have a 94 zf6. clutch is starting to slip. planning on installing a centerforce stage one, hurst short throw, findenza flywheel and couple others. anyone have tricks or tips on this project? anything will help! thanks.

 

Well... lots.

1) Don't use the Fidenza. I have it, and it's just too damned light for street use. I suggest the steel flywheel from GM as used on the F-bodies. It needs to be cut down .090.

2) The new flywheel needs to be match balanced to the existing dual mass. Otherwise, you will have vibrations coming out your ***.

3) Get gear oil. 3 litres of Castrol 10W-60, from your local BMW dealer. Drain the trans first, or else all the oil will come out the tail shaft. Remove both fill and drain first... they require a ton of torque.

4) Replace the driveshaft u-joints. Your in there.... same with the rear main. Might want to consider doing the oil pan gasket, too.

5) Get Beam Plates - check with www.zfdoc.com. They are nice and makes reinstalling the C-beam that much easier.

6) Get one of those paint pen things that will mark on metal. This will allow you to keep the c-beam lined up.

7) If you are doing this on your back, you will want a cheap tranny jack - the ZF is heavy! Harbour Freight has one for about $50.00.

8) I suggest, also, a couple of lengths of 3/8-16 threaded rods. When you are installing, if you run that in, they will act like guides for the transmission. I am pretty sure they are 3/8-16, but you can always get it after pulling out the tranny and comparing the threads.

9) Becareful of the hydraulics... they are prone to being broken. I would also carefully bleed with new fluid... that won't be as bad as bleeding new. Don't replace unless really broken. GM is having issues with these parts. I recommend Valvoline Synpower Brake Fluid. Kicks ***.

10) You will need some interesting tools... many swivel sockets are required to reach some of the bolts.

11) You will have to take the console apart, remove the **** and remove the inner shift boot. The **** can be a bitch. Remove the H-pattern cover and there is a metal wedge. That retains the ****, it needs to be pulled out. Vice-grips or something of the sort to yank it out, then unscrew accordingly.

If I think of anything else... I will let you know.

 

well done, also get the car up @ 16" from the ground, I put mine on the orange metal ramps in the front and 3.5 ton jack stands in the rear, if you want to get the tranny out from the car on the tranny jack the car needs to be even higher probbaly 22" or so. I took the tranny off the jack and slid it out the side with my car at 16"

 

This is the tranny jack I had it mind... very low profile!

http://www.harborfreight.com/cpi/cta...emnumber=39178

 

holy ****! well thanks alot guys and keep the tips coming. also i wont have a problem with tools and a lift because we have all those goodies on base. but one question with the flywheel? what exactly is wrong with using the lighter? less torque? get back to me

 

also forgot to ask. is there any other aftermarket flywheel applications that are available?

 

centerforce has a nice steel flywheel for your df clutch. its lighter than the dual mass, but heavier than the fidenza. the heavier flywheel on a street car lets you leave from a stop without having to rev up the engine like you have to with a light one. but a heavy flywheel makes for getting to rpm longer. you just need to find one that you can live with on the street and not hurt your performance.

 

do you know the exact part number on that cf flywheel? and also is it only for the dual friction clutch assembly?

 

for a 94' lt1 w/zf 6-spd, use centerforce 700175 steel flywheel, weighs 33.7 pounds. this flywheel should take the centerforce 1 or the dual friction clutch. i ran the df in my 89 and it was by far the best clutch i ever ran in it. it would take a 4500 launch with m&h dot's and never fade, i just abused the hell out of it and it was still good the day i took the engine down. i couldn't tell you how many launches were made with that clutch, just that it was a bunch. check summit, they gave me the best price for flywheel and df clutch assy.

 

The fidenza is just too light for the street. I have one, it's ok, but I would never use one again.

The fidenza weighs about 12lbs, the Fbody steel, ~22lbs, and the DM, ~40lbs!!! The steel is a nice balance between the 2.

 

I have a brand new Hurst shifter I'm going to be selling if you're interested. Let me know.