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Rb30de

VashR31

By VashR31,
in Engines & Forced Induction

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VashR31 Collaborator

VashR31

Posted
Posted

Hey there,

Build a rb25de + rb30e, Aftermarket set of cam shafts, And been told to use flat top pistons for the higher comp.

But after having a look at stock rb30e pistons, there are ingraves for the valves to 'sit' Wouldnt flat tops + Aggressive cams mean theres a good chance something is going to kiss each other... hard.?

I know there is a thread with 290 pages of rb30de convo goodness but bloody hell!

*Injector upgrade? Its going to be NA, will the rb25de 'jectors be enough?

*Anymore pointers would be great!

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GTS4WD Grand Master

GTS4WD

Posted
Posted (edited)

have a look at this..

http://www.skylinesaustralia.com/forums/Po...sp-t194033.html

I heard of people using both sets of pistons..

Injectors should be ok.. unless your wianting to push more than say 130kw.. then RB25DET is the go.. cheap alutnatives.. same with a fuel pump..

Where are you getting ur cams from?.. from a turbo? NA's get more power from the overlap in the cams.. so if your using turbo cams you may not be extracting the full potential out of the engine..

Also.. the CR your running will also determin if things go bump in your engine..

max stock regrounded cams is on the link above too..

Hope it helps mate

Edited by GTS4WD
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Eug Grand Master

Eug

Posted
Posted

most of the info is readily available.

valve vs. piston, head gasket? head/block decking? look into it

try searching for compression ratios around the forum

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