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2096 Posts Member #: 1111 Post Whore s wales |
21st May, 2008 at 08:51:37pm
what is an ideal final drive ratio to use on a fast road turbo engine? will be running 110-120 bhp hopefully at 7 psi of boost. use the car for road, including a fair few motorway trips.
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 9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
21st May, 2008 at 09:07:38pm
What wheels are you using? although it only makes a small difference. I personally am a fan of the 3.1, these can be found in 998s A+ boxes from minis. Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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2096 Posts Member #: 1111 Post Whore s wales |
21st May, 2008 at 09:08:27pm
how about 998 a+ metros? will be running 13s |
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9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
21st May, 2008 at 09:11:16pm
The A+ metro boxes had a lower final drive (can't remember what, it was in a thread the other day). Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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2096 Posts Member #: 1111 Post Whore s wales |
21st May, 2008 at 09:41:38pm
so a lower final drive is better for a turbo engine? or taller? |
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4314 Posts Member #: 700 Formerly British Open Classic The West Country |
21st May, 2008 at 09:59:25pm
http://www.turbominis.co.uk/forums/index.php?p=vt&tid=220993 Isambard Kingdom Brunel said:
Nothing is impossible if you are an Engineer |
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2096 Posts Member #: 1111 Post Whore s wales |
21st May, 2008 at 10:19:44pm
cheers. so im after an a+ mini 1000 diff?? |
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2096 Posts Member #: 1111 Post Whore s wales |
21st May, 2008 at 10:53:57pm
how many teeth does each gear have? will this diff enable me to do 100mph plus?thanks |
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 2370 Posts Member #: 719 Post Whore Horndean - Near Portsmouth |
21st May, 2008 at 11:29:21pm
@ 6500rpm and a 3.1 diff with 13" wheels:
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2096 Posts Member #: 1111 Post Whore s wales |
22nd May, 2008 at 12:19:30am
thanks.i already have the minits gearset, i have built the gearbox back up with this. i meant how many teeth does the 3.1 diff have? thanks |
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 9812 Posts Member #: 332 Resident Cylinder Head Modifier Mitsi Evo 7, 911, Cossie. & all the chavs ...... won no problem |
22nd May, 2008 at 12:37:40am
i use a 2.95 on 13s,, and have clocked 142.1 MPH
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2096 Posts Member #: 1111 Post Whore s wales |
22nd May, 2008 at 12:42:02am
cheers. il have to have a look around for one. a pain as iv rebuilt the gearbox, and diff with 4 pin etc in it. have a nearly new 998a+ init in the garage, would be a shame to strip just for the diff. do all 998a+ mini units use the same diff? ta |
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2370 Posts Member #: 719 Post Whore Horndean - Near Portsmouth |
22nd May, 2008 at 01:03:23am
Unless theyve been changed since standard yeah! |
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9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
22nd May, 2008 at 08:05:15am
On 22nd May, 2008 richminiturbo. said:
Unless theyve been changed since standard yeah! Actually the A+ 998 came with two diffs, 3.44 and 3.1, 3.1s are more common in my experience, but some have lots with 3.44s. Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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Site Admin  15302 Posts Member #: 337 Fearless Tom Fenton, Avon Park 2007 & 2008 class D winner & TM legend. |
22nd May, 2008 at 09:08:21am
I'm sure some 998 A+ also came with 2.95:1 diffs in.
On 29th Nov, 2016 madmk1 said:
On 28th Nov, 2016 Rob Gavin said:
I refuse to pay for anything else Like fuel 😂😂 |
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2096 Posts Member #: 1111 Post Whore s wales |
22nd May, 2008 at 11:38:04am
is there a chart anywhere with the number of teeth for each dif ratio gear? if i get one i want to make sure im getting what i want. thanks for your help |
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 8604 Posts Member #: 573 Formerly Axel Podland |
22nd May, 2008 at 11:43:54am
Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
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4314 Posts Member #: 700 Formerly British Open Classic The West Country |
22nd May, 2008 at 09:57:56pm
On 22nd May, 2008 Tom Fenton said:
I'm sure some 998 A+ also came with 2.95:1 diffs in. Yep, the City E had a 2.95:1 diff, apparently the E stood for economy hence the final drive ratio. Isambard Kingdom Brunel said:
Nothing is impossible if you are an Engineer |
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9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
22nd May, 2008 at 10:01:11pm
On 22nd May, 2008 Rob H said:
On 22nd May, 2008 Tom Fenton said:
I'm sure some 998 A+ also came with 2.95:1 diffs in. Yep, the City E had a 2.95:1 diff, apparently the E stood for economy hence the final drive ratio. All my City Es had 3.1s Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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4314 Posts Member #: 700 Formerly British Open Classic The West Country |
22nd May, 2008 at 10:17:10pm
I stand corrected. Isambard Kingdom Brunel said:
Nothing is impossible if you are an Engineer |
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 2500 Posts Member #: 648 Post Whore Northern Ireland (ex AUS) |
22nd May, 2008 at 10:32:35pm
There is an economy model with a 2.95 though, not sure what it is. Isn't there a european model with a 2.7 diff? On 7th Nov, 2008 Nic said:
naeJ m !!!!!!sdrawkcab si gnihtyreve ?droabyekym ot deneppah sah tahw ayhwdd |
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9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
22nd May, 2008 at 10:34:39pm
On 22nd May, 2008 Rob H said:
I stand corrected. I think there is much confusion on the subject, knowing british leyland/Austin they just stuck in the diff that was closest to hand at the time. Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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2096 Posts Member #: 1111 Post Whore s wales |
22nd May, 2008 at 10:53:23pm
so what years aprox would have the 3.1 diff in? i dont want to be lumping an engine and gearbox around, strip it to find its not what im after! thanks |
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9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
22nd May, 2008 at 10:58:27pm
Certinally all the 998s I had from 86 to 90 had 3.1s, with the exception of a racing green that has a 3.44 Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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2096 Posts Member #: 1111 Post Whore s wales |
22nd May, 2008 at 11:07:05pm
iv been offered an '82 998 unit for free, if still avalable. does this have a 3.1? |
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