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diesel flywheels
Posted: 17 Jan 2021, 01:23
by t25adict
I have a 1.6d from an Audi 80 that I plan to put into a Doka that I am working on but I don't have a standard T3 flywheel.
So looking at other options. I have a 3 different tdi engines all with flywheels still fitted and the Audi 80 engine still has its flywheel.
If I was to use a tdi one then could I just change over to a tdi input shaft and still use a standard T3 starter motor?
Re: diesel flywheels
Posted: 17 Jan 2021, 08:03
by Aidan
what is the part number of the Audi80 flywheel ? probably stamped on the back of it
Re: diesel flywheels
Posted: 30 Jan 2021, 00:54
by t25adict
I will get the clutch off and have a look/ take some pictures over the weekend.
I presume "the back" would be the crank oil seal side of the flywheel rather that the clutch side? so would probably need to remove from the crank to see it ?
Re: diesel flywheels
Posted: 31 Jan 2021, 12:44
by t25adict
why move the post to a different section? I am looking at flywheel options but the engine is the same as a standard n.a 1.6 diesel as used in a t3. If the fly wheel turns out to be the same then I will be using a standard clutch setup.
Re: diesel flywheels
Posted: 01 Feb 2021, 12:23
by Aidan
Looking at the part numbers the Audi 80 flywheel is an 026 part number and they ran a 210mm clutch, whereas the T25 flywheel is a 068 part number and run a 215mm clutch, so it probably means that you can't use the SB flywheel, but you would be able to fit a T25 Diesel flywheel and clutch, a bit of extra expense but at least it will work, probably worth putting up a wanted ad. someone might have a used one spare
Re: diesel flywheels
Posted: 01 Feb 2021, 13:32
by silverbullet
You can get a solid 228 tdi flywheel for about £120 on fleabay
Re: diesel flywheels
Posted: 01 Feb 2021, 19:21
by Aidan
if you use one of the TDi flywheels you will have to use a hybrid clutch, TDI pressure plate with a wbx friction plate to get a 228mm clutch that works and mates with the input shaft of the gearbox, and the pressure plate cover has to be modified, remove the timing mark that sticks out or that will eat the bellhousing. You'll need to fit the T25 sump before fitting the flywheel as the bulge on the back prevents access to the 3 bolts behind it.
All this from memory so you'll have to double check, I don't do diesel but for some reason the diesel boys never post up and help out
Re: diesel flywheels
Posted: 01 Feb 2021, 21:55
by silverbullet
Mk4 2.0 GTi Golf flywheel and clutch (complete) fits and clears the JX bellhousing, once you have knocked the timing prongs on the clutch cover over.
Yes it does require use the TDi input shaft, but fixes a lot of problems in one hit.
Re: diesel flywheels
Posted: 02 Feb 2021, 14:01
by colinthefox
Aidan wrote: ↑01 Feb 2021, 19:21
for some reason the diesel boys never post up and help out
I have seen this opinion before, and the implication is that "diesel boys" don't want to help, so I think I need to comment here.
I think "the diesel boys" are probably just as willing to help as anyone, but I for one have learned not to offer advice unless I'm confident I know the answer to the original question (Even then negative comments about the answer aren't unknown!).
There are less "diesel boys" than petrol owners anyway, and most of those have just swapped out a standard diesel, and used a bog standard flywheel, clutch and starter motor on the new engine. As the original question was about other flywheel options, the only answer they can offer must be "We have no experience of that and can't offer any advice.", and that wouldn't be much help either. If everyone who didn't know the answer replied like that the forum would be a very cluttered place.
That leaves precious few with direct experience of mixing and matching flywheels, clutches, starter motors and input shafts on diesel engines. Maybe Aidan, you are actually one of the very few who have relevant knowledge, and I'm sure we all respect and are grateful for your vast knowledge, and your willingness to pass it on.
I don't want to hijack this thread, but thought a reply was called for here.................
Re: diesel flywheels
Posted: 02 Feb 2021, 14:35
by Forden341
For reference, I’m running 2 petrol GTi converted vans with standard JX flywheels, one is a Gipsy running an AGG with 113bhp and 122 lb.ft and the other is a Syncro Doka with a 16v ABF with 150bhp and 132 lb.ft.
I know it isn’t the original question but I’ve never had any issues with slipping and feel that anything bigger would probably be unnecessary unless for a high torque TDi conversions.
Re: diesel flywheels
Posted: 02 Feb 2021, 15:16
by clift_d
Don't forget the forum at
VWDiesel.net - there's a ton of info and expertise on there for diesel owners to tap into, including the JX engine.
Re: diesel flywheels
Posted: 03 Feb 2021, 13:07
by Aidan
colinthefox wrote: ↑02 Feb 2021, 14:01
Aidan wrote: ↑01 Feb 2021, 19:21
for some reason the diesel boys never post up and help out
I have seen this opinion before, and the implication is that "diesel boys" don't want to help, so I think I need to comment here.
I think "the diesel boys" are probably just as willing to help as anyone, but I for one have learned not to offer advice unless I'm confident I know the answer to the original question (Even then negative comments about the answer aren't unknown!).
There are less "diesel boys" than petrol owners anyway, and most of those have just swapped out a standard diesel, and used a bog standard flywheel, clutch and starter motor on the new engine. As the original question was about other flywheel options, the only answer they can offer must be "We have no experience of that and can't offer any advice.", and that wouldn't be much help either. If everyone who didn't know the answer replied like that the forum would be a very cluttered place.
That leaves precious few with direct experience of mixing and matching flywheels, clutches, starter motors and input shafts on diesel engines. Maybe Aidan, you are actually one of the very few who have relevant knowledge, and I'm sure we all respect and are grateful for your vast knowledge, and your willingness to pass it on.
I don't want to hijack this thread, but thought a reply was called for here.................
I wasn't having a dig at the n/a diesel boys really, you guys seem to share about the 1Y and the like but there's loads of people running TDi engines with TDi flywheels, TDi starter motors, Dual mass flywheels, TDi pattern input shafts etc..., I know I have fitted loads of those input shafts, it's those guys who I am calling out; sure many now pay a specialist to do the conversion whereas 15 years ago it was more people spannering their own vans on here and sharing, but some have done it themselves, researched the options; I know there are FB groups for all of that, the people over there just never seem to pitch in on here which is why the pinned thread at the top of this section about alt. diesels is so out of date; it's just a shame that those specialists who do such work don't share the information; I end up trying to help because the deafening silence doesn't help anyone feel there's value in 80-90 but I don't know all the answers because I have never done such a conversion and fully gone down the rabbit hole to learn about them, what I know I have picked up through osmosis and often may be wrongly remembered or wildly out of date
Re: diesel flywheels
Posted: 03 Feb 2021, 23:05
by Timburrows
I got a 228 mm lightened flywheel,30% updated vr6 pressure plate and a petrol sorry don’t remember the code clutch plate from evil bay,firm called techniclutch next day for under £200 2 years ago,rang them up,he knew just what I needed ,great service.they do get some bad reviews but mine has been perfect,just had to cut 2 tabs off,job done, I did post this in the modified section below but it was a couple of years age
Re: diesel flywheels
Posted: 05 Feb 2021, 20:34
by ELVIS
Have bought a few G60/1Z flywheels from Latvia/Lithuania for £30 delivered, 228wbx friction plate for £30 ish and VR6 cover plate for similar money. Tdi starters for £25 ish. All off ebay. Adapter off Baxter.
Cost of JX parts now , you can fit a bigger (better?) clutch/starter combo for wayyyy less. Obvs No Tdi I put shaft needed.
Re: diesel flywheels
Posted: 21 Feb 2021, 01:11
by t25adict
so it sounds like the Audi 80 flywheel wont be much cop.
could not find a part number on the flywheel at all. clutch measures 210mm and has a tdi size centre spline.
So.…
TDI flywheel wise I have a number of options.
I have an early 1z one (need to check if its solid)
I also have a solid flywheel conversion from a sharan tdi
sounds like a 228 setup might be fairly easy to do as Elvis said.
Will the 1z/g60 flywheel clear the sump, i.e. no need put the flywheel on after the sump?
I think with all the power from a 1.6 n/a this setup might cover it...
well I do have an AAz to go in at some point, then tdi after.