Norris Designs - 830 ft/lb @ 5700 RPM (Shearer Manifold)
Apr 11, 2008, 03:45 PM
#16
I prefer engine dyno readings for a few reasons (and you will see F1, WRC, etc use these as well).
One is it good to see what your actual drivetrain loss is from the flywheel to the ground. I really do not think though that this car is losing 200hp through a gearbox. The frictional losses and heat generated by the absorption of 200hp would cook the transmission. Typically the loss is mostly a constant not a curve as I have observed in domestics that I have dyno'd both on an engine stand and then chassis dyno. The superflow that Herb sells is a very good unit.
To the subject at hand--
WOW, thats is completely awesome.
One is it good to see what your actual drivetrain loss is from the flywheel to the ground. I really do not think though that this car is losing 200hp through a gearbox. The frictional losses and heat generated by the absorption of 200hp would cook the transmission. Typically the loss is mostly a constant not a curve as I have observed in domestics that I have dyno'd both on an engine stand and then chassis dyno. The superflow that Herb sells is a very good unit.
To the subject at hand--
WOW, thats is completely awesome.
Apr 11, 2008, 03:49 PM
#17
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Why is it impossible for you not to be a dick? You're like this in nearly every thread. It was a smiple question for clarification.
Apr 11, 2008, 03:51 PM
#18
One thing I will say that makes me believe spoolup like that is possible, is that if you watch some of these videos of the ND SWB Evo 9.. it doesn't seem that laggy on the track. And that is his last year spec motor which I believe is a GT42 w/Shearer mani. Correct me if I'm wrong.
http://www.norrisdesigns.com/videos-evo9.asp
http://www.norrisdesigns.com/videos-evo9.asp
Apr 11, 2008, 03:53 PM
#19
My lord.
Apr 11, 2008, 03:53 PM
#20
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An engine dyno typically loads the motor differently than a chassis dyno. With the motors we've had tested on a SuperFlow engine dyno, the powerband is pulled way to the "left" on the graph. The sheet posted is to be expected with that type of SuperFlow engine dyno of a 4202 powered 4G63. If this is like the SuperFlow we've experienced and it looks to be, the revs are brought up and the load matched, then the motor is loaded down and has to spin the dyno back up. This process produces very early big torque but if that is the case isn't comparable to the way a motor is loaded on a chassis dyno like a Dynojet.
Check out this video and listen for them to bring the revs up, then load the motor down before it spins the dyno up slowly which should help explain why the above graph looks like it does - http://www.youtube.com/watch?v=XMe99fNU2wo
Tom
Check out this video and listen for them to bring the revs up, then load the motor down before it spins the dyno up slowly which should help explain why the above graph looks like it does - http://www.youtube.com/watch?v=XMe99fNU2wo
Tom
Apr 11, 2008, 04:14 PM
#22
Apr 11, 2008, 04:52 PM
#23
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What was the water in temp to the absorber at 7000 RPM ? As anything over 100 degrees the absorber will not hold a load and slip this will throw false numbers and would explain the jump in HP, TQ and Boost. Just a question, not pointing fingers as I respect Mr. Norris highly.
Apr 11, 2008, 04:59 PM
#24
Good questions all. It'd be awesome to see Norris come on and talk about his builds.
Just to be clear. I have zero affiliation with Norris Designs. I just wanted to post up over here what I thought was a cool result.
Just to be clear. I have zero affiliation with Norris Designs. I just wanted to post up over here what I thought was a cool result.
Apr 11, 2008, 05:13 PM
#26
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Everyone is so hyped about dyno sheets.
Can we make a record for best looking power band?
I mean this is ridiculous.
http://www.lancerregister.com/showthread.php?t=198818
Can we make a record for best looking power band?
I mean this is ridiculous.
http://www.lancerregister.com/showthread.php?t=198818
Apr 11, 2008, 05:59 PM
#27
Apr 12, 2008, 07:13 AM
#28
An engine dyno typically loads the motor differently than a chassis dyno. With the motors we've had tested on a SuperFlow engine dyno, the powerband is pulled way to the "left" on the graph. The sheet posted is to be expected with that type of SuperFlow engine dyno of a 4202 powered 4G63. If this is like the SuperFlow we've experienced and it looks to be, the revs are brought up and the load matched, then the motor is loaded down and has to spin the dyno back up. This process produces very early big torque but if that is the case isn't comparable to the way a motor is loaded on a chassis dyno like a Dynojet.
Apr 12, 2008, 08:40 AM
#29
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