Dyno results from “Bonneville” motor, 765 WHP, 900 CHP
03-03-2011, 10:06 AM
#16
Developer
Thread Starter
Here are some answers to the questions I have seen so far:
We are reaching 18 psi of boost in the plenum, which is somewhat incredible considering how much air this engine flows.
The supercharger is a Vortech V7 YSI model. Note the cogged drive belt.
http://www.vortechsuperchargers.com/scspecsheet.php
It is running through a 928 manual transaxle equipped with high-shock fluid, a cooler, and our 8-disc LSD upgrade. I have 4 years on this transaxle.
Because it is an eddy-current dyno (2500 HP Max, the owner told me) it has no problem holding a load on this motor.
I do have video - I took it just for the audio element from in the car. It sounds amazing and is very loud. I am sure the little microphone on the recorder willnot do it justice. But I will post it when I get a moment.
We are reaching 18 psi of boost in the plenum, which is somewhat incredible considering how much air this engine flows.
The supercharger is a Vortech V7 YSI model. Note the cogged drive belt.
http://www.vortechsuperchargers.com/scspecsheet.php
It is running through a 928 manual transaxle equipped with high-shock fluid, a cooler, and our 8-disc LSD upgrade. I have 4 years on this transaxle.
Because it is an eddy-current dyno (2500 HP Max, the owner told me) it has no problem holding a load on this motor.
I do have video - I took it just for the audio element from in the car. It sounds amazing and is very loud. I am sure the little microphone on the recorder willnot do it justice. But I will post it when I get a moment.
03-03-2011, 11:32 AM
#19
Developer
Thread Starter
There were several break-points that could have stopped us.
One was finding an effective seal from the intake manifold to the heads that could handle the heat and pressures we were expecting. Especially when the heads are fully ported-out, there is even less area than before to seal on.
We already had a head on the bench and were pressure-testing gasket/sealant combos on it at temp. Later, we developed a way to test various gaskets and sealants on the head with the head in the car. The final solution holds more than 20 psi at 250 deg F without failure.
In these pictures here, you can see that in the end we pressure-tested the entire motor with shop air. Fully assembled and in the car with all systems connected. This allowed us to test every system and see if they flowed (or didn't) like we thought they should.
One was finding an effective seal from the intake manifold to the heads that could handle the heat and pressures we were expecting. Especially when the heads are fully ported-out, there is even less area than before to seal on.
We already had a head on the bench and were pressure-testing gasket/sealant combos on it at temp. Later, we developed a way to test various gaskets and sealants on the head with the head in the car. The final solution holds more than 20 psi at 250 deg F without failure.
In these pictures here, you can see that in the end we pressure-tested the entire motor with shop air. Fully assembled and in the car with all systems connected. This allowed us to test every system and see if they flowed (or didn't) like we thought they should.
03-03-2011, 02:12 PM
#23
Developer
Thread Starter
Thanks guys. I have only heard of one other that may be larger in HP, a undocumented posting in the UK from a guy who says he runs nitrous on an otherwise stock motor and claims he has 1000 HP. But, like I said, its undocumented.
This is 900 CHP at 6200 rpm for real.
This is 900 CHP at 6200 rpm for real.
03-03-2011, 02:27 PM
#24
Administrator - "Tyson"
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Does that shop give you a dyno file that can be printed out at home & over layed with other files, or do they only hand you the final sheet?
03-03-2011, 03:51 PM
#29
Developer
Thread Starter
We are planning to be there the week of Sept 14th-17th
http://www.928motorsports.com/928_land_speed.php
http://www.928motorsports.com/928_land_speed.php