EDIT** I should have told you it is more work than just buying a new plastic one but if it were me and you are going to keep the car for a while I would do it. But that is just me.
Example:
Last edited by Pure2sin; 02-15-2011 at 07:40 PM.
02-15-2011
Ok i understand all this now and yes i would like to replace the plastic UIM, now my question is where is the best place to get a metal UIM? Napa, Autozone....
02-15-2011
you cant use the metal one unless you bore out the EGR inlet to fit the EGR stove pipe on the L36 LIM. just get a replacement plastic one from your local auto parts store and be done with it.
02-15-2011
Yeah sorry. There is more work involved than just bolting it on. I don't believe you have to bore the hole out but either shorten the L36 stove pipe or use a L26 stove pipe. An adapter plate for the TB will needed. Also some work on the UIM to account for the PCV and IAT on the L26 UIM.
If you like doing the work and wanna do it here it is:
BonnevillePRO.com • View topic - L26 aluminum UIM on L36--Done! With results!!
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