Hey guys I'm chasing a part number for off the shelf cp Pistons to suit rb30et there are two types on with a gtr dish and the other to suit rb30det I've been speaking with a eBay Supplyer that tells me cp don't do a piston to suit the rb30et only twin cam rb30s he said the twin cam Pistons may work but wound have the correct compression ratio and has quoted me $720 usd to get a custom set made only worrie is if they don't make them exactly I will end up with custom Pistons that won't work for me I'd rather get a off the shelf part number with suitable comp ratio let me know what part no piston and comp ratio used in your rb30 sohc motors Cheers

Ask Spool imports what they are http://www.spoolimports.com/spool-en...hc-rebuild-kit (http://www.spoolimports.com/spool-engine-rebuild-kits/nissan/rb30et-sohc-rebuild-kit/nissan-rb30et-sohc-rebuild-kit)

Twin cam ones are fine. 95% of rb30s with aftermarket pistons are using pistons designed for twin cam applications. Je/nitto make the only aftermarket piston specifically for single cam use. (as far as i know)

Seen thouse spool import pistons they must be a custom order that spool imports do

Dave, give Spool a ring or send an email and ask them if they're custom Some original photos have not been recovered yet.

Quantum industries and i think Spool was getting them made as a custom pistons and selling them for rb30et. Since quantum has closed down it has made it very hard to buy them, spool must be the only supplier left? I rather use them for 98 fuels, or as said use the conversion piston for e85 fuel. But in saying that i'd buy nitto's first

I've got a set of 20's that I got in error when I need 40's. I'll try and DL the pics.

Whats the details on them ?

Forging 85-2A Bore Diameter 3.406 Clearance 0.0035 Compression height 1.28 Piston gauge point 0.5" up from bottom skirt 3.4025 Top groove width 0.04 Top groove Diameter 3.091 2nd groove width 0.048 2nd groove Diameter 3.075 3rd groove width 0.111 3rd groove Diameter 3.097 intake valve relief -0.28 exhaust valve relief -0.18 Dish depth -0.28 Pin diameter 0.866 Pin length 2.25 Lock type 0.63 wire gram weight 325 cam profile CP832XS

I have a set JE's for a RB30DET or NA conversion, bought two sets and never built the second engine because I haven't killed the first. JE (SRP) 253899 8.6:1 but depends on how much you machine things or mod combustion chamber.

Xec747 what brand and comp ratio and how much do you want for them and baichi how much you after for the je pistons

They are CP's, comp I'm not sure and price wise I haven't thought of but enough for me to get replacements of any forgie.

Quote: Originally Posted by rb25vlt8 [View Post] Xec747 what brand and comp ratio and how much do you want for them and baichi how much you after for the je pistons I'm after $750.