evo.rocks
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| posted on 4/1/10 at 10:59 AM |
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ZX9r vs R1 vs ZX12r Kit Cars
How much difference is there between a ZX9r and R1 kit car in acceleration up to 100mph???
Is there a huge difference in the 2 engines??
And then again, is there much difference between the ZX9r and the ZX12r in acceleration up to 100mph??
The reason i ask is, i want to no is there much point in me changing my ZX9 engine to a R1 or ZX12.
It is never tracked and only driven round the rounds...
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eznfrank
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| posted on 4/1/10 at 11:42 AM |
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The main difference will be passenger rides or if you're a "large" chap. If most of the time it's just you then you probably
won't notice much of a difference.
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sorens2
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| posted on 4/1/10 at 12:38 PM |
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I think my ZX12 is quite a bit faster that the R1 i tried.
More torque overall.
And the difference from a 9 must be even bigger.
I would never change to a R1.
Soren S2
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smart51
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| posted on 4/1/10 at 01:02 PM |
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depends on the age of the engine. there's about 30 BHP difference between early and late R1s (that's about 20%).
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russbost
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| posted on 4/1/10 at 01:21 PM |
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There won't be a huge difference in absolute performance, particularly between the Zx9 & the R1.
As has already been said will be more noticeable the heavier the car & the more weight in it.
The Zx9 will be slowest & theZx12 quickest with the R1 in the middle.
I think the biggest difference you'll find is that with the ZX12 because it has more torque it's a lot more forgiving & unless
you're trying to wring the last ounce of performance out of it you don't need to redline it all the time. You'll find the power
delivery is more solid & consistant
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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A1
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| posted on 4/1/10 at 02:49 PM |
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why would you never change to r1 sorens?
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Peteff
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| posted on 4/1/10 at 05:40 PM |
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quote:
Originally posted by A1
why would you never change to r1 sorens?
Because he has a ZX12 ?
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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daniel mason
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| posted on 4/1/10 at 07:01 PM |
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what diff do you use?
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Hellfire
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| posted on 4/1/10 at 07:52 PM |
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In terms of acceleration, 100mph would take approximately quarter of a mile to achieve. By way of comparison, the quarter mile times that we've
seen with all three BEC's in attendance on the same day at a drag event are as follows;
ZX12R - 12.523 secs
ZX9R - 13.128 secs
R1 - 13.557 secs
The ZX9R was fitted with a flatshifter though, so would have been quicker through the gears than the other two.
The most noticeable difference with the ZX12R is the low down torque and general driveability with/without passenger.
I reckon your money would be better spent on a few modifications such as lightweight parts and possibly a flatshifter rather than an engine swap.
Phil
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sorens2
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| posted on 4/1/10 at 08:58 PM |
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My diff is 3.38
My 1/4 mile is 12.4 sec without flatshift.
And I would never go down in power.
So no R1 for me.
But the R1 is a very good engine for the locoster.
Soren S2
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afj
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| posted on 6/1/10 at 09:58 PM |
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me and ed have errr 'raced ' from 0-120mph ish he has indy r zx12r and me in the indy r1 and he ends up around 10 - 15 meters
ahead at 120ish, he is slowly pulling away all the time after about 80mph
eerrrrrrrrrrrrrrrr
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evo.rocks
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| posted on 6/1/10 at 11:03 PM |
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fair no enough, no point what so ever in changing the zx9r then, its fast enough by the sounds of it. even quicker than the r1 on the quarter mile!!
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matt.c
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| posted on 7/1/10 at 09:48 PM |
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My zx9 powered indy kept up with a few bigger engined cars. 
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evo.rocks
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| posted on 3/2/10 at 09:22 PM |
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yep, i raced my mates r1 engined westfield the other day on private land and i beat him over about quarter of a mile, funny that the zx9 engine can be
quicker than the r1
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eddie99
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| posted on 3/2/10 at 11:41 PM |
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Sorry to change thread a bit, but how much difference is the blackbird engine to these?
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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Hellfire
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| posted on 4/2/10 at 07:53 PM |
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Figures for the Blackbird engine would be very similar.
Phil
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StevieB
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| posted on 4/2/10 at 10:46 PM |
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The problem is the age of the engines - take a fireblade for instance.
Early blade are about 125bhp (you can just about get that from a 600 these days), where the current models are pushing close to 180-190 bhp and are
also lighter and more compact.
Ditto for the R1 - the later models are putting out 180bhp and that's before it gets a power commander and a freer flowing exhaust.
Ultimately, I think the way to address which bike engine to have revolves around getting the newest motor you can afford and forget about where it
came from. The difference will be so minor that a slight driving error will make the difference.
And the most importantly, none of them will be a car engine, which can only be a good thing 
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franky
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| posted on 5/2/10 at 12:18 AM |
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I wouldn't get a newer R1 engine on as from 2008 onwards they are about 20bhp down on other makes. Anyone who says they make more torque
don't really understand how the engine was designed as it doesn't.... the firing order is suppose to reduce stress on bike rubber. This
feeling might increase the feel of torque on a bike but in a car it'll just feel more gutless.
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