Can i reuse a cometic 2mm gasket

[nightrider760]

Well guys i will be tearing apart the 7mgte due a rod knock
it never overheated i rebuilt the engine so i dont know if i could reuse a cometic 2mm gasket sorry for my igonorace but give me a chance maybe someboy else will wonder the samething
thx att david

 

[IJ.]

yes

 

[CajunKenny]

You may have to strip off the Viton (or other such material) and use copper spray; but, as 1J put it... Yes...

Good luck,

 

[jdub]

Not "may"...you will have to strip off the old Viton coating. The copper spray replaces it to effect a seal. The "yes" IJ posted is a thread link

 

[grimreaper]

Does the block and head need to be decked again?

 

[92TealSupra]

if you did not tear up the surface and it is cleaned properly you do not have to resurface your block + head. You didn't. blow the hg right? Just making sure because if you did, you may have warped something .

 

[grimreaper]

not for me, just for future reference. Assuming nothing was blown and the motor had to be pulled for something else.

 

[nightrider760]

if you did not tear up the surface and it is cleaned properly you do not have to resurface your block + head. You didn't. blow the hg right? Just making sure because if you did, you may have warped something .

the head and engine were machined properly so i didnt blew the hd or over heated i guess the one of the rings or either the bearrings went out because i rev the engine just trying to go past 5k and it would go any further than that well i guess dumb me by doing so into a rebuilt engine

 

[nightrider760]

what about the cometic that doesnt need any sealing products i mean i got a cometic gasket

 

[jdub]

New MHG (regardless of brand) - No spray sealer

Used MHG (regardless of brand) - Strip off old factory Viton coating (acetone or paint thinner) and and spray a couple coats of the copper sealer. You are replacing the Viton.

 

[gaboonviper85]

don't forget that you need to take the gasket appart and clean/spray ever individual layer of said gasket.

 

[jdub]

^^^ True statement...thanks gaboon.

 

[gaboonviper85]

^^^ True statement...thanks gaboon.

no problem

 

[92TealSupra]

Note: Some MHG's you have to remove the rivets. I bought one once a long time ago and placed it on there, the rivet placed placed on the MHG and didn't seal.. So that was TMS just to let you know 1.2mm .

 

[jdub]

Titan MHGs are made by Cometic...I'm pretty sure the rivet problem has been fixed, but you always should lay a MHG on the block deck and check for any rivets that touch it. Those have to be removed.

 

[92TealSupra]

Titan MHGs are made by Cometic...I'm pretty sure the rivet problem has been fixed, but you always should lay a MHG on the block deck and check for any rivets that touch it. Those have to be removed.

Good thing they're fixed now.. :\

 

[IJ.]

Last one I saw still had the rivet in the way

 

[Poodles]

If the head is milled, you lose the clearance for that rivet. Safer to just remove the rivet though...

 

[IJ.]

The clearence is actually on the block there's a curved section that goes away when it's surfaced.

 

[Poodles]

Had to go look, you're right, but it's also on the head too