Project 914 1.8T, Some pics of the conversion... Options

[fiid]

What does the audi gearbox output shaft flange look like. I am wondering if it's possible to make an adaptor that works like a 5-lug bolt on spacer....

[914_1.8t]

What does the audi gearbox output shaft flange look like. I am wondering if it's possible to make an adaptor that works like a 5-lug bolt on spacer....

It is very similar in size (diameter) of the 911 Stub Axle. I'll have to take the measurements but it's very close.

And yes, that exactly what I want to do...make a spacer/adapter.

[914_1.8t]

The axle overall length is 23 1/2"
The outer CV face to face is 18 15/16"
Not sure if these are 911, maybe others can confirm.
Felix

hmmmm.....if I remember my measurements, i need a length of 18 1/4" on one side and 20" on the other (CV face to face).

ok...lets see...if i move the engine over .87" that means that that the axles would fit. That leaves me with only about 1/4" on each side for an adapter (IMG:style_emoticons/default/headbang.gif) I'll re-measure tonight.

I wonder if I can just (IMG:style_emoticons/default/welder.gif) the axles onto the trans or retap the stub axle on the audi transmission to have the 911's bolt right in <_<

[neo914-6]

I take it you don't have axles yet. You can borrow mine for trial fit (just don't weld them) (IMG:style_emoticons/default/ohmy.gif)
Felix

[Series9]

(IMG:style_emoticons/default/welder.gif) TIG is 80,000 psi. That should do it.

...replacement might be a hassel.

Joe O'

[914_1.8t]

I take it you don't have axles yet.  You can borrow mine for trial fit (just don't weld them)  :o
Felix

Thanks...i'd appreciate that...having a set will help to determine what the best thing to do do is.
I'll give you a call tomorrow.

[Chris914n6]

The RH adaptors are steel, something special that I don't remember the number to, but 1032 comes to mind. High carbon and slightly springy.
If you only need 1/4" then it doesn't really matter much, if you can use longer bolts and redrill the outputs.

Curious how much of the trunk needed cut or did I miss a pic?

[andys]

The axle overall length is 23 1/2"
The outer CV face to face is 18 15/16"
Not sure if these are 911, maybe others can confirm.
Felix

hmmmm.....if I remember my measurements, i need a length of 18 1/4" on one side and 20" on the other (CV face to face).

ok...lets see...if i move the engine over .87" that means that that the axles would fit. That leaves me with only about 1/4" on each side for an adapter (IMG:style_emoticons/default/headbang.gif) I'll re-measure tonight.

I wonder if I can just (IMG:style_emoticons/default/welder.gif) the axles onto the trans or retap the stub axle on the audi transmission to have the 911's bolt right in (IMG:style_emoticons/default/dry.gif)

If your Audi transaxle has the bolt holes contained within the ring on the output flange, then it might fit the later 108mm Prosche CV. The Audi has six bolts, and uses no pins such as on the P stuff, AFAIK. This would be on the late model 012 5 speed Audi transaxle. Is that the one you have, or do you have the model 016 5 speed? If you have the 911 CV available for match-up, that would be best....Let us know. The Audi/Getrag 6 speed has a different flange, as pictured below

Andy

[914_1.8t]

The axle overall length is 23 1/2"
The outer CV face to face is 18 15/16"
Not sure if these are 911, maybe others can confirm.
Felix

hmmmm.....if I remember my measurements, i need a length of 18 1/4" on one side and 20" on the other (CV face to face).

ok...lets see...if i move the engine over .87" that means that that the axles would fit. That leaves me with only about 1/4" on each side for an adapter (IMG:style_emoticons/default/headbang.gif) I'll re-measure tonight.

I wonder if I can just (IMG:style_emoticons/default/welder.gif) the axles onto the trans or retap the stub axle on the audi transmission to have the 911's bolt right in (IMG:style_emoticons/default/dry.gif)

If your Audi transaxle has the bolt holes contained within the ring on the output flange, then it might fit the later 108mm Prosche CV. The Audi has six bolts, and uses no pins such as on the P stuff, AFAIK. This would be on the late model 012 5 speed Audi transaxle. Is that the one you have, or do you have the model 016 5 speed? If you have the 911 CV available for match-up, that would be best....Let us know. The Audi/Getrag 6 speed has a different flange, as pictured below

Andy

Not sure which one I have...it's out of a 99 Audi A4 FWD tranny.

Raxles's mentioned that there is a difference, I believe he said the porsche is 108mm and the audi is a bit smaller (100mm maybe) so that is the reason he could not make me an axle. And you cannot mix-n'-match audi CV with porsch 1.8mm CV because the number of splines on the axle rod are not the same. He could not locate any axle rod with the combination of the porsche and audi splines, it has to be custom made and that's very expensive.

I don't have a pic of my tranny handy....here's a pic of a quattro tranny...but the axle mounting is the exact same:

[fiid]

This looks totally do-able. The 911 driveshafts are shorter than the 914 ones too - so that will even buy you a little space. Damn. I'm going to have to get a setup like this. Does Audi have a 6-speed box????

[914_1.8t]

This looks totally do-able. The 911 driveshafts are shorter than the 914 ones too - so that will even buy you a little space. Damn. I'm going to have to get a setup like this. Does Audi have a 6-speed box????

They have 6spd quattro tansmissions...infact the pic is of 6spd.
I believe you can use just the 2wheels via axles and leave the back disconnected.

Ok...another option (maybe).
I have heard that the early boxster trans is identical to the audi fwd 5spd trans, wonder if I can switch part number 5 for the following two diagrams. I belive the boxter trans is 108mm and would bolt 911 axles/CV's. Can anyone verify this.

I wonder how I can find out the number of plines for #5's of both the below?

[914_1.8t]

Audi Trans:

[914_1.8t]

Boster trans:

[914_1.8t]

Another of boxster trans:

[914_1.8t]

try again:

By the way, does anyone have a pic of the boxster trans?

[fiid]

A quattro tranny would work if you freeze (weld?) the front-rear diff. I need to go to pick-n-pull and look at subaru trannies.

You probably want to get solidworks or something and start working on a design for this peice....

[andys]

They have 6spd quattro tansmissions...infact the pic is of 6spd.
I believe you can use just the 2wheels via axles and leave the back disconnected.

Ok...another option (maybe).
I have heard that the early boxster trans is identical to the audi fwd 5spd trans, wonder if I can switch part number 5 for the following two diagrams. I belive the boxter trans is 108mm and would bolt 911 axles/CV's. Can anyone verify this.

I wonder how I can find out the number of plines for #5's of both the below?

The Quattro 6 speed has a hollow secondary shaft that the pinion shaft runs through. Wouldn't recommend it for high HP applications, but in your case it's probably not an issue. They are coupled together by a Thorsen for front to rear bias. There have been some that have considered locking the two shafts together to get a front drive only output, but the idea was shelved (can't recall exactly why).

Here's a pic of the boxster transaxle:

Andy

[neo914-6]

Sonu,

Your Audi output flanges must be 108mm to fit the 911 CV's. My Boxster 5 flanges are ~102mm. I will either try to fit standard 914 CV's or see if the larger flanges are interchangeable...