What are the differences between an NA-T conv. and a single conversion from a TT?

[RedM]

Is there any reason to choose to go single from a TT rather than from an NA?

 

If identical parts were fitted would a TT have a performance advantage over the NA (or vice versa) and why?

 

Any difference in driveability?

 

Is it cheaper to buy an NA and go NA-T or cheaper to go single from a TT?

 

Anything else you can think of?

[JamieP]

For one the gearbox is much stronger on the TT, im sure there is a few other reasons aswell, i have to say that them Na-t's are impressive though.

[Wez]

Without engine work I guess a TT lump could run alot more boost and therefore make more power.

[DaveK]

I just asked much the same in the NA-T thread. The cost of buying an NA and going NA-T seems a lot less than buying a TT and going single, at least from the figures I've seen.

[RedM]

For one the gearbox is much stronger on the TT, im sure there is a few other reasons aswell, i have to say that them Na-t's are impressive though.

 

That may be but I have an auto and would rather be manual for a big power single Supra.

 

Ruling out an auto to manual conversion on financial grounds.

[Whitesupraboy2]

One thing I do think is good about a NA-T is you have got the same 450BHP running through a shorter gear'd gearbox so you accelerate quicker. Maybe equivilant of a 500BHP TT of course you run out of top end quicker. (someone else can work out the power needed in a TT to accelerate as quick I cant be bothered.)

[JamieP]

I dont know much about the auto's... is the TT auto different to the NA auto anyone?

[RedM]

I dont know much about the auto's... is the TT auto different to the NA auto anyone?

 

Erm.. it's faster!

[Whitesupraboy2]

I dont know much about the auto's... is the TT auto different to the NA auto anyone?

 

Yes the difference is the number of clutch plates inside the gearbox.

[RedM]

FWIW, I'm thinking of selling the auto TT and getting a manual NA and then going NA-T with the change (depending on how much I get for the TT).

[supradibbs]

From conversations i have had with greg it would seem you can acheive alot more touque from a NA-T

[jay_NW]

I just had my N/A-T done apart from the gear box and the prop shaft, mechanically wise the N/A and the TT runs the same.

[Kopite]

The engines themselves are different as well though remember

[Scooter]

The engines themselves are different as well though remember

 

 

true but they are cheap as chips if you lunch one..........

 

TT engine = £1000+

 

NA engine £65-£300.........

[Scooter]

FWIW, I'm thinking of selling the auto TT and getting a manual NA and then going NA-T with the change (depending on how much I get for the TT).

 

get a later SZ-R 6 speeder and you'll have no gearbox problems at all.............just need to find out if uprated TT clutches can fit straight onto these NA boxes..........i'm thinking yes but not 100%

[Rayman]

Find a facelift NA with the 6-speed getrag and your laughing!

[mikeyb10supra]

Find a facelift NA with the 6-speed getrag and your laughing!

 

been tempted with this route myself

[SupraStar 3000]

I know in a perfect world the getrag box would be the way to go, but whats the deal with auto NA-Ts

[Mike B]

what about compression ratios - arn't the two engines built totally differently - one is built for na one for forced induction - they must be fundementally different...?

[Kopite]

Compression is different yep

[mikeyb10supra]

Compression is different yep

 

bit of a major factor I would say

 

This is why im put off by the idea

[Lebsteif]

bit of a major factor I would say

 

This is why im put off by the idea

 

Why would this be a major factor? put a stock TT headgasket instead of the very thin NA headgasket and your done.

[tooquicktostop]

I will be going to Turbofit tommorrow for an auto to manual conversion as the auto box while superb just cant take the power the single set up is delivering, shame really as I am a lazy git

[RedM]

If I went single single I'd have to have a manual box. I'm not lazy though. I'm a driving god.

[Jake]

Why would this be a major factor? put a stock TT headgasket instead of the very thin NA headgasket and your done.

It's not the head gasket that makes the compression ratio higher on a NA, they have different pistons.

The NA engine also lacks the oil squirters which spray up under the pistons.