Single Turbo Question

[fastsupra]

Ok that's makes sense. Could you post a link to a turbo or turbo kit that would be best for my hp goal and application? I would run race fuel but its just so expensive and I'd rather just run methanol since a one gallon tank of meth injection will last longer then a tank of race fuel.

[pwpanas]

Originally Posted by fastsupra

Ok that's makes sense. Could you post a link to a turbo or turbo kit that would be best for my hp goal and application? I would run race fuel but its just so expensive and I'd rather just run methanol since a one gallon tank of meth injection will last longer then a tank of race fuel.

Agreed race fuel is an expensive option, but it's really the only way to safely squeeze absolutely every ounce of power out of a mid-size or large turbo in a gasoline engine.

Consider this complete turbo kit. If you get it tuned properly (including precise boost control), I'm certain you'll be happy with it:
http://www.spracingonline.com/store/...93-98_Supra/28
Pick the .81 a/r and ball bearing (with water lines) options.

[fastsupra]

The only thing is that I really like that the turbo I originally looked at was a waterless dual ball bearing and that the turbo could have a quickspool valve mounted with it. I don't know much about how big a difference having the waterless turbo vs a turbo with water lines but it just seems better.

http://www.spracingonline.com/store/...urbo_6262/3663

I could be wrong but it just seems like this turbo with the setup I described would spool more quickly then the ball bearing turbo that comes with it or is the difference between spool times very minimal?

Also I found this turbo on SoundPerformance and was wondering what you thought
http://www.spracingonline.com/store/...urbo_6266/3676

[pwpanas]

Originally Posted by fastsupra

The only thing is that I really like that the turbo I originally looked at was a waterless dual ball bearing and that the turbo could have a quickspool valve mounted with it. I don't know much about how big a difference having the waterless turbo vs a turbo with water lines but it just seems better.

http://www.spracingonline.com/store/...urbo_6262/3663

I could be wrong but it just seems like this turbo with the setup I described would spool more quickly then the ball bearing turbo that comes with it or is the difference between spool times very minimal?

Also I found this turbo on SoundPerformance and was wondering what you thought
http://www.spracingonline.com/store/...urbo_6266/3676

A water cooled turbo is more reliable, especially for extended hard driving like top speed runs and roadracing. Contrast that with a 10 second drag race where water-cooling the turbo doesn't do much good.

That's a 569.5rwhp turbo in your 1st link, and a 624.75rwhp turbo in the 2nd link. Neither is a 650rwhp turbo (through a 6spd), so neither one meets your power goal - right? Also, 624.75rwhp is right at the top of that 2nd one's capability range, probably running a lot of boost to get there. That boost level may be beyond your meth injection kit's ability to suppress detonation for. If you were willing to run race fuel, you could try that turbo at 40 or 50psi of boost, but with a limited flow meth injection kit, that won't work. Oh, and of course that 569.5rwhp will spool quicker, but so do the oem twins - right?

[fastsupra]

Yeah you are right. so then do you know a good turbo that is waterless and quick spool valve compatible that will give me my 650rwhp goal?

Along with the turbo kit and everything that will come with it, what else will I be needing to upgrade in order to run 650rwhp? I currently have 750cc injectors with a top feed, greddy 3 row FMIC, boost controller and the snow stage 3 methanol injection kit. I am looking at getting an AEM standalone when I buy the turbo kit. Is there anything else that I will need to upgrade?

[pwpanas]

Originally Posted by fastsupra

Yeah you are right. so then do you know a good turbo that is waterless and quick spool valve compatible that will give me my 650rwhp goal?

Again, if you don't mind me asking, why waterless? A water-cooled turbo is significantly more reliable. The penny-pinching Toyota accountants wouldn't have allowed water-cooled oem twins if it wasn't fiscally beneficial.

Originally Posted by fastsupra

...Along with the turbo kit and everything that will come with it, what else will I be needing to upgrade in order to run 650rwhp? I currently have 750cc injectors with a top feed, greddy 3 row FMIC, boost controller and the snow stage 3 methanol injection kit. I am looking at getting an AEM standalone when I buy the turbo kit. Is there anything else that I will need to upgrade?

1) Why didn't you get a complete fuel system? Those injectors are useless without all of the extra plumbing, pumps, fittings, relays, wiring, brackets, etc.
2) You don't need an AEM to run only 650rwhp.
3) If you're getting an AEM 100% for sure (for whatever reason), then get it installed and running perfectly with the oem twins first. Then put on the 100% complete fuel system and get that working with the AEM. After that put on the turbo kit. If you make all of the changes at once, among other things troubleshooting will be a nightmare.

You can run 650rwhp just fine with the oem maf and a simple 'piggyback' fuel controller. If anything, there's too much on your list already, other than the need for wider rims and tires to handle the additional horsepower (unless you want to just sit there spinning instead of going fast). Oh, the oem clutch won't handle 650rwhp. Let me know if you have any questions about clutch upgrades.

[fastsupra]

When I purchased the car, it already had new injectors installed.

I guess the reason I wanted that turbo was because of the quick spool valve. I already have the AEM Fuel Management System I didn't realize I didn't have to get a standalone for 650whp. I am currently running a Southbend Stage 3 clutch.

So then if I want to do 650whp, should I go with a 67mm turbo then like in the kit you sent me?
http://www.spracingonline.com/store/...93-98_Supra/28

With that kit I will have to also buy a full fuel system then? Can you send me a link to a good system along with anything else I might need?

[fastsupra]

Originally Posted by pwpanas

Again, if you don't mind me asking, why waterless? A water-cooled turbo is significantly more reliable. The penny-pinching Toyota accountants wouldn't have allowed water-cooled oem twins if it wasn't fiscally beneficial.


1) Why didn't you get a complete fuel system? Those injectors are useless without all of the extra plumbing, pumps, fittings, relays, wiring, brackets, etc.
2) You don't need an AEM to run only 650rwhp.
3) If you're getting an AEM 100% for sure (for whatever reason), then get it installed and running perfectly with the oem twins first. Then put on the 100% complete fuel system and get that working with the AEM. After that put on the turbo kit. If you make all of the changes at once, among other things troubleshooting will be a nightmare.

You can run 650rwhp just fine with the oem maf and a simple 'piggyback' fuel controller. If anything, there's too much on your list already, other than the need for wider rims and tires to handle the additional horsepower (unless you want to just sit there spinning instead of going fast). Oh, the oem clutch won't handle 650rwhp. Let me know if you have any questions about clutch upgrades.

I just purchased the Sound Performance fuel system with the 255 dual walbro pumps and 880cc injectors and I was just wondering about how much power my setup will be able to handle. Also, will a Greddy 3 row intercooler be able to handle 700whp or will i need to upgrade it?. Last and final question, how do you calculate how much boost you can run on pump gas safely?