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Author F17 v's F13 gear and final drive ratios
DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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1st Apr 09 at 10:37   View User's Profile U2U Member Reply With Quote

Currently I'm topping out at 120mph on the limiter (on a private track of course), which is some what annoying.. Does anyone know the ratio differences between the F13 and F17 regarding the final drive and 5th gear...

I'd like to swap out 5th in my F13 for 5th in the F17 I've got spare but if its the final drive that makes all the difference I wont bother.

Annoyingly I cant use the F17 box or final drive as it doesnt have a speedo drive in it unless of course they are transferrable?
wilson_sri
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Registered: 31st Aug 04
Location: Dunfermline Drives: Technics 1210s
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1st Apr 09 at 10:45   View User's Profile U2U Member Reply With Quote

You need NOS.
DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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1st Apr 09 at 10:47   View User's Profile U2U Member Reply With Quote

How is NOS going to over come the fact I've run out of gears? lol.
Mobby
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Registered: 31st Dec 07
Location: Leicestershire
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1st Apr 09 at 10:49   View User's Profile U2U Member Reply With Quote

id like to know this too.
richc
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Registered: 24th Mar 07
Location: Ilkeston
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1st Apr 09 at 11:06   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by DaveyLC
How is NOS going to over come the fact I've run out of gears? lol.


Blow up quicker

The f17 are quiet abit longer if memory serves me correct, i just cant remeber the actual ratio
Dan Lewis
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Registered: 31st Jan 05
Location: Leicestershire
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1st Apr 09 at 11:15   View User's Profile U2U Member Reply With Quote

when are you realistically going to be doing 120+ though?
richc
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Registered: 24th Mar 07
Location: Ilkeston
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1st Apr 09 at 11:16   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Dan Lewis
when are you realistically going to be doing 120+ though?


Its not the just that though. Long ratio, better on the motorway
DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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1st Apr 09 at 11:17   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Dan Lewis
when are you realistically going to be doing 120+ though?


I'm spending my life in 5th on the road..
Benkid
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Registered: 16th Mar 09
Location: Wokingham
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1st Apr 09 at 16:21   View User's Profile U2U Member Reply With Quote

Where on earth did you get that awesome idea ha ha
DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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1st Apr 09 at 16:26   View User's Profile U2U Member Reply With Quote

Some crazy old wizard told me!
Ben G
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Registered: 12th Jan 07
Location: Essex
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1st Apr 09 at 16:29   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Dan Lewis
when are you realistically going to be doing 120+ though?


when little chavs in 1.4/1.6 fiestas and corsas are up his arse thinking it's just a 1.2
spikedjack
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Registered: 16th Oct 08
Location: wolverhampton/cannock
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1st Apr 09 at 16:30   View User's Profile U2U Member Reply With Quote

5th gear in my f17cr with a limiter at 7250 is well off the clock if that helps
alan-g-w
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Registered: 9th Nov 07
Location: Glasgow
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1st Apr 09 at 16:34   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Dan Lewis
when are you realistically going to be doing 120+ though?


It's not just that though. If you're going 120 at (for example) 6500rpm on the limiter then to be going 70 you'd (ballpark figure) be at about 4000rpm.

If you get a longer final drive, it'll require less revs to be doing the same speed, which would give better economy along with a more 'comfortable' drive.

[Edited on 01-04-2009 by alan-g-w]
DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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1st Apr 09 at 20:09   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by spikedjack
5th gear in my f17cr with a limiter at 7250 is well off the clock if that helps


Do you know the final drive ratio on the F17? My 1st 2nd 3rd ratios are spot on! I'd just like a longer 5th and possibly 4th but if its the final drive that makes the main difference it will obviously be a waste of time changing the gearing
spikedjack
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Registered: 16th Oct 08
Location: wolverhampton/cannock
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1st Apr 09 at 20:10   View User's Profile U2U Member Reply With Quote

i dont unfortuneately mate, warren should be able to tell you,

i know the speeds in all all gears on the f17cr if that helps?
DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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1st Apr 09 at 20:13   View User's Profile U2U Member Reply With Quote

i suppose I should find out what the final drive ratio is on both boxes
Mobby
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Registered: 31st Dec 07
Location: Leicestershire
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1st Apr 09 at 21:21   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by DaveyLC
quote:
Originally posted by spikedjack
5th gear in my f17cr with a limiter at 7250 is well off the clock if that helps


Do you know the final drive ratio on the F17? My 1st 2nd 3rd ratios are spot on! I'd just like a longer 5th and possibly 4th but if its the final drive that makes the main difference it will obviously be a waste of time changing the gearing

wont the little difference affect anything?
Warren G
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Registered: 14th May 06
Location: Kent
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1st Apr 09 at 21:28   View User's Profile U2U Member Reply With Quote

look on TIS davely

il look in the morning if i wake up in time!!
DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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1st Apr 09 at 21:31   View User's Profile U2U Member Reply With Quote

Havent got it installed on my new laptop.. it dont have a CD drive
Warren G
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Registered: 14th May 06
Location: Kent
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1st Apr 09 at 21:37   View User's Profile U2U Member Reply With Quote

fine. il do it
DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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1st Apr 09 at 21:41   View User's Profile U2U Member Reply With Quote

Thankyou uncle warren! lol
Warren G
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Registered: 14th May 06
Location: Kent
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1st Apr 09 at 21:46   View User's Profile U2U Member Reply With Quote

corsa c - F13 + F17 are same ratios CR

1 - 3.73
2 - 1.96
3 - 1.30
4 - 0.95
5 - 0.76
R - 3.31

F13/15 CR

1 - 3.55
2 - 2,14
3 - 1.41
4 - 1.12
5 - 0.89
R - 3.31

F13 pre 97 had 3rd - 1.43

so longer gears

but tops out at 120? my 1.4 used to pull to limiter at a reading of 128mph
Warren G
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Registered: 14th May 06
Location: Kent
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1st Apr 09 at 21:47   View User's Profile U2U Member Reply With Quote

so just fit the drive train and diff into the F13 or remove the hydrulic clutch fit cable leaver, and remove speedo blanking plate, im sure you can fit a speedo sensor
RioVerde
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Registered: 23rd Apr 06
Location: Spondon, Derby
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1st Apr 09 at 21:49   View User's Profile U2U Member Reply With Quote

Corsa sports are shit for that mine revs at 3500 rpm at 70,makes them not very economical at motorway speed
DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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1st Apr 09 at 21:50   View User's Profile U2U Member Reply With Quote

The drive for the speedo is missing on the diff in the F17 arse

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