ALFAGTV6.COM

[Mats]

Affirmative.

[PietereQ]

Mats I know you're reluctant to share any data at this stage of project (testing) but since i have limited access to my car I have just few questions regearding flywheel dimensions for V6:

-Bolt PCD
-Bolt dia.
-flywheel spigot offset

When's the testing?

[Mats]

109.7mm PCD and 12mm bolt dia.
Offset depends, are you keeping the bushing or not?

Testing, well, sometime this year...

[PietereQ]

Mats you mean the pilot bearing? This how my flywheel looks. Funny thing is when I was removing the driveshaft, there was no pilot bearing on the driveshaft itself. Maybe that uncorroded bit sticking out from the flywheel is the remnants of the bearing? Anyway what also keeps me bothered is the length of the flywheel bolts. I assume that either flywhell side of the cvj flange would have to be as thick as the donut, which would suck in means of rotating weight OR make 3 sleeves that would press the flange against the flywheel.

[Mats]

There is a pressed in bushing in the flywheel, brass or bronze. Bolts need to be replaced, too long and too risky to cut new threads in the existing.

[PietereQ]

Well it's a standard NTN CV-joint, probably is in place on quite a few cars actually.

I see it's easier to work with than the Touareg/Cayenne cvj. Finally got it fabricated right:

I hope since they're for ze Germans, they should last
Now gotta, get hold of that flywhell locking tool, which will probably mean making it from scratch

[ar4me]

Here is what I have for the 3.7 24v race Milano. One-piece carbon fiber driveshaft with Scuderia Biscione front coupling. As you can see it uses Milano/GTV6 front splined section, but late Alfetta rear flange. I have Alfetta yoke and clutch cover with Alfetta slave cylinder setup on transaxle. The shift linkage is relocated from tunnel into cabin. The WRX STI guys run these kind of driveshafts also on their street cars.
Jes

[kevin]

Jes, just seen this. Absolutely awsome. The entire gearbox would have to be dropped to put this in or can you tilt the dedion enough.

[ar4me]

Yes, I plan to slide the gearbox backwards a bit duing install and removal. Everything is currently out of the car, and that is usually the process I use anyway when putting dedion and transaxle back-in (or removing the combo).
Jes

[MD]

Jes

A very nice job. Only sorry I cannot get one made in Oz.
Love the front coupling.

For the rear the Alfa coupling may still be a weak link. Perhaps a can over it like Kevin uses would help. However, (in any future redesign) I see no reason why you couldn't use a CV joint there as this would take care of the coupling issue and off course there is sufficient fore and aft slide in the joint to be able to fit the shaft without moving the gearbox at all.

Worse case scenario fit a universal joint with slip joint before it instead of the donut. That would also allow for rotation, location and length variation so you would not need to move the gearbox also. See photos.

Perhaps you could give us the details of the manufacturer and I could see if I need to morgage the house to get one..

[ar4me]

Absolutely. It was made by ACPT - http://www.acpt.com Although I have not yet run it, it was based on a proven design from a race GTV6 (Al Mitchell) and according to Richard Jemison's specs. ACPT is local to me, so it was easy to visit them, bring various Alfa driveshaft pieces, discuss dimensions and design options, etc.

Although safety was my main motivation, it does offer a weight saving (of rotating mass). It is 1/3 lighter, or in absolute numbers, 7.5 lbs lighter (I think my bathroom scale showed).

Jes

[ALFA GTV6 GP]

Looks good Jes .

MD I would be interested in one or two.

Maybe a group buy?

John

[PietereQ]

Looks like a season for driveshaft upgrades. Id be interested how your shift linkage mechanism looks now Jes.

Now Mats, if you're reading this, have you threaded the holes on the cvj side of the front flange
I took flywheel and other junk to the shop this morning, and I need to tell them, whether thread the holes or not.

thanks

[Mats]

Yes 6xM8x1.

Now, that's one clever way to use a windsurfing mast...
Just kidding, looks nice, how much did it set you back?

[MD]

Peter,

I think Jes said that the shift linkage is inside the cabin. I use the same set up. Gets around the problem and makes for a much better shifter anyway. Easy on a race car. Harder in a street job but I have done it for both.