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GTR crank n rods into GTST

sweetr33

By sweetr33,
in Engines & Forced Induction

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Posted
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Rb30's need a few small modifications first eg needs oil lines tapped into the block for the turbo, I'm also not sure how strong the crank would be on an rb30 to handle 300rkw.

Machining costs mite be expensive as their is more work needed.

I'm current getting my Rb25det machined with arias forged pistons, rb26 rods and keeping the crank standard. Its costing me heaps, buy the time you but all parts and put it all back in, it becomes a motor reliable motor, and should have no probs handling the power out put your after, If tuned well. But if you have the money to put an rb30 bottom end in I would recommend it as their are good benefits. But to make the motor reliable and strong you would have to spend a lots more all round to make that happen.

Cubes Grand Master

Cubes

Posted
Posted
Rb30's need a few small modifications first eg needs oil lines tapped into the block for the turbo, I'm also not sure how strong the crank would be on an rb30 to handle 300rkw.

Machining costs mite be expensive as their is more work needed.

That depends what RB30 block you get. SII block has all the provisions for the turbo.

Apart from that the only other modifications required depends on what cam belt you use.

Cubes Grand Master

Cubes

Posted
Posted

Its a little off topic but just to compare how tough the RB rods are:

Here's a little snip from a bloke i'm exchanging pvt messages with.

He's got a RB26 with a GT40 thats almost done.

My brothers is running 300rwkw at the moment and is only using stock rods, and I'm pretty sure it would be able to handle 350rwkw, just excessive revs may decrease their life span dramatically.

Hopefully we will be aiming for near 400 so we will be able to work out what is going to go first in a standard (although brand new and balanced) bottom end.

Generally most workshops will start upgrading the rods once they near 400rwkw. Although PSI03L has been running shotpeened standards for a while (nearly 2 years) and that has been running in excess of 500rwhp.

Hopefully my rods handle 300rwkw maybe just a little more with no problems. :(

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