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its been covered many times before, people trying to obtain stupid figures from the rb20 or similar variants. speak to a mechanic and get a price on your engine ideas, see how much its going to cost (and survive relibably). instead of the 26 you may want to look into the rb30 with the twin cam conversion as an alternative

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Well ATM im straping on a T3/T4 Hybrid just to try and get a little better responce so that will be on for a little while Im not going for big power figures never was not interested in high HP or I would have just brought a GTR or a RX7.

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about the closest to that rpm would be a counterweight billet crank like JUN/HKS which rate upto 13 000rpm with other associated parts (note: f**kin pricey $$$)

a revving engine is a total different thing to drive to a large capacity engine. personally i like revs heaps more, and the way the tacho goes from 4000rpm str8 to 8000rpm or whatever as soon as it hits boost is the best feeling.

slow revving might pull harder but they feel sluggish and deisel like, hehe, even my old mans 5L VN group A SS with vortech supercharger feels slow becuase the power is too linear. but each to their own :P

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Perhaps you could get your tach recalibrated? This would be the cheapest way to get there (just keep quiet no one will know, they will be real impressed! ). Seriously though that is a pointless thing to do, if you even got the engine to stay together you would need massive head flow numbers you would have no low down torque the cars gearing would be wrong Blah

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  • 3 weeks later...

Not a silly question about a high revving RB20.

Our goal is to cram 10,000 RPM out of these engines for drag racing purposes. The ten second barrier and beyond.

I really dont think it's that too hard a deal considering the strength of the bottom end internals.

Cylinder head max flow numbers may restrict you though. (not sure about this yet)

Their is a few threads on this, you may want to do a search.

Good luck.

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