Jump to content

@$*@$@$&# LIM!!11FIVE


digitaloutsider

Recommended Posts

Posted

I'm posting this in powertrain because the W-bodies share this engine too. The 3400 in the Montana has a leaking LIM. There's coolant in the oil, and it looks like a milky sludge (seen it many a time before). All I really need to know is what gasket people use most (Felpro, GM OEM, etc.) and what other parts or speciality tools are required.

 

Thanks guys.. :(

Posted

Felpro has worked fine for my valve covers, but I don't know about head/intake gaskets since I haven't had to do that work yet.

Posted
I'm posting this in powertrain because the W-bodies share this engine too. The 3400 in the Montana has a leaking LIM. There's coolant in the oil, and it looks like a milky sludge (seen it many a time before). All I really need to know is what gasket people use most (Felpro, GM OEM, etc.) and what other parts or speciality tools are required.

 

Thanks guys.. :(

GM oem, because they have corrected the LIM problem now

Posted

Felpro also updated thier design to fix the cracking issue however they took a different approach. GM uses metal tabs around the bolt holes in the gasket to prevent cracking from over torquing (the reason for the cracking). Felpro used a different kind of plastic for the frame and made it a bit beefier in those areas.

 

Both styles make use of a revised rubber/urthane material for the seal. You can use either but I would stick with GM. Also be sure to get the revised LIM bolts annd have a GM tech print the TSB for you which has the revised torque spec and procedure.

 

Have fun.

Posted

Bought the gasket kit and bolts from GM. Set me back about $125. I'm gonna get ahold of my buddy who has his own garage. I'm not doing this in my front yard. :lol:

Posted
Bought the gasket kit and bolts from GM. Set me back about $125. I'm gonna get ahold of my buddy who has his own garage. I'm not doing this in my front yard. :lol:

 

Glad you bought the GM ones. Good luck with it.

Posted

i like the design of the GM ones, i'd like to see a set of felpro gaskets for comparision however.

Posted

I did mine in my parking lot. Took me about a 12 pack to get it finished.

 

The proper torque specs should be on a sheet with the intake gaskets.

Posted

well your average w-body has alot more room to work with then the cramped quaters that a u vans got so i can see that taking awhile longer.

Posted
well your average w-body has alot more room to work with then the cramped quaters that a u vans got so i can see that taking awhile longer.

 

Ah... crap, I was thinking this was his cutty. Guess I need to read more.

Posted
well your average w-body has alot more room to work with then the cramped quaters that a u vans got so i can see that taking awhile longer.

 

Ah... crap, I was thinking this was his cutty. Guess I need to read more.

:lol: :lol:

 

Yeah.. it's in the damn Montana. Ughghgh.h,.ht,rhther,. I might get up the gumption to do it tomorrow.

Posted

Other than the wiper transmission getting in the way, and the alternator bracket bolts being barely visible w/o a mirror, it's not much harder. Been there done that. May wanna change out the spark plugs and wires if they haven't been done, at the same time since there'll be a good amount of extra room for the rears.

Posted

I hate this engine so much..

 

The only thing I hate worse than the 3400 right now is the stupid vehicle they decided to try and shove it in.

Posted

I've given up on this for now.. I don't have the patience to even look at that stupid POS at the moment. If this was in a Grand Am or something I wouldn't care. It's a nightmare in that goddamn U-van..

Posted

GM did update the design of the LIM gaksets after 1998 I think, and the new ones are much stronger. I've never used anything but the factory gaskets so that's all I can speak to.

Posted
GM did update the design of the LIM gaksets after 1998 I think, and the new ones are much stronger. I've never used anything but the factory gaskets so that's all I can speak to.

 

try 2003, 99-2002 1/2 all have the problem, but the 2003+ grand ams dont

Posted

You don't have to pull the rear valve cover off to do a lower intake job.....this means the coil packs and alternator don't have to come off either.

 

If its a 'traditional' 3100 or 3400, the intake leaks. Haven't seen any of the Equinox or Z Malibu cars yet.

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...