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TDI Engine with Gas Transmission: Possible?

 
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Jan03
Blaumann
Blaumann


Joined: 08/24/2003
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Location: Dänemark
2010 Volkswagen Polo
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Post25-08-2003, 8:10    Subject: TDI Engine with Gas Transmission: Possible? Quote

Hello.

I'm planning to replace the gasoline engine (ABS motor, 90 hp) in my Golf III with a TDI engine (1Z). My problem is that I am only allowed to replace the engine itself (for tax reasons, I live in Denmark) icon_cry.gif. Does anyone know if the 90 hp TDI can be connected to a transmission from the 90 hp gasoline engine? The gasoline engine has a mechanical clutch (210mm). Can the mechanics handle the larger clutch of the TDI, or will I have to replace the clutch (or switch to hydraulic actuation)?

/Jan


Translated on 27-07-2026, 1:19.
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Post25-08-2003, 12:59    Subject: TDI Engine with Gas Transmission: Possible? Quote

Hi there.

The clutch actuation of the Golf transmission works completely differently. The release bearing is not located in the bell housing, but at the other end of the transmission and presses on a rod, which in turn presses on the pressure plate. The construction of the clutch itself is also 'reversed.' The only option would be to install a reinforced clutch and use the starter motor from the 1.9 TDI engine, although I'm not sure if it will fit the flywheel's teeth. Also, the transmission ratio is much too short. The gasoline engine reaches approximately 180 km/h at 6000 rpm, while the TDI only reaches about 120 km/h at its maximum speed of around 4200 rpm. Therefore, normal driving is impossible.

Best regards,
Gregor


Translated on 27-07-2026, 1:20.
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joergs
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Post25-08-2003, 13:06    Subject: TDI Engine with Gas Transmission: Possible? Quote

I also think it will fail due to the transmission, as the transmissions for the TDI and gasoline engines likely differ in their gear ratios alone.


Translated on 27-07-2026, 1:22.
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Jan03
Blaumann
Blaumann


Joined: 08/24/2003
Posts: 142
Karma: +6 / -0   Thank you, like it!
Location: Dänemark
2010 Volkswagen Polo
Free account, no CAN development support

Post25-08-2003, 20:51    Subject: TDI Engine with Gas Transmission: Possible? Quote

Okay, I understand about the translation. This just needs to work until I get through the technical inspection (TÜV). After that, I'll definitely install the TDI transmission.
It doesn't sound like there's a possibility icon_sad.gif icon_sad.gif. Can't I attach the flywheel, including the clutch from the ABS motor, directly to the TDI crankshaft?

/Jan


Translated on 27-07-2026, 1:22.
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