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daywilmOffline
Post subject: Audi Transaxle  PostPosted: Apr 14, 2014 - 11:29 PM
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So I've reached the point where I need to source a transaxle and I've read every post i can find on here. There seems to be a lot of different opinions but I'm inclined to go with the Audi and add Jim Dinner's "fix" since he seems to have had luck with it. My question is, still which Audi transaxle is best. I think I have located an AAZ from a 1988 Audi 5000. Is this a good choice? Will it require the same "fix" Jim did to his 016?

I'll also be happy to consider other economical substitutes that others have had luck with.

Thanks.
 
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lambo1Offline
Post subject:   PostPosted: Apr 15, 2014 - 01:25 AM
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Hi Daywilm, yep the aaz is what you want, it should be a 3.89 final not a 4.11 like other 016, it mainly came in the diesel car, and yes I would install jims mod
my box is an AAZ and has these numbers on the black cast iron section on the rhs viewed from the rear 016 301 211D and a large D for diesel below the numbers it also has AAZ and a serial number on the flat section on top of the bell housing.
 
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daywilmOffline
Post subject:   PostPosted: Apr 15, 2014 - 04:05 PM
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Thanks Lambo1. I was leaning towards the AAZ and it is nice to know someone has successfully used one.
 
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jdinnerOffline
Post subject:   PostPosted: Apr 16, 2014 - 01:46 AM
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I have used almost every type as I went through 4 transmissions in my discovery of the problem. Any Audi 5000 016 will do the job and you will get 'familiar' with the ratio and it won't upset or bother you over time.
My current setup in the 6.0 is a (no idea what model 016 I have) reliable and dependable unit that can be shifted into 5th gear at 100mph and will pull hard until I become afraid.....lol.

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daywilmOffline
Post subject:   PostPosted: Apr 16, 2014 - 01:46 PM
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Thanks for the input Jim. As you can tell, I've given up on placing the engine in the OEM position. The NAERC frame was just not designed for it. Especially using the monster V12. Using a V8 would be easier but in the end there were just too many obstacles to overcome for me. If you ever decide to build another Lambo, you should try it. With your skills I'll bet you could get 'er done.
 
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AdrianBurtonOffline
Post subject:   PostPosted: Apr 16, 2014 - 07:12 PM
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Dinner used a NAERC chassis on his 6.0 V12 build

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daywilmOffline
Post subject:   PostPosted: Apr 17, 2014 - 04:24 AM
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AdrianBurton - yes, I know, and I'll be copying a lot of what Jim did now that I've decided to use a transaxle instead of putting the engine backwards like the real Diablo. KevKev did it using a stretched fiero and a V8 but with the big V12 and the narrow drive tunnel and engine bay of the NAERC frame it just got to be more than I could deal with. I've been working on this for about four years now and been able to tackle every problem that has come up, but this one ate my lunch. I hated to give up, but I was stuck so I've done a 180 (literally) in the name of making progress.
 
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lambo1Offline
Post subject:   PostPosted: Apr 17, 2014 - 06:49 AM
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hi daywilm, can you give details as to why you gave up, I spent 3 yrs trying to do the same, i started with a lexus v8 with the transaxel at the rear of it I got the drive from the back of a audi Quattro transaxel up the side of the lexus v8 through a transfer case into the tunnel but ran out of ideas when I discovered the drive to the front diff appeared to be running backwards, after I gave up someone suggested flipping the front diff doohhh why didn't I think of that lol, I think I tried it but it still seemed to go the wrong way so I gave up. But I would be interested in how you tried and what you used, my car is still incomplete but the lexus looks like it will become a BMW v12 from two old bmrs dumped in my driveway. and i still nope to make it AWD
 
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AdrianBurtonOffline
Post subject:   PostPosted: Apr 17, 2014 - 03:06 PM
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lambo1

if you flip the diff upside down it will give you forward motion.

I do have one question, had you thought of how to deal with the power output bias? with the drivertrain reversed you will have more power goint to the front wheels.

I am not sure why no one had used a divorced transfer case to get AWD

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lambo1Offline
Post subject:   PostPosted: Apr 17, 2014 - 11:00 PM
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Hi Adrian, I believe the Quattro box produces a 50/50 split of power, and when required the torson diff moves the power where it is needed, the other concern I had was the larger tyre circumference size on the rear I calculated the torsen would be turning at 1 rev per 100km so at 100 that would not be a big deal, probably the biggest reason I put the 4wd on hold was the packaging, It was extremely hard to find room in the front of the car, with the extra diff the axels etc from what I remember it was almost impossible to get the axel out to the wheel without it hitting the shock in a double A arm config.as the wheels turned through their lock, but I have not given up on the concept.
I guess the 4wd is not easy to achieve besides a lot of the owners of Murchie's were removing the front drive as they were saying the car was much better to drive as rear wheel drive.
My daily driver is a Mitsi gto 4wd twin turbo and there is no way I would ever go back to a 2wd car after having owned the mitzi for 14 yrs so I haven't given up the Countach 4wd concept.
 
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daywilmOffline
Post subject:   PostPosted: Apr 18, 2014 - 03:10 AM
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lambo1 -- While trying to build the OEM configuration (I was only trying for rear wheel drive and not 4-wheel) I encountered a multitude of issues relating to finding space. I expected things to be tight but there were places where it was going to be impossible without major changes to the chassis. The final straw was trying to place the diff. I has to sit so far to the left to clear the engine that it put the left output flange outside the main frame. It sat too high (couldn't lower it without a major change to the frame right where the lower a-arm attaches) and so far to the left that the left wheel axle was going to be freakishly short. I didn't think it would work well being so short. That, along with everything else I was faced with and I bailed. I hated to do it. I don't like giving up, but I'm looking at it as just changing direction.
 
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AdrianBurtonOffline
Post subject:   PostPosted: Apr 18, 2014 - 04:14 PM
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lambo1 wrote:
Hi Adrian, I believe the Quattro box produces a 50/50 split of power, and when required the torson diff moves the power where it is needed, the other concern I had was the larger tyre circumference size on the rear I calculated the torsen would be turning at 1 rev per 100km so at 100 that would not be a big deal, probably the biggest reason I put the 4wd on hold was the packaging, It was extremely hard to find room in the front of the car, with the extra diff the axels etc from what I remember it was almost impossible to get the axel out to the wheel without it hitting the shock in a double A arm config.as the wheels turned through their lock, but I have not given up on the concept.
I guess the 4wd is not easy to achieve besides a lot of the owners of Murchie's were removing the front drive as they were saying the car was much better to drive as rear wheel drive.
My daily driver is a Mitsi gto 4wd twin turbo and there is no way I would ever go back to a 2wd car after having owned the mitzi for 14 yrs so I haven't given up the Countach 4wd concept.


That is part of the reason why I think the divorced transfer case works better.

When it comes to the axlel hitting the shock, look at mounting it above the upper control arm like in the Diablo and Murci. One of the big reasons for removing the front diff is the push introduced by the extra power going to the front wheels

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deweyOffline
Post subject:   PostPosted: May 06, 2017 - 11:20 PM
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Looks like your build is coming along.

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AdrianBurtonOffline
Post subject:   PostPosted: May 08, 2017 - 05:14 AM
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Slowly Dewey Slowly

How have you been???

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