Discussion
Mark - I got your e mail but I don't have access to a full keyboard, so I am posting part of my answer here
The big gear kit T5 box I have has the CTS close ratio gear kit with the following ratios:
1st: 2.527:1
2nd: 1.675:1
3rd: 1.259:1
4th: 1:1
5th: 0.87:1
It also has heavy duty ali bronze selector forks.
Details of the kit are here:
http://www.gearboxman.co.uk/infot5.html
My box has done 2 x 45 min races since having a new close ratio gear kit fitted.
If you are putting a lot of torque through the box and you intend using the car for repeated runs down the strip at Santa Pod, I strongly recommend the big gear kit box. Without the drag stuff the normal T5 would be ok, but with it I think you are asking for trouble.
The big gear kit T5 box I have has the CTS close ratio gear kit with the following ratios:
1st: 2.527:1
2nd: 1.675:1
3rd: 1.259:1
4th: 1:1
5th: 0.87:1
It also has heavy duty ali bronze selector forks.
Details of the kit are here:
http://www.gearboxman.co.uk/infot5.html
My box has done 2 x 45 min races since having a new close ratio gear kit fitted.
If you are putting a lot of torque through the box and you intend using the car for repeated runs down the strip at Santa Pod, I strongly recommend the big gear kit box. Without the drag stuff the normal T5 would be ok, but with it I think you are asking for trouble.
GavinPearson said:
I think you need to be aware that the TVR transmissions have always been built in Tremec's factory in Queretaro, Mexico. How do I know? I asked the factory Manager when I went there.
That's fine- there seems to be no noticable difference between the Borg Warner and the Tremec that I know of anyway, unless someone would like to correct me. I'm just saying that I was told by someone from the factory that the new gearboxes were then stripped and rebuilt with stronger gears.
BB-Q would you mind letting me know where you found one for £350? I'm on the hunt for a replacement for my Cerb.
Andy Could mail me how much you are after for any of your many sets pretty please.
There are 2 variants of the T5 for TVR's, Std and Close Ratio. I believe the Tuscan RR cars had the CR boxes and yes I have seen one with my own eyes!
DV or Bell Hill can't remember who I phoned wanted about £650 ish all in. Also Tremecs UK supplier can supply them pretty much new off the shelf. Also there's a chap who makes T5's fit E type Jags and bought a lot of TVR's ex stock (had about 50) and he can supply, again not cheap though. Elite Transmissions I think.
Andy Could mail me how much you are after for any of your many sets pretty please.
There are 2 variants of the T5 for TVR's, Std and Close Ratio. I believe the Tuscan RR cars had the CR boxes and yes I have seen one with my own eyes!
DV or Bell Hill can't remember who I phoned wanted about £650 ish all in. Also Tremecs UK supplier can supply them pretty much new off the shelf. Also there's a chap who makes T5's fit E type Jags and bought a lot of TVR's ex stock (had about 50) and he can supply, again not cheap though. Elite Transmissions I think.
ridds said:
BB-Q would you mind letting me know where you found one for £350? I'm on the hunt for a replacement for my Cerb.
Andy Could mail me how much you are after for any of your many sets pretty please.
There are 2 variants of the T5 for TVR's, Std and Close Ratio. I believe the Tuscan RR cars had the CR boxes and yes I have seen one with my own eyes!
DV or Bell Hill can't remember who I phoned wanted about £650 ish all in. Also Tremecs UK supplier can supply them pretty much new off the shelf. Also there's a chap who makes T5's fit E type Jags and bought a lot of TVR's ex stock (had about 50) and he can supply, again not cheap though. Elite Transmissions I think.
What's a Tuscan RR?Andy Could mail me how much you are after for any of your many sets pretty please.
There are 2 variants of the T5 for TVR's, Std and Close Ratio. I believe the Tuscan RR cars had the CR boxes and yes I have seen one with my own eyes!
DV or Bell Hill can't remember who I phoned wanted about £650 ish all in. Also Tremecs UK supplier can supply them pretty much new off the shelf. Also there's a chap who makes T5's fit E type Jags and bought a lot of TVR's ex stock (had about 50) and he can supply, again not cheap though. Elite Transmissions I think.
I asked one of the local TVr garages for a gearbox supplier. I'll go ask them again and post up the number here.
Before going down the TVR T5 route bear in mind that the TVR T5 version has the gear lever in a different position compared to the RS500 and used a Chrysler (IIRC) output shaft spline. A Cosworth box might be a better fit for your application and save a lot of time and effort which can be spent on a CTS Quaife upgrade if needed.
teamHOLDENracing said:
But as he's putting it in a Volvo is the gear level position on a Cosworth box being different from the TVR box necessarily an issue?
Not necessarily but it might make the difference between cutting the chassis or not, making a remote or not and so on. It all depends on the actual job but best to know there is a 6 inch difference in the first place. Just in case. shpub said:
Before going down the TVR T5 route bear in mind that the TVR T5 version has the gear lever in a different position compared to the RS500 and used a Chrysler (IIRC) output shaft spline. A Cosworth box might be a better fit for your application and save a lot of time and effort which can be spent on a CTS Quaife upgrade if needed.
The position of the lever isn't too important- I can get a mustang/camaro tail to change over for next to nothing. Besides, if I get a Cerbera box it has a reote on it already that can be kept, lenghtened, shortened or just removed as needed. 
No need to save up a small fortune for a quaife either, as the Ford 8.8" that's going in can be upgraded with genuine Ford Racing carbon clutch plates for $85 plus shipping and duties.
Someone mentioned Gearboxman. I can vouch for the quality of their work.
My 2p is that a well built T5 should suit you, however, rather than spending big bucks on upgrading you should at least look at other boxes that were designed from the outset to handle high levels of torque.
I'm now looking at converting my C6 auto to a 5-speed and am loking closely at the TKO 500/600's:
http://www.thedrivenman.com/ke/ford/index.htm
As someone also stated with the current weakness of the US$ it's a no brainer.
Phil
79 De Tomaso Longchamp GTS
408ci stroker Cleveland + CHI heads.
My 2p is that a well built T5 should suit you, however, rather than spending big bucks on upgrading you should at least look at other boxes that were designed from the outset to handle high levels of torque.
I'm now looking at converting my C6 auto to a 5-speed and am loking closely at the TKO 500/600's:
http://www.thedrivenman.com/ke/ford/index.htm
As someone also stated with the current weakness of the US$ it's a no brainer.
Phil
79 De Tomaso Longchamp GTS
408ci stroker Cleveland + CHI heads.
If I had a grand plus shipping and import duties to spend on a gearbox I'd agree with you whole heartedly!
Unofrtunately my budget for this build is only going to allow a T5- and I could break 4 or 5 of those for the cost of one TKO. With an annual mileage (mostly up and down Blackpool prom at 30mph) of about 3000 and probably a dozen or so runs down the strip a year, longevity can be compromised somewhat to make the budget more palateable.
Of course, if anyone wants to buy any of my kids I could stretch a bit further on the budget..........
Unofrtunately my budget for this build is only going to allow a T5- and I could break 4 or 5 of those for the cost of one TKO. With an annual mileage (mostly up and down Blackpool prom at 30mph) of about 3000 and probably a dozen or so runs down the strip a year, longevity can be compromised somewhat to make the budget more palateable.
Of course, if anyone wants to buy any of my kids I could stretch a bit further on the budget..........
If you can hunt down a 88-94 Supra turbo in a local breakers. Ive no doubt, you will buy the box from it quite cheaply.
If you go for the big name breakers, then they may be more likely to know how good they are...but not always.
I recall the cheapest I paid for one, was £50, although the nose of it was damaged where the release bearing slides. Still a bargain.
The most I paid was £150 lol.
http://wwwrsphysse.anu.edu.au/~amh110/supra_in_vol...
This link is for a W-series, but R-154 turbo box is similar, albeit slightly bigger all round. BH pattern is similar, but again, its larger diam.
Here is another guy using a W-series box in a 240, albeit with a slightly different engine lol...
http://forums.turbobricks.com/search.php?searchid=...
If you go for the big name breakers, then they may be more likely to know how good they are...but not always.
I recall the cheapest I paid for one, was £50, although the nose of it was damaged where the release bearing slides. Still a bargain.
The most I paid was £150 lol.
http://wwwrsphysse.anu.edu.au/~amh110/supra_in_vol...
This link is for a W-series, but R-154 turbo box is similar, albeit slightly bigger all round. BH pattern is similar, but again, its larger diam.
Here is another guy using a W-series box in a 240, albeit with a slightly different engine lol...
http://forums.turbobricks.com/search.php?searchid=...
Edited by stevieturbo on Tuesday 4th December 23:51
I guess power delivery and diff ratio plays a part.
I never had any issues with my Supra box, I though it worked very well.
By comparison, 1st gear is too tall on my T56 at 2.66. But Im not prepared to drop to a shorter diff to fix it, as that would make the rest of the gears too short.
I emailed one seller on ebay. They have a Supra R-154 box for £395....tad pricey.
But IMO, much better than a T5
I never had any issues with my Supra box, I though it worked very well.
By comparison, 1st gear is too tall on my T56 at 2.66. But Im not prepared to drop to a shorter diff to fix it, as that would make the rest of the gears too short.
I emailed one seller on ebay. They have a Supra R-154 box for £395....tad pricey.
But IMO, much better than a T5
I've got a 4.10:1 ring and pinion on the way over to replace the stock Explorer 3.73:1.
On a 26.5" tall tyre (295/50x15) a redline of 6k rpm would give me a maximum speed in each gear as follows:
1st (2.95:1)= 38.1mph. Changing to 2nd gives an rpm drop 2328, or 34%
2nd (1.94:1)= 57.9mph. Changing to 3rd gives an rpm drop 2103, or 31%
3rd (1.34:1)= 83.7mph. Changing to 4th gives an rpm drop 1725, or 25%
4th (1.00:1= 112.2mph. Changing to 5th gives an rpm drop 2516, or 37%
5th (0.63:1)= 177.9mph!
A 7k redline gives you another 12% on top of those speeds- 207.55mph in 5th! How fast do you want to go?
On a 26.5" tall tyre (295/50x15) a redline of 6k rpm would give me a maximum speed in each gear as follows:
1st (2.95:1)= 38.1mph. Changing to 2nd gives an rpm drop 2328, or 34%
2nd (1.94:1)= 57.9mph. Changing to 3rd gives an rpm drop 2103, or 31%
3rd (1.34:1)= 83.7mph. Changing to 4th gives an rpm drop 1725, or 25%
4th (1.00:1= 112.2mph. Changing to 5th gives an rpm drop 2516, or 37%
5th (0.63:1)= 177.9mph!
A 7k redline gives you another 12% on top of those speeds- 207.55mph in 5th! How fast do you want to go?
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