dips346

hi need to know i have a 4x4 saff and want to know with standern new oversized 0.5 bore pistons will be fine with a bd 10 exhaust and a bd 14 inlet ,a friend doing the job says he has done this before and its fine but a few people have said the valves will hit please help..thanks

rsjohn

You have to have cut outs on the pistons to run BD14 cams, BD10s are fine.





john

dips346

SEE THATS WHAT I HAVE BEEN TOLD BY A FEW PEOPLE BUT THE GUY THAT REBUILT MY MATES ONE STILL SAY YOU CAN USE STANDERN PISTONS,MY MATE HAS HAD NO PROBLEMS AND HE IS RUNNING 380 BHP ISH.......STILL LOST

rsjohn

I have had 2 engines running BD14s and both had valve cut outs.
I was told you can run standard pistons but have to advance the cam timing!!!

Whats spec of your engine??



john

dips346

spec not much full rebuild ,head ported and polished,as above new pistons,greys,rs500 intercooler,air to air,normal other things map,catch tanks,and so on and a hugh £2000 turbo the guy goes as long as the bd14 is fitted and timed at tdc the valves will not hit

Chris Honeywell

I had a BD14 inlet on standard pistons
everything was fine has to be timed up spot on though

rsjohn

Not worth the risk though is it!!!!

You could get valve bounce at high rpm which could make valves hit pistions.




john

Chris Honeywell

not if you have double valve springs m8
and standard rev limit aint high really

I can't see you will have any problems

rsjohn

Why have you not got standard pistons then????





john

dips346

thats what i was told to buy ,thats why i am stuck now as he has rebuilt the engine now ,so its either put normal cams back or take out the pistons
but i was thinking if the cams worked (bd14) i might get away with it

rsjohn

If it was me and id spent the money on what you have already bought i would go BD10 route.





john

dips346

what will i lose out on if i put bd10s and not the bd 14