mattpilmoor
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| posted on 20/1/05 at 03:52 PM |
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live axle BEC Diff ratio
What's the best live axle/ diff combination to go for. I'd like my diff ratio to be as low as possible (3.4:1 - 3:1). I'm not sure
what range of ratios are available in the cortinas/capris.
Any help appreciated.
Cheers
Matt
Measure twice - Cut once - Still f*!K it up!
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stevebubs
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| posted on 20/1/05 at 03:53 PM |
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You should be able to get a Capri axle with a ratio around 3.3:1
Escort lowest ratio is 3.54:1
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Peteff
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| posted on 20/1/05 at 05:40 PM |
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I think the tag on my Capri axle was 3.44:1. It disapperared while I was cleaning it up though.
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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Jon Ison
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| posted on 20/1/05 at 06:13 PM |
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i ran 3.89 on a blade, 15" wheels.
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ChrisGamlin
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| posted on 20/1/05 at 10:09 PM |
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As others said, 3.54 is the highest you'll get in an English (Escort Mk2) axle. This is fine I would say, with a blade it gives you around
125mph top end with 185/60 13 tyres which is plenty even for 95% of track use. The only time youd want higher gearing is for long journeys on the
motorway or if you are fitting a ZX9 which is a fair bit lower geared.
Personally I think the Capri axle is a bit big and heavy for a BEC, and its wider too so may cause issues if you're building to book
Chris
[Edited on 20/1/05 by ChrisGamlin]
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mattpilmoor
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| posted on 21/1/05 at 02:10 PM |
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Cheers guys.
Measure twice - Cut once - Still f*!K it up!
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Bob C
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| posted on 21/1/05 at 03:52 PM |
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with a 3.14:1 diff on an R1 engine I'm geared for about 64 in 1st, 150 odd top.
The high 1st will make crawling in traffic a pain & limits 1st gear acceleration to ~0.8g, but I figure that should reduce wheelspin & give
~7krev cruise at motorway speed.
Bob
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