uscarrera

Anyone know where to find a DIY for this
Thanks

RajDatta

Its very simple.
Tools to be used should be 24mm, 17mm, 13mm, 10mm sockets/wrenches, triple square set, cheesehead sockets, flywheel lock
Best way to do this is to remove the cat.
Disconnect battery
Disconnect the 02 sensor behind the intake manifold, cut the tie wrap the holds the wire against the oil filler.
Use 13mm sockets and wrenches to disconnect cat
Remove starter, I like to leave it hooked up
Remove slave cylinder using 13 mm sockets and leave it hanging.
Remove the side window using 13mm wrench/socket
Disconnect torque tube coupler by removing rubber circular grommet under tube
Use cheesehead to remove bolt holding coupler and slide the coupler back
Once coupler is free, remove 10mm bolts holding clutch guide by the pressure plate
Loosen 10mm bolt holding fork needle pin in place
Remove fork needle pin using appropriate cheesehead
Remove fork
Use appropriate triplesquare to remove bolts holding pressure plate
Turn engine clockwise using 24mm deep socket on the crack to get to all bolts
Your pressure plate should be free, remove pressure plate and disk
Use flywheel lock on bellhousing to keep MDMF from turning
Use triple square to remove bolts holding DMF to crank
The installtion should be reverse.
I might have forgotten a thing or two but it should be pretty accurate. Let us know if you run into a problem. This is all from memory.
Regards.
Raj

BruceWard

You need short triple squares to remove the flywheel if you are going to do so. If the flywheel is not damaged and you do not have any concerns about a rear main seal leak then I would not bother removing it.

This set of triple squares will make the job easier http://froogle.google.com/froogle?q=...+8&btnG=Search

Posts about my clutch change are at
https://rennlist.com/forums/showthre...7&page=1&pp=15
and
https://rennlist.com/forums/showthre...5&page=1&pp=15

Lots of pictures of the replacement can be found at http://968.2ward.com/index.php?ALBUM=ServiceAndRepair

Raj, lets write a howto for Club Stuttgart. I have plenty of pictures to go in the howto.

RajDatta

Bruce agreed. About time I start documenting stuff and we start using pictures to help everyone. I was also planning on doing a write up on the head swap job I am currently doing. I know you just did this as well so we might as well write it all down.
Raj

mikew968

With pca rules allowing a 968 to use a single mass flywheel from an S2 where would you get one? Are there aftermarket ones that would be the same???? What do they cost?


Thanks, Mike

BruceWard

Mike,

Can you tell us more about this PCA ruling?

I do not think that a S2 flywheel is thick enough to replace the DMF.

RajDatta

A S2 flywheel will NOT work on a 968 unless all the other bits and pieces are swapped as well. What it does have in common with the 968 setup is the 60-2 trigger setup. You would need to swap the bell housing, the torque tube, the fork and ofcourse the pressure plate/clutch and throw out bearing.
We did this on one of the turbo conversion because we didn't want to test the limits of the DMF. Most parts are readily available. Bell housing/tt can be a 951 or an S2.
Regards.
Raj

mikew968

I will have to check the regs again because there is no way I would do to that much trouble for a smf.

Mike

mikew968

Here is the pca rule changes
http://www.pca.org/clubrace/2007_rules_changes.pdf

Mike

BruceWard

Wow, someone at PCA did not think that rule change through. Although the flywheel may be allowed I bet they would get upset about the rest of the S2 setup. It would have been much better to allow usage of the Spec, Fidanza or the factory single mass flywheel.

mikew968

What do you think most pca racers use???????????!!!!!!!!!!!!!!!!!!!!!11

Mike

richard glickel.

Bruce,

Agreed. When I read this rule change, I couldn't figure it out since the other necessary mods (as noted by Raj) would automatically take the car out of its stock (F) class. Based on my own research there is no "factory single mass flywheel" available that works with the 968's clutch.

Raj tells me that there is an outfit making a replica single mass flywheel (possibly billet?), but I haven't yet followed-up on that tip. Given this year's rule change, I probably should look into Raj's source.

mikew968

As I have an original DMF with 90k, 40-50 track days including races and 30-40 auto-x days I would think my DMF's days are limited. What are my choices for replacement besides another factory DMF?

Thanks, Mike

RajDatta

There are a few places that are making crome moly flywheels, one of them is Ninemeister in UK. The other most people are unaware of. I will check with the 2nd source to make sure its still available and how much before i share that information.
BTW, Porsche did have a 1 piece flywheel but it was a Motorsports item and NLA.
Regards.
Raj

richard glickel.

Hey Pete,

What's the approximate weight difference between the dual mass and your new flywheel?

How about the pressure plate and clutch? Will a spring-centered clutch work with your single mass flywheel? There isn't enough room between the pressure plate and the flywheel to utilize a spring-centered clutch in the 968 at present.

I guess if your version is lighter than the S2 flywheel it might spin faster. Is that PCA's concern?