Guest Newschooler Posted April 13, 2007 Share Posted April 13, 2007 Hi I'm a brand spankin newbie and I'm probably posting a question thats been talked about alot of time here but anyways. I know that converting a NA mk4 supra to a TT one isn't really a good idea. My initial project was to buy a TT one and trow out the sequential system to put one single bigger turbo to pump out some serious power. That was the goal. Then I started to wonder: Trowing out the sequential TT and buy another turbo? Maybe I should buy a NA one and make the same project while I'm at it. So, my question is: Is it a good idea IF my goal is to use one sigle turbo. If its not a good idea, why? I'm guessing I would have to buy the TT tranny. What about the block and head, are they the same? What about all the other parts like diff, axles ect, are they different on the TT one? Thx to everyone who answer this and forgive my bad english. Link to comment Share on other sites More sharing options...
JustGav Posted April 13, 2007 Share Posted April 13, 2007 If you do a bit of searching, you will see this sort of thing has been done a few times, and there is certainly plenty of NA-T stuff out there. The NA engine and TT engines share the same block, however slightly different pistons and some oil squirters, however the NA-T boys have certainly been putting big power down in the states and some pretty impressive figures this side as well. Gearbox will be the issue, especially if it is an auto. The heads are slightly different although there is a school of thought that says for mild road the GE head is better flowing than the GTE. There are a few other bits... Link to comment Share on other sites More sharing options...
Darren Posted April 13, 2007 Share Posted April 13, 2007 You can fit a single turbo kit to an NA no problem. All depends on what power you are trying to achieve? Running gear should be just fine. Link to comment Share on other sites More sharing options...
JustGav Posted April 13, 2007 Share Posted April 13, 2007 You can fit a single turbo kit to an NA no problem. All depends on what power you are trying to achieve? Running gear should be just fine. The NA 340E gearbox is weak, they may share the same code, but they are different gearboxes (extra valve and some other bits), there is some info out there regarding the torque that they will take, and it isn't very high... Link to comment Share on other sites More sharing options...
Darren Posted April 13, 2007 Share Posted April 13, 2007 The NA 340E gearbox is weak, they may share the same code, but they are different gearboxes (extra valve and some other bits), there is some info out there regarding the torque that they will take, and it isn't very high... Has he said he has that gearbox? And I asked him what power he's going for....Anyway I wasnt contridicting you we both posted at the same time Link to comment Share on other sites More sharing options...
Blackie Posted April 13, 2007 Share Posted April 13, 2007 You can fit a single turbo kit to an NA no problem. All depends on what power you are trying to achieve? Running gear should be just fine. any ideas where to get the single turbo kit and whats included? i thought i was being smart by getting a non turbo to save money, wish i didnt now Link to comment Share on other sites More sharing options...
Lebsteif Posted April 13, 2007 Share Posted April 13, 2007 any ideas where to get the single turbo kit and whats included? i thought i was being smart by getting a non turbo to save money, wish i didnt now It's your lucky day, i ahve one for sales, cheap as well http://www.mkivsupra.net/vbb/showthread.php?t=101849 Link to comment Share on other sites More sharing options...
Guest Newschooler Posted April 13, 2007 Share Posted April 13, 2007 You can fit a single turbo kit to an NA no problem. All depends on what power you are trying to achieve? Running gear should be just fine. I'd like to eventually acheive between 600 and 800whp. As for the tranny, I'd like to get a 6spd one for reliability issues and good gearing. What about the axle and rear diff? Will I have to change them? thnx Link to comment Share on other sites More sharing options...
Chris Wilson Posted April 13, 2007 Share Posted April 13, 2007 I'd like to eventually acheive between 600 and 800whp. As for the tranny, I'd like to get a 6spd one for reliability issues and good gearing. What about the axle and rear diff? Will I have to change them? thnx If you want a genuine, reliable 800 rear wheel HP car you will need to virtually build a whole new drivetrain for the thing! Toyota are not dumb enough to build a drivetrain for 300 HP that will reliably handle 900, weight, cost and bulk forbid it Link to comment Share on other sites More sharing options...
Guest Newschooler Posted April 14, 2007 Share Posted April 14, 2007 If you want a genuine, reliable 800 rear wheel HP car you will need to virtually build a whole new drivetrain for the thing! Toyota are not dumb enough to build a drivetrain for 300 HP that will reliably handle 900, weight, cost and bulk forbid it I've read that the 6spd tranny + axles + rear diff are very strong on the TT version. They supposedly can handle 800whp. Thats why my question was more like if the axles and rear diff are as strong as the TT one. Logically I don't think so. A list of complete differences between the NA and TT would be a good thing for me. The thing is: If you plan on upgrading everything (brakes, aftermarket axles, stronger diff, single turbo ect) wouldn't be cheaper to get the NA one IF the block+head are the same? Link to comment Share on other sites More sharing options...
gaz1 Posted April 14, 2007 Share Posted April 14, 2007 I've read that the 6spd tranny + axles + rear diff are very strong on the TT version. They supposedly can handle 800whp. Thats why my question was more like if the axles and rear diff are as strong as the TT one. Logically I don't think so. A list of complete differences between the NA and TT would be a good thing for me. The thing is: If you plan on upgrading everything (brakes, aftermarket axles, stronger diff, single turbo ect) wouldn't be cheaper to get the NA one IF the block+head are the same? they may handle 600bhp for a while although greg at turbofit nwas running stock to about 800 but things will go bang soon, the n/a box will not handle anything above 400bhp for long, going the single route would be better with a tt;) Link to comment Share on other sites More sharing options...
Chris Wilson Posted April 14, 2007 Share Posted April 14, 2007 An N/A can be an excellent base for a big HP car, but only for the shell and some basic engine castings, IMO. For a more normal turbo conversion they are good value for money at under 3K Link to comment Share on other sites More sharing options...
Recommended Posts
Please sign in to comment
You will be able to leave a comment after signing in
Sign In Now