Rb26 Rods N Pistons

[danielson]

quik qtn.. are rb26dett rods and pistons the same dimentions as rb25det rods and pistons?as in deck clearance, rod length etc...

Edited May 1, 2006 by danielson

[discopotato03]

RB25 and 26 blocks are the same height from crank centre to deck surface. The rods are the same centre to centre length but the gudgeon pin diametre is larger for RB26 . Logically if the rod length is the same and ditto for the block heights the RB26 pistons have a lower crown height to allow for the slightly longer stroke .

It is common to see RB25DET's with RB26 cranks rods and pistons . If you can get the bits for the right money its a worthwhile upgrade , better components and slightly lower compression ratio . Any easy capacity increase is a big bonus especially if it does not weaken the bottom end .

If possible I would do the crank nose mod or get a later big nose R33 RB26 crank to avoid any oil pump gear splitting issues .

Cheers A .