posted September 16, 2011 06:04 AM
Supercharged ZX14 race car Heres a video from last weekends race in Sicily. Our car made fastest lap of the weekend, took pole position and won the afternoon 10 lap race. ZX14 06/07 engine supercharged running 11psi boost.
http://youtu.be/9WPZ_WWZbko
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John Bul Racing. Malta.
posted September 16, 2011 12:47 PM
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Smokin Performance Cycles..
Tampa Bay , FL .. Brocks Performance Dealer ..
Gen 2 ZX14R Best ET 8.43 , Best MPH 164.95
posted September 16, 2011 01:16 PM
The Red Bull car which led for the first lap missed a gear on the straight which is what allowed me to get by him with such ease. For the rest of the 9 laps he was right up my exhaust and very visible in my mirrors!!
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John Bul Racing. Malta.
posted September 16, 2011 05:55 PM
Watching the video, I see how consistant you are...Niice!!!
My question is does the boost blow the tires away at the same RPM every time?...Seems that your short shifting most of the time...
I've also noticed your a little more aggressive in your RPMs in the S turns, but you can be 500-1000 RPM higher in all the other turns...Then that redbull car wont have a chance!!!
Im sure you have a tach, and are you able to see it clearly?...Did you ever dyno the car and check to see how accurate the tach is to the dyno?
posted September 17, 2011 01:13 AM
Straight speeds are between 130 & 140 MPH. The straight is up hill and not that long compared to other tracks. Could keep picking with higher gearing and a longer straight.
Thanks crotchrocket for the interest. Tach on the car doesnt work. Being a centrifugal supercharger, there is no sudden woosh of boost, power delivery is very smooth and it reaches highest boost at top revs and the boost curve is a perfectly straight line since it is centrifugal and pulley driven.
Kibblewhite valve train, Falicon knife edge -2mm rods and MTC tall deck pistons are all fantastic components which seem to giving the reliability!
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John Bul Racing. Malta.
posted September 17, 2011 06:12 AM
John, thanks for the video it was fun to watch. one thing I was wondering will they allow you to have a auto shifter it seems like it would free up some time for you and some of the shifts looked like you were losing some time, you would still have to downshift but when you come out of the corner all you would have to do is drive.
posted September 18, 2011 02:26 PM
That looks like an awesome way to spend track time.
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Get on the shortbus boys 'cause its time to get schooled.
2007 ZX-14
1.38 60ft
9.03 @ 149mph
8.95 @153 small shot n2o
8.68 @160mph 5lbs boost
posted October 01, 2011 02:38 AM
We already run a flatshifter on the car which allows full throttle clutchless upshifts and clutchless downshifts. Gears are still changed manually via gear lever as per regulations.
We are now fabricating a new exhaust sidewinder manifold to remove the heat from under the sump which in a ten lap race is boiling the oil in the sump and ending up going over the finish line with the oil temp at 140 degrees celcius!! New exhaust should take the heat away from the sump. Will let u all know how it goes.
Someone on this forum once complained hi sMTC pistons that went after a few 1/4 mile passes...........this car running flat out for a whole weekend at a time with 11.5 psi of boost has ran the same MTC pistons for over a year now and still going strong.
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John Bul Racing. Malta.
posted October 01, 2011 04:25 PM
Edited By: dubious on 2 Oct 2011 00:30
Hey John,
Awesome video!
Glad you have had good luck with the MTC pistons.
Phil at MTC are great people to deal with!
You should send them some info, and pics, Im sure they would appreciate it, and might help your discounts on future parts.
I think Robert was using the wrong pistons High compresssion Nitrous pistons in a boosted condition is NOT ideal, and additionally he was likely detonating bad to squeeze the ring grooves shut.
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posted September 16, 2011 06:04 AM
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