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Old 11-19-2011, 01:19 PM   #46
pwpanas
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Join Date: Oct 2005
Location: GA, USA
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Quote:
Originally Posted by warmkop View Post
Was just asking about the 2fuel lines you never now maybe you guys do things different becuase your 1/4 mile times is much faster then our times in SA.
What i did with the clutch kit is use the old clutch centre piece and made it a 5 puck button and the pressure plate i took in and made the pressure more on it when it brakes i would like to go to multiple disk.On the flywheel im using the same design as the stock flywheel to get more weigth out of the aluminium flywheel,and wil be able to modify the flywheel later for the multiple clutch kit if it doesn't work i wil just buy a clutch kit with flywheel.Wil sent you pics as soon as its finish.
The reason why i want to use the fuel cell is it can take 2 big external pumps with out any hassle with a new feed and return lines, i can also use the stock fuel tank with pump to supply a surge tank and use 2 pumps from the surge to supply.
I like trying to build things my self if it doesnt work i wil safe up and buy a brand name would like it if my supra can do 10s but it wil take time.
Wow, you're really overbuilding that fuel system. The oem fuel system with one oem in-tank denso pump and -5 AN lines (and ~-4AN banjo fittings) can push 550rwhp. All you need for 1000rwhp is one more oem denso pump and a new -6AN line. With two external pumps you can push about 5,000hp worth of fuel (!!!) - why go so big? It'll be REALLY noisy, the pumps will overheat and burn out if you try to drive them in stop-and-go traffic, and all that extra fuel won't do anything at all to help your hp or your 1/4 mile times.

Thank you for describing your clutch & flywheel project. It does sound interesting. Please post pictures, and keep us updated!

The US 1/4 mile times are fast for a number of reasons (6spd)...in no particular order:
1) Street/strip cars use wide and tall BFG drag radials on 16" rear rims and n/a rear brakes. The fender lip is cut and the body panel by the frame is pounded in to make more room for the tire. Low tire pressure is used (eg. 12psi). Be careful though - it's VERY tough/tricky (i.e. potentially dangerous) to drive around at that low tire pressure - gradually reduce it and get used to doing 1/4 mile runs at each pressure level.
2) Drag shocks are used in the rear
3) Front sway bar disconnected
4) Stripped down for weight savings (spare tire, rear seats, sub box, etc)
5) Smaller battery, moved to the right rear
6) Nitrous and 2-step are used to spool turbo
7) Lots of clutch 'feathering' to keep the rear tire slip optimal as the turbo builds power and speed increases
8) More nitrous as speed increases
9) Conversion to full drag slicks and skinnies up front will get you another 1/2 second or more
10) Conversion to a built TH400 will usually get you another 1/2 second (depending somewhat on your 6spd driving skill)

10 seconds is a 'walk in the park' (i.e. quite easy). You don't need to go to anywhere near this extreme to get into the 10s. Mkiv TT BPU autos (with very low mileage on the oem turbos and the oem block) have gotten into the 11s!!! With some NOS, proper tuning, and drag radials you could get into the 10s with the oem twin turbos, the oem fuel injectors, and the oem flywheel. Really!!!

Please, please, please, please - tell us EXACTLY what you're ultimately trying to achieve. Right now I have no idea if *in the end* you want "1000rwhp" -OR- a 10 second car -OR- an 9 second car -OR- ???? The goals you communicated are confusing because you don't need 1000rwhp to get into the 10s!!!??? Before you do anything else (eg. fuel system designs, flywheel machining, turbo buying, etc., etc., etc., etc.) please decide *exactly* what you want to achive and let us know so we can pin-point the minimal, most cost effective ways to modify your Supra and achieve that result!

I'm going to repeat the advice I gave you in my very first post on this thread:
"Please slow down! One step at a time!"
You've been spending time and other resources over-engineering some things you don't need, and you're totally ignoring other areas that are important. My guess is that you're also listening to advice (rather bad advice, imho) from one or more other people. Am I right? I do admire your enthusiasm, drive, and work ethic...but I hate to see you waste your efforts. Let's chat about the things you're thinking of doing before you actually start doing them!
__________________
Phil '94 Supra Turbo, 6spd, 'APU'+
Displacement is no replacement for boost.
Life begins at 30psi.


NB: Please consider posting any help requests in a new thread instead of asking me for help privately. About 99.9+% of the time, private help requests end up covering great information that could be very valuable to other forum members. If you have a good reason for needing the help request to be private, I'll consider it. If not, then why not give everyone else the opportunity to pitch in too, and/or learn from the information? Remember, there's no such thing as a dumb question. We're all here to help within this family of Supra owners.

Last edited by pwpanas; 11-26-2011 at 02:36 AM.
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