Kev S
Member
Registered: 7th Dec 09
Location: aberystwyth, wales
User status: Offline
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Hi I'm new to the vauxhall scene and have no idea what gearboxes etc would fit and work well on my car. I've recently braught a corsa sport 1.6 and my plan is to set it up as a rally car so ideally i want something with a pretty close ratio but i dont want to fork out for a specialist built one. So I'm hoping someone on here can help me out..... would a gearbox off say a corsa merit 4 speed fit my car? which other boxes would fit and what are they off? Also which would be a good strong uprated clutch to get and what kind of price would i be lookin at as a full clutch kit? thanks for the help
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stan_the_man
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Registered: 14th Feb 07
Location: Perth, Western Australia
User status: Offline
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As far as i know, your Corsa will have an F15CR, which to be honest is a pretty good 'box. You could try sourcing a higher final drive which would reduce top end, but gain lots of acceleration.
Also an F13CR would do a similar job unless i am mistaken . . .
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Tiger
Member
Registered: 12th Jun 01
Location: Leicestershire Drives:Astra VXR
User status: Offline
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The box from a Corsa Merit 4 Speed would be far from close ratio, and the final drive would be long too.
An F13CR box will give you the following, at a 6000rpm limiter with 195/45/16 tyres:
Speed @ Limit 1st 29.41 Mph
Speed @ Limit 2nd 48.78 Mph
Speed @ Limit 3rd 73 Mph
Speed @ Limit 4th 93.21 Mph
Speed @ Limit 5th 117.3 Mph
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Tiger
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Registered: 12th Jun 01
Location: Leicestershire Drives:Astra VXR
User status: Offline
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Here's a calculator for your gearings:
http://www.slindborg.host.sk/gears/index.php
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ianofbhills
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Registered: 10th Feb 01
Location: newcastle
User status: Offline
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Keep the box you have but change the final drive to a 4.53 crown wheel and pinion.
This will keep the revs up higher and allow your car to accelerate faster but as a trade off reduce your top end speed and fuel economy Perfect for a rally car.
here but you can get used ones cheaper
http://www.chrisastleymotorsport.com/product_info.php?products_id=68
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ianofbhills
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Registered: 10th Feb 01
Location: newcastle
User status: Offline
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f13cr and f15cr have the same gear ratios. I believe the fd out of a diesel box f13wr is 4.18 if your on a budget and can find one that would be ideal. This wont have such a drastic effect on your top speed as the 4.53 and wont be as expensive.
[Edited on 23-12-2009 by ianofbhills]
[Edited on 23-12-2009 by ianofbhills]
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ianofbhills
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Registered: 10th Feb 01
Location: newcastle
User status: Offline
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this might help
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Kev S
Member
Registered: 7th Dec 09
Location: aberystwyth, wales
User status: Offline
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ohh right thanks for the help. so the best bet for me would be to keep the standard box and try and source out a deisel final drive. anyone one here done this? if so what kind of speeds are you hitting in each gear? notice a big difference on acceleration? just curious... would the deisel final drive work in a 4 speed box? or would that just be a stupid plan? cheers
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wakey1512
Member
Registered: 8th Apr 09
Location: Grimsby
User status: Offline
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how come in the above picture the x14xe uses 3 gearboxes? or am i reading it wrongly?
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