Couple of gearbox related questions for you.

 

I have a manual NA.

 

If i fit a TT engine i will need to buy a TT clutch and flywheel. Are there any other changes needed or will this all go together no probs?

 

Also, i have a one piece Z1 propshaft. If i change to a TT gearbox, will the propshaft still fit?

 

Cheers

Fly wheel is bigger ot the tt, you will need to keep your na fly and clutch or get a tt gearbox

Fly wheel is bigger ot the tt, you will need to keep your na fly and clutch or get a tt gearbox

 

Or just grind out the bellhousing on the NA box and pack out the starter motor:)

Yep could do that Pete

Or just grind out the bellhousing on the NA box and pack out the starter motor:)

 

Cheers guys

If i were to fit a TT box, would the prop still fit?

You would need TT front half and NA rear half, thats if you were keeping the NA diff

You would need TT front half and NA rear half, thats if you were keeping the NA diff

 

It's a one piece Z1 prop. I thought the manual boxes were the same where they meet the prop?

Dont think so, I could be wrong, but I think the spline layout is different.

It's a one piece Z1 prop. I thought the manual boxes were the same where they meet the prop?

 

They are.:D

i went googling:

 

"The NA and TT have the same 5 speed transmission model #, same splines on input and output

shafts, etc. and the housings are the same except for one small difference. The spot where the

starter mounts on the bellhousing on the TT is machined a little differently so that the starter will

properly engage the slightly larger diameter flywheel and so that the flywheel teeth won’t scrape

the inside of the bellhousing. You can use an NA 5 speed in a TT but you just have to shim the

starter out a little with some flat washers and sometimes grind a little out of the inside of the

bellhousing so the TT flywheel will fit inside."

and:

 

"The TT clutch has a larger contact face, a stronger pressure plate and a slightly larger diameter

flywheel. You can use a TT flywheel in an NA by shimming out the starter but can’t use a NA

flywheel in a TT without cutting down the spot where the starter mounts to the TT transmission.

You have to use a TT clutch assembly with a TT flywheel and the same with NA because of the

way the pressure plate bolts to the flywheel. The TTs also included a clutch booster assembly

because of the stronger pressure plate. The clutch pedal and master cylinder were different

because of a vacuum assisted clutch booster inside the firewall. The booster included two plastic

tanks for vacuum storage also, one under the driver’s fender and one under the clutch master

cylinder and a network of hoses connecting them all. Because of the clutch booster, the clutch

pedal and master cylinder are different between NA and TT but all the slave cylinders are the

same. You don’t have to add this setup when doing a conversion (a lot of trouble) the clutch pedal

will just be stiff but it’s not at all a problem in our opinion."

i went googling:

 

"The NA and TT have the same 5 speed transmission model #, same splines on input and output

shafts, etc. and the housings are the same except for one small difference. The spot where the

starter mounts on the bellhousing on the TT is machined a little differently so that the starter will

properly engage the slightly larger diameter flywheel and so that the flywheel teeth won’t scrape

the inside of the bellhousing. You can use an NA 5 speed in a TT but you just have to shim the

starter out a little with some flat washers and sometimes grind a little out of the inside of the

bellhousing so the TT flywheel will fit inside."

 

Yep. Thats just what I told ya!!!:bow:

You will find the speed sensor is a different pinnion though