retrotec

Does anyone know what part of the stock rb25 inlet manifold makes it restrictive? Would extrude honing the lower half and removing the odd shaped bumps in the top half benefit much? Has anyone used a RIPS plenom yet? PS: Aiming for 450rwhp in a 1200 kg car running a RB30DET.

I was waiting for these kind of replies. A RTA approved engineer has guidelines on ADR's and must follow them. Some states have stricter regs than ADR's and these regs in that state take precedence over the ADRs (The regs are stricter than the ADRs). You can still get defected if the engineer hasn't examined the car throughly or has missed a detail on the car that affects ADRs. To become a RTA approved engineer in NSW is not an easy task, there are a few engineers in NSW who are turning a blind eye for that extra dollar (this is happening alot in QLD. The Rules and regs are getting tighter every year in NSW, This has forced some engineering signatories to shut up shop coz they are not able to engineer cars due to the stricter rules. I've been defected for things which were ADR compliant and listed on the engineers report but to no avail the traffic cop insisted that it was a defect. My experience working along side RTA approved engineers didnt seem to register in the cops head. Yep your spot on. They keep moving the goal posts making it impossible. Even with a report, visual changes always bring unwanted attention. Dont want the attention? loose those carbon fibre bonnets and aftermarket wings etc......

If the regs are interpreted as the engineer does then it's done the right way. The cop with very little engineering experience is the one who needs to be eduacted on this issue. BTW, QLD's system of mod plates and many of their gay regs dont hold up in NSW. NSW are far stricter on things like pods and high mount turbos, but the NSW reports are more detailed and all are kept on the NSW police database. PS: I used to be in the RTA approved engineer game :flamed:

Unless you have an engineers report for those changes.

Could someone point out the quench area using a pic? dont quite understand ya :Oops:

www.greenline.jp or www.nengun.com

Haha that is so true, always say VL, not skyline when buying suitable parts, water pump etc...

Are these pistons ceramic coated? Most forgies sold at that price are. At $7290 I'd be looking at a RB30 bottom end.

If I was to setup my motor for NOS (RB30DET- wiseco forgies etc...). What clearances and other parts of the engine should be changed internally to suit ?

Thanks for clearing that up. Where would the line from a plumb back BOV connect to the piping in this situation?. (the line that recirculates the air) Mark.

Gday ppl, my first post here. :headspin: Reading this on Skylinesdownunder http://forums.skylinesdownunder.co.nz/show...&threadid=37564 There is no concrete proof of the effects on that forum, has anyone tried doing this?, Would there be any problems doing it this way. I don't intend doing this but I am curious. Mark.