corsasport.co.uk
  Not logged in [Login - Register]  
You Are Not Registered Or Not Logged In  

Corsa Sport » Message Board » General Chat » Redtop gearbox question


New Topic
New Poll 		  Subscribe | Add to Favourites

You are not logged in and may not post or reply to messages. Please log in or create a new account or mail us about fixing an existing one - register@corsasport.co.uk

There are also many more features available when you are logged in such as private messages, buddy list, location services, post search and more.


Author Redtop gearbox question
Ajones_17
Member
Registered: 20th Jun 02
Location: Sunny Wigan Drives: BLACK 03 VTS
User status: Offline
13th Jan 06 at 15:13   View User's Profile U2U Member Reply With Quote
Right, i aint too well up on gearboxes so wondering what different gearboxes people use for there XE conversions and what is the differences in them, i.e. what is the better one. Think i've heard either F28 or F20 before now as the common ones?
Jambo
Member
Registered: 8th Sep 01
Location: Maidenhead, Drives: VXR Arctic
User status: Offline
13th Jan 06 at 15:20   View User's Profile U2U Member Reply With Quote
Correct.

On an XE an F20 is suited (as used in cav gsi etc) so it was the original intended gearbox. 5speed

F28 more common on the C20LET conversions alltho using an f20 is perfectly acceptable too. F28 has 1 more gear and weighs a bit more, but can withstand 280ilbs of torque whereas f20 manages 200

For an XE an F20 would be fine, can be had cheap (£50) alltho some people use F16? IIRc this is out of a gsi but dont know to much on that one

stuyw
Member
Registered: 15th May 02
Location: North West Drives: Rev3 MR2 Turbo
User status: Offline
13th Jan 06 at 15:21   View User's Profile U2U Member Reply With Quote
the gearbox in the corsa GSi's are F15 as its the smaller block
Rileysport
Member
Registered: 18th Jun 04
Location: West Yorkshire
User status: Offline
13th Jan 06 at 15:22   View User's Profile U2U Member Reply With Quote
I'm using an f16 case with f20 diff, f20 internals with f16 longer final drive confused? i am
Jambo
Member
Registered: 8th Sep 01
Location: Maidenhead, Drives: VXR Arctic
User status: Offline
13th Jan 06 at 15:24   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by SRi-Co
I'm using an f16 case with f20 diff, f20 internals with f16 longer final drive confused? i am


Indeed this is my face
Rileysport
Member
Registered: 18th Jun 04
Location: West Yorkshire
User status: Offline
13th Jan 06 at 15:26   View User's Profile U2U Member Reply With Quote
had a knackered f20 and a dodgy f16 so i blended them
Ajones_17
Member
Registered: 20th Jun 02
Location: Sunny Wigan Drives: BLACK 03 VTS
User status: Offline
13th Jan 06 at 15:27   View User's Profile U2U Member Reply With Quote
I am confused also
So if i fitted the 6 speed box are they better with acceleration/top speed aswell as being able to withstand more power being put through them?
Jambo
Member
Registered: 8th Sep 01
Location: Maidenhead, Drives: VXR Arctic
User status: Offline
13th Jan 06 at 15:29   View User's Profile U2U Member Reply With Quote
the f20 IIRC has closer ratios. And obviously 1 gear less.

The f28 has a much higher top speed capability as F20 tops out at liek 135/9

something like that, IMO waste of time and money putting an f28 on anything other than a c20let or an XE running silly silly power.

Also the cost of an f28 is quite a fair bit more than an f20
Jambo
Member
Registered: 8th Sep 01
Location: Maidenhead, Drives: VXR Arctic
User status: Offline
13th Jan 06 at 15:30   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by SRi-Co
had a knackered f20 and a dodgy f16 so i blended them




So its kind of a basterd/mongrel gearbox then
Ajones_17
Member
Registered: 20th Jun 02
Location: Sunny Wigan Drives: BLACK 03 VTS
User status: Offline
13th Jan 06 at 15:31   View User's Profile U2U Member Reply With Quote
So f20 better accelreation
f28 better top speed?
Rileysport
Member
Registered: 18th Jun 04
Location: West Yorkshire
User status: Offline
13th Jan 06 at 15:37   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Jambo
quote:
Originally posted by SRi-Co
had a knackered f20 and a dodgy f16 so i blended them




So its kind of a basterd/mongrel gearbox then


yeah but not a dog box

f16 has same ratios as f20 with longer final.... not as strong though
corb
Member
Registered: 24th Apr 02
Location: Calgary, Alberta, Canada
User status: Online
13th Jan 06 at 15:42   View User's Profile U2U Member Reply With Quote
I had F20 on my XE, then changed to F16. Preferred the F16, closer ratio's. Had an indicated 120mph in 4th on private road.
Ajones_17
Member
Registered: 20th Jun 02
Location: Sunny Wigan Drives: BLACK 03 VTS
User status: Offline
13th Jan 06 at 15:53   View User's Profile U2U Member Reply With Quote
hmmm, whats best to go for then?
Is F16 the box i got in my sport at the moment?
Rileysport
Member
Registered: 18th Jun 04
Location: West Yorkshire
User status: Offline
13th Jan 06 at 15:58   View User's Profile U2U Member Reply With Quote
f15cr in the sport not useable on a 2.0
Ant
Member
Registered: 12th May 02
Location: Hereford and Worcester
User status: Offline
13th Jan 06 at 16:05   View User's Profile U2U Member Reply With Quote
someone on mig made an f13 fit a 2.0 8v so im sure the f15 could be made to fit but it would be a big waste of time and money!!

I would also rule out an F28 unless your planning big power

Leaves you with choice of f16cr (make sure it is a cr) and f20, the f20 will return better top end an fuel econemy but acceleration will be better with f16cr
stuyw
Member
Registered: 15th May 02
Location: North West Drives: Rev3 MR2 Turbo
User status: Offline
13th Jan 06 at 16:56   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by corb
I had F20 on my XE, then changed to F16. Preferred the F16, closer ratio's. Had an indicated 120mph in 4th on private road.


yeah thats something like what i got in mine as mine is the F16 also
timrud_
Member
Registered: 3rd Jul 04
Location: Sheffield
User status: Offline
13th Jan 06 at 18:04   View User's Profile U2U Member Reply With Quote
Common misconception here!

I'm going to compare an F28 with both F20's. This is with 195/45/16 tyres and at my rev limiter of 7500rpm (though in actual fact the stack shows it revs a little bit further).

F28(3.72) 038 064 095 125 154 186

F20(3.55) 041 067 097 127 162
F20(3.72) 039 064 093 122 154

So it shows that one F20 actuallyhas LONGER gears, and the other is pritty much the same. So F20's don't have better acceleration
Ajones_17
Member
Registered: 20th Jun 02
Location: Sunny Wigan Drives: BLACK 03 VTS
User status: Offline
13th Jan 06 at 19:43   View User's Profile U2U Member Reply With Quote
Thanks tim, interesting hehe
timrud_
Member
Registered: 3rd Jul 04
Location: Sheffield
User status: Offline
13th Jan 06 at 19:48   View User's Profile U2U Member Reply With Quote
No probs! People just assume about F20's and F28's!
Adam_B
Member
Registered: 13th Dec 00
Location: Lancashire
User status: Offline
13th Jan 06 at 19:55   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by stuyw
quote:
Originally posted by corb
I had F20 on my XE, then changed to F16. Preferred the F16, closer ratio's. Had an indicated 120mph in 4th on private road.


yeah thats something like what i got in mine as mine is the F16 also


bollocks, yours has never been over 60
corb
Member
Registered: 24th Apr 02
Location: Calgary, Alberta, Canada
User status: Online
13th Jan 06 at 19:57   View User's Profile U2U Member Reply With Quote

 
New Topic
New Poll

Corsa Sport » Message Board » General Chat » Redtop gearbox question 22 database queries in 0.0149920 seconds