Yet Another T5 Bites The Dust

[Paradoxx]

What about diff ratios... is it necessary to change this?

[G6ET8U]

What about diff ratios... is it necessary to change this?

I am getting a T56 fitted tomorrow and I am going to keep the stock 3.46 diff in it and see what I think of it...

I know xlnt6 and gogo who have done the conversion as well still retain the stock diff ratio in their cars.

BA Mk2 runs a 3.73 ratio I think... so in time if wanna shorten it up a bit I will go for that.

Jack

[Paradoxx]

Cool, I guess that will give you roughly the same as the 5sp manual feel cos 1st and 2nd are very similar in both

[God666]

With the incorrect diff ratio for the box, are you able to edit the input for the speedo to get the correct speedo reading? I assume it is all done electronically.

[Chris xr6]

With the incorrect diff ratio for the box, are you able to edit the input for the speedo to get the correct speedo reading?  I assume it is all done electronically.

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I thought that the speedo reading came from the abs sensors at the wheels

[God666]

Well it that is the case, that makes life so much easier.

[Chris xr6]

Well it that is the case, that makes life so much easier.

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Thinking about it more the only electrical input in the gearbox is for the reverse lock out solenoid.

[bcl]

Cool, I guess that will give you roughly the same as the 5sp manual feel cos 1st and 2nd are very similar in both

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Here's a comparision table of ratios from my spreadsheet

T5

Gear Ratio Diff Overall

1 2.95 3.46 10.207

2 1.94 3.46 6.7124

3 1.34 3.46 4.6364

4 1.00 3.46 3.46

5 0.73 3.46 2.5258

T-56

Gear Ratio Diff Overall

1 2.66 3.46 9.2036

2 1.78 3.46 6.1588

3 1.30 3.46 4.498

4 1.00 3.46 3.46

5 0.80 3.46 2.768

6 0.62 3.46 2.1452

T-56

GearRatioDiffOverall

1 2.66 3.73 9.9218

2 1.78 3.73 6.6394

3 1.30 3.73 4.849

4 1.00 3.73 3.73

5 0.80 3.73 2.984

6 0.62 3.73 2.3126

Another option, a Mal Wood Series 1 T56 geabox. (Mal's sersies 2 T56 box has the same ratios as Ford)

This was my first T56 gearbox; very good ratios with the 3.46 diff. I like this combination the best.

T-56a Series 1

Gear Ratio Diff Overall

1 2.97 3.46 10.2762

2 2.07 3.46 7.1622

3 1.43 3.46 4.9478

4 1.00 3.46 3.46

5 0.80 3.46 2.768

6 0.62 3.46 2.1452

Going to a T56 from T5, keeping the 3.46 diff, it will be noticably taller, actually 10% taller, which is significant. You may get a bit of clutch shudder in traffic.

The above table shows that even with T56 and 3.73 diff, 1st gear overall ratio will still be slightly taller than the T5 with 3.46 diff.

Brian

[xlnt6]

I know xlnt6 and gogo who have done the conversion as well still retain the stock diff ratio in their cars.

With the T56 the 3.45 diff is excellent for someone who does alot of highway driving, as I used too. Now with a job change I'm driving around town alot, and think the 3.7 would be better. Personally I'd like the car could to be punchier off the line in first/second, and fitting the 3.7 will provide that, as detailed in Brian's spreadsheet of ratios. I'm going to be swapping to a 3.7 diff in the next few weeks.

If on the other hand you want to do drag racing, then maybe you should kept the 3.45 as there is less need to change gears, especially just before the line. Then again, if you were into drag racing go with an auto, cause they are faster down the quarter anyway.

Cheers

Robin.

[6speedXR8]

was at the tuner all day on friday, finally got a few good numbers out the car after starting out with a measly 175rwkw, caused by a melted cat and a few issues with the wastegate/actuator.

it was making a promissing 298rwkw at the rears   but issues with the actuator raised their heads yet again.

today I was just cruising when I heard a huge bang as I changed to third gear and now it sounds like someone tipped a handfull of ballbearings in the gearbox.

drove it home as it still had 1st 2nd 4rth 5th and reverse.

even though it is a pain in the ass for it to happen I was releived it wasnt the engine that had thrown a rod as I initially thought

so now the hunt begins for a suitable replacement the T56,

what I need to know is what else is needed for the conversion, obviously I need a t56, but do I need the folowing-

gearbox support member

clutch+pressure plate and race bearing

flywheel

slave cylinder

anything else I am missing?

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We can supply all the bits you need to sort your car out, here is a list of parts and prices.

* New Tremec T56 6 speed, which has been blueprinted.

* New MWA short throw shifter fitted.

* New mount.

* New crossmember.

* New 31 spline yoke.

* Oil.

The cost of our T56 upgrade is $6395.

With this package you can reuse your original gearstick and knob or we can supply an aftermarket gearstick and leather knob for $250.

With the T56 upgrade you can also fit the MWA Billet Steel 11'' flywheel, MWA 11'' option 3 clutch and a new alloy concentric slave cylinder instead of the factory plastic one.

This is a great clutch package for the XR6T and Typhoon, cost is $1535.

The price for the Flywheel and Clutch package is higher than previously quoted prices because we now include a New Superior quality concentric slave cylinder.

We have these in stock and prompt freight to your door is not a problem.

Mal.