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Gearing for turbo use


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I run 17/40 i think (could be 16) 

Mine makes loads of mid range torque and pulls really well from low revs, i find having tall gearing lets you use the power without it being a complete pogo stick and helps keep turbo loaded up

3rd is good for 30mph up to 175mph so not much gear changing needed.

1st and second are entirely pointless gears really.

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28 minutes ago, clivegto said:

17 won't fit. Am running 16/43 on the road still loads the Turbo & fast.

Someone better tell the two turbo GSXR's that I've built, both with 17's - the Kawazuki was 17/45 @ 210hp and the 1460 has 17/42 @ a lot more! Tried an 18 from a Busa - no way, all with 530 / 532 chain

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2 hours ago, Reinhoud said:

I've been experimenting with gear ratio's on non turbo bikes, but with power gains up to about 60%, I prefered the stock ratio every time. With my GS1000 Turbo I did not feel te need to change the ratio.

 

Fair point, depends on what sort of power gains your talking about, mines about 200% power and torque gain.

For what I do all gears apart from 5th are useless so ive geared it so 3rd is virtually the same as stock 5th which gives me 3 useful gears instead of 1.

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