Rb25 Stock Internals

[Maddog309]

This has probably been asked a million times. Is 300rwkw unreliable for a stock internal rb25. I understand that the tune and maintanance obviously plays a big part. Has anyone else had much success with this power level? And also, what do you suggest a good power level for street?

[Ben C34]

look at the 300kw plus unopened club thread .

[KiwiRS4T]

You've already asked this question in your other thread. There is no definitive answer. People run 300kw on unopened motors for years. Yours could go bang after 2 days. As I said before if you are going to sell it just repair and reassemble, strip off the expensive parts and sell the lot.

If you are going to keep it do it properly - measure the bores and see if it needs a rebore or just new rings and bearings and get some decent rod bolts and balance etc. Swap the 3540 for something more suitable.

What is a good power level for the street is entirely subjective - 260kw will be pretty quick but for some 400 is not enough.

[boostn0199]

Yes it is fine especially on a street car that gets nowhere near the punishment of a track car and if on e85 it is almost bulletproof at 300, you can start looking at 350 and still be safe on e85.

[hypergear]

Get some forged pistons and valve springs then build it properly. Plus they aren't that expansive to buy. RB25dets really pays for doing them properly.

[75coupe]

Yes it has been asked a million times!

Did you read the replies???