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Author Gearbox question.Need your opinion;)
Lazarus1
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Registered: 5th Apr 02
Location: Skopje,Macedonia
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27th Feb 05 at 18:19   View User's Profile U2U Member Reply With Quote

Ok lads,my friend has an Opel Astra Gsi(1.8l 16v 125Bhp) with a factory F18 gearbox.He has recently put a C20XE of an Opel Cadett and was woundering if he should get the F20 gearbox of the Cadett aswell...So can you tell me the advantiges/dissadvantiges of the two.Wich is better overall.Thank you.
Lazarus1
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Registered: 5th Apr 02
Location: Skopje,Macedonia
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27th Feb 05 at 20:10   View User's Profile U2U Member Reply With Quote

Can you help me out guys,i need your input.cheers.
Ian
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Registered: 28th Aug 99
Location: Liverpool
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27th Feb 05 at 20:38   View Garage View User's Profile U2U Member Reply With Quote

Not sure if F18 will even go on C20XE? You might not have the choice.


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Lazarus1
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Registered: 5th Apr 02
Location: Skopje,Macedonia
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27th Feb 05 at 20:49   View User's Profile U2U Member Reply With Quote

But, i hope my friend knows what's he talking about cause the car is running,he drove me around town in the car today,the c20xe is in and he's pretty shure that the 1.8l astra came with a factory f18 gearbox.
Any thoughts?
Lazarus1
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Registered: 5th Apr 02
Location: Skopje,Macedonia
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27th Feb 05 at 21:37   View User's Profile U2U Member Reply With Quote

Ok,let me make it simple.
An opel astra gsi(1.8l 16v 125Bhp)now has a C20XE in the bay.The car is still running the factory gearbox.Is it a f18 or f20?If it is a f18 is it better to have the f20?Explain please
Lazarus1
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Registered: 5th Apr 02
Location: Skopje,Macedonia
User status: Offline
28th Feb 05 at 20:43   View User's Profile U2U Member Reply With Quote

tt
Ian
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Registered: 28th Aug 99
Location: Liverpool
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28th Feb 05 at 20:50   View Garage View User's Profile U2U Member Reply With Quote

You sure the factory box is F18?

Like I say, I've never heard these two compared. Normally the choice is F16 from early Calibra and F20 from most others.

F20 is rated at 200ft/lb torque
F16 at 160ft/lb

F18 will be 180?

Still enough even though its not as strong as F20.

The ratios are also not just decided by gearbox F number, you can get different ratios within one model of box.

Even if they are different ratios then there is still no 'better' box, one may offer closer ratio and better acceleration, but it will offer worse top speed and will be worse on fuel on the motorway.


Corsa B lap belts required
Lazarus1
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Registered: 5th Apr 02
Location: Skopje,Macedonia
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28th Feb 05 at 20:57   View User's Profile U2U Member Reply With Quote

thats the thing i'm not sure...he's not sure either,but your explanation helped me out to clear the issue.Thank you Ian.
ainsley_brader
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Registered: 24th Mar 02
Location: Tattershall, Lincolnshire
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28th Feb 05 at 21:45   View User's Profile U2U Member Reply With Quote

f18 is the new big block box and they are crap. I would go for the f20!
Cybermonkey
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Registered: 22nd Sep 02
Location: Sydney, Australia
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28th Feb 05 at 21:50   View User's Profile U2U Member Reply With Quote

yeah the F18 is a big block gearbox, and wont mate to the 20XE, so your friend has either an F16 or F20. he must have the Cesaro model Ian
and-m
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Registered: 5th May 02
Location: Liverpool. Drives. Skud vRS.
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1st Mar 05 at 01:12   View User's Profile U2U Member Reply With Quote

Untrue, I run an F18 box on my XE.
Lazarus1
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Registered: 5th Apr 02
Location: Skopje,Macedonia
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1st Mar 05 at 02:22   View User's Profile U2U Member Reply With Quote

and-m,if that is true in your opinion and others opinion is welcome,what do you think would be better overall for my mates Astra,the f18 or the f20,is it a big deal,does it make much of a difference?thank you guys.
X 60RSA
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Registered: 20th Aug 01
Location: Lincoln
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1st Mar 05 at 02:50   View User's Profile U2U Member Reply With Quote

I love my F20 in 2nd 3rd and 4th, mainly 3rd and 4th, pull shite hot!
mav
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Registered: 19th Jun 01
Location: Scotland
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1st Mar 05 at 07:02   View User's Profile U2U Member Reply With Quote

yep my F20 is wouldn't change it..........
and-m
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Registered: 5th May 02
Location: Liverpool. Drives. Skud vRS.
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1st Mar 05 at 12:55   View User's Profile U2U Member Reply With Quote

Any will be fine

 
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