G
Guest
Guest
What car was the Audi transaxle used. What prices has anyone paid or seen? Going to order a RF this spring and want to get everything ligned up.
G
Guest
Guest
Wayne
Are you going to have any work done to the trans? Or do you just clean it up and toss it in?
MikeD
Are you going to have any work done to the trans? Or do you just clean it up and toss it in?
MikeD
I'm going to pull the diff side cover and end cap and look at the condition of the internals. I'm looking for a 3Q trans as it has one of the widest ratio spreads. The table show the max speed in each gear(@6500rpm) and 70 mph cruise
The 3V is what is in the car right now.
Final 3.89
First 3.60 35.67
Second 2.13 60.29
Third 1.46 87.96
Fourth 1.07 120.02
Fifth 0.83 154.73mph
70mph RPM 2943.37rpm
The 3Q
Final 5.22
First 2.84 33.70
Second 1.52 62.96
Third 0.90 106.34
Fourth 0.64 149.54
Fifth 0.48 199.38mph
70mph RPM 2284.17rpm
[ December 20, 2001: Message edited by: Wayne Presley ]
The 3V is what is in the car right now.
Final 3.89
First 3.60 35.67
Second 2.13 60.29
Third 1.46 87.96
Fourth 1.07 120.02
Fifth 0.83 154.73mph
70mph RPM 2943.37rpm
The 3Q
Final 5.22
First 2.84 33.70
Second 1.52 62.96
Third 0.90 106.34
Fourth 0.64 149.54
Fifth 0.48 199.38mph
70mph RPM 2284.17rpm
[ December 20, 2001: Message edited by: Wayne Presley ]
G
Guest
Guest
What audi vehicle was this transmission used in? Good news that they are pretty cheap. How do you tell the difference between the different ratios looking at the tranny?
G
Guest
Guest
I also got mine at a pick and pull type place. I bought two for $79.00 each. The most common in the US is the 5N and AAZ. The 5N has pretty good ratios but has a 4.11 final drive. The AAZ has 3.89 but lower gearing. I bought a 5N out of a Audi 5000 and the other trans was out of a 944 Porsche. The Most 944's have the 3.89 which I put into the 5N. This gives a very good gearing. The 3Q would be the best but you might have to look in europe for one unless you can find a Audi Turbo diesel with a manual trans which is your best shot at finding the 3Q The Audi 100 is the same but latter car. You need to make sure that the 100 has the 016 type.
Guys, Just curious, for those building left hand drive cars, are you going with a center shift, or putting it on the left hand sill??? My GTD is left hand drive and we are fitting a left hand solid linkage direct to the transaxle with one universal joint. Properly adjusted, it will have no slop. This decision was made after crawling over many GT40 replica in the UK this past spring and listening to comments about how well the upgrade to solid linkage performed. So many are moving to solid linkage, that at this point, they are being commercially produced for GTD right hand drive cars. Brian
Robert Logan
Defunct Manufactuer - Old RF Company
To 351 SVO,
The gearbox we use in our cars is as said by many in this thread, the Audi CD 5000 ( in Europe Audi CD100 ). The boxes available in this model vary considerably and have side and rear gear changes and are available in both 4 and 5 speeds.
To be more acurate we use the Audi O16 gear box which is a side change and 5 speed. The O16 markings are found on the right hand side of the box just behind the diff access plate. The ratios and the build date are found on the top of the bell housing. The first 2 or 3 alfa numerics indicate the ratios and the LAST 5 numbers are for the date - DD MM Y ( 1980 something ).
To correct something Bob Lawrence posted, or at least explain the full story, the Porsche 944 gearbox is very similar in construction but CAN NOT be used without large modifications. There is NO facility for a clutch, NO spline, NO slave cylinder, NO clutch fork. The internals are very similar and I think interchangable but we have not confirmed this. The fifth gears would be good ( overdrive) but an expensive option.
The good thing is that I believe that all the CD5000 imported into the US had the O16 gearbox but only AAZ and 5N. the other boxes were used in Europe. Please confirm if anybody out there Knows !!!!!
At Roaring Forties we already have a LSD available for the O16 and will shortly be able to offer road / race converted boxes with different gear sets (not diff ratios). This box is intended for up to 500 HP cars.
I hope this clears up your questions.
Best wishes to all, have a Happy and Holly Christmas and a Peaceful NEW Year.
Robert Logan
President
Roaring Forties
The gearbox we use in our cars is as said by many in this thread, the Audi CD 5000 ( in Europe Audi CD100 ). The boxes available in this model vary considerably and have side and rear gear changes and are available in both 4 and 5 speeds.
To be more acurate we use the Audi O16 gear box which is a side change and 5 speed. The O16 markings are found on the right hand side of the box just behind the diff access plate. The ratios and the build date are found on the top of the bell housing. The first 2 or 3 alfa numerics indicate the ratios and the LAST 5 numbers are for the date - DD MM Y ( 1980 something ).
To correct something Bob Lawrence posted, or at least explain the full story, the Porsche 944 gearbox is very similar in construction but CAN NOT be used without large modifications. There is NO facility for a clutch, NO spline, NO slave cylinder, NO clutch fork. The internals are very similar and I think interchangable but we have not confirmed this. The fifth gears would be good ( overdrive) but an expensive option.
The good thing is that I believe that all the CD5000 imported into the US had the O16 gearbox but only AAZ and 5N. the other boxes were used in Europe. Please confirm if anybody out there Knows !!!!!
At Roaring Forties we already have a LSD available for the O16 and will shortly be able to offer road / race converted boxes with different gear sets (not diff ratios). This box is intended for up to 500 HP cars.
I hope this clears up your questions.
Best wishes to all, have a Happy and Holly Christmas and a Peaceful NEW Year.
Robert Logan
President
Roaring Forties
Ron Earp
Admin
True Robert, limited in the states to three boxes, all O16s. I definitely know, I've looked high and low. Costs are between $75-500 for the boxes in good shape.
As for other boxes, the 3U is a Europe only consutruction with the diesel motor. I have two 3U boxes, bought them in Germany - but they're still in Germany! I hope to have them shipped over soon, hopefully on my next trip over from the 10-15th of Jan. They have tall ratios, and although I don't plan on outfitting the car from the get-go with one I'll prep it and keep it as a spare. Cost isn't too bad, purchasing and shipping considered. Bob has dibs on the second one I've got if needed.
Want to try one in Gordon's blue car? I think the theoretical top speed was 220 at 6500 RPM if I remember correctly!
Ron
[ December 21, 2001: Message edited by: Ron Earp ]
As for other boxes, the 3U is a Europe only consutruction with the diesel motor. I have two 3U boxes, bought them in Germany - but they're still in Germany! I hope to have them shipped over soon, hopefully on my next trip over from the 10-15th of Jan. They have tall ratios, and although I don't plan on outfitting the car from the get-go with one I'll prep it and keep it as a spare. Cost isn't too bad, purchasing and shipping considered. Bob has dibs on the second one I've got if needed.
Want to try one in Gordon's blue car? I think the theoretical top speed was 220 at 6500 RPM if I remember correctly!
Ron
[ December 21, 2001: Message edited by: Ron Earp ]
G
Guest
Guest
Would appreciate info:
1. Weight G50s to Audi?
2. Length from mounting surface to halfshaft?
3. Overall length G50 to Audi?
Thanx,
Kevin
******
1. Weight G50s to Audi?
2. Length from mounting surface to halfshaft?
3. Overall length G50 to Audi?
Thanx,
Kevin
******
G
Guest
Guest
Interesting to see what people are saying about the Renault V Audi V Porsche gear box comparison.
For comparison below are the gear ratios of the Renault UN1 box
1st 3.364:1
2nd 2.059:1
3rd 1.381:1
4th 1.037:1
5th 0.821:1
final drive is 3.44 or 3.88 but most go for the 3.44 as it reduces cruising rpm. 70 mph is 2140 rpm and 6500 rpm is about 190 mph.
If you use 3.88 or thereabouts as final drive in any box you will be out of 1st gear in no time at all. You may buzz your engine and damage it possibly.
302's etc are more than capable of driving these higher ratios and keeping good acceleration figures. With the above ratios my car rated at 350 bhp at flywheel can do a 4.83 second 0 to 60 mph. Ok for a road going car! Annoyingly when we were measuring this at Silverstone with a radar gun, a motor cylce policman was watching. After some time he cruised very slowly over and asked if he could have a go. Bugger only went and did a 4.5 second run. He smiled and went away!
Looking at other postings I beleive the popular Audi box is from what we know as the Audi 100. Seems to me that this car is as as likely to have 400 BHP as any car Renault produced. No chance. Therefore as a starting point the two boxes start equal. Availablity has to be important and Audi might be more available than Renault in US. Fair enough.
After market upgrading will vary for both boxes. However to me it seems that the Porcshe G50 and its family of boxes offer the best opportunity to go for big BHP. How many Porchse 911's have monster power? Loads do. And there are more box upgrades available to suit individual needs.
One final point. No one has ever reported failure of a Renault box through the longitudinal bolt pattern within our club.
Malcolm
For comparison below are the gear ratios of the Renault UN1 box
1st 3.364:1
2nd 2.059:1
3rd 1.381:1
4th 1.037:1
5th 0.821:1
final drive is 3.44 or 3.88 but most go for the 3.44 as it reduces cruising rpm. 70 mph is 2140 rpm and 6500 rpm is about 190 mph.
If you use 3.88 or thereabouts as final drive in any box you will be out of 1st gear in no time at all. You may buzz your engine and damage it possibly.
302's etc are more than capable of driving these higher ratios and keeping good acceleration figures. With the above ratios my car rated at 350 bhp at flywheel can do a 4.83 second 0 to 60 mph. Ok for a road going car! Annoyingly when we were measuring this at Silverstone with a radar gun, a motor cylce policman was watching. After some time he cruised very slowly over and asked if he could have a go. Bugger only went and did a 4.5 second run. He smiled and went away!
Looking at other postings I beleive the popular Audi box is from what we know as the Audi 100. Seems to me that this car is as as likely to have 400 BHP as any car Renault produced. No chance. Therefore as a starting point the two boxes start equal. Availablity has to be important and Audi might be more available than Renault in US. Fair enough.
After market upgrading will vary for both boxes. However to me it seems that the Porcshe G50 and its family of boxes offer the best opportunity to go for big BHP. How many Porchse 911's have monster power? Loads do. And there are more box upgrades available to suit individual needs.
One final point. No one has ever reported failure of a Renault box through the longitudinal bolt pattern within our club.
Malcolm
Has anyone tried the Quaife unit: http://www.quaifeamerica.com/
Did not see a price, but bet it is expensive. Did not see a torque rating either.
Did not see a price, but bet it is expensive. Did not see a torque rating either.
Quaife is definitely expensive!
A 6 speed synchromesh transaxle with bell
housing and axles is not for the faint-
hearted. $20,390, not including shifter
or linkage. OUCH!!!
Bill
A 6 speed synchromesh transaxle with bell
housing and axles is not for the faint-
hearted. $20,390, not including shifter
or linkage. OUCH!!!
Bill
I also noted that the Quaife 6-speed transaxle appears rather heavy at 83kg (183 lb). And I thought the Tremec T56 I just put in my Mustang was heavy at 120 lb.
Does anybody have any information comparing the dry (or wet) weights of the various transaxles available for the GT40? It would be nice to compare weight along with (estimated) HP/TQ rating and cost when making a decision. I would hope the 183-lb Quaife is at the upper end of the range. I believe the Getrag transmission that the Supra TT uses is rather light at just under 100 lb, and there are Supras running around with 800+ HP on their stock 6-speeds. DOes that mean that the Getrag transaxle is one of the lighter and stouter transaxles available?
Does anybody have any information comparing the dry (or wet) weights of the various transaxles available for the GT40? It would be nice to compare weight along with (estimated) HP/TQ rating and cost when making a decision. I would hope the 183-lb Quaife is at the upper end of the range. I believe the Getrag transmission that the Supra TT uses is rather light at just under 100 lb, and there are Supras running around with 800+ HP on their stock 6-speeds. DOes that mean that the Getrag transaxle is one of the lighter and stouter transaxles available?
Ron Earp
Admin
Mark,
Does the Supra Twin Turbo have a transaxle?
I know they're rear wheel drive, but if they're using a rear mounted transaxle then it will be feb by a torque tube and won't have a provision for a clutch in the GT40 application.
Those were neat cars, powerful too. And, the best part is they can pretty much be had for a song these days, seems the Jap high performance cars don't hold value too well - even if it could compete with supercars of the day.
R
Does the Supra Twin Turbo have a transaxle?
I know they're rear wheel drive, but if they're using a rear mounted transaxle then it will be feb by a torque tube and won't have a provision for a clutch in the GT40 application.
Those were neat cars, powerful too. And, the best part is they can pretty much be had for a song these days, seems the Jap high performance cars don't hold value too well - even if it could compete with supercars of the day.
R
G
Guest
Guest
It is my opinion that the renault trans has the best ratios all the way round. The audi is away too short in 1st gear and rpm,s too high in 5th. I dont believe that you would have any trouble with the sandwich construction of the renault, as this method has been used with all types of industrial gear boxes and electric motors. However the renault and the audi will stand up fine in engines that are 300 to 375 hp. The way I drive they would last forever.
Ron, the MkIV Supra twin turbo uses a classic RWD platform with a 6-speed transmission, driveshaft, and rear-mounted differential. MkIV Supras are actually holding their value pretty well thanks to a bulletproof drivetrain, capability to be modded to ~500 hp for under $2,000, and, of course, The Fast and the Furious, which glorifies the import street racing scene.
The Supra tranny is manufactured by Getrag. They also manufacture the longitudinal transaxles found in new Audis. I mentioned the Supra because I've read a couple references here to Getrag applications in GT40 replicas, and was wondering if the Getrag transaxles that go into GT40s are as light and strong as the Getrag transmission that went into the Supra TT. I note from Getrag's website that they manufacture the longitudinal transaxles for Audis and Porsches. So when GT40 builders refer to Getrag transaxles, are they referring to the Audi or Porsche units or something different?
I'd like to compile as much information as I can about the various transaxles available for GT40s. From what I've learned so far, the options include:
1) ZF
2) Renault
3) Audi
4) Porsche G50
5) Quaife
6) Getrag?
The Supra tranny is manufactured by Getrag. They also manufacture the longitudinal transaxles found in new Audis. I mentioned the Supra because I've read a couple references here to Getrag applications in GT40 replicas, and was wondering if the Getrag transaxles that go into GT40s are as light and strong as the Getrag transmission that went into the Supra TT. I note from Getrag's website that they manufacture the longitudinal transaxles for Audis and Porsches. So when GT40 builders refer to Getrag transaxles, are they referring to the Audi or Porsche units or something different?
I'd like to compile as much information as I can about the various transaxles available for GT40s. From what I've learned so far, the options include:
1) ZF
2) Renault
3) Audi
4) Porsche G50
5) Quaife
6) Getrag?
