ALFAGTV6.COM

[PietereQ]

This is for testing on my car but if it works I will show you how to make your own.

Mats does it mean youll make blueprints (of the front cvj adapter and rear cvj to clutch flange) available to the public?

I have removed the driveshaft few days ago (well the new front box mounts were broken anyway) and took it to driveshop and ask the guys if they were up to the task to convert it to cvj. They quoted a pretty decent price, and are thinking of using porsche cayenne/ touareg cvjs. The only problem now is designing adapters for both ends.

[Duk]

Maybe no real help, but the Hardie/Guibo/Flexable rubber dognut off a Ford BA Farcon XR6 turbo (and the AU model too) is very close to fitting.

Some questions:
Is the larger of the 2 different PCDs on the flywheels?
Do the guibos themselves play a part in the centering of the driveshft to the flywheels or is that done soley by the spigot on the driveshaft at the GB end (haven't seen the engine flywheel yet, just pulled the shaft out of the splines. Yes I marked it ).
Can someone supply the distance between centers of the holes for the 2 diameter PCDs, then I can check. That is, the distance between any 2 holes that are either for the g'box and 2 holes for the driveshaft.

These things live behind the g'boxs of 450-550Nm engines in cars that weigh 1800+Kgs, should survive behind an NA Alfa V6

[Mats]

Mats does it mean youll make blueprints (of the front cvj adapter and rear cvj to clutch flange) available to the public?

Something like that, yes.

[MD]

Mr Duk.

Dear sir,

It has come to my attention that you are seeking advice. The advice is deemed to be as follows:-

The big fukker is the one at the flywheel thingy end.
The donut does not function as a centering device for the front part of the propshaft. The back ones do.
If you use a strong unit in the front, your couplings are only as good as the weakest link in the chain of the three so make sure the you never lose sight of that cork bung in your canoe while travelling up sheit creek.

I hope our advice has assisted you in some small way. If we can be of any further assistance in ANY way, please dial OOO.

Your OZ (and caring) mates.

[PietereQ]

Mats does it mean youll make blueprints (of the front cvj adapter and rear cvj to clutch flange) available to the public?

Something like that, yes.

Thats very nice Too bad not all of us can compensate equally in technicall manner... Perhaps a bottle of vodka huh?

[Duk]

A bit more 'maybe helpful' info. The Holden Commondore use a decent size CV joint in the earlier models (VL-VS I can confirm) tailshafts, so there is finally a potential use for those cars .

So Mats, from what you're saying, a driveshaft can be built using only CV joints with no negatives? Is there any real requirement then to make it a 2 piece shaft if a suitable section can be made into a 1 piece to clear the gear lever?

[Mats]

Well the reason for Alfa to make a hardy/Guibo solution in the first place is NVH, it will probably make a not so lovely noise in certain rpm intervals (as MD found out first hand). I would probably not go all-in on this solution on a street car.
The solution I'm looking at is on the limiton therms of torsional stiffness, on a V6 you need to keep the revs down (as in under 7k) or have a very large diameter front shaft. There is no way you can go one-piece shaft unless you can get a composite shaft. That would drive a change in the shifter as you understand.

[Duk]

Cheers Mats.

But I'm not seeing how or why a 1 piece shaft can't be used. I'm thinking you are talking from a practical production point of view to allow the narrow section for the gear lever. Yay or nay?

Would 1 single CV joint (+ 1 rubber coupling) have enough thrust movement capacity to allow for what ever thrust movement occurs between the engine and 'box?

[Mats]

Bending and torsional frequencies (if steel), it will basically become like a big jump rope and hit the tunnel or gear lever over a certain rpm.
And to have a very slim section on the middle of the shaft like that is basically the worst thing you can think of on a slender pipe like that (and not possible to produce in the composite proposal)

Not fo forget that it is totally unnecessary.

[PietereQ]

Using Mats concept as a guideline, I have had the rear flange manufactured recently, it still needs fabrication though to fit the CVJ

[Mats]

Job well done!

I have my hardware on the way too. Will post pics.

[PietereQ]

Thanks Mats. I have one question though, what is the distance between the flywhell side flange and the cvj flange? I hope pic will clear a bit what I mean:

[Mats]

I can post a drawing after I have verified that it actually works. How does that sound?

[Mats]

Well, the hardware has arrived...

[PietereQ]

WhawaWheeewa Do i recon correctly it's universal for 4cyl and 6cyl as well?