+1 to RB25DET rebuild count

[GTS-t VSPEC]

I already got 300rwkw from a stock RB25, now I'm aiming for 400rwkw from a forged internal engine:D

[zanda]

I already got 300rwkw from a stock RB25, now I'm aiming for 400rwkw from a forged internal engine:D

lol. sounds like it was a pretty reliable 300rwkw eh?

[MrMayhem]

Paul I think you should be more specific for the fans on how long it lasted before people try to emulate your results unaware its a grenade

[Boostzor]

FIRE IN THE HOLE!!!! :microwave:

Did it actually blow though? or u just knew it would?

I think its basic knowledge that anything over 250rwhp on stock internals is a game of luck and is just a matter of time.

[GTS-t VSPEC]

It had already broken well before 300rwkw, but it still held together, and never totally broke:D But, I wouldn't recomment more than 350rwhp from an RB25, otherwise it's lifespan will be counted in weeks:D

[RB20LagWagon]

obviously there are levels of broken, if a broken engine can make 300rwkws, i think my engine was broken from factory

[GTS-t VSPEC]

It was consuming 1/2 a litre of oil a week, thought it was turbo seal, so change to a bigger turbo, and made 300+rwkw, and it was still driving when I decided the ringlands were broken and gave the engine a rest.

[RB20LagWagon]

For any of the other broken rb25s my friend has a complete long motor minus turbo but including loom that is for sale, it will be a decent price pm me for more details.

Cheers

Sean

[Gradenko]

Just a quick update, picked up a fresh RB30 block today (thanks Woody!). This thing is brand new, straight from Nissan's stock shelves and never been used before.

[GTS-t VSPEC]

Well there is one less borken RB25 now, as Niz's engine is back in with forgies, and we've just finished running it in. Mine and Rob's should be ready for next weekend, giving us time to set the cars up for Drag Combat.

[Gradenko]

Another update, the Ogura flywheel came in ex-Japan today. 4.8kg's never looked so tasty .

Expecting more to come in tomorrow.

[G0DF4Th3R]

what else u expecting from your friendly FedEx deliveryperson

[Gradenko]

G0DF4Th3R, not much else, just a set of forged rods. Tomorrow hopefully .

[fane]

horny deliveries!! gl with the rebuild dood i'll be watch closely on the results...

[Gradenko]

And here are the rods. The rods each weigh in at 688g +/- 1g. It'll be interesting to see how the weight of the stock rb30 rods, stock rb25 rods and these forged rods compare.

You can just make out the ARP bolts in one of the pics. Those are near $200 for 12 if bought individually, so a useful saving when the rods come packed with them .

[IMACUL8]

excuse the stupid question - but how come theres 8

[Gradenko]

Did I say RB30DET build? I meant VH45DETT...

Damn, still a few hours too early for April fools jokes, innit

Its cause they're rods for a 350 Chev. They are 6" and also happen to fit RB30s with a small modification. I bought them new in the box from a fellow who was building a Chev engine and presumably changed his rebuild plans. Even though I'll only be using 6, they were at a price too good to pass up.

[IMACUL8]

cool - just thoiught I was missing something

[matlowth]

Gradenko - out of interest - how much work is there involved to fit the chev rods? And if you don't mind me asking - what did ya pay for 'em?

Cheers,

matt

[Gradenko]

matlowth, I am told they will fit rb30 motors using 40thou bearing machined down to suit the rb30 crank.

From what my engine builder tells me, only certain Chev rods are suited for this appiication. The big end is too wide (>86mm) to fit in the RB30's bore, so small amount of meat has to be machined away from around the rod bolts. On some rods this wouldn't leave enough metal for the bolts to hook into, on others its fine.

These rods are made from 4340 steel, magnafluxed, sonic tested, x-rayed, heat treated, stress relieved, have bronze bushings and were $500 for the set. Compared to $800 to shot peen and ARP rob bolt my factory rods, I thought these new rods were a slightly better deal.