FastBlackTA

iTrader: (7)

I reused a set of manifold gaskets on my vette to get it running so I'm swapping them out on wednesday (along with adding another methanol nozzle) so I can get off to the dyno.

Are you turbo guys running gaskets and if so, are you all using copper rtv on them?

stevieturbo

You should never need sealer on any LS gasket.

badass99ss

iTrader: (17)

+1....I did use some on the corners of the timing cover to oil pan tho.

NemeSS

iTrader: (127)

ive never had to use sealer anywhere on the motor, as long as the silicone was intact on the aluminum gaskets

FastBlackTA

iTrader: (7)

Should have clarified in my first post:

I have seen people use rtv on exhaust manifolds without gaskets....but was wondering if anybody uses it on the aluminum mls exhaust manifold gaskets.

Mr.MartyStone

iTrader: (12)

Yes, definitely ditch the gaskets and run RTV.

theblur98ss

iTrader: (71)

I always thought the stock metal gaskets were good. So you guys are just getting rid of them and smearing high temp rtv on the headers and bolting them down?

badass99ss

iTrader: (17)

I have never heard of using RTV instead of exhaust manifold gaskets ....I highly recommend Percy's xx carbon gaskets. They form/crush to fit, and I have never had an issue.

Troy

z06kilr

Ive always use gasket and copper rtv on mine. never have leaks.

DanZ28

iTrader: (5)

never used rtv on the manifolds/headers, shouldn't need to or something is up.

lubsvitek

iTrader: (2)

I usually put some high temp copper rtv on exhaust gaskets and havent had any leaks. It'll prob burn off anyways but theres nothing worse than having an annoying exhaust leak and having to reassemble, so might as well.

ls1290

iTrader: (20)

+1. They are designed not to need any.

Keith

Reject

iTrader: (24)

ok i'm stupid, what is LS gaskets? i know the multilayered gaskets but LS ?

...or are yall talking about LSx gaskets ?

aaarg to early and monday

Z06PSI

iTrader: (33)

Yes all gaskets for the LSX engines seal themselves as long as everything is set and torqued to spec. Always used dry here with no problems.

Reject

iTrader: (24)

yeah ok yeah i was trying to figure out what LS was standing for i kept going through different words to see if it would work and Loose Seals were the best i could get lol

stevieturbo

Ever think the term "LS" might refer to an LS based engine ??

LS1, LS2, LS3, LS6, LS7 etc etc.....

Reject

iTrader: (24)

and a chevy truck option

Mr.MartyStone

iTrader: (12)

Then you need to look at what all the real high hp guys are doing (yes there are other motors besides ls motors). It is very common to not use header gaskets and just use RTV. When you start making real power you'll have problems with traditional gaskets...especially just carbon gaskets. At the bare minimum run an aluminum gasket.

Marty

stevieturbo

LS exhaust gaskets arent traditional crappy gaskets. If the stock exhaust manifold gaskets are leaking under boost, then you need the flanges machined flat.

alwaysinboost

multi-layered stock metal gaskets with copper spray and I never had an issue.