100,000 miles

[neo10246]

This has probably been covered here at some point in the past. I just learned that the intake manifold gaskets usually fail at around 100,000 miles and it will cost me around $600.00 to fix. GM cheaped out and installed plastic gaskets which are now replaced with rubber covered aluminum that last well over 100,000 miles. So if you're buying used just beware. My vehicle has 92,000 on it.

[coupe]

Plastic? Ive never seen plastic gaskets.

The LIM can start leaking at 2 miles or 100,000, there is no time line.

[99GrandAMSE]

... actually Rand, I think he is referring to the plastic frame of the original gaskets that had 'rubber' adhered to it for sealing ... it was the plastic portion that 'cracked' on mine :(

[coupe]

... actually Rand, I think he is referring to the plastic frame of the original gaskets that had 'rubber' adhered to it for sealing ... it was the plastic portion that 'cracked' on mine :(

Thats what i thought at first but its rubber not plastic and its not the entire gasket.


Hopefully he isnt going to have a LIM done just becuase he is close to 100K miles, if its not leaking dont fix it.

[99GrandAMSE]

... well, it might technically be plastic (I am not sure) but it certainly does "look and feel like" plastic ;) :lol: ... I know as here is a picture of what came out of mine when I did it two years ago :)

http://www.gaownersclub.com/kbruce/lim/lim_gasket_fix_10.jpg (http://www.gaownersclub.com/forum/showthread.php?t=44742&highlight=lim)

[Silversmok3]

This has probably been covered here at some point in the past. I just learned that the intake manifold gaskets usually fail at around 100,000 miles and it will cost me around $600.00 to fix. GM cheaped out and installed plastic gaskets which are now replaced with rubber covered aluminum that last well over 100,000 miles. So if you're buying used just beware. My vehicle has 92,000 on it.

Unless you drive a 4 cylinder :lol:( sips umbrella cocktail)







/jk.

[coupe]

... well, it might technically be plastic (I am not sure) but it certainly does "look and feel like" plastic ;) :lol: ... I know as here is a picture of what came out of mine when I did it two years ago :)

http://www.gaownersclub.com/kbruce/lim/lim_gasket_fix_10.jpg (http://www.gaownersclub.com/forum/showthread.php?t=44742&highlight=lim)

I always thought about it more as a rubber.

When i think about plastic i think of hard material.

[99GrandAMSE]

... the black part is 'hard' and the white part is 'soft rubber like'

[coupe]

I dont remember it being like that at all :lol:

Maybe i shouldnt be drinking so heavy when i work on vehicles

[99GrandAMSE]

:funny: ... it has to be 'hard' as it also act as the push rod guides, IIRC

[Matt95GT]

Unless you drive a 4 cylinder :lol:( sips umbrella cocktail)


/jk.

Actually the 2.4 uses a plastic intake manifold gasket too. (and plastic intake manifold itself for that matter) Luckily, it isn't related to any engine fluids.

... the black part is 'hard' and the white part is 'soft rubber like'

Yup, that's exactly how the gasket was when we did the LIM gasket on Seth's GA.

[neo10246]

Thats what i thought at first but its rubber not plastic and its not the entire gasket.


Hopefully he isnt going to have a LIM done just becuase he is close to 100K miles, if its not leaking dont fix it.

Oh the coolant was definetely leaking into the oil. Lots of milky stuff all over the inside of the crank case and the only reason I checked is it was oil change time. Also two pushrods were damaged and lifters. They seemed to be slamming into each other instead of "gliding" on the ball end of the pushrods.

[GtAudioFreak]

Mine was done at 60k miles.