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The mkiv Supra Owners Club

KnightRider1981

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Everything posted by KnightRider1981

  1. words of wisdom.... ^_& Love to come and work with you on my days off... I'll be your tea bitch Lol!
  2. my vvti next to my MR GTO 11.3 @TOTB
  3. Hi David them shifts where farster then a GTR wow... If it's taking 600tq ill have one of them box's and a suprastick:D
  4. Hi bud hope you get it sorted out. by the way cool name
  5. Do we know yet how the RR went on the new turbos you are doing, IE Bhp Tq and boost? ^_^
  6. I"m Coming on most days to see whats going on with this beast! as i want to see how much power and TQ them new CEA turbos make!
  7. my 97 vvti manual singel on the lift and my 1uz v8 on the right BIG PLANS for the v8!!!
  8. be nice to see how much you can push the 1j vvti, i have had my 1j vvti for 5 weeks its a stock soarer but its like driveing a 5l v8 lol.
  9. Thank"s for your time on that! (; good info n1 loveing your t67 bb turbo on your old supra..
  10. Unfortunately, things start getting more difficult after simple BPU™ modifications. Modification becomes more than "bolt on Downpipe, gain 50hp". Things like tuning, parts selection, and matching combinations of parts become much more important. However, this is the case with ANY high HP car. Actually, even at exceptionally high power levels, the Supra TT is still easier to extract power from than almost any other performance car. But it should be kept in mind, that it wouldn't be as simple as the BPU™ bolt-ons. If you just want something that will toast that pesky Viper GTS. Then focus on a mild single turbo upgrade (T04S04, T60-1, SP57-SP61). Along with this, you should install a front mount intercooler, a fuel controller, fuel pulsation damper bypass and EGT gauge. This is assuming you have done all the BPU™ mods, plus BOV, EBC, Cam Gears. With tuning, and a few odds and ends, you should be able to pull 450-500 RWHP (490-580 crank HP) numbers while on a stock fuel system (assuming it is in great condition). This would be a total investment of approximately $6,700-$11,500 in engine/electronic components (also includes the proper gauges). If you already have the BPU™ mods or FMIC, etc., you will spend less than this. The difference in prices reflects the cost of higher end parts and addition of a HKS VPC to replace the restrictive stock MAF. The next level would require a completely upgraded fuel system, and performance cams would be recommended, as well as further electronics (programmable engine management such as the AEM, or VPC/GCC/ECU combo, etc.). This would allow you to run much larger turbos and injectors. You can make it past the 700RWHP range without needing to replace the internals of the motor with stronger components, even at these power levels, if properly tuned and maintained you should retain a fair amount of reliability while still on the stock internals, as some people have eclipsed the 800RWHP level while still running stock bottom ends in their Supras. If you choose to go ahead and build up the bottom end, then the skies are the limit as far as power goes. Just make sure to have part selection, installation, and tuning done by competent and experienced persons. Although this should hold true at ANY level of modification. Should I install a Turbo Timer? Absolutely. Unless you don't mind sitting in your car while it idles down every single time you need to turn the car off. A Turbo timer keeps the engine running for a preset time once you turn off the ignition. So you can remove your keys, and lock up the car and not have to worry about it, it will shut off on it's own. This is important for the life of the turbos. If the turbos are not given time to cool down, it can overheat the oil and cause coking which will block oil flow to the turbos and damage bearings and cook seals. How much is the Supra's power output affected by changes in ambient temperatures? Very noticeably, just as with most turbo cars, the Supra Twin Turbo can be very temperature sensitive. Especially with the stock turbos and intercooler. On a BPU™ car, I would not be surprised to see a 10 percent reduction between 50-60deg temperatures, and 90deg plus temperatures Will the stock clutch hold the power levels of a BPU™ car? It depends on the condition and wear on the stock clutch. If it is in good condition, yes, it will hold the power, pretty well in fact, although you may experience clutch slip while at full boost in high gears such as 5th and 6th. If you drive vigorously, meaning you run at high boost frequently, then the life of the stocker will be GREATLY shortened. Be surprised if you see an extra 10,000 miles after BPU™. Can I resurface my flywheel when replacing the clutch? It is not recommended. Buy a new Toyota Flywheel. Can I install a lightweight flywheel? Yes, but be aware that they can create a lot of noise at idle, and can transmit more vibrations and shock to the expensive Getrag transmission. Why is pulling the TRAC fuse beneficial over just turning it off with the switch on the center console? Just pushing the "Trac Off" button only partially disables the Trac system. It disables the Trac throttle body and TRAC funtion through the ABS System (on 93.5-96 only), but not the Trac system's ignition timing retard function. Unplugging the Trac fuse eliminates both functions, as well as the 155mph speed limiter, which works through the trac system. The fuse can be found in the main fuse box on the driver's side of the engine compartment. It must be noted that removing the fuse will cause the TRAC light to stay on, but you'll get used to it. Will the TRAC system improve the cars performance? NO. The Trac system was calibrated to improve traction in slippery conditions. It was not calibrated with performance in mind. When the Trac system senses a loss of traction, it comes on hard, cutting power drastically; this will do nothing but hurt performance. I also would not rely on the Trac system for providing stability at high speeds, if you were to loose control, it would be too slow and clumsy, and would more than likely hamper your efforts to regain control. How can I remove the factory 155mph speed limiter? Remove the fuse for the Trac system. The speed limiter works through the Trac throttle body. What is the Supra TT's top speed with the Trac fuse removed? There is some debate on this subject. There are rumors that 180 can be achieved. But by going with the numbers, 168-172mph in stock form seems possible. What is the Supra TT's maximum theoretical top speed? Can it exceed 200mph with enough power? Lets find out. The Supra TT with the 6-speed has a stock engine redline of 6800rpm, and a 6th gear ratio of .79:1, with a rear axle ratio of 3.13:1. Now we multiply our 6th gear ratio times our rear axle ratio, and we find out our final gear ratio is 2.472:1. Now we divide 6800rpm by our total gear reduction of 2.472:1 and we find out our rear axles, and therefore wheels are spinning at 2751rpm at 6800 engine rpms. Now we need to calculate our tire circumference. The rear tires section width it 255mm, and the sidewall's aspect ratio is .40, so our sidewalls are 102mm. Now, to convert this to inches, we divide this by 25.4, which equal's 4.015 inches. Now multiply this by two, since we have two sidewalls making up the total diameter, and add the wheel diameter of 17", and we see a total diameter of 25.031 inches. Now to find out our circumference, we multiply that number times pi (3.14), and we find out the circumference is 78.59 inches, now divide that by 12 to convert to feet. And we get 6.549 feet total circumference. Now multiply our tire's revolving speed, by the tire's outside circumference, and we find that the tire is covering 18,016 feet per minute, divide that by the 5280 feet in a mile, and we find we are covering 3.412 miles per minute, now multiply that by the 60 minutes in an hour, and we find we are traveling 204.7miles per hour @ 6800rpm in 6th gear. If the engines redline is increased to 7500rpm, which it often is, because of a higher flowing turbo. Then our maximum speed would be 225.8mph, given enough power of course. that u think (: im going bpu
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