Neo Cam Followers

[GTMike]

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

[boostn0199]

So what ie it that you think you mixed up didnt quite get it reading your post?

[GTMike]

i know ive got the valves and springs and cams correct as they are all colour coded from the factory red / green. I belive i've put the cam followers / solid lifters on the wrong sides , ie exhaust on the inlet and vice a versa. What i need to know is are the solid lifters on a neo the same or are they different in any way. If this was so it would explain the possible top end rattle i have when i try to rev the car over idle speed. At idle the car runs and sound perfectly ok , although the speed is a bit up and down but i put this down to me needing to set up the timimng with a timing gun

Cheers

[Simon-S14]

all the buckets and shims are same for in/ex.. just like RB26/ however the shimms might vary in thickness so check the clearances with some feelers.. use the RB26 FSM to help you with this,

[The Dan]

If you don't have the rattle at idle, then it is unlikely to be a top end rattle