please can anyone help , are the RB25 exhaust and inlet cam followers the same for a neo R34 engine. Just rebuilt my engine and i seem to have a top end rattle ( very quiet ) but none the less it was never there before and it does'nt do it on idle just when i raise the revs slightly .The cams and springs are colour coded red and green respectivly so no missunderstanding there , the only thing i think i could have done even though i had marked either side 1 to 12 and " in / ex " is get them on the wrong side and mix them up due to probably spinning the head round while i assembled it , and forgetting to spin it back round.I know the springs are different lengths ,and the bit of valve that is left showing above the spring retainer and collets is too on one side. Other than that all is running perfect and very smooth with good oil pressure and temps are all good. Dont want to take it on a road test until i know what the noise is incase i do any damage to it.
Many thanks
Mike