Custom Piston Choice

[murrayis]

Guys,

I've read many threads on many forums regarding which piston is best. I'm looking to Replace my Custom Ross pistons with a off the shelf item for my Rb20 stroker. I'm looking at using a 83mm CA18DET piston but unsure which make to order.

I'm comparing Supertech, CP & WISECO currently - All vary massively in price and availability. Researching Supertech I've not been able to find much positive or negative towards their piston but they are well known for their Engine accessories eg Valves etc to be excellent value and build.

CP & WISECO have plenty on info but still welcome feedback

Cheers

Cameron

[djr81]

Try Special Piston Services in Dandenong. 03 9793 1110. They will make whatever you want.

[GTSBoy]

Um. 5mm overbore?

[murrayis]

Indeed

[MagicMikeZ32]

How much wall is there to work with???

[Roy]

I take it based upon reading your post that you have not had a huige amount of success with the dramas you were having. I have some brand new Tomei 2.4L pistons that if you want I can have a hard think about price I am after and sell to you. I have been keeping them for an R31 coupe I will one day buy but sounds like you may need them mroe than me. They are only 81 or 82mm though from memory.

[murrayis]

Roy,

Yea you are correct unfortunately, Few items missing. I couldn't do that to you but the offer is very much appreciated as I know you've had them put aside for some time!

I wasn't wanting to go to 83mm pistons because i'd want to sleeve the block for a little more safety however I see Tomei make a 83.5mm Head Gasket for a rb20

I've got to get time to strip the block all the way down and looking at the bore the pistons have been walking around a little so My guess is they are past their used by date. The bore currently is a little over 82mm

[chairman]

cp flat tops $750 US dollars

[33GTRV]

Sps. I have personally built, owned, tuned and raced one of the biggest hp ea81t Subaru motors in the world and spa was my piston manufacturer. 480+ without gas and it never shat a piston. You can order whatever you like. Ring thickness, pin size, comp height, comp, reliefs, you name it they can do it.

[murrayis]

how are they for cost?

[33GTRV]

It's a custom piston from a blank. It totally depends on spec. It's like asking what it's gonna cost to get to the moon. Too many variables mang.

[discopotato03]

480 horsepower from a dinosaur EA81 turbo engine , there wouldn't have been much Subaru left in it . Here in Australia the best legal EA82 Grp A rally engines cranked out 190 horses with Subaru's own kit of works parts .

Let me see , single inlet port pushrod heads who's claim to fame was cast in injector bosses .