Buying a MKIV Supra

[bigjay]

Im looking around for a supra. I want to know do you guy's think I should get a NA supra (cheap) and then upgading the engine or just pick up a TT ? Is there more option in the TT tant the NA ? I Know I definately want the sport roof... Any of you have problems like leakage ?

And also I would like to know what mods should be done ? In what order ?

Thanks !
Jason

[pwpanas]

Originally Posted by bigjay

Im looking around for a supra. I want to know do you guy's think I should get a NA supra (cheap) and then upgading the engine or just pick up a TT ? Is there more option in the TT tant the NA ? I Know I definately want the sport roof... Any of you have problems like leakage ?

And also I would like to know what mods should be done ? In what order ?...

Starting with a TT in the first place is generally less expensive, if you want to end up with everything the TT has (including the bigger brakes, better driveline, etc.). Leakage problems with the targa are rare.

You'll find lots of info on the modifications to be done here:
http://www.mkiv.com/
...check out the "Faq" section and the "Tech Articles".

[bigjay]

Thanks !

Il check it out....

When moding the car how many HP is still considerd "reliable" We have all seen the potencial of the 2jz with 1000 hp. But its not only the engine we must think of... Trany, motormounts Dif,ect... What would be a good daily ?

[pwpanas]

Originally Posted by bigjay

...When moding the car how many HP is still considerd "reliable" We have all seen the potencial of the 2jz with 1000 hp. But its not only the engine we must think of... Trany, motormounts Dif,ect... What would be a good daily ?

Think of reliability (and streetability) as a sliding scale, not as something that a car either is or isn't. In other words, if you want it to be just as reliable as stock, don't modify it. That said, imo you could proabably achieve a reasonable level of reliability for daily driving up to about 550rwhp or so. After that point, you're getting into extensive modifications (eg complete fuel system replacement, auto tranny or clutch issues, big turbos that are most efficient at a boost level that requires race fuel, etc.).

P.S. There are no problems with 1000hp and the oem 6spd, oem motormounts, or oem diff. They all easily handle that horsepower level.

[bigjay]

Originally Posted by pwpanas

Think of reliability (and streetability) as a sliding scale, not as something that a car either is or isn't. In other words, if you want it to be just as reliable as stock, don't modify it. That said, imo you could proabably achieve a reasonable level of reliability for daily driving up to about 550rwhp or so. After that point, you're getting into extensive modifications (eg complete fuel system replacement, auto tranny or clutch issues, big turbos that are most efficient at a boost level that requires race fuel, etc.).

P.S. There are no problems with 1000hp and the oem 6spd, oem motormounts, or oem diff. They all easily handle that horsepower level.

Thanks !!
The supra realy is an amaizing machine !!


For the 550 rwhp range what turbo should be run ? single or twin ? What other mods should be done around that ?

[pwpanas]

Originally Posted by bigjay

...For the 550 rwhp range what turbo should be run ? single or twin ? ...

Although you could run either single or twin, both with almost identical results (since all aftermarket twins run in parallel), a single will be a lot cheaper. Note that you won't get a full 550rwhp out of the oem auto tranny with good reliability - that's only with the 6spd. With the auto, don't exceed about 500rwhp.

Originally Posted by bigjay

...What other mods should be done around that ?

With the 6spd and 550rwhp, you'd need a clutch with more clamping force than oem (eg. SouthBend or RPS). With an auto and 500rwhp, no driveline modifications are required. You'll very likely need to run a few race fuel in every tank of gas (only when you're wanting to use the full 500rwhp+), or a meth injection kit, depending on your boost level & the size of the turbo you choose. Tuning is essential, so you'll need some kind of fuel controller, like an A'PEXi S-AFC2. You'll need wider rims & tires so you don't just sit there & spin with the additional power.

Lastly don't underestimate the value (and the cost) of doing regular & thorough maintenance on your Mkiv Supra Turbo, according to the owner's manual. Full synthetic oil, regular coolant flushes, tranny, brake fluid, diff, power steering, etc. fluid changes, alignments, etc. are all essential.

That's about all I'd suggest off the top of my head...other members please feel free to post additional suggestions...