TT 1.8t 225bhp engine into my A2

[celsisone]

So people have been talking about this for years on this forum.
So I think it’s time that it gets done.
I have had this A2 for 8 years now, and have fitted 3 engines to it so far, this will be the fourth unit.

1st was a straight swop for a 1.4 AUA unit
2nd was 1.4 AUB from a fabia
3rd was 1.6 BCB with AUB head
4th is where we are now is TT 1.8t 225bhp engine

I am doing this in my spare time, so it’s going to take me some time .

Will take as many photos as I can and list parts I am using to help anyone else in the future.

In the past I have fitted 1.8t into a polo 6n2, so this shouldn’t be much different.

Plans are to use a fabia 100bhp 1.9pd 5speed gearbox, g60 flywheel and vr6 clutch,

Remove the standard oil water cooler in replace of oil cooler.

Removing all the bits off the engine I don’t need . Aircon and PAS pumps.

Will update when I can

If anyone has any questions, I will try and answer ASAP

 

[A2Steve]

Although there is a strong focus on these pages in recent years toward keeping them oem, I for one am very pleased to see this being done.

If its manageable, its going to open the A2 onto the radar of all those who would otherwise being doing the conversion to older VAG cars like mk2 golf, polos etc.

That can only strengthen the future of the A2 in my opinion.

 

[Erlingtheyounger]

Well said @A2Steve as much as a beautifully maintained fully OEM a2 is a wonderful thing, it’s also great to see people pushing the envelope and doing their own thing modification wise. It would be very dull if our cars all looked and drove the same imo.

 

[PlasticMac]

I can see the appeal of doing it. Very interesting journey, a challenge, but as Steve says, doable.
But, what do you do with it when it's finished? Insuring it, for the road will be as challenging as the build. It will be take a long time to do, be expensive, and worth a fraction of that.
Do it for the fun, (and frustration), not for the result. Most of all, you must be confident that you will see it through.
Mac.

 

[celsisone]

It can be done, but I am going to try and use as many parts from other Vag group cars, to make it easy from other people to copy .

Would be easy to just custom make everything.

But that wouldn’t help anyone .

 

[celsisone]

I can see the appeal of doing it. Very interesting journey, a challenge, but as Steve says, doable.
But, what do you do with it when it's finished? Insuring it, for the road will be as challenging as the build. It will be take a long time to do, be expensive, and worth a fraction of that.
Do it for the fun, (and frustration), not for the result. Most of all, you must be confident that you will see it through.
Mac.

Insurance will be cheap for me anyway. Already checked £400 full comp. I have 2 other performances cars.

The A2 is going to become my daily driver everyday.
I have a budget of £1000 to do it .
Value once done between 3k and 5k I think.

 

[Sarge]

 

[4markowen]

Always been curious as to how a different engine ECU talks to a car it wasn't supposed to be in. But I presume it just pings the same CANBUS messages to and from the instrument panel and how hard you're pressing the noisy pedal?

 

[celsisone]

Always been curious as to how a different engine ECU talks to a car it wasn't supposed to be in. But I presume it just pings the same CANBUS messages to and from the instrument panel and how hard you're pressing the noisy pedal?

I have looked into this, should be much of a problem both cars looms are from 2001 Audi .

 

[celsisone]

Looking at gearboxes now

Going to be using a fabia 1.9 Diesel 5speed

There are 13 different boxes but only 2 gear sets.

They only change the final drive

Ratio:	Final drive​	64:19 = 3,368​	65:18 = 3,611​
Z2:Z1	1st gear​	38:11 = 3,455​
	2nd gear​	43:22 = 1,955​
	3rd gear​	41:32 = 1,281​
	4th gear​	38:41 = 0,927​
	5th gear​	37:50 = 0,740​

My car runs 205/45/16 tyres

Theses tt engines redline at 6800rpm

With 3.368 ratio box
1st 40mph
2nd 71mph
3rd 109mph
4th 150mph
5th 188mph

Top gear cruising 70mph is 2500 rpm

With 3.611 ratio box
1st 37mph
2nd 66mph
3rd 101mph
4th 140mph
5th 176mph

Top gear cruising 70mph is 2700 rpm

I am going to use the 3.611 box

You can use standard mounts and driveshafts from the fabia too.

Bonus

 

[celsisone]

So I have finally sourced a gearbox from a 1.9 diesel PD100
It’s a GGU code

3.158 ratio box
1st - 39 mph
2nd - 72 mph
3rd - 114 mph
4th - 165mph
5th - 213 mph

Top gear cruising 2400 at 73 mph

I got the driveshafts, starter motor and mounts with the box too. Bonus

 

[George Hogg]

Standard mounts don’t quite fit and you need to fabricate a mounting plate for the engine. Space is very tight and the engine and box have to sit much lower. What inlet manifld are you looking at?

 

[celsisone]

Standard mounts don’t quite fit and you need to fabricate a mounting plate for the engine. Space is very tight and the engine and box have to sit much lower. What inlet manifld are you looking at?

Plan is to mount the gearbox and engine with both gearbox mounts and driveshafts, the Level up the engine and see where the engine mount places .

 

[celsisone]

Just fitted the uprated fuel pump, it’s an uprated seat leon Cupra R fuel.

Mate was running at 4 Bar with 400bhp .

So should be up to the job

 

[George Hogg]

 

[George Hogg]

It’s tight but a few folk have done it, it does have to sit low though

 

[celsisone]

View attachment 97093

Is that a 1.8 in Audi A2

 

[George Hogg]

That’s a 1.9 but they both have space issues

 

[celsisone]

That’s a 1.9 but they both has space issues

Yes Did you use the 1.9 gearbox and driveshafts

 

[George Hogg]

Yes the Fabia 6speed and driveshafts