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hey guys

.

i read through most of the rb30 conversion thread and i have some questions please help if you can

i have a rebuilt forged rb30et and a r32 rb25de non vct head

i plan on building a 25/30

how can i increase compression from the horribly low comp if i just combine the two

idealy id like around 8.5:1

i am doing all the work myself except the machining so i need to know what to tell the workshop

thanks heaps

Ben

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need to swap pistons to increase the CR to a respectable level mate, the general consensus is to run rb30e pistons to achieve roughly the CR your looking for.

a few manufacturers actually make pistons for rb30det conversions with CRs around the 9 mark, that would be the ticket IMHO

GL

alright thanks mate might see what i can acheive with the sohc head for now seems ashame to pull it apart after last owner just had it rebuilt and had receipts for close to 4k just for parts

Edited by shakotan-cefiro
alright thanks mate might see what i can acheive with the sohc head for now seems ashame to pull it apart after last owner just had it rebuilt and had receipts for close to 4k just for parts

sell the pistons to me for a reasonable price and buy the right ones for the det head...easy

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