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Discussion Starter #1
NASA/Open-Track is having a great event this weekend at Willow full track.

I am going with my car and will let you guys know how it does. I have a Black 94 w/

Greddy T-78 - I only run 1.0 Bar
Greddy Three Row FMIC
HKS Titanium Exhaust
OS-Giken Triple Plate Clutch

Brembo F50 Brakes - 14.1"
TRD Swaybars
HKS Hypepdamper II coilovers
18' Enkei RP01 with Hoosier slicks 275/35 front and 285/30 rear
Front and rear strutbars

Front camber 1.5"
Rear camber 1.1"

Took a while to dial in the suspension but now it is REALLY fast.

See you at the track!!!

Maxim.
 

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Originally posted by madmax:
<STRONG>NASA/Open-Track is having a great event this weekend at Willow full track.

I am going with my car and will let you guys know how it does. I have a Black 94 w/

Greddy T-78 - I only run 1.0 Bar
Greddy Three Row FMIC
HKS Titanium Exhaust
OS-Giken Triple Plate Clutch

Brembo F50 Brakes - 14.1"
TRD Swaybars
HKS Hypepdamper II coilovers
18' Enkei RP01 with Hoosier slicks 275/35 front and 285/30 rear
Front and rear strutbars

Front camber 1.5"
Rear camber 1.1"

Took a while to dial in the suspension but now it is REALLY fast.

See you at the track!!!

Maxim.</STRONG>
Maxim,

That sounds like an awesome setup. You should do well at Willow with that setup. I'd be very interested in hearing how you like the T78 on track compared to the stock turbos if you had any track experience with them. I thought about going, but it's just too far of a drive from NoCal. Hopefully, attendance will be light. There were 50 people in the run groups at the last NASA event I went to, which is just too damn many cars.

Watch the temp gauge with that FMIC and be careful in turn 9! :)
 
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Been to Buttonwillow, Firebird (Arizona), and Las Vegas with the T-78. It makes NO power under 4000rpm and then blam at 4800rpm I'm making pretty much full power. The car is a handfull to drive until you figure it out but I am now able to drive really smooth with it (I've been going to the track with various cars for six years steady). I am only running 1 Bar so the effects of the Big turbo are not as bad.

One thing I did to help keep boost steady and minimize re-spooling during throttle modulation is replacing the spring in the Greddy Type R BOV with a much softer spring. This keeps my Turbo from backspinning during light to moderate boost loads.

During the Viper/Touring Car Club day at buttonwillow, my car was within the top 3 cars that day which included a heavily modified modified Viper ACR and a Viper GTS-R, that right, GTS-R, and my MKIV.

Maxim.
 

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Originally posted by madmax:
<STRONG>Been to Buttonwillow, Firebird (Arizona), and Las Vegas with the T-78. It makes NO power under 4000rpm and then blam at 4800rpm I'm making pretty much full power. The car is a handfull to drive until you figure it out but I am now able to drive really smooth with it (I've been going to the track with various cars for six years steady).
</STRONG>

That's what I was guessing based on the dyno charts I've seen for them. A lot of people think having a turbo that spools very fast is what you want. I'd rather have something that spools up a little slower, and makes the power delivery easier to handle on corner exits.

<STRONG>
During the Viper/Touring Car Club day at buttonwillow, my car was within the top 3 cars that day which included a heavily modified modified Viper ACR and a Viper GTS-R, that right, GTS-R, and my MKIV.

Maxim.</STRONG>
Glad to hear it. I'm usually one of the fastest cars at events I attend in my BPU car, and a well driven single car should really clean up. Vipers are just stupid fast on a racetrack even in stock form. Were you at the NASA Buttonwillow event in April? There was a guy there with a black T78 equipped mkiv I talked to briefly in the tech line, but I never saw the car again.
 
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That was me. I showed up without registering and so they were going to put into Street Car group 4 (I usually run in 1) which already had 25 cars in it. I thought it would not be worth the $$$ so I drove back to LA.
 

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Originally posted by madmax:
<STRONG>That was me. I showed up without registering and so they were going to put into Street Car group 4 (I usually run in 1) which already had 25 cars in it. I thought it would not be worth the $$$ so I drove back to LA.</STRONG>
You didn't miss anything. Group 4 actually had ~55 cars. After hearing that, and the fact that they had 25 "incidents" on Saturday in the first session, a friend of mine and I changed to Group 3, which also had 40+ cars, but doesn't allow passing in the corners, so the stupidity level was a little lower. It wasn't a very good day. I didn't get a clear lap in all day since there were so many cars.
 
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Discussion Starter #7
Hi, Madmax

I have almost the exactly setup as you!!!
Black '94 Supra

Greddy T-78 - running 1.0 Bar (stock fuel)
Greddy Three Row FMIC
HKS Supra Dragger
Stock Clutch

What do you think about T78? and how does it feel on the track, compare to other cars?
I get full boost around 4500-4800 and I think it's completly drivable for everyday on the street! and I love the wastegate!!!
:D Have you dyno the car like this?
 

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Hey Max!
I was going to try to talk to you some more.Heard that your wastegate got stuck(open).Sorry about that.I'm going back to Willow myself 7/28-29.
Dan 97tt6spd(stripped)
ps.The sound of your car on the front straight was fantastic!
 
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Discussion Starter #9
Yes, my wastegate got stuck!!!! AAARRRGGG...

I am going back to Willow on July 29th as well but will be bringing my M3 instead. The wastegate has broken for a second time and I suspect it is because the car is not set up properly for the track and running too hot. I am planning on shrouding the exhaust side of the turbo, venting my hood, and upgrading my fuelsystem so the EGT is below 700C. I suspect it will take a month or two before it is sorted again.

I have footage from the track and will post it tomorrow...

Maxim.

Maxim.
 
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Madmax and Jsupra

Are you guys both runnig stock fuel?

I do alittle racing at summit point near DC and was think ing of going single. The T-78 is a great price now and wiht being able to make power on only run 1 bar seems to be great.
Any thoughts? or helpful hints?

-TY

[ July 10, 2001: Message edited by: TY ]
 
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Discussion Starter #11
Hey, Madmax, I'm the guy with the silver RX-7 that was pitted next to you. I'm hoping you'll post some video, since my camera didn't take anything during those first two sessions we were on the track together...
 

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Hey, we can I get a T-78 kit at a good price?? Considering this turbo or the T-66....for the right price either one would be great.

Thanks!
 
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The best place to buy ANYTHING for your Supra is SP Engineering in Industry Ca. they can be reached at 626.333.5398 and ask for Ivan. Tell him Max told you to call him and he will give you the best possible price.
 
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Discussion Starter #14
I am running street fuel with the stock injectors and a second fuel pump and VPC. My EGT @ 1bar never goes over 700C.

The car at 1bar with the t-78 will blow the doors off a stock-twin running @ 1.3 - 1.5bar
 
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Discussion Starter #15
Originally posted by madmax:
<STRONG>I am running street fuel with the stock injectors and a second fuel pump and VPC. My EGT @ 1bar never goes over 700C.

The car at 1bar with the t-78 will blow the doors off a stock-twin running @ 1.3 - 1.5bar</STRONG>
Hi madmax,
Got couple questions for you,
How do you set up your VPC? set to zero? Do you have any other fuel controller? S-AFC? GCC?

I am running T78 stock fuel as well.

John
Black Supra T78
 
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