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Manual gearboxes 

 

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 Post subject: Manual gearboxes
Posted: Sun Dec 31, 2006 2:14 pm 
Getting Side Ways
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Hey, I'm just wondering what all the different types of T5 are? was, for example, an XF T5 essentially the same gearbox as an EB one? What are the strengths and weaknesses of a T5? Is there a website I can read about T5's, what you can do to strengthen them, what cars they were used in etc? Where can I read similar information about some other gearboxes? Ie; Supra boxes, Single rails, top loaders and the like.

Any info would be appreiciated.

Gab
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Posted: Sun Dec 31, 2006 2:32 pm 
Getting Side Ways
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ea - eb 1 use a t5 but it has lower first gear ratio with a 3 bolt fly wheel. the eb2 - el used the same t5 but had longer first gear ratio along with 6 bolt flywheel.

you can go along the line of fitting a 5 speed supra box, and there are a few others. but you need to buy the custom belhousing from caslte maine rod shop. then you will need a spigot bearing, and thats just to make it all fit.

after this you will more than likley need a custom length tail shaft to suit the box. other problems that you may run into with this type of conversion is a speedo gear.

after doing a few sums it seems as though it would be much cheaper to source a cheap eb2 - el T5 then have it rebuilt to handle the amount of power required for the application. with a relativly stock motor there is no way you will kill a standard T5 gearbox, unless of course you go dumping the clutch at 5grand daily.

to strenthen them they can be rebuilt to T5z spec as per xr6 turbos from the Ba onwards.
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Posted: Sun Dec 31, 2006 2:39 pm 
Getting Side Ways
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Thanks for that, there's no way my motor will kill even a standard high km T5 yet lol, I'm just curios about a few things lol is the EA T5 the same as the XF one? I've got a late `87 XF T5, behind a 250 Crossflow.

Cheers, Gab
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Posted: Sun Dec 31, 2006 5:46 pm 
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as far as i know the EA one has different ratios and im sure it would most likely be a better model then the XF one as it would of had some problems prefected etc, this may be true may not, im currently in the process of installing a EF T5 into my XF
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Posted: Sun Dec 31, 2006 6:34 pm 
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theres quite a few people needing gearbox rebuilds of late
after 12 + years and 200 000+km they really do need looking after.
syncro's start to die :(

 

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Posted: Mon Jan 01, 2007 10:25 am 
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it really depends how you drive it as to how well it will hold up. like i said if u dump the clutch at 5 grand on a gearbox that has 200,000km you have to expect its not going to like it much. if your nice to it then chances are it will be nice back and not die on you.
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Posted: Mon Jan 01, 2007 10:31 pm 
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Yes the EA 5sp is the same as XF. It was called a HD unit for the XF. The 1st gear ratio is 3.50:1. EB on was 3.25:1. This was because of the diff ratio used with T5, mainly 2.92:1. Later they used 3.08:1 diffs with the taller first in the EBs.
The single rail BW, 6cyl was 3.32:1 first gear, the V8 ones had various taller first's.
In the T5, I use a mix of oils, 80/20, ATF/VMX80 and Nulon G70. This gives good gear changes when cold, nice & slick. The VMX 80 with the G70 gives longevity to the oil. Change at 20,000km intervals.

 

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