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Author Topic: lightened flywheel??  (Read 6900 times)

April 12, 2010, 02:07:38 pm

smoken u

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lightened flywheel??
« 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.
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1990 VW jetta 1.6 td, 2.5" exhaust, no muffler, governor mod 2010 edition, K&N filter. and now 66 hp and 136 ftlbs.
project 1.6 liter in the works  :)
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You don't rev a VW diesel, you increase the clatter.
Reply #1April 13, 2010, 12:00:39 pm

monkey magic

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Re: lightened flywheel??
« Reply #1 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
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mTDi syncro
Reply #2April 13, 2010, 12:23:25 pm

snakemaster

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Re: lightened flywheel??
« Reply #2 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
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Glenmorangie  single highland malt
Reply #3April 13, 2010, 12:49:09 pm

blackdogvan

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Re: lightened flywheel??
« Reply #3 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.
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1991 Vanagon 1.9 mTDI
Reply #4April 13, 2010, 02:39:39 pm

smoken u

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Re: lightened flywheel??
« Reply #4 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
« Last Edit: April 13, 2010, 04:06:32 pm by smoken u »
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1990 VW jetta 1.6 td, 2.5" exhaust, no muffler, governor mod 2010 edition, K&N filter. and now 66 hp and 136 ftlbs.
project 1.6 liter in the works  :)
-------------------------------------------------------
You don't rev a VW diesel, you increase the clatter.
Reply #5April 13, 2010, 03:34:24 pm

blackdogvan

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Re: lightened flywheel??
« Reply #5 on: April 13, 2010, 03:34:24 pm »
Single mass or dual mass FW?? Dual mass suks.
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1991 Vanagon 1.9 mTDI
Reply #6April 13, 2010, 03:47:47 pm

redneck_vdub

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Re: lightened flywheel??
« Reply #6 on: April 13, 2010, 03:47:47 pm »
It's a dual mass flywheel. It's my engine that were workin on.
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'01 Golf TDI "The Redneck V-Dub"

360,000kms on the body; 17,000kms on the engine :D

EGR delete, 2.25" turbo back, air box mod, Giles injectors, VNT 17, ARP headstuds, 14LB flywheel, boost and EGT gauges.
Oo=w=oO
Reply #7April 14, 2010, 02:14:01 pm

smoken u

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Re: lightened flywheel??
« Reply #7 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.
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1990 VW jetta 1.6 td, 2.5" exhaust, no muffler, governor mod 2010 edition, K&N filter. and now 66 hp and 136 ftlbs.
project 1.6 liter in the works  :)
-------------------------------------------------------
You don't rev a VW diesel, you increase the clatter.
Reply #8April 14, 2010, 02:28:56 pm

blackdogvan

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Re: lightened flywheel??
« Reply #8 on: April 14, 2010, 02:28:56 pm »
I'm using a 228mm TDI single mass FW for my build FWIW.
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1991 Vanagon 1.9 mTDI
Reply #9April 14, 2010, 10:11:59 pm

Powered by Spearco

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Re: lightened flywheel??
« Reply #9 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.
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'87 Syncro Transporter Single Cab "Now TDI"
'78 Rabbit..Gas Weekend Racer
'81 Caddy..Diesel 1.6/1.9 TD hybrid 275HP 349TQ "Retired"
'90 MultiVan, 2.5 Suby Swap, Porsche Brakes
'76 Scirocco TD dragster project
'13 Golf R:. Tuned
'98 Puch G320
Reply #10April 15, 2010, 02:08:32 pm

smoken u

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Re: lightened flywheel??
« Reply #10 on: April 15, 2010, 02:08:32 pm »
awesome :)
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1990 VW jetta 1.6 td, 2.5" exhaust, no muffler, governor mod 2010 edition, K&N filter. and now 66 hp and 136 ftlbs.
project 1.6 liter in the works  :)
-------------------------------------------------------
You don't rev a VW diesel, you increase the clatter.
Reply #11April 16, 2010, 06:03:09 am

shortysclimbin

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Re: lightened flywheel??
« Reply #11 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!
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Reply #12April 21, 2010, 08:58:46 am

Rabbit on Roids

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Re: lightened flywheel??
« Reply #12 on: April 21, 2010, 08:58:46 am »
why would you have to have the clutch balanced if you never did anything to it?
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Reply #13April 21, 2010, 09:30:36 am

monkey magic

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Re: lightened flywheel??
« Reply #13 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.
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mTDi syncro
Reply #14April 21, 2010, 12:07:40 pm

snakemaster

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Re: lightened flywheel??
« Reply #14 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.ramclutches.com/critical%20difference/critical_difference_billet_flywheels.htm
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Glenmorangie  single highland malt
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