I want to use a 1.5mm decomp plate with only 1 gasket between head and plate. Ferriday engineering say this is the best way, and they seal the plate to the block using a high temp sealant. They use alloy plates for this method though.

I can get either a mild steel or a stainless plate for £25 on ebay, but all the listings for stainless plates say to use 2 gaskets.

Can anyone tell me their experience with whatever arrangement they used? And what the sealant is I will need to bond the plate to the block?

2 gaskets sounds like a bad idea to me and I dont want to drop the compression too much as I'm only running 1 bar.

Cheers.

 

I would stick with what ever Mike says at Ferriday, he knows his stuff.

 

I used wellseal to do mine years ago, worked fine.

 

i have a ferriday decomp plate and a genuine Ford headgasket, no sealant used, and im putting 1.6 bar through it.

 

Are the plates your using stainless, mild or alloy?

 

cant remember i just rang up Ferriday told them what i was doing and they sent it out

 

Anyone used a stainless plate sealed to the block Successfully? Or only Alloy?

 

Mine were stainless steal, I had a load laser cut back then.

 

What boost were you putting through It?

 

I can't remember mate was years ago now, I used sitech racing for my headgaskets.

 

Cheers