V8KILR Posted April 10, 2012 Share Posted April 10, 2012 I have changed my 6 speed Supra to a Turbo 400 (TH400) and have put together a short article on the conversion on my website for anyone that may be interested in doing the same. http://mkiv.supras.org.nz/members/kevin_th400.htm Quote Link to comment Share on other sites More sharing options...
Tyson Posted April 10, 2012 Share Posted April 10, 2012 Very good read that, what BHP are you making at the moment? Got a spec list of the car? Quote Link to comment Share on other sites More sharing options...
Guigsy Posted April 10, 2012 Share Posted April 10, 2012 read the 2nd line on his link Quote Link to comment Share on other sites More sharing options...
Westy Posted April 10, 2012 Share Posted April 10, 2012 Got to love to furry seats! Nice write up! Quote Link to comment Share on other sites More sharing options...
Tyson Posted April 10, 2012 Share Posted April 10, 2012 read the 2nd line on his link Whoops Quote Link to comment Share on other sites More sharing options...
V8KILR Posted April 10, 2012 Author Share Posted April 10, 2012 Very good read that, what BHP are you making at the moment? Got a spec list of the car? Thanks. My car info page (which still says 6 speed so needs updating) is at: http://mkiv.supras.org.nz/members/kevin.htm Quote Link to comment Share on other sites More sharing options...
Josh Posted April 10, 2012 Share Posted April 10, 2012 Good read. The gearknob's on the wrong way round though Quote Link to comment Share on other sites More sharing options...
David P Posted April 10, 2012 Share Posted April 10, 2012 Did you forget to read line 5? Quote Link to comment Share on other sites More sharing options...
ripped_fear Posted April 10, 2012 Share Posted April 10, 2012 What radiator are you using? Quote Link to comment Share on other sites More sharing options...
V8KILR Posted April 10, 2012 Author Share Posted April 10, 2012 What radiator are you using? It's a custom made radiator using a 60mm or 70mm core? Quote Link to comment Share on other sites More sharing options...
Josh Posted April 10, 2012 Share Posted April 10, 2012 Did you forget to read line 5? I was taking the pee Quote Link to comment Share on other sites More sharing options...
bondango Posted April 10, 2012 Share Posted April 10, 2012 Will you be installing a Transbrake kit? Quote Link to comment Share on other sites More sharing options...
V8KILR Posted April 10, 2012 Author Share Posted April 10, 2012 (edited) Will you be installing a Transbrake kit? Probably not, unless I also install a 2-step at the same time to limit the rpm to say 4000rpm, so that the launch would not be too harse on the tires and drivetrain. My mate with a similar setup has got low 1.5's just driving off the line. Edited April 10, 2012 by V8KILR (see edit history) Quote Link to comment Share on other sites More sharing options...
MONKEYmark Posted April 10, 2012 Share Posted April 10, 2012 hi i have a BL TH400 with transbrake and reverse pattern shifter.do you have any wiring diagrams and close up pics of th400 connectors.bought a th400 book off ebay.not sure what stall i have for mine.seen a few videos of the transbrake in action seems good for drag racing but some people dont like it for motorway driving. good write up Quote Link to comment Share on other sites More sharing options...
V8KILR Posted April 10, 2012 Author Share Posted April 10, 2012 hi i have a BL TH400 with transbrake and reverse pattern shifter.do you have any wiring diagrams and close up pics of th400 connectors.bought a th400 book off ebay.not sure what stall i have for mine.seen a few videos of the transbrake in action seems good for drag racing but some people dont like it for motorway driving. good write up Mine also has the manual valve body so the only electrics used on the trans is the Digital Dakota SENS-01 (screws in at left rear of trans) used to send the speed signal to the Digital Dakota converter for the odo/speedo. Do BL provide a speed sender unit with the auto you bought? Quote Link to comment Share on other sites More sharing options...
V8KILR Posted April 21, 2012 Author Share Posted April 21, 2012 I took it down the 1/4 and it is very slow off the line. The only timed run due to timing equipment issues at the track was a 2.4 60ft when just flooring it from idle. Holding it at 3200rpm and flooring it from there didn't seem any quicker though. It hasn't been re-tuned since going from manual to auto so, I will get that shortly to see if this will get the turbo spooling up quicker. Once it gets to 4000rpm it goes really well. If all else fails, I'll put a transbrake in it. Quote Link to comment Share on other sites More sharing options...
bondango Posted April 21, 2012 Share Posted April 21, 2012 Graeme from Croydon wholesalers in NZ ran decent times in his supra with th400 + translock, T88, PI 3800 Hi stall ,BM quick ratchet shift, 50 shot to 15psi (to spool turbo). seems to launch ok http://www.youtube.com/watch?v=S6F-llIByAQ Quote Link to comment Share on other sites More sharing options...
V8KILR Posted April 22, 2012 Author Share Posted April 22, 2012 (edited) The key ingredient there is NOS which I'm not very keen on. Graemes car is now owned by Robert and I was talking to him yesterday. With no NOS and just using the transbrake to launch on low boost (20 psi) he has done a best of 9.8s and does consistent 10 flats on low boost. I should be able to tune mine for the same hp that he is making at 20 psi (albiet on higher boost as my turbo is smaller) and I would be very happy with high 9s from this setup. Edited April 22, 2012 by V8KILR (see edit history) Quote Link to comment Share on other sites More sharing options...
Kaan W Posted May 21, 2013 Share Posted May 21, 2013 The key ingredient there is NOS which I'm not very keen on. Graemes car is now owned by Robert and I was talking to him yesterday. With no NOS and just using the transbrake to launch on low boost (20 psi) he has done a best of 9.8s and does consistent 10 flats on low boost. I should be able to tune mine for the same hp that he is making at 20 psi (albiet on higher boost as my turbo is smaller) and I would be very happy with high 9s from this setup. An old thread I know... But did you manage to pull a 9 with this setup in the end? Quote Link to comment Share on other sites More sharing options...
V8KILR Posted May 21, 2013 Author Share Posted May 21, 2013 An old thread I know... But did you manage to pull a 9 with this setup in the end? Not yet and its winter here now so no drag racing. I've upped the power to 762whp so more then capable. Just trying to sort out a decent high stall converter at the moment. Quote Link to comment Share on other sites More sharing options...
Kaan W Posted May 21, 2013 Share Posted May 21, 2013 Ive probably missed it some where but can the stock ECU be removed completely with this setup? Quote Link to comment Share on other sites More sharing options...
V8KILR Posted May 21, 2013 Author Share Posted May 21, 2013 Ive probably missed it some where but can the stock ECU be removed completely with this setup? It is long gone. I run the plug-in Link G4 which made for an easy swap. Quote Link to comment Share on other sites More sharing options...
Kaan W Posted May 21, 2013 Share Posted May 21, 2013 It is long gone. I run the plug-in Link G4 which made for an easy swap. Thats good. I was thinking of doing this conversion sometime next year but im tryng to make my mind up which box to go for. Quote Link to comment Share on other sites More sharing options...
V8KILR Posted May 21, 2013 Author Share Posted May 21, 2013 Thats good. I was thinking of doing this conversion sometime next year but im tryng to make my mind up which box to go for. The TH400 I have uses a B&M quickshifter which means the gear change is manual, so you can run any ecu. Quote Link to comment Share on other sites More sharing options...
Kaan W Posted May 21, 2013 Share Posted May 21, 2013 The TH400 I have uses a B&M quickshifter which means the gear change is manual, so you can run any ecu. I already have an aftermarket ECU for the engine so thats a bonus, I will go with the B&M shifter as I love the instant manual shifting feel. Also is there any main difference in choosing a reverse pattern shifter other then pulling back on the stick to change up? Quote Link to comment Share on other sites More sharing options...
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