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Go Back   TDIClub Forums > VW TDI Discussion Areas > TDI Power Enhancements

TDI Power Enhancements Discussions about increasing the power of your TDI engine. i.e. chips, injectors, powerboxes, clutches, etc. Handling, suspensions, wheels, type discussion should be put into the "Upgrades (non TDI Engine related)" forum. Non TDI vehicle related postings will be moved or removed. Please note the Performance Disclaimer.

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Old November 8th, 2019, 14:13   #1
TDI Dave
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Join Date: Apr 2019
Location: Howell, Michigan
TDI(s): 2005 Passat
Default 1.8T or 1.9TDI DMF Flywheel?

Is there much difference between the US spec 1.8L gas turbo DMF and the European diesel version? I'm assuming the diesel version may have more dampening? Anyhow, I'm looking to get rid of my SMF and go to something smoother. I would like to get the US spec flywheel as they are cheaper due to currency and shipping costs. But don't want o make matters worse.
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Old November 8th, 2019, 15:05   #2
eddieleephd
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Join Date: May 2012
Location: Asheville, NC
Fuel Economy: 38mix / 47@70-75
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Is there something won't with the diesel version?
https://www.idparts.com/luk-17-050-c...kit-p-740.html

Search 038105264E on rock auto and they have a cheaper one

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Old November 8th, 2019, 15:20   #3
QuickTD
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Join Date: Feb 2002
Location: SW Ontario
Default

Quote:
Originally Posted by eddieleephd View Post
Is there something won't with the diesel version?
https://www.idparts.com/luk-17-050-c...kit-p-740.html

Search 038105264E on rock auto and they have a cheaper one

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I think the OP has a b5.5 passat, which is longitudinal configuration. The transverse flywheel won't work.

The real diesel flywheel will have heavier springs in the DMF to deal with the increased torque. The gas flywheel may have a shorter life as the springs will be compressed more by the higher torque. Sometimes even far enough to reach "coil bind".

That said, I've been running a 2.0TFSI gas flywheel on a BHW (swapped into a B7 audi A4) with a stage 2 tune for about 30000km and all is well. If you aren't a hot rodder and don't do a drag race launch every time you leave a light, the 1.8T flywheel may last a long time.
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Old November 8th, 2019, 15:39   #4
eddieleephd
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G60 maybe?

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Old November 8th, 2019, 15:57   #5
QuickTD
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Quote:
Originally Posted by eddieleephd View Post
G60 maybe?

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Still a transverse flywheel, starter comes in from the wrong side, ring gear position is different. Passat TDI is mounted front to back, like an audi (mechanically, it is an audi A6) Starter is mounted on the engine side of the bellhousing.
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Old November 9th, 2019, 11:59   #6
eddieleephd
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The final option I can think of is the T4 2.5tdi clutch, not sure though

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Old November 9th, 2019, 12:59   #7
Yourbuddysatin
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Join Date: Oct 2016
Location: Pennsylvania
Fuel Economy: 32-35mpg
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A friend of mine had a 1999 Audi wagon Quattro with a 1.9tdi in it. Used a s4 trans and I believe a 1.8t clutch set up. Not sure if that helps.
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Old November 10th, 2019, 03:24   #8
adamss24
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Join Date: Nov 2005
Location: Great Britain
Fuel Economy: 35-45mpg
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The t4 2.5 tdi clutch wont work, the inline 5 cyl lump its also a transverse engine and different setup altogether (maybe AJT engine will work but ACV 102 Bhp will not work).

A AVF pd 130 clutch will work but its 240mm, you can either use a fixed Sachs pressure plate or a LUK self adjusting PP.

AWX is 228mm clutch with DMF and also works in a longitudinal 5 speed gearbox.
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Old November 11th, 2019, 09:50   #9
vtpsd
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I have used the 1.8t longitudinal DMF in my audi 90 with an AHU, worked fine until rolling into the power in 4th gear, when the DMF springs would bottom out from the torque and cause a horrible shudder. I had to change it out for a 240mm TDI specific DMF. My car is pretty hopped up, it might work fine on a lesser powered TDI.
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