type 4 200mm aftermarket flywheel problem

[Eddie DVK]

Hi,

Do people who have a type 4 200mm aftermarket flywheel run in trouble with eating up cranck-flywheel seal.
I am driving the engine about 2 year (about 6000km) with this flywheel and it is the 3th time that the flywheel seal starts to leak.
Are the measurements off this flywheel off? especially the radius, which I can t measure?
I tryed both versions off seals normal and vitton one, but the result is the same after about 2000 km it starts to leak (and slipping of the clutch).

Help appreciated

Regards Edgar
  

[spanners]

Most folk fit the seal wrongly and only flush with the case, it must seat right down in the case bore.

[Eddie DVK]

ok, I did that to, but that s how it is written in most manuals..  
You say I have to put it in till it will not go futher?

Edit: If you putt it whole in, won t it block the oil galley that lubricates the flywheel seal if I remember correctly?

Regards Edgar

[JIMP]

Eddie

you mean the chinese version that comes directly for 200mm clutch? If this is the case maybe the flywheel is the problem, we used one on our drag car beleiving that is a true forged one as they told us. I understood that something isn't 100% O.K. when we were making some test measurements and we had to put on and off the flywheel several times, in that time we didn't use the central washer with 5 holes for the bolts but we secured directly with bolts and not even in the specified torque but less. When we got the bolts off, the spots on the flywheel were like "milled" from the bolts heads, that soft it was. So wasn't any surprise for us when on the dyno after about 6-7 sessions ripped off altogether on the flange section, only 1 bolt remained tight and that saved the rest of the engine -and us- . We're supposing that being so soft some of the bolts loosed their preload and started getting undone, after this the disaster is not away, so what I want to say for your case maybe being that soft has already done some kind of "channel" like an aluminum would do so the seal can't do it's job any more, I would check it if I was you

Friendly

Dimitrios

[karl h]

only the porsche 914 flywheels are forged (like all type 1 Flywheels), stock type 4 is cast

[Eddie DVK]

Eddie

you mean the chinese version that comes directly for 200mm clutch? If this is the case maybe the flywheel is the problem, we used one on our drag car beleiving that is a true forged one as they told us. I understood that something isn't 100% O.K. when we were making some test measurements and we had to put on and off the flywheel several times, in that time we didn't use the central washer with 5 holes for the bolts but we secured directly with bolts and not even in the specified torque but less. When we got the bolts off, the spots on the flywheel were like "milled" from the bolts heads, that soft it was. So wasn't any surprise for us when on the dyno after about 6-7 sessions ripped off altogether on the flange section, only 1 bolt remained tight and that saved the rest of the engine -and us- . We're supposing that being so soft some of the bolts loosed their preload and started getting undone, after this the disaster is not away, so what I want to say for your case maybe being that soft has already done some kind of "channel" like an aluminum would do so the seal can't do it's job any more, I would check it if I was you

Friendly

Dimitrios

Yes I mean the flywheel that accepts the 200 type 1 clutch stuff.
Ok that doesn t sound ok. I didn t notice the softness sofar. But will check.
Will have to look if the bolts are still on the torque spec. I can t remeber from the two times that I pulled the engine that those where off.
The endplay of the crank was not off, I measured those and that was still ok.
Just the seal is leaking, the last time I polished(scottsbride) the 'neck' of the flywheel a little. But without result.

Bought a type 4 215mm flywheel, I think I am going to use that one, and see if that one starts to leak after a few thousand km.

Regards Edgar

[Eddie DVK]

Bump,

somebody maybe got a solution on how to put the seal in correct, or some kind of special treatment for the seal or flywheel?

Regards Edgar

[Udo]

I have a brand new original 200mm flywheel for sale :-)

Did you messure if it does not go up and down ? some do not have the center of the crank at the flywheel

Udo

[spanners]

Fit the seal to the BOTTOM of the bore, not flush with the case, if you do it will leak,  fit a new 'o'ring, ensure end float is to spec, lubricate lightly the flywheel radius and 'o' ring and fit the flywheel, my flywheel is Chinese made' European' one 200mm T4 type, its good quality and hard as it should be, i've raced it hard for years no problems.

[Old Guy]

All Chinese flywheels are not the same.  I know the AA 200mm, 215mm and 215mm Porsche are all Forged.

[JIMP]

Posted by: Old Guy
Insert Quote
All Chinese flywheels are not the same.  I know the AA 200mm, 215mm and 215mm Porsche are all Forged.

Yes probably, the one I had it wasn't AA, it came in a white box with no writing at all on it, now that I see that lot of people are using them and mine being scrap already I will make some test to see material and hardness and let you know,

Friendly

Dimitrios

[Eddie DVK]

I have a brand new original 200mm flywheel for sale :-)

Did you messure if it does not go up and down ? some do not have the center of the crank at the flywheel

Udo

I don t know never measured that,  I measured the outside diameter of the flange and that size was the same as a original type 4.
Udo you got PM

[Eddie DVK]

Fit the seal to the BOTTOM of the bore, not flush with the case, if you do it will leak,  fit a new 'o'ring, ensure end float is to spec, lubricate lightly the flywheel radius and 'o' ring and fit the flywheel, my flywheel is Chinese made' European' one 200mm T4 type, its good quality and hard as it should be, i've raced it hard for years no problems.

Ok will try this. thanks

Regards Edgar

[Typ3racing]

Like most of the cheasp aftermarket engine parts,

those flywheels are crap.

throw it as far as you can!

[Erlend / bug66]

DPR makes a 200mm flywheel with a german T1 core

[Airspeed]

I used this flywheel (with custom bolts) and it holded 465 hp on my old 2,2ltr type 4 turbo engine with a twin plate Tilton clutch.
Its a nice forged flywheel imo and works well if you machine and install things corrrectly (as always).

[Eddie DVK]

I like to thank Udo (Becker),
He always comes to the rescue (when I have some sort off trouble with my engine) with advise or parts.
 
Real outstanding guy.

THANKS

Regards Edgar