just for fun

[Twistygit]

hi whats your opinion on wether to remove ex manifolds while i'm doing a bit. at the moment i have got rockers and plenum off and replacing water hoses and pipes.
was thinking of removing pre-cats or will the bits i have removed make it no easier?

[Colin L]

You need them off to do it, before you put them back on you want to make sure no bits can get back in the engine.
Ensure you cleaned it all out before refiting the manifolds
Colin l

[Twistygit]

yeah but do you need the bits i removed to get the manifolds off?

[anonymous-user]

Sounds like you have more space with all these bits off so yes do the manifolds but be prepared for some swearing, use plenty of plusgas/wd40 on bolts before starting. Pre cats out does make a difference on sound and slight performance gain.

[Twistygit]

so if i where to remove manifolds and then pre-cats, what about wrapping the manifolds is this of any benefit or not?

[anonymous-user]

General opion is not worth it if cooling system is working ok, just transfers the heat further down the exhaust system.

[Goaty Bill]

thedoc50 said:

General opion is not worth it if cooling system is working ok, just transfers the heat
further down the exhaust system.

And wrapping can hold moisture against the manifolds. Not a great idea.
The better option for heat reduction is ceramic coating, but I hear that is a bit pricey

[Alexdaredevilz]

DO NOT remove the manifolds

It's 10x easier to remove the precats with them on, just start that car up after to remove the bits with out the y peice on