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Author IS there any difference in gear box...
Rhino
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Registered: 18th Oct 03
Location: Falkirk
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15th Oct 04 at 22:14   View User's Profile U2U Member Reply With Quote

From a 1.4 sport and a 1.6 sport?

Would there be any advantage in swaping my gearbox in my 1.6 to the on i got sitting in my garage on the 14??
scott b
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Registered: 23rd May 04
Location: Woolston, Drives: Combo C
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15th Oct 04 at 22:29   View User's Profile U2U Member Reply With Quote

the ratios might be different, usally the samaller engined car gearbox will have shorter ratios so if you put a 1.4 box ona 1.6 engine it would have quicker aceleration but a lower top speed
Cybermonkey
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Registered: 22nd Sep 02
Location: Sydney, Australia
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15th Oct 04 at 22:37   View User's Profile U2U Member Reply With Quote

The 1.4 is an F13CR box, and the 1.6 is the F15CR. Nearly identical except for minor ratio change in 2nd, and different final drive. All other gears share the same ratio. Oh and the F15 will take more torque than the F13.
broster
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Registered: 6th Dec 02
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15th Oct 04 at 22:39   View Garage View User's Profile U2U Member Reply With Quote

or as soem will agree some 1.4's had the f15cr box as mine did!
Cybermonkey
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15th Oct 04 at 22:59   View User's Profile U2U Member Reply With Quote

broster i need visual evidence to believe you.
broster
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15th Oct 04 at 23:22   View Garage View User's Profile U2U Member Reply With Quote

i feel you may be supplies with some later when the moon has gone
ainsley_brader
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Registered: 24th Mar 02
Location: Tattershall, Lincolnshire
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16th Oct 04 at 15:05   View User's Profile U2U Member Reply With Quote

I fiited a c16xe into my 1.4 utilising the F15 that was originally in the car. Did think about taking it out and dropping the F15 of the 1.6 but cant be bothered it runs well and fuel economy is marginally better so im happy.

Can we have evidence of an F13 on a 1.4 16v all the ones ive ever seen have had F15s???
bubble
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Registered: 24th Jan 04
Location: Darwin, NT Australia.
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16th Oct 04 at 15:36   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by ainsley_brader
I fiited a c16xe into my 1.4 utilising the F15 that was originally in the car. Did think about taking it out and dropping the F15 of the 1.6 but cant be bothered it runs well and fuel economy is marginally better so im happy.

Can we have evidence of an F13 on a 1.4 16v all the ones ive ever seen have had F15s???


last clutch i saw apart came from a f13 in a r-reg 1.4
Cybermonkey
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Registered: 22nd Sep 02
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17th Oct 04 at 06:41   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by ainsley_brader
I fiited a c16xe into my 1.4 utilising the F15 that was originally in the car. Did think about taking it out and dropping the F15 of the 1.6 but cant be bothered it runs well and fuel economy is marginally better so im happy.

Can we have evidence of an F13 on a 1.4 16v all the ones ive ever seen have had F15s???


Look in a haynes manual
ainsley_brader
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Registered: 24th Mar 02
Location: Tattershall, Lincolnshire
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17th Oct 04 at 10:53   View User's Profile U2U Member Reply With Quote

Because haynes is god
Rhino
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Registered: 18th Oct 03
Location: Falkirk
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18th Oct 04 at 17:15   View User's Profile U2U Member Reply With Quote

are the flywheels that same also then?

I was also told that the F15 box could be found in some 1.4 16v's last night.

Would there be much point in changing then?
Richie
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Registered: 3rd Dec 02
Location: Newport, Wales
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18th Oct 04 at 20:18   View User's Profile U2U Member Reply With Quote

Broster you well may have had a recon gearbox before you bought the car......
broster
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Registered: 6th Dec 02
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19th Oct 04 at 12:02   View Garage View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Richie
Broster you well may have had a recon gearbox before you bought the car......


highly doubt that
Gambit
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Registered: 5th Jun 00
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19th Oct 04 at 15:05   View User's Profile U2U Member Reply With Quote

u'll find that the F15CR found in later 1.4 will have a different final drive than those found in the 1.6

after all the F13CR & F15CR only differed in the FD.

F13 is a carry over from Nova days hence why its found in early corsa sri's etc, later on vaux used 3 different FD's in the F15CR
Greasemonkey
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Registered: 17th Apr 02
Location: Drives a Tractor
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19th Oct 04 at 15:09   View User's Profile U2U Member Reply With Quote

So if ya stuck a F15CR from a 1.4 16V that has a different FD onto a 1.6 what would be the out come, top speeds etc
Gambit
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19th Oct 04 at 15:13   View User's Profile U2U Member Reply With Quote

you would lose top end but you'd see a slight increase acceleration

im assuming the 1.4 has the 3.94 FD and the 1.6 the 3.74FD

so comparing the 2 FD's in a 1.6, in 5th at 6krpm

the 3.94FD = 115mph
the 3.74FD = 121mph

[Edited on 19-10-2004 by Gambit]
Greasemonkey
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Registered: 17th Apr 02
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19th Oct 04 at 15:23   View User's Profile U2U Member Reply With Quote

Brosters corsa does 130mph and he is using his F15 on his 1.6 from the 1.4 i belive. i had a 1.6 with 1.6 F15 and i couldnt keep up
Gambit
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19th Oct 04 at 15:26   View User's Profile U2U Member Reply With Quote

for broster to be doing an actual 130mph he'd need to be hitting 6750rpm in 5th

this assumes he's running 195/50r15 tyres. if they are bigger then the rpm will drop v.slightly to say 6.5k if he was running 17's
Greasemonkey
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Registered: 17th Apr 02
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19th Oct 04 at 15:45   View User's Profile U2U Member Reply With Quote

He can get the car to 7200RPM in 5th has 15's with 195/45/15 tyres
Most i could get was about 6500RPM with 17's 205/40/17's

[Edited on 19-10-2004 by Greasemonkey]
Gambit
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19th Oct 04 at 15:54   View User's Profile U2U Member Reply With Quote

well his topend would be 133mph, your should be 136mph

but then the calculation thing i use doesnt take into account wheel weight.

ur's will be slower as its using more effort to turn a heavier wheel

on 195/45r15's @ 6.5krpm yours would be hitting 125mph

it can get pretty complicated. when you start comparing different gearboxes on different cars that have different wheels, there is a whole pile of extra factors to take into account
broster
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Registered: 6th Dec 02
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19th Oct 04 at 17:56   View Garage View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Gambit
well his topend would be 133mph, your should be 136mph

but then the calculation thing i use doesnt take into account wheel weight.

ur's will be slower as its using more effort to turn a heavier wheel

on 195/45r15's @ 6.5krpm yours would be hitting 125mph

it can get pretty complicated. when you start comparing different gearboxes on different cars that have different wheels, there is a whole pile of extra factors to take into account


thats pretty accurate, my speedo seems to be spot on, my mates in his ka on the other hand reads 10mph above me at the same speed

 
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