Corvette C5/C6 transaxle in a high horsepower GTV6 - Page 6 - Alfa Romeo Bulletin Board & Forums

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post #76 of 100 (permalink) Old 03-06-2017, 09:07 AM
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One can see why the Corvete C5/C6 transaxle was chosen to be installed. Bolting in a stronger gearbox is much easier than performing R&D on the Alfa one.
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post #77 of 100 (permalink) Old 03-06-2017, 12:26 PM
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What I see as problem with the Corvette solution is the approval part. Seen from here there are regulations for what you can do with a car which will apply.

Just changing the gearbox I think would pass without a question here.

However if you change the whole suspension as well, even with different pick up points than the ones made for this from the factory, it could result in banning from road use. Even in racing its not allowed to use different pick up points than factory. Unless original pick up points no approval for racing! So such a modification could result in a car that would be not allowed for the road or racing even.

So first thing would be to ask if such a modification had a chance for approval for road or racing even. If not better not to invest your money!

However there are specialists who can do whatever with a car and pass under the radar of the legislation and rules differ from country to country, so I dont say its impossible: What I say is check first if the car can be used for something, legally after the rebuild!

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post #78 of 100 (permalink) Old 03-17-2017, 01:44 PM
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An now Just for fun:

A GTV 8 look alike drag race car with 7,5L and 1000Hp making 8,8 sec on the 1/4 mile. Actually looking modest compared to a Funny car. But still impressive what the Swiss guys have accomplished with this car! Possibly they know what gearbox can handle big Power?


G.
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post #79 of 100 (permalink) Old 03-17-2017, 11:22 PM
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Now you're just being stupid..................

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post #80 of 100 (permalink) Old 03-18-2017, 12:48 AM
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Quote:
Originally Posted by Gabor K. View Post
An now Just for fun:

A GTV 8 look alike drag race car with 7,5L and 1000Hp making 8,8 sec on the 1/4 mile. Actually looking modest compared to a Funny car. But still impressive what the Swiss guys have accomplished with this car! Possibly they know what gearbox can handle big Power?

G.
Interesting how forward they have mounted the engine ...

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post #81 of 100 (permalink) Old 03-18-2017, 08:45 AM
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This thread was started to show a corvette transaxel can be fitted to A GTV6. After all the hubbub and dreaming about "other" transaxels...Is our man making any progress?
I for one hope to see some results.

Just sayin....
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post #82 of 100 (permalink) Old 03-18-2017, 10:14 AM
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Quote:
Originally Posted by alfettaparts2 View Post
Here is a list of front engine rwd transaxle road cars. Good luck
1963–1968 Ferrari 330
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post #83 of 100 (permalink) Old 03-18-2017, 02:09 PM
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Originally Posted by Gatso7 View Post
This thread was started to show a corvette transaxel can be fitted to A GTV6. After all the hubbub and dreaming about "other" transaxels...Is our man making any progress?
I for one hope to see some results.

Just sayin....
This thread was started by asking if the Corvette or other transaxles could be used.

No Corvette transaxles have been installed but other solutions have been used and still other solutions are under way. So I have been looking at other solutions which are also possible.

Then cheer up guys, You understand the concept of just for fun? With regards to the video!

G.
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post #84 of 100 (permalink) Old 03-18-2017, 07:44 PM
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Then cheer up guys, You understand the concept of just for fun? With regards to the video!
G.
Most of us do Gabor. Apparently for at least one it has to be serious.

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post #85 of 100 (permalink) Old 03-18-2017, 09:54 PM
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Most of us do Gabor. Apparently for at least one it has to be serious.
The pr!ck! Drunkenly ruining it for everyone!

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post #86 of 100 (permalink) Old 03-19-2017, 08:23 PM
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Originally Posted by Gabor K. View Post
This thread was started by asking if the Corvette or other transaxles could be used.

No Corvette transaxles have been installed but other solutions have been used and still other solutions are under way. So I have been looking at other solutions which are also possible.

Then cheer up guys, You understand the concept of just for fun? With regards to the video!

G.
Most of the solutions seen so far are pretty advanced and expensive. But then again a proper gearbox usually costs a lot due to its complexity. Too bad no one has been able to strengthen the existing internal bits of the current transaxel for the folks that don't need 500HP or more to the point 40% more torque (which would be the real killer anyway.)

I used to own a Lotus esprit and can tell you that the updates to the Renault UN1 transmission are very high priced considering you are buying only three pieces to cure most of the gear breakage issues. Hell the G280 on my M6 is a nightmare with the synchros as well and the only way to really make it affordable to service in the future is to swap the internals to a G265. Interestingly, to do that its more cost effective than buying the strengthened pieces for the Lotus!
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post #87 of 100 (permalink) Old 03-19-2017, 11:05 PM
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pics

Here are a couple of photos from the historic racing on the weekend.
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post #88 of 100 (permalink) Old 03-21-2017, 02:06 PM
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Nice photos of transaxles there, but in this context, like GTV and the de Dion axle, this version of the Hewland gearbox cannot be used because there should be nothing after the differential to clear the de Dion tube on the GTV. However there are other version of the Hewland which could fit, just the price is so forbidding that its normally out of the question.


Then we have Margaritis Racing, who are into drift racing with a 75 Milano. They are from Greece but lately also racing in California. Reason I am bringing them up is that they are now claiming 600 wheel Hp on the 75 drift car and one can wonder how they do it. Last time I saw they had real problems with a ruined original differential in the Alfa gearbox. Obviously it seems they have solved this problem as they are still there with 600 WHP. Understandably asking for support. Can understand that, as its so expensive to race at that level away from home! Anyway would be interesting to see how the solved the gearbox problem!

G.


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post #89 of 100 (permalink) Old 03-22-2017, 04:28 PM
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hmmm

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Originally Posted by Greg Gordon View Post
Nope, nobody I know of has swapped in a Corvette transaxle. At a glance it doesn't look possible without some major surgery. It's probably quite a bit heavier, the Alfa unit is actually pretty light for a transmission/differential, clutch unit, and flywheel, at least one that can handle that much power.

There are very few 350+ horsepower transaxle cars, of those a high percentage of them use front mounted gearboxes.

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So, I guess from the very beginning,, Greg's post to this thread stand to be the "bench mark" so to speak?

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post #90 of 100 (permalink) Old 03-23-2017, 12:35 PM
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So, I guess from the very beginning,, Greg's post to this thread stand to be the "bench mark" so to speak?
Yes, agree with the first part regarding the Corvette gearbox, major surgery etc. It will not be an Alfa ny more without the Alfa de Dion suspension.

With regards to the second part I dont agree as I showed above a lot of transaxles from europe that have more than 350Hp, Maserati, Aston Martin, Ferrari. Even the Nissan GTR has a transaxle with 4WD. Problem is that size could be too big to fit and also too expensive!

Therefore an orignal gearbox reworked to hold 600Hp and 6-700 Nm would be the best solution.

Therefore the Margaritis project above with 600Whp is interesting to find out about! Question is did they actually upgrade their gearbox or are they breaking one box per race??

Californians could approach him on race there and ask!


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