Dyno: 490 RWHP and 395 TQ, T-61 single
11-06-06, 09:15 AM
#1
Dyno: 490 RWHP and 395 TQ, T-61 single
Just did 490 hp and 395 torque on a t-61 with the HKS log manifold. The turbo was VASTLY overworked, and wouldnt even hold peak boost much past 5500 or so. Street driving is nothing short of frightening.
11-06-06, 10:05 AM
#3
Racing Rotary Since 1983
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congratulations!!!!!!
that's a super run for a T61 that makes maybe 60 pounds per minute.
this would be a good spot to make some comments as to how your AI methanol injection system helped you. that turbo had to be sweating bullets.
howard coleman
that's a super run for a T61 that makes maybe 60 pounds per minute.
this would be a good spot to make some comments as to how your AI methanol injection system helped you. that turbo had to be sweating bullets.
howard coleman
11-06-06, 10:32 AM
#6
Originally Posted by howard coleman
congratulations!!!!!!
that's a super run for a T61 that makes maybe 60 pounds per minute.
this would be a good spot to make some comments as to how your AI methanol injection system helped you. that turbo had to be sweating bullets.
howard coleman
that's a super run for a T61 that makes maybe 60 pounds per minute.
this would be a good spot to make some comments as to how your AI methanol injection system helped you. that turbo had to be sweating bullets.
howard coleman
11-06-06, 10:33 AM
#7
Originally Posted by pluto
great number for the turbo size. From your torque numbers, I guess you were running around 23psi peak and taper down to 20psi?
Trevor was tuning, and the motor was built by Glen Weaver at AZRotaryRockets.com.
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11-06-06, 04:34 PM
#9
Originally Posted by howard coleman
congratulations!!!!!!
that's a super run for a T61 that makes maybe 60 pounds per minute.
this would be a good spot to make some comments as to how your AI methanol injection system helped you. that turbo had to be sweating bullets.
howard coleman
that's a super run for a T61 that makes maybe 60 pounds per minute.
this would be a good spot to make some comments as to how your AI methanol injection system helped you. that turbo had to be sweating bullets.
howard coleman
I would imagine Jrat's car can't hook until at least 100mph in street trim with 400ft lbs of torque.
11-06-06, 05:41 PM
#11
Originally Posted by 1Revvin7
I've never been able to figure out why people use a turbo larger than that on the street...
I would imagine Jrat's car can't hook until at least 100mph in street trim with 400ft lbs of torque.
I would imagine Jrat's car can't hook until at least 100mph in street trim with 400ft lbs of torque.
Eh, its a little sporty up in the revs, but not uncontrollable. Since I have ET streets for the track, I dont really see a problem with a turbo upgrade.
11-06-06, 05:52 PM
#12
Darkside FD
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Originally Posted by 1Revvin7
I've never been able to figure out why people use a turbo larger than that on the street...
Of course I know it isn't that simple but I know that is the reasoning. It would be interesting to see how changing to a larger turbo affects j-rats power and response.
Hopefully he will keep us updated.
11-06-06, 10:35 PM
#16
Can't wait to see my numbers on the KAI. If you're making 490 at a turbo way out of it's efficiency range... then I can't imagine what a turbo built for that lvl of boost can do!
Congrats man.. you've got spool time and power... thats a combination I won't have with this FD.. maybe the 2nd one =)
When do you hit boost? 3.5k?
Anyway dude, grats on some numbers... go run some 1/4's
Congrats man.. you've got spool time and power... thats a combination I won't have with this FD.. maybe the 2nd one =)
When do you hit boost? 3.5k?
Anyway dude, grats on some numbers... go run some 1/4's
11-07-06, 10:44 AM
#19
Originally Posted by cozmo kraemer
I always thought people went with larger turbos to get the same volume of air at a lower pressure. If you are getting equivalent volume at lower pressure it will be producing less heat (ideal gas law). Assuming spooling characteristics are relatively similar...ie getting 25psi at 4000rpm producing 280hp...vs...getting 15psi from a larger turbo at 4000rpm producing 280hp...It would only make sense to go with the larger turbo.
Of course I know it isn't that simple but I know that is the reasoning. It would be interesting to see how changing to a larger turbo affects j-rats power and response.
Hopefully he will keep us updated.
Of course I know it isn't that simple but I know that is the reasoning. It would be interesting to see how changing to a larger turbo affects j-rats power and response.
Hopefully he will keep us updated.
Of course I will!
11-07-06, 11:12 AM
#20
Front Range Express
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Impressive numbers! I'm curious about a couple things... Do you have the P or Q trim exhaust wheel? Would you please post the dyno sheet? What type of dyno? What type of intake and exhaust port? Thanks!
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11-07-06, 01:08 PM
#22
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Dynojet:
Here's the T61 map:
Why don't you show me where you think we're at on it. 2.69 pressure ratio (22.7 psi on top of 13.44 psi ambient) and 490 at the wheels at 7119 rpm and 86F ambient temps.
Here's the T61 map:
Why don't you show me where you think we're at on it. 2.69 pressure ratio (22.7 psi on top of 13.44 psi ambient) and 490 at the wheels at 7119 rpm and 86F ambient temps.
Last edited by Trevor; 11-07-06 at 01:13 PM.
11-07-06, 04:20 PM
#25
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Originally Posted by dubulup
Displacement x RPM x VE x PR / 5660 = CFM
63.72 lb/min x 7.69hp = 490whp
about the 5th island...do I win?
63.72 lb/min x 7.69hp = 490whp
about the 5th island...do I win?
I have a question though.
Your constant (the 7.69) only figures in 13.8% more mass air flow than a piston motor. Did I miss something? Is that the new standard? I've always heard from the gurus here on the board that 23-30% more mass air flow is required to make the same amount of power as a piston motor.