Gotham's GR67 Kit DYNO #'s
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Originally Posted by pluto
I think it was set to 720 on the dynojet making the torque cut in half. You can actually multiply the torque by 2 to get the correct torque #
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Still doesn't add up .... 240 x 2 is way too much tq. 240 x 1 is way too little. Am I wrong? Shouldn't the tq be around 330ish??? this is abt what you get with the 175 x 2, but someone please explain the 240 rating.
Last edited by Old Slow Coach; 07-30-05 at 05:36 PM.
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#8
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Originally Posted by III Gen X
Still doesn't add up .... 240 x 2 is way too much tq. 240 x 1 is way too little. Am I wrong? Shouldn't the tq be around 330ish??? this is abt what you get with the 175 x 2, but someone please explain the 240 rating.
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as im pretty well experienced on Dynojet machines i was interested in hearing what they had to say...
Based on what DynoJet said the 720 degree RPM setting will not cause the torque to cut by half. The problem is that Crisp6 has a graph versus Wheel speed and not Engine Speed. This graph can be off a bit sometimes.. The only way the versus wheel speed graph will be accurate for comparison sakes is if his versus RPM graph is accurate . Adjusting the RPM setting is mainly used for synching purposes as to match the dynojet to the actual engine speed if there synch correctly the torque will be accurate. rotaries can be goofy to synch sometimes as theres alot of "noise" you must use 2 secondary pickups or use the Optical sensor pick up.
Crisp: can you have your dyno shop give you a versus engine speed graph?
Based on what DynoJet said the 720 degree RPM setting will not cause the torque to cut by half. The problem is that Crisp6 has a graph versus Wheel speed and not Engine Speed. This graph can be off a bit sometimes.. The only way the versus wheel speed graph will be accurate for comparison sakes is if his versus RPM graph is accurate . Adjusting the RPM setting is mainly used for synching purposes as to match the dynojet to the actual engine speed if there synch correctly the torque will be accurate. rotaries can be goofy to synch sometimes as theres alot of "noise" you must use 2 secondary pickups or use the Optical sensor pick up.
Crisp: can you have your dyno shop give you a versus engine speed graph?
Last edited by Poweraxel; 07-31-05 at 06:12 AM.
#15
Mad Man
Well, I made 506/387@23, 480/370@20, and 449/331@18, on a .81 P trim 67, so the 330 would be right there. That was on 111 octane right up is on this forum. Carl
#16
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Originally Posted by GoodfellaFD3S
I spoke to Chris on the phone about these dyno results.....the 439 rwhp was at 16 psi.
439 sounds about the norm for that with around 16lbs, we saw a little bit more but that could be porting or anything etc. As for the torque you're probably at around 330ish best bet for pickup is the optical, the difference we have seen is well worth it.
Last edited by Zero R; 08-01-05 at 09:50 AM.
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really? so by setting up the trigger wrong, the torque would stay the same? I'm sure that there're a few dyno charts out there showing stock rx7's making 5xxrw tq on dynojet. I remembered seeing one of my dyno chart years ago making close to 1000rwtq simply by setting the trigger wrong during the dyno pull. Maybe dynojet can explain how my 13B is making more torque than a 2JZ?
Originally Posted by Poweraxel
as im pretty well experienced on Dynojet machines i was interested in hearing what they had to say...
Based on what DynoJet said the 720 degree RPM setting will not cause the torque to cut by half. The problem is that Crisp6 has a graph versus Wheel speed and not Engine Speed. This graph can be off a bit sometimes.. The only way the versus wheel speed graph will be accurate for comparison sakes is if his versus RPM graph is accurate . Adjusting the RPM setting is mainly used for synching purposes as to match the dynojet to the actual engine speed if there synch correctly the torque will be accurate. rotaries can be goofy to synch sometimes as theres alot of "noise" you must use 2 secondary pickups or use the Optical sensor pick up.
Crisp: can you have your dyno shop give you a versus engine speed graph?
Based on what DynoJet said the 720 degree RPM setting will not cause the torque to cut by half. The problem is that Crisp6 has a graph versus Wheel speed and not Engine Speed. This graph can be off a bit sometimes.. The only way the versus wheel speed graph will be accurate for comparison sakes is if his versus RPM graph is accurate . Adjusting the RPM setting is mainly used for synching purposes as to match the dynojet to the actual engine speed if there synch correctly the torque will be accurate. rotaries can be goofy to synch sometimes as theres alot of "noise" you must use 2 secondary pickups or use the Optical sensor pick up.
Crisp: can you have your dyno shop give you a versus engine speed graph?
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Hey Carl,
I thought your 506rwhp was made @25psi and your 449rwhp was made @ 20psi? Am I missing something or you accidently posted it wrong on the other thread?
I thought your 506rwhp was made @25psi and your 449rwhp was made @ 20psi? Am I missing something or you accidently posted it wrong on the other thread?
Originally Posted by Carl Byck
Well, I made 506/387@23, 480/370@20, and 449/331@18, on a .81 P trim 67, so the 330 would be right there. That was on 111 octane right up is on this forum. Carl
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The 240 # is incorrect like what NYT said. If you trace the torque curve, you'll see that the average is around 160-175rwtq. when you multiply it by two, you'll see that the actual (estimated) torque is around 320rwtq and 350rwtq, which matches up the boost level he claimed. If I have to guess, the 320rwtq one is probably around 13-14psi and the other is around 16-18psi. I think I heard that the car was tuned by Judge ito so I'm sure that Ito can tell you more about a/f ratio and timing more than anyone else. I do remember that it was tuned on pump gas last I talked to them.
Originally Posted by III Gen X
Still doesn't add up .... 240 x 2 is way too much tq. 240 x 1 is way too little. Am I wrong? Shouldn't the tq be around 330ish??? this is abt what you get with the 175 x 2, but someone please explain the 240 rating.
Last edited by pluto; 08-01-05 at 06:05 PM.
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I think your missing my point, if the customer doesnt have a clean tach reading the torque #'s will be off, period. If you seen a RX7 with 1000 RWTQ id bet the tach signal was picking up noise. The key point is once the dyno jet pick up is sync with the car and is picking up clean across the rev band there should be no doubling of torque. I am saying the Torque CAN be wrong. Thats why if Crisp can provide the dyno versus Engine Speed you can see if the tach was off.
Originally Posted by pluto
really? so by setting up the trigger wrong, the torque would stay the same? I'm sure that there're a few dyno charts out there showing stock rx7's making 5xxrw tq on dynojet. I remembered seeing one of my dyno chart years ago making close to 1000rwtq simply by setting the trigger wrong during the dyno pull. Maybe dynojet can explain how my 13B is making more torque than a 2JZ?
#22
Mad Man
Originally Posted by pluto
Hey Carl,
I thought your 506rwhp was made @25psi and your 449rwhp was made @ 20psi? Am I missing something or you accidently posted it wrong on the other thread?
I thought your 506rwhp was made @25psi and your 449rwhp was made @ 20psi? Am I missing something or you accidently posted it wrong on the other thread?
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Wait a sec, are you contradicting yourself a little here? This is what you wrote previously.
As for the 1000rwtq on my car, The number was double as stated previously since someone changed my trigger settings to 180 when I was making the pull. it will cut the rpm by half making it think I was only maxing out at 4krpm instead of 8krpm. My car usually make around 500rwtq consistantly. The most was 590rwtq at 5600rpm and 650rwhp at 6400rpm, that was back in the days with my T66.
Originally Posted by Poweraxel
as im pretty well experienced on Dynojet machines i was interested in hearing what they had to say...
Based on what DynoJet said the 720 degree RPM setting will not cause the torque to cut by half.
Based on what DynoJet said the 720 degree RPM setting will not cause the torque to cut by half.
As for the 1000rwtq on my car, The number was double as stated previously since someone changed my trigger settings to 180 when I was making the pull. it will cut the rpm by half making it think I was only maxing out at 4krpm instead of 8krpm. My car usually make around 500rwtq consistantly. The most was 590rwtq at 5600rpm and 650rwhp at 6400rpm, that was back in the days with my T66.
Originally Posted by Poweraxel
I think your missing my point, if the customer doesnt have a clean tach reading the torque #'s will be off, period. If you seen a RX7 with 1000 RWTQ id bet the tach signal was picking up noise. The key point is once the dyno jet pick up is sync with the car and is picking up clean across the rev band there should be no doubling of torque. I am saying the Torque CAN be wrong. Thats why if Crisp can provide the dyno versus Engine Speed you can see if the tach was off.
Last edited by pluto; 08-02-05 at 10:39 AM.