LIM Gaskets Replacement - *new question

bing · Last edited by bing on Sun May 11, 2008 3:08 pm; edited 1 time in total

Is there a write up some where, preferably with diagrams/pictures

I have removed all the LIM, fuel rails, upper intake already; but now it looks a little confusing lol

let me know

thanks

snowblindburd · Posted: Mon May 05, 2008 4:40 am Post subject:

See the last section on this page (the heading is "3.1L (VIN M) Engine "). The upper engine mount part probably doesn't apply to you, I am not familiar with the cavalier v6 engine bay though.

scott0999 · Posted: Mon May 05, 2008 7:07 am Post subject:

you removed the LIM already and its confusing?

j/p

you need to unbolt the rockers. take out the pushrods and keep them in order somewhere, then the LIM gasket comes right out

clean all the surfaces on the bottom of the LIM, heads, block, ect.

put the new gasket in first. then reinstall pushrods, torque rockers to spec

then lay down black RTV on the ends of the block..where the old RTV was..

reinstall the LIM *make sure you use loctite and torque the LIM bolts in order and to spec!*

bing · Posted: Mon May 05, 2008 12:27 pm Post subject:

Another thing I was wondering...

My LIM gaskets appear to be in good condition (they seem to be made of plastic? is that right)?

should I bother with a replacement? or just tighten it to spec after redoing the rtv seal.

I think the leak could've been as a result of loosened bolts (while I was undoing them, a couple of the diagonal bolts were especially loose)

lvcmstckz24 · Posted: Mon May 05, 2008 9:56 pm Post subject:

I would just go ahead and replace them while they are out. It never hurts to just replace them, plus on gaskets, if you try to reuse gaskets they will like 95-99% of the time not work and you end up just having to replace them anyways. I'd replace them and make sure all your bolts are tightened. Also, I believe the LIM gaskets have felt on them right? Someone remind me please!

bing · Posted: Tue May 06, 2008 12:24 am Post subject:

lol mine just look like plastic

i gotta take a closer look at it when i get over this cold

wikidblakmajik · Posted: Tue May 06, 2008 1:41 am Post subject:

Always replace gaskets once they are removed, your just asking for that LIM to leak if you re use the old crap.

bing · Posted: Tue May 06, 2008 2:58 pm Post subject:

just to confirm, I should be using this new style of LIM gaskets as per the following bulletin right?

http://aklr.free.fr/envrac/GM_3.1_3.4_TB.pdf

barry · Posted: Wed May 07, 2008 8:22 am Post subject:

Idk how far along you are, but you only have to remove 6 pushrods(3 front 3 back) to get the gaskets out. I beleive they are all the same length, so If you only take thje ones out that you need, you shouldnt have to worry about putting the wrong length rods in the wrong spot.

But I would check them just incase, it cant hurt.

Another thing, dont be afriad to put an assload of rtv in the valley. You deffinitly want that to seal good.

bing · Posted: Wed May 07, 2008 1:19 pm Post subject:

Thanks barry, that definitely helps

any of you canadian guys know a cheap place to buy the lower and upper gaskets?

Lordco want 90 bucks for a set, and that's after their "discount"

bing · Posted: Sun May 11, 2008 3:11 pm Post subject:

ok so got the stuff at lordco

on the service bulletin it says i need some special bolts coated with a thread sealant

and since i'm not getting gm stuff, can i just apply some high temp thread sealant on instead?

It's not the loctite stuff, because i still might want them off later lol

it says it "prevents leakage due to viberation, temperature, clyclind and extreme pressures"

is that the right stuff?

thanks guys

spaceman · Posted: Sun May 11, 2008 4:46 pm Post subject:

Spend the money and get the Fel-pro gasket set and use the blue loctite.

bing · Posted: Sun May 11, 2008 11:52 pm Post subject:

yeah lordco carries fel-pro gaskets

blue loctite eh, would the bolts still come out later on?

macneil · Posted: Mon May 12, 2008 1:00 am Post subject:

Blue loctite would still let them come loose later, just don't use red

bing · Posted: Mon May 12, 2008 1:38 am Post subject:

lol cooooool

thanks

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