I didnt torque my LIM bolts enough [Archive] - GrandAmGT.com Forum

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Jhashwa
07-07-2009, 10:04 PM
I did my lim gaskets last weekend, and I have been driving the car ever since. I used torque specs from the write up I found on this site from a search, but it stated only the first torque values and not the second step! My corner bolts are only at 115 inchs. They should be at 18 ft lbs. Darn. I suppose I should tighten them up? Got about 100 miles on it. Used Fel Pro permadrys.

Jhashwa
07-07-2009, 10:10 PM
angrysk8r! your walkthrough on lim gaskets has incorrect torque specs for the lim!!

-trigger-
07-07-2009, 10:19 PM
are there any leaks?

AleroB888
07-07-2009, 10:37 PM
angrysk8r! your walkthrough on lim gaskets has incorrect torque specs for the lim!!

Don't think so, Haynes' says 115 in-lbs for step 2, 18 ft-lbs for UIM.....

-trigger-
07-07-2009, 10:43 PM
http://wot-tech.com/shop/cat_66.html

I think he is talking about the specs from this site

AleroB888
07-07-2009, 10:57 PM
http://wot-tech.com/shop/cat_66.html

I think he is talking about the specs from this site

If that's what WOT tech recommends, it's good enough for me, but I think I used the 115 lb spec, no issues so far.

Jhashwa
07-07-2009, 11:48 PM
Its not leaking, but as i said I have only put on maybe 100 miles since I replaced them.

I got the specs from 60v6.com, but they're spec sheet looks exactly the same as that one.

This sucks :( I guess I should find out the torque spec 100% before I go tampering with a completed job!

AaronGTR
07-08-2009, 12:21 AM
Don't think so, Haynes' says 115 in-lbs for step 2, 18 ft-lbs for UIM.....

Haynes is rarely right IMO. I usually go by the factory manual, but in this case you also need to know that GM released a TSB to all the dealer service departments with new procedures for the LIM gasket replacement on all 3400's. Part of it is that torquing the bolts down is supposed to be a two step procedure and the corner bolts (short ones on an angle) are supposed to be tightened to 18 ft/lbs.

This info has been posted on here multiple times. I guess no one ever added it to the "how to" write up. I had thought about making an updated one, but I don't have the pics of all the steps and I'm not going to tear my engine apart when it isn't leaking. ;) That and my pics of my procedure wouldn't look quite the same since the engine is so far from stock. Step one: disconnect battery... oh wait it's in the trunk. Step two: remove supercharger... hold on, wtf?! lol

aiixon
07-08-2009, 10:45 PM
Hahahaha Aaron that's hilarious...

PhantomLover007
07-09-2009, 09:47 PM
Yeah. That's not gonna work for me Aaron... lol lol