1,9d engine to 2.9 gti box

[wukkie1]

hi ive got a 206 gti and have out a 1,9d engine in it all bolts together but i need a bracket to o/s drive shaft that fits the engine and supports the drive shaft, is there one regards wukkkie1 IN THE TITLE I MEANT TO PUT 2.0 gearbox

[Bird dog]

If you have fitted a 1.9 diesel engine to a 2.0 GTI gearbox, you will probably find that all of the gear ratios are useless. This is because a diesel engine revs to around 4,000 rpm maximum, whereas a petrol engine revs to around 6,000 rpm (around a 33% difference).

I had a mate that once fitted a Vectra 3.2 GSI gearbox to his Vectra 2.2 DTI (both use same gearbox but with different final drive ratios). This resulted in a diesel engine that not only used much more diesel, but also was much slower and much noisier. Bad idea!

In general, diesels are geared much higher than petrol engines. Even the 2.2 DTI Vectra is geared much higher than a 3.2 GSI Vectra. The GSI uses all the same gearbox ratios that the 2.2 DTI does, but has a much lower final drive ratio (4.05 to 1 compared to 3.61 to 1 for the DTI).

[wukkie1]

thanks for that so if i got a 1.9 gearbox will it drop in with the petrol drive shafts thanks bill

[Bird dog]

Originally Posted by wukkie1

thanks for that so if i got a 1.9 gearbox will it drop in with the petrol drive shafts thanks bill

I have no idea if the drive shafts will fit. I can only say that your 1.9 diesel engine isn't going to be too happy mated to a gearbox that's meant for a petrol engined 2 litre car.

To give you some idea of the problem. My mates 2.2 DTI was running at over 10 mph less in top gear at 2,000 rpm (top speed was cut by 20 mph). Which probably meant that he would have been much better off with the 2.2 petrol engine!

Your best bet is to see if you can see, on the current gearbox, what the final drive ratio is (usually stamped on it somewhere). And then compare it to the ratio on the diesel engined gearbox. Ideally the diesel engined gearbox needs to have a much lower number (higher ratio) than your current gearbox. The lower the better.

[wukkie1]

hi what i meant was if i got the right gearbox is the petrol drive system going to fit in new box regards bill

[Bird dog]

Originally Posted by wukkie1

hi what i meant was if i got the right gearbox is the petrol drive system going to fit in new box regards bill

No idea. You may have to change the drive shafts.