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RB 26 forged pistons

seeyagtr

By seeyagtr,
in General Automotive Discussion

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seeyagtr Enthusiast

seeyagtr

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I had a failure on number 5 big end (not alot of fun) ,so i strip down the engine to then find that my bores are 87mm and are badly scored! they will clean up at 88mm (wich will reduce the block strengh and limit horse power) but then the next problem is that i need to find a good set of forged pistons that retain the 8.5:1 commpression ratio. I since then have found out the ARIAS piston do not go out to 88mm. WISCO made a 88mm but reduce the commpression and are of unkown quailty. Can any recconmend what i can do?? thanks :freak:

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https://www.sau.com.au/forums/topic/52111-rb-26-forged-pistons/
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NA_R33 Grand Master

NA_R33

Posted
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ive used wiseco in quite a few of my race bike, seeyagtr, im surprised wiseco wont custom build a set for you, and yes i realise owning a GTR sends u broke, i think its merli who summed it up quite well, GTR=Money Pit

awurth Collaborator

awurth

Posted
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I only hear good things about Wiseco, particularly from guys with race bikes as well as race engine builders such as JHH Engineering?! Anyone have other comments on these pistons??

I ran wiseco's in my GTS-t and they handled it just fine. The guy who bought it off me flogged the hell out of it and did a big end as well, piston's where like the day I bought them. same story basically they are a reputable brand with a good product. it's all the same grade aluminium in the end!

infected flow Rising Star

infected flow

Posted
Posted

was just about to say resleeve bottom end sice only one cylinder should b fine with the heat side of things and strength.tomei and acl pistons do 88 and are the shit also with compresion they can shave head or thin head gasket to keep compression up.

seeyagtr Enthusiast

seeyagtr

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Thanks for all the info!! It would be sweet to get hold of a secondhand block, even out to 87mm ( good bore )would be sweet but my efforts in tying to get hold of one have proved fruitless! To use 88mm pistons and then to shave the block/head would be the go. I also had bad scoring on 2 and 4 bores that might clean up at 87.5 but i am still left with a floged out number 5!!!! I have not ket priced up a full resleve. I can get the JE Forged Pistons for $1600 custom made wich i did not think was too bad,

I have to weight up the best way to go

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