Yamaha R1 engine in a Caterham

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ChrisG
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They are certainly fine with ACB10s/A048s and a slight overfill on a wet sump, I'd be cautious on slicks but only because nobody has really tried it AFAIK, so would be venturing into unknown territory. To be fair though, if you were considering running a car engine on slicks you'd be almost certainly thinking of dry sumping too. Chris
Irrelevant
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IMO live makes more sense if you're not going to tune a bike engine. Once you do anything to a Busa or even an R1, you're really pushing the standard live setup and will need to beef it up - this is not cheap from what I understand - we're talking 1000's aren't we? Although, I must admit I haven't read up it it too much as I have a DD so it's irrelevant to me. Accumulating bits . . .
Ferrino
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After speaking to some people who have done the Ford axle conversion, it needn't cost too much (unless you're also going to buy an LSD, new disc brakes......). Also depends if you source and recondition the axle yourself, or just get it all sourced and prep'd for you. Another factor is the sale of the Ital axle - which are hard to find. Looks like Ford is the way to go for peace of mind on an R1 - less so for a Blade......
Violet Elizabeth
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You are right about selling the Ital, I had someone putting a request in for mine when I just *mentioned* upgrading to an English
Ferrino
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Seems that other live-axled BECs are using the Ford axle with a 3.54 diff successfully......
Violet Elizabeth
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Wonder what sort of top speed a 3.54 ratio would give ?
Mike Molloy
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A 3.54 diff would give a Blackbird a top end of about 125mph at the 11250rpm rev limit. IIRC this is the setup used by Barry H. Edited by - Mike Molloy on 15 Aug 2004 22:44:22
Violet Elizabeth
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An R1 engine (11000rpm max ?) with a 3.54 ratio on 185/70/13 gives a maximum calculated speed of 128mph in top. Drops to 120mph with 60 profile. My planned GSXR1000 with a 3.27 ratio-ed live axle has a theoretical max of 137mph on my existing 70 profile A021's So thinking about some tyre changes ! Edited by - Noger on 16 Aug 2004 08:55:52
Badger Bill
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Yes, about 120 in 'blade with 3.54 on 185x65x13 a539's. It works out round about 10 mph per 1000rpm, in top. BB
barry.h
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Yes, spot on Mike. In fact 120 mph is a truer figure as 11,250 is somewhat beyond peak power. But it gets there very quickly Barry