Plenum Sealant / gasket

[Tegriffic]

Ok so time to put the plenum back on after fuel hose replacement. I see there are various opinions as to what sealant to use. When I removed it the sealant was black and not set hard - it actually came off easily almost in one piece. Is this likely to be a RTV Silicone Sealer ?

Also, I've seen some debate about a spacer gasket for the plenum to increase the air volume. I'm curious, doubting it would make too much difference - has anyone actually made that modification and found any difference ?

Thanks.

[Belle427]

For sealant I'd just use a light coating of hylomar, I don't think it has any as standard.
Can comment on the spacer but I've read some reporting they notice a difference, personally i think the only thing it does is empty your wallet.

[stevesprint]

Belle427 said:

For sealant I'd just use a light coating of hylomar, I don't think it has any as standard.
Can comment on the spacer but I've read some reporting they notice a difference, personally i think the only thing it does is empty your wallet.

Historically always Hylomar, however these days any suitable RTV Silicone works

[phillpot]

Spacer alone will not make any noticeable improvement, the extra volume is negligible, similarly any minor reduction in temperature (presuming you are looking at a fibre/composite spacer, not alluminium) will most likely go unnoticed?

Edited by phillpot on Tuesday 23 August 22:56

[stevesprint]

phillpot said:

Spacer alone will not make any noticeable improvement, the extra volume is negligible, similarly any minor reduction in temperature (presuming you are looking at a fibre/composite spacer, not alluminium) will most likely go unnoticed?

Good to know, thanks

[Tegriffic]

Ok thanks for the responses. All back together now.