R1 STRIKER
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| posted on 6/6/07 at 09:35 PM |
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Gear box ratios
Hi guys,
I have been offered a quaife box at sensible money but am not sure the ratios are quite what i'm after. What do you think?
1st-2.04
2nd-1.54
3rd-1.21
4th-1:1
5th-0.87
Running a 4.4 diff and a 20v 4age engine, redline about 8000rpm.
I work that out to 61mph in 1st! Think it might be a tad to much.
Advice needed.
Thanks
Ben.
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CairB
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| posted on 6/6/07 at 10:02 PM |
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I'm running a quaife with
2.2
1.54
1.21
1
0.87
and a 3.92 diff which I believe is about 63mph at 8k.
It isn't much of a problem unless you get bogged in crawling traffic as long as your engine has good low down torque.
The whine can become a bit anoying but you can always slot it in 4rth for a bit of p&q.
Cheers,
Colin
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R1 STRIKER
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| posted on 6/6/07 at 10:18 PM |
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20V 4age not known for having the most talk in the world. They are fine at low revs but really come alive above 6000rpm.
Ben.
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ghuncha
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| posted on 7/6/07 at 03:19 AM |
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well my planned setup is almost the same too, instead of quaife i have thought of t50....
yeas true that 20v is not renowned for low down torque, but it ain't that bad too... i have driven an AE-101 with 20v st swap and have used 5th
gear as low as 2k rpm.... and with the low weight of our desired car i think it should be just fine...
thanks
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bimbleuk
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| posted on 7/6/07 at 08:58 AM |
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The 4AGE 20V may not have a particularly high peak torque but it is very flat and there's plenty of bottom end for trickling along in
traffic.
I've got a 4.4:1 diff and a BGH E7 GBX and 1st is basically too short so I use 2nd most of the time.
I had a quick play with wheel/tire sizing and your ratios and 185x60 13 inch wheels look to be a good combo with that GBX.
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andylancaster3000
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| posted on 7/6/07 at 10:34 AM |
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So to hijack this thread a bit. I suppose the question may help others though!
Bimbluk: With a 4.4diff and that gearbox what are the revs at 60 or 70 mph in top? What are the ratios of first and fifth on that box?
Cheers,
Andy
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R1 STRIKER
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| posted on 7/6/07 at 01:10 PM |
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Yes, That's what I thought justin. Only problem is my wheels are 195/50/15 and they are a nice new set of OZ chrono HT's so I don't
want to change them. Might just give it a go. Can always sell it again.
Ben.
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