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Engine Specific Info and Questions => TDI Engine -General Info => Topic started by: smoken u on April 12, 2010, 02:07:38 pm

Title: lightened flywheel??
Post by: smoken u on April 12, 2010, 02:07:38 pm

just wondering if anyone on here is running a lightened flywheel on there tdi, (ALH) thinking about having a friends lightened, or possibly doing it myself if possible and then sending it out for re-balancing afterwards.

Title: Re: lightened flywheel??
Post by: monkey magic on April 13, 2010, 12:00:39 pm

Quote from: smoken u on April 12, 2010, 02:07:38 pm

just wondering if anyone on here is running a lightened flywheel on there tdi

Yes, mine is lightened (AHU). :D

Title: Re: lightened flywheel??
Post by: snakemaster on April 13, 2010, 12:23:25 pm

i lightened my vr6 fly wheel for my 1z tdi ,not got round to puting it on yet , a guy that builds race engines said it wont need balanced as long as you dont go over 5500 rpm and lightened on a true lathe , this is what i have been lead to belive  :P

Title: Re: lightened flywheel??
Post by: blackdogvan on April 13, 2010, 12:49:09 pm

I've heard a few comments about rough idle & difficult clutch engagement with too much taken off, 10-14lb range.

Title: Re: lightened flywheel??
Post by: smoken u on April 13, 2010, 02:39:39 pm

okay so seems that some of you on here are running them  :), on the ALH flywheel, there is a heavy steel band welded to the outside of the flywheel, is that the weight to be machined in question, as i dont really see many good places for extra weight to removed from

Title: Re: lightened flywheel??
Post by: blackdogvan on April 13, 2010, 03:34:24 pm

Single mass or dual mass FW?? Dual mass suks.

Title: Re: lightened flywheel??
Post by: redneck_vdub on April 13, 2010, 03:47:47 pm

It's a dual mass flywheel. It's my engine that were workin on.

Title: Re: lightened flywheel??
Post by: smoken u on April 14, 2010, 02:14:01 pm

lol stupid dual mass, will a VR6 flyweel bolt on to the TDI crank?? i know it will on the idi's but im not sure if they are different bolt patterns or not.

Title: Re: lightened flywheel??
Post by: blackdogvan on April 14, 2010, 02:28:56 pm

I'm using a 228mm TDI single mass FW for my build FWIW.

Title: Re: lightened flywheel??
Post by: Powered by Spearco on April 14, 2010, 10:11:59 pm

No. The VR6  FW has 8 bolt holes, but is a 228mm FW. You want a G60 FW or any '99-'05  four cylinder, its still a 228mm FW.
The bolt patteren is the same for the 4 cylinder engine, 1975 Rabbit to 2005 GTI 1.8t.

Title: Re: lightened flywheel??
Post by: smoken u on April 15, 2010, 02:08:32 pm

awesome :)

Title: Re: lightened flywheel??
Post by: shortysclimbin on April 16, 2010, 06:03:09 am

I have ran down to a 17lb flywheel.  I don't like much lower than that.  PLEASE PLEASE PLEASE have the clutch and the flywheel balanced if you shave it. What was said above is not true when you have as much torque as we do!  PS- some aftermarket flywheels are not balanced!

Title: Re: lightened flywheel??
Post by: Rabbit on Roids on April 21, 2010, 08:58:46 am

why would you have to have the clutch balanced if you never did anything to it?

Title: Re: lightened flywheel??
Post by: monkey magic on April 21, 2010, 09:30:36 am

Because they dont leave the factory balanced, and can be quite far from balanced. Ideally you would balance the whole bottom end assembly, including the clutch. Its all part of the same spinning mass after all.

Title: Re: lightened flywheel??
Post by: snakemaster on April 21, 2010, 12:07:40 pm

the VR6 flywheel bolts on my other tdi 1z engine just fine i only run 130hp and 190-210ish fptq , i will have a beter read into balancing wheels flywheels , hears some links

http://www.emachineshop.com/machine-shop/Flywheel/page535.html (http://www.emachineshop.com/machine-shop/Flywheel/page535.html)

http://www.ramclutches.com/critical%20difference/critical_difference_billet_flywheels.htm (http://www.ramclutches.com/critical%20difference/critical_difference_billet_flywheels.htm)