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  Topic Review (Newest First)
06-14-2019 06:29 AM
exigegus I think think the backset of the axles is totally inappropriate if I am looking at it correctly
06-14-2019 02:59 AM
Erik L Check this out. Its pretty long but I wonder. I never looked at a picture of one carefully.

I think the companies that work on these can do almost anything with them to them - tons of options.

https://www.corvetteforum.com/forums...k-package.html

This example is an expensive track version but I think run of the mill units are cheap.

hmmmm I would think that if this was an option the kit car crowd would use them. Maybe they are just too long?
05-29-2019 05:11 PM
Erik L
Quote:
Originally Posted by ragingfool35 View Post
here is Donzi's setup
That makes me weak in the knees
03-07-2019 08:36 AM
Erik L The problem with the air cooled transmissions I think is that they are very expensive and getting more rare. I think you can buy a boxster trans for $1500? A rebuild able G50 is probably north of $7K - rebuilt over $10K?
03-07-2019 04:57 AM
MRDANGERUS
Possibility: Porsche G50/52 ?

Food for thought only:

How to shorten G50 tranny, details:
Converting long G50 into short g50 - Pelican Parts Forums
.
http://slc-wiki.squarespace.com/porscheg50
'
The G50/52 gear box from the later 964 could take 360HP and I can imagine some tuner taking it to 400HP. Each new version of the G50 was improved on from the 1987 which in 88 got a new fork etc.
many of them are being put into midengine kits cars like the FF GTM Mulsanne or the Ultima. For midengine, the gearbox needs to be inverted to run the other way around. It requires moving the drain and vent to the opposite side of the gearbox. Also, if the gearbox has a pump and internal oiling it also requires moving the pickup of the pump to the opposite side as well.

The other modification is a hefty billet side cover, which even on the turbo and other 9" ring gear boxes is nice to have.

Spec for G50/52
964 (965) Turbo 1991-94

5-speed fully-synchronized transaxle

Manufactured by Getrag

Plate-type limited-slip differential available

Rod shift

Single-plate clutch

Gear ratios:

1st gear: 3.154

2nd gear: 1.789

3rd gear: 1.269

4th gear: 0.967

5th gear: 0.756

Ring and pinion: 3.44, 9" ring gear
10-21-2018 06:26 PM
MRDANGERUS
Quote:
Originally Posted by Foxedupone View Post
The 2 workable solutions for someone to actually offer a kit for Esprits to replace a UN1, rather then each person having to custom fabricate a solution each time are:
Option 1 the cheap, plentiful and robust enough for this application is the Audi FWD 6 speed boxes.

Option 2 is making the Boxter gearbox work in here. Way cheaper then the vintage Porsche options previously used. Plentiful enough and already designed to be mid engined transaxle. Can handle the power, upgrades available, lots of clutches etc...

Whoever offers the first bolt on kit for either of these options would result in a bunch of orders at first and then a continuous stream of ongoing ones as the years went on.
How about 2005 Porsche 911 Carrera 3.6 RWD 997 Manual 6 Speed Transmission G97.01 ?
Anyone?

.
05-17-2018 08:20 PM
RevJerry [QUOTE=Beerman;5774705]Only question here is how much are you willing to spend???

1. Audi - tends to be the least expensive. Sub $5K for a workable 6 speed 01e, for example. Good for up to 450hp/tq with reasonable treatment. Scott at Advanced Automotion can pull this together for you. Advanced Automotion

2. Porsche - more expensive. Sub $8K-10K for a workable 930 box. Good for a chunk more hp/tp than the "breathed on" 01e (perhaps 500-550).

3. Others - quite expensive. ZF seems to be the most commonly available with good parts supply and some repair/support. Most of these options are in the $10K-20K+ range.

It's easy to talk a big game about how this or that transaxle can easily handle big HP....right up until you have to write a $15K check for one.

Who here has paid $15K+ for a transaxle?[/QUOTE---------------------------
I know this isn't the right place to put this, but I couldn't find how to post a new question. I have a Vixen RV that uses a Renault UN-1 Transaxle, having a 4.11 final drive. Mine blew up and I cannot find another one. Is there another transaxle I can use in my Vixen? It must be rear engine/pusher configuration, not mid-engine. My new "built" BMW engine stripped out the ring and pinion and blew 5th gear right out the back case. Any help would be highly appreciated. [email protected]
04-09-2018 04:05 PM
Foxedupone
WHAT TRANSMISSION COULD REPLACE UN1 ?

The 2 workable solutions for someone to actually offer a kit for Esprits to replace a UN1, rather then each person having to custom fabricate a solution each time are:
Option 1 the cheap, plentiful and robust enough for this application is the Audi FWD 6 speed boxes.

Option 2 is making the Boxter gearbox work in here. Way cheaper then the vintage Porsche options previously used. Plentiful enough and already designed to be mid engined transaxle. Can handle the power, upgrades available, lots of clutches etc...

Whoever offers the first bolt on kit for either of these options would result in a bunch of orders at first and then a continuous stream of ongoing ones as the years went on.
04-05-2018 08:15 AM
Beerman Only question here is how much are you willing to spend???

1. Audi - tends to be the least expensive. Sub $5K for a workable 6 speed 01e, for example. Good for up to 450hp/tq with reasonable treatment. Scott at Advanced Automotion can pull this together for you. Advanced Automotion

2. Porsche - more expensive. Sub $8K-10K for a workable 930 box. Good for a chunk more hp/tp than the "breathed on" 01e (perhaps 500-550).

3. Others - quite expensive. ZF seems to be the most commonly available with good parts supply and some repair/support. Most of these options are in the $10K-20K+ range.

It's easy to talk a big game about how this or that transaxle can easily handle big HP....right up until you have to write a $15K check for one.

Who here has paid $15K+ for a transaxle?
04-05-2018 02:07 AM
ragingfool35 here is Donzi's setup
09-13-2017 04:09 AM
Roboto Esprit Hey I been looking. I might have an audi 5 speed box sorry not the six back home I pulled out of a fwd for my old a6. The thing is pretty darn short. Ill see if its still at the shop. If its there Ill have the guy measure it as well as get rid of my old rover block sitting under his bearing press.
I really was hoping to see more info on the quaife as I was thinking about that route. Im already tired of the cables not
performing like a solid ink set. I keep missing first gear. A shift gate would solve all of my isseues but I hate the fact that I have a super car with a 5 speed and a b rated set of materials. If it blows Ill let you guys know what I can make fit as I cant afford to have the esprit down for long.
Ill call my buddy tonight on what box it is and the lenght. you can pick em up for like 500$


Any takers on either make me an offer. low is fine.
08-17-2017 10:42 AM
MRDANGERUS We all need desperately a 350HP/300 lbs-ft replacement for C35 transmission...
Perhaps one of these would fit the bill?

https://californiamotorsports.net/pa...-specification

Need some fresh eyes.
?
08-15-2017 05:52 AM
MRDANGERUS Here are specs for 6 speed Boxter, limited to 300HP, though

https://californiamotorsports.net/pa...specifications

and some polarized opinions 5 vs 6 speed pros/cons - 986 Forum - for Porsche Boxster Owners and Others
08-01-2017 05:47 AM
MRDANGERUS
Quote:
Originally Posted by Beerman View Post
Yes, the 016's are all the same except for ratios. There are certain 016's which have much better ratios than others. The one I have is coded AAZ which is a pretty good ratio set.

Yes, it's a beefy transaxle, particularly with an LSD installed. My 331 SBF has about 400 hp and 400 tq. It should be fine so long as there's no drop clutch burn out starts.

Yes, selector shaft is on the left. I have a shifter mechanism from a GT40 replica which uses cable shift so I'll have to run cables to the left of the 016. Shouldn't be too tough.

I'll be using 930 porsche CVs and modified axles - should be plenty tough enough. The 930 CV's have a good range of useable motion.

I'll keep things posted here as the project moves forward
??? Any updates on your project???
07-30-2017 11:21 AM
MRDANGERUS I think it's prudent to re-start the discussion w/info on gear ratios.

FYI: http://www.mendeolatransaxles.com/about-us.html

.
06-25-2016 02:16 PM
snowrx After measuring my spare Subaru 5-spd, I see the axle to tailpiece dimension is 26"+, which would put the shift linkage exiting about in the middle of my rear valance, and the existing mounts well to the rear of the Lotus chassis loop. Not even close.....
03-30-2016 10:02 AM
snowrx The later Subaru 6 speeds seem to survive behind 400+hp STi motors, but I wonder what life is like with all the torque going through only one diff/ring & pinion set. We'll have to keep our eyes on the 818 crowd as they start to throw the easy power at their new toys. A big plus would be the ready availability of these units, and parts!

This reminds me that I forgot to drop my old WRX short block & transaxle into my Esprit engine bay for a test fit while the 910 was out. CRS
03-29-2016 12:19 PM
Vulcan Grey There's a guy here in CO who owns a Lotus Sport 260, who runs a Subaru transmission specialty shop. I talked with him a bit about modifying a subaru transmission for an Esprit.
03-29-2016 11:20 AM
petemon Happened to run across this while randomly searching the interweb. Not looking to swap mine at this point but thought someone might find it interesting as I've never seen anything about a Subaru transmission swap.


Design - Factory Five RacingFactory Five Racing
https://www.factoryfive.com/wp-conte...Conversion.pdf

These guys apparently modify Subaru running gear as a replacement for VW rear-engine apps...
Subarugears

I love how the guy from subarugears.com hacks the center differential case apart with an angle grinder.
08-23-2015 07:00 AM
MRDANGERUS Stuart,

Any updates on the project?

Porsche 987 987c Cayman S Manual Transmission looks pretty compact to me, but the bell housing is POA.

OAL is 27.5" give or take an 1/8"

Bell housing flange surface to output flange centerline is 6.7"

There is no low hanging differential sump either( flat bottom) so clearance below it is non-issue

Some of the specs for a Cayman S g87.21 from caymanclub.net forum:

1st 3.308
2nd 1.950
3rd 1.407
4th 1.133
5th 0.972
6th 0.822
final 3.875

70 mph w/26" tire gives 2882 rpm in 6th.
158 mph @ 6500 rpm

LSD-s are available for this tranny, too.
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