6 speed box
11 August 2002, 02:45 PM
#1
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Location: Leeds - It was 562.4bhp@28psi on Optimax, How much closer to 600 with race fuel and a bigger turbo?
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whats the six speed box like? how much power can it take, also if fitting do i need to change my rear diff (94uk 5dr)
how much would you say an 1800 mile one was worth (subaru say they are £4500)
David
how much would you say an 1800 mile one was worth (subaru say they are £4500)
David
11 August 2002, 08:24 PM
#3
if you can get the rear diff to match it would be best, that way you can be certain the final drive ratio is the same.
you thinking sell it and get an unbreakable gear kit???
paul
you thinking sell it and get an unbreakable gear kit???
paul
11 August 2002, 11:40 PM
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thought about getting unbreakable gears, but Have the chance of a six speed box...
Katana Ill let you know if it comes off..
David
Katana Ill let you know if it comes off..
David
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12 August 2002, 10:49 AM
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thats what i like to hear but is it better for power or is it still risky at 350+ bhp?
13 August 2002, 12:46 AM
#11
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pah... not yet... adaptor plate here I come... ok STI7 engine here I come.
13 August 2002, 04:18 AM
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David, you might want to do a search on I-Club in the transmision section. There were a few threads about this (as an alternative to dog boxes etc). It is possible, but involves quite a few bits (driveshaft, propshaft, rear diff IIRC).
There is even a company marketing this "mod" in the US for a mere 10K UKP
My dealer is considering doing the same thing for his own little "project" car (MY97). He is formal it is possible.
There is even a company marketing this "mod" in the US for a mere 10K UKP
My dealer is considering doing the same thing for his own little "project" car (MY97). He is formal it is possible.
13 August 2002, 04:25 AM
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13 August 2002, 11:52 AM
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Cheers, Looks like Ill see if I can get the clutch and flywheel... Then see if I can get an automatic's prop... And see how I go from there..
David
David
14 August 2002, 12:57 PM
#17
mrt also do a helical (but straighter than standard) gearset with dog engagement, i think they also do an uprated helical set with synchro.
the noise of the unbreakable set comes mostly from the straight cut teeth. I think it's cheaper too.
Also ask Mark A about some alternative gearsets which are less than half the cost of the MRT unbreakable set.
Paul
the noise of the unbreakable set comes mostly from the straight cut teeth. I think it's cheaper too.
Also ask Mark A about some alternative gearsets which are less than half the cost of the MRT unbreakable set.
Paul
14 August 2002, 09:40 PM
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This was posted on i-club by Simon Lines (Prodrive):
It would be interesting to know the amount of modifications needed to fit one of this gearboxes onto a GC8, like if the stock GC8 front cross member will work, and also if it can work with the "old" centre and fron diff .....
Carlos H.
[Edited by carlos_hiraoka - 8/14/2002 9:41:51 PM]
Originally posted by Simon Lines
Hi Guys
As alfriedesq correctly said you don't need a huge list of components (to fit the 6MT in a GC8) it makes good sense to use the 6MT clutch and flywheel (the shifting is simply sublime) Either shorten the shaft of use an auto shaft and change the rear ratio.
The box is a lovely unit, the ratio’s in the UK ones are better for dragging (and road use too – in my opinion) 6th on the UK car is 24.5 mph per 1000 rpm, the RA is 22.4 mph per 1000 rpm. 1 – 4 are identical on all the boxes. There are also different part numbers depending on the type of front and centre diff, two front options, and three centres.
As for the value question, each has to answer that themselves, it’s true that it’s a lot of money but it’s very strong with very good shifting, in a GC8 it will last well even with silly power due to the lighter weight of the car.
Cheers
Simon
Hi Guys
As alfriedesq correctly said you don't need a huge list of components (to fit the 6MT in a GC8) it makes good sense to use the 6MT clutch and flywheel (the shifting is simply sublime) Either shorten the shaft of use an auto shaft and change the rear ratio.
The box is a lovely unit, the ratio’s in the UK ones are better for dragging (and road use too – in my opinion) 6th on the UK car is 24.5 mph per 1000 rpm, the RA is 22.4 mph per 1000 rpm. 1 – 4 are identical on all the boxes. There are also different part numbers depending on the type of front and centre diff, two front options, and three centres.
As for the value question, each has to answer that themselves, it’s true that it’s a lot of money but it’s very strong with very good shifting, in a GC8 it will last well even with silly power due to the lighter weight of the car.
Cheers
Simon
Carlos H.
[Edited by carlos_hiraoka - 8/14/2002 9:41:51 PM]
15 August 2002, 10:26 AM
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surely the front diff is part of the gearbox?? I dont know why I need to replace flywheel... unless starter is different... maybe it will fit.. maybe it wont.. If I get the box it will be going in!
David
David
15 August 2002, 03:58 PM
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how do i do that?? didnt the sti7 have front lsd or was that the jdm sti7?
15 August 2002, 04:13 PM
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dunno.. but I can allways make some driveshafts up by pulling the cv joints apart.. depending on how they are done..
(dont really want to start replacing hubs..)
(dont really want to start replacing hubs..)
15 August 2002, 04:51 PM
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have a look at http://forums.i-club.com/forums/show...ght=6speed+gc8
I was under the impression that there were no differences between track widths on the wagon and saloon, or is this just the my00+
Also can anybody confirm if my front driveshafts would fit as they are... looks like I can keep the clutch I have...
David
I was under the impression that there were no differences between track widths on the wagon and saloon, or is this just the my00+
Also can anybody confirm if my front driveshafts would fit as they are... looks like I can keep the clutch I have...
David
16 August 2002, 11:27 AM
#28
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nah.. i could allways press the other hub into the carrier..
David
David
08 November 2002, 11:53 PM
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yeah but six speed
[Edited by David_Wallis - 2/19/2003 4:04:30 PM]
[Edited by David_Wallis - 2/19/2003 4:04:30 PM]
15 November 2002, 01:31 PM
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The box is physically a lot bigger. I do believe after measuring, that the front shafts wont be a problem with the classic ones being useable with no mods. Just make sure you get the output stubs off the 6spd shafts to put into the diff, to fit your 5spd shafts onto. No reason to use the 6sp flywheel and clutch, but it is quite different to normal imprezas. Starter is in the same position. Mounting cradle also looks to be identical. Gear linkage would be required complete with teh 6sp as it is different to the 5sp.
AFAIK the 6sp is a 3.9 front diff, with a 1:1 transfer, requiring a 3.9 rear diff also.
AFAIK the 6sp is a 3.9 front diff, with a 1:1 transfer, requiring a 3.9 rear diff also.