05 "High Rev" Motors.. +18wHP +22/29wTQ!? - A Thanks To Tony, Motordyne Engineering
10-14-2005, 09:46 AM
#61
Originally Posted by Alberto
On street tires 2500-3000 is good for me at the track-with a slight slip. On slicks Ive launched as high as 6200 rpm's 
The launch found in the in-car vid in my signature was on slicks at about 4800 rpm's-pretty weak = 1.92 60ft. What do you run?
The launch found in the in-car vid in my signature was on slicks at about 4800 rpm's-pretty weak = 1.92 60ft. What do you run?
I'll have to dig up the slips to find my 0-60's. They're nothing special though. I need to practice more launching without hopping.
I've got a website designer working on the Motordyne website now. She should have it completely overhauled in a week or two. And with new stuff too!
10-14-2005, 10:36 AM
#62
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Originally Posted by Hydrazine
I bet once word gets out, the news will quickly spread to Japan and Australia too. They love this stuff every bit as much as we do.
waiting anxiously here Tony
send one down my way for evaulation on an Aus spec Ann
10-14-2005, 12:25 PM
#63
Originally Posted by Hydrazine
6200 RPM?!! I feel sorry for your tranny. Well at least it gets you the good times!
I'll have to dig up the slips to find my 0-60's. They're nothing special though. I need to practice more launching without hopping.
I've got a website designer working on the Motordyne website now. She should have it completely overhauled in a week or two. And with new stuff too!
I'll have to dig up the slips to find my 0-60's. They're nothing special though. I need to practice more launching without hopping.
I've got a website designer working on the Motordyne website now. She should have it completely overhauled in a week or two. And with new stuff too!
10-15-2005, 07:04 AM
#66
Originally Posted by 350zQ45a
Alberto,
I'm curious what you ran on street tires in stock form?
I'm curious what you ran on street tires in stock form?
2.16 60ft - 13.80 @ 100.8
2.05 60ft - 13.77 @ 101.4
2.1X 60ft - 13.86 @ 100.XX --- got hot out and I slowed down some.
This was not at Cecil county which is known for being a "fast" track, this was at a so so track, Capitol raceway in Crofton, MD....
10-15-2005, 11:07 AM
#68
Originally Posted by harrieyu
hey alberto i was looking at your video and do you lift up a little on throttle when your shifting because thats what it looks like.
10-15-2005, 01:03 PM
#70
Alberto,
I was watching and listening to your 1/4 mile in car video. It sounds like you are only about half way through 4th as you cross the finish line.
If approximatly the same happens with the REVUP engine, that would put this mod right in the thick of its power band as you approach/cross the finish line.
Check out the dyno plots and LMK what you think.
If the amount of time spent in 4 gear is even shorter on a REVUP (because of its higher RPM's), that would put an even bigger advantage to this mod. Its producing significantly more power, earlier in the curve.
EDIT:
I've re-attached Klumzyees dyno plots. Note, these are the averages of all 3pre/3post runs. (IE Not best Vs worst)
I was watching and listening to your 1/4 mile in car video. It sounds like you are only about half way through 4th as you cross the finish line.
If approximatly the same happens with the REVUP engine, that would put this mod right in the thick of its power band as you approach/cross the finish line.
Check out the dyno plots and LMK what you think.
If the amount of time spent in 4 gear is even shorter on a REVUP (because of its higher RPM's), that would put an even bigger advantage to this mod. Its producing significantly more power, earlier in the curve.
EDIT:
I've re-attached Klumzyees dyno plots. Note, these are the averages of all 3pre/3post runs. (IE Not best Vs worst)
Last edited by Hydrazine; 12-10-2006 at 07:24 AM.
10-15-2005, 02:52 PM
#71
Last Gear in the drag.
Attached is another plot at the end of the REVUP RPM spectrum. This is where it all counts for racing. Note, the purpose of tracking or draging at high RPM is not simply for the sake of running at high RPM, its to operate in the highest part of the power curve.
If racing only occured in a very narrow RPM range and at the peak HP point, then clearly the stock manifold would win every time. Its peak HP is about +2 HP over the MD mod.
But because racing occurs at a range of RPM's as determined by the transmission gear ratio spread, it is best to optimize area under the curve for the known window of operation.
In this case the Motordyne mod increases area under the curve.
The plot below shows area under the curve shifting from 3rd into 4th gear. This is where the greatest engine load occurs. And if crossing the finish line occurs at about 1/2 way through 4th gear, the last part of the race is from about 5400 RPM to 6100 RPM.
It is clear from the plot below the Motordyne mod will pull much more in the final strech of the race.
Now if we can find someone who can actually test this...
If racing only occured in a very narrow RPM range and at the peak HP point, then clearly the stock manifold would win every time. Its peak HP is about +2 HP over the MD mod.
But because racing occurs at a range of RPM's as determined by the transmission gear ratio spread, it is best to optimize area under the curve for the known window of operation.
In this case the Motordyne mod increases area under the curve.
The plot below shows area under the curve shifting from 3rd into 4th gear. This is where the greatest engine load occurs. And if crossing the finish line occurs at about 1/2 way through 4th gear, the last part of the race is from about 5400 RPM to 6100 RPM.
It is clear from the plot below the Motordyne mod will pull much more in the final strech of the race.
Now if we can find someone who can actually test this...
Last edited by Hydrazine; 12-10-2006 at 07:24 AM.
10-16-2005, 06:15 AM
#72
Originally Posted by Hydrazine
Alberto,
I was watching and listening to your 1/4 mile in car video. It sounds like you are only about half way through 4th as you cross the finish line.
I was watching and listening to your 1/4 mile in car video. It sounds like you are only about half way through 4th as you cross the finish line.
If I was staying NA Id buy an 06' and build that up, I really like the potential these motors are already showing NA.
10-16-2005, 06:31 AM
#73
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Originally Posted by Hydrazine
Now if we can find someone who can actually test this...
How long does it take to install this mod? Perhaps we can run it for some base lines on an early Wednesday/Friday, then install it in the pits, and log the changes in 60 foot, 18, 1/4 ET and mph.
10-16-2005, 11:57 AM
#74
Originally Posted by cnynracer1
I haven't dragged my Z since i got it, but prior to my Z, I used to be at LACR every friday evening dragging my 95 Turbo Se-R (380whp).
How long does it take to install this mod? Perhaps we can run it for some base lines on an early Wednesday/Friday, then install it in the pits, and log the changes in 60 foot, 18, 1/4 ET and mph.
How long does it take to install this mod? Perhaps we can run it for some base lines on an early Wednesday/Friday, then install it in the pits, and log the changes in 60 foot, 18, 1/4 ET and mph.
10-16-2005, 01:01 PM
#75
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I was under the impression the difference in the 287 and 300 hp engines was the lowwer plenum, come some one tell me all the other differences? I was thinking a 287 could be converded to a 300 with a few parts, it seems I was very wrong! 
10-16-2005, 01:05 PM
#76
Originally Posted by HockeyZ39
I was under the impression the difference in the 287 and 300 hp engines was the lowwer plenum, come some one tell me all the other differences? I was thinking a 287 could be converded to a 300 with a few parts, it seems I was very wrong!
10-16-2005, 06:21 PM
#78
Originally Posted by cnynracer1
I haven't dragged my Z since i got it, but prior to my Z, I used to be at LACR every friday evening dragging my 95 Turbo Se-R (380whp).
How long does it take to install this mod? Perhaps we can run it for some base lines on an early Wednesday/Friday, then install it in the pits, and log the changes in 60 foot, 18, 1/4 ET and mph.
How long does it take to install this mod? Perhaps we can run it for some base lines on an early Wednesday/Friday, then install it in the pits, and log the changes in 60 foot, 18, 1/4 ET and mph.
I suck at 1/4 mile consitancy. easily +/- 0.25 seconds or more in my G. So there is no way I could test it in a remotely scientific manner. Its all about driving skill. If this mod could take a 10th off times that would be great, but it would be a hard thing to reliably measure on the track without a good driver.
How many slips and what were your times? I'm thinking you would still need to demonstrate at least one day of fairly consistant runs in your Z to qualify. Otherwise the test results will have less confidence.
I suppose another way to road test it is to get two similar Z's side by side from a roll in 3rd or 4th. If they consistantly produce the same results it would make a fair test to put the mod on one of them and re run the test.
At least it would take driving skill out of the equation.
Better yet, you could even run from a roll in 3rd or 4th against your own time to a specified distance or speed...
What do you guys think?....
10-16-2005, 08:28 PM
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Originally Posted by Alberto
Valve timing on intake and exhaust valves as opposed to just the intake. The cams, pistons, rods, rod bolts are all different I believe. You already know the plenum is different. Not sure if the crank is the same/different yet, some believe it may be different. The redline is 7100 rpm's also, not 6600 anymore.
With your reflash your redline is 7100 on your 287 right Alberto?