Any 66-67mm Turbo will do you that without a doubt!

 

pte DBB 6466

 

600WHP on 93 pump? 76mm is your best bet.

 

For only pump 76mm is correct just as hellbringer suggested pushing 62-67mm turbo to 600whp on 93 is not smart

 

^^^Whut???

6766, no need for the dbb. add some meth and you will be at 600 all day, without meth, depending on housing, expect 550ish on 93

 

^^^ agreed. I think a 6766 will do 600 reliably on 93. If not, the 7175 should. No need for a 76.


Craig

 

67mm with a set of cams will get you very close. Going with a 76mm will just move your powerband over to the right 1000 or so rpm's for a small gain in power but a huge drop in fun factor.

 

BL366QR in my opinion.

 

6266 with meth?

 

why get such a huge turbo for all that shitty lag? powerband will be garbage

I'd go with Precison 6266 or BW S366 w/ meth

 

You guys are still obcessed with lag then you cry about tire spin lol. Its all in the setup and delivery of your power to the wheels. A good solid 600 or so will be alot happier on a 75mm turbine so you can shed the excess heat quicker and more effieciently for your plans on inconsistent pump gas. A better compliment to this would be a 3.5" exhaust then top it off with the proper size ar that suits your cam choice. Think of your entire setup as a system working together it also needs to work with your trans. I run a 7475 like hellbringer but i'm on a .96ar and alot of locals with smaller "quick Spooling" turbos and v8's usually find out the hard way it's all in the setup.

 

I've researched this quite a bit. If you're going with GSC1 cams. I've read a few posts with people running these and a 6766 and they are loving it. Great spool, lots of fun and close or st 600whp.

 

Wow.. Some interesting conjecture in here.

1000RPM of lag..? Shitty lag..? Garbage powerband..? Minimal power increase..?


LOL jeeeezus.... :lol: It's evident who regurgitates what they've read, assume and/or been sold vs. those that are grounded in the real world and have actually done it, or at least attempted to.


First, meth doesn't fit into the equation -- where did OP mention meth..? You can make as much power on pump & meth as your appetite will allow, so we might as well talk about race gas while we're at it..

If you want a reliable/repeatable/consistent 600+ WHP on straight 93 pump then a 67mm is not the answer, IMO. There's a BIG damn difference between a setup capable of producing 600WHP on the dyno for a few pulls vs. a setup that will repeatadly do 600WHP in the real world, over and over, pull after pull. I'd love to see one of these 600+ pump gas 67mm setups do 5th gear pulls to the moon as much as I'd love to see these supposed 1000WHP 67mm setups go to the track and 'prove it'. Hell, I've witnessed a 7675 setup tuned by well-known tuner not even put down 600WHP on 93 pump..!

 

I have to agree with HellBringer. I was thinking the same thing. Put up or shut up.

 

Deal, S362 18psi 608 whp stock engine, except cams:

6766 20-21psi boost reference is off in the chart .96 rear, stock engine, cams, AEM V1, not fully tuned, timing and boost weren't changed from the previous turbo:

 

I think most all of these turbos mentioned are capable of 600hp and I agree, your limitations will be the 93 octane gasoline. Although Horsepower is one thing... Torque is everything. Maximum Horsepower generally occurs at maximum RPM, and everything (Tires, clutches, engines transmissions) seems to break or break loose at maximum torque. This was an HKS T04R with less than a half tank of 92octane + topped-off with 100octane.

Peak torque at 4500rpm is going to be hard to match and the T04Z is supposedly much more responsive. I haven't seen any of the similar sized turbos mentioned produce such a wide and flat torque curve either... sustaining peak torque allows more control rather than acheiveing peak torque and quickly dropping off.

 

On 93 pump I made 570whp and 469wtq on a 6766/81 with GSC s1 cams at 20psi.

 

On 93 pump I made 570whp and 469wtq on a 6766/81 with GSC s1 cams at 20psi.

Very good solid numbers, I hope to make between 550-600 with my 67mm, though closer to 600, my compression ratio will be 9:1 instead of 8:5:1 so that will help a tad.

I'm also using a Garrett T04Z which is a bit old school, but built like tank in terms of durability.

 

Steve, keep using & posting everyone else's stuff. We know you are a pro at that. I'm glad you love having full boost at 3,300 rpm. I'm sure it's a tire spinner for sure. When you start posting real world data of your own that's relevant, maybe then we'll start listening.

 

Have you ever did a research paper in school, and had to do a works cited page? You can't exactly put yourself down now can you?

 

This sounds like a touchy subject for some folks, and I do appreciate everyones input. Its not like anyone here is trying to provide me false info. Im stuck between the 6266 and 6766.

I will NOT be using e85 or methanol, stock internals other than GSC1 cams. Im leanign towards the 6766 now

 

I have run both turbos. the 6266 did 680 whp in my car @ 18 psi (iirc), but on e85. of the two, the 67 is better for your goal of 600 whp on pump 93, imo.


craig

 

^^^ timely response.

 

I make 543 on pump with a 6765 with a stock jdm engine including jdm cams. 600 with Cams will be easy. No need for a bigger turbo than 67 as said above.

 

6776 here with a .81 and 268 cams with 9:4 ish cr . did 600 rwhp @19 psi on 93 octane tuned hot , no cool downs whatsoever..did this back in oct 2010 been running on stock ge bottomend since 2007 and driven almost daily

 

Fwiw I run a 6766 with Gsc1's. On 93 it put down around 520 thru a built auto/high stall at 18psi. If I remember correctly my tuner said that was equivalent to 595 with a six speed. Great turbo choice for your goals imo.

 

Built motor 9:1 with GSC S2's 6766 1.10 hotside, twin scroll. Running 576hp, and 489tq on 13.5 PSI on 91 octane

 

Jeeze, who is your tuner, Alpha or Jesus? :nervous:

 

My recommendation to the OP is to stop worrying about a dyno number and instead worry about what sort of driving experience he really wants from the car.
If he wants maximum highway missile action on pump gas, go for a larger single turbo. As Hellbringer mentioned, old school 76's have *repeatedly* broken the 600whp mark on 91 octane safely without any fuss, and on a variety of setups both with built and stock engines, standalones & piggybacks, different cam setups, etc.
Big turbos with big turbine wheels and big turbine housings attached to big exhaust piping all comes together to reduce backpressure & EGT's at moderate timing advance, and thus it can be pushed further on pump gas.
Newer 71mm's with similarly large hotsides and turbine wheels have delivered as well. The key here is to look for performance that is repeatable, proven, and isn't dependent on finding some magic harmony with every other part with a -2000ft DA and all sorts of other unrealistically ideal conditions.

Choritisu-Shi brings up another good point with that T04R data - Japanese tuning for highway racing has been absolutely dependent on maximizing the limits of their pump fuel, as they still do not have readily available race fuel or E85 or any options better than pump premium that's rated at 100 RON - which comes out to about 93-94 octane by our US (RON+MON)/2 rating method.
Japanese tuners have long advocated large turbine housings matched with large turbine wheels, as well as playing with dynamic compression ratios via large-duration camshafts in order to maximize safe performance and really push the limits. 1.0x hotsides are common on larger turbo setups for highway racers, and even on monsters like the HKS T51R SPL, 1.20 hotsides were made for it.
Yes, the larger housings & the larger cams all push the boost threshold higher into the rev range, but with good tuning & degreed camshafts the responsiveness of the engine outside of boost can mitigate how 'lazy' it feels quite a bit.
So, with those sorts of goals in mind, the OP would be well-served by many of the 'old school' JDM turbos, such as a T88-34D, HKS T04R, or HKS T51R.



But if the OP wants a fast-spooling & responsive car that's fun to drive & punchy in the twisties, etc, he'd be better off going with a smaller turbo like the oft-recommended 6266 that might make mid-low 500's easily on pump, and simply enjoying that powerband & responsive power delivery.


Either way, Supra owners are particularly easy to trap into a numbers game, where an obsession with dyno numbers will pointlessly trump a fun driving experience.
Making your Supra more fun to drive to *YOUR* standards should be your primary goal, and if dyno #'s or track #'s are a way to measure progress on a given setup, awesome!
But if you just want a slice of paper with '600hp' on it to brag to your friends and post on facebook, you're in this game for the wrong reasons.

 

...

Choritisu-Shi brings up another good point with that T04R data - Japanese tuning for highway racing has been absolutely dependent on maximizing the limits of their pump fuel, as they still do not have readily available race fuel or E85 or any options better than pump premium that's rated at 100 RON - which comes out to about 93-94 octane by our US (RON+MON)/2 rating method.
Japanese tuners have long advocated large turbine housings matched with large turbine wheels, as well as playing with dynamic compression ratios via large-duration camshafts in order to maximize safe performance and really push the limits. 1.0x hotsides are common on larger turbo setups for highway racers, and even on monsters like the HKS T51R SPL, 1.20 hotsides were made for it.
Yes, the larger housings & the larger cams all push the boost threshold higher into the rev range, but with good tuning & degreed camshafts the responsiveness of the engine outside of boost can mitigate how 'lazy' it feels quite a bit.
So, with those sorts of goals in mind, the OP would be well-served by many of the 'old school' JDM turbos, such as a T88-34D, HKS T04R, or HKS T51R.

...

You beat me to it. I was just going to quote Choritisu-Shi and bring up the larger hotsides on those old school turbo setups.

Anyhow a local made just over 600 with a Greddy T78-33D. I will see if I can dig up the dynosheet, boost and a/r. This was on pumpfuel 97/98RON.

Casper

 

Pump gas with a six speed, 6466 and gsc s1 586hp 510ftlbs on 19psi
E85 647hp 550ftlbs on 19 psi stock bottom end.