Restrictor plate on the ECS Paxton?
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Racer
Joined: Jun 2003
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From: West Lafayette Indiana
Restrictor plate on the ECS Paxton?
I was talking with a forum sponsor the other day and he mentioned to me that ECS system with the Novi 2000 has a "restrictor plate" installed and that it somehow increases midrange power. I also head that the A&A Vortec kit does not come with this. Could ECS and A&A please chime in here and give us the scoop?
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From: Providing the most proven supercharger kits for your C5/6/7 609-752-0321
Originally Posted by bigSS
I was talking with a forum sponsor the other day and he mentioned to me that ECS system with the Novi 2000 has a "restrictor plate" installed and that it somehow increases midrange power. I also head that the A&A Vortec kit does not come with this. Could ECS and A&A please chime in here and give us the scoop?
We use the restrictor plate on stock bottom end vehicles so we can run a smaller pully. That way boost ramps quicker yet the restrictor plates keeps the top end from over boosting. This way the vehicle stays in it's "power band" much longer.
We have sent a few to Andy a while back, but I am not aware if he uses them regularly or not. If you have any other questions feel free to ask or call us.
Drifting
Joined: Jul 2004
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From: Dallas Texas
Originally Posted by DOUG @ ECS
We use the restrictor plate on stock bottom end vehicles so we can run a smaller pully. That way boost ramps quicker yet the restrictor plates keeps the top end from over boosting. This way the vehicle stays in it's "power band" much longer.
We have sent a few to Andy a while back, but I am not aware if he uses them regularly or not. If you have any other questions feel free to ask or call us.
We have sent a few to Andy a while back, but I am not aware if he uses them regularly or not. If you have any other questions feel free to ask or call us.
Shahram
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Racer
Joined: Jun 2003
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From: West Lafayette Indiana
Originally Posted by Thrust NYC
You dont see the point. Using the same small pulley on the stock block without the restrictor plate will destroy the block. How can Doug show you a comparison dynograph?
Pro
Joined: Nov 2003
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From: Alexandria VA
Originally Posted by bigSS
No, i do see the point. If he is using a 12psi pulley, and uses a restictor plate to keep it to 8psi, then he can use THAT dyno graph and then use an 8psi pulley with no restictor plate and compare them.
Melting Slicks
Joined: Aug 2003
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Originally Posted by bigSS
No, i do see the point. If he is using a 12psi pulley, and uses a restictor plate to keep it to 8psi, then he can use THAT dyno graph and then use an 8psi pulley with no restictor plate and compare them.
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From: Providing the most proven supercharger kits for your C5/6/7 609-752-0321
Originally Posted by BlackMagicC5
Peak power would be similar, the power under the curve should be increased. A smaller pulley should let the power come on much lower in the rpm band. I'd think you would see a few lbs of boost more down low at a given rpm, vs just a larger pulley. I did something similar on the dyno with my procharged car. I used too small a pulley and had to set the rpm limiter to 5600rpm to limit boost. I only ended up with 523rwhp, but pulled off 506rwtq. I made safe hp numbers and the down low torque of a huge hp car. My example is not exactly the same, but I think its similar. Their idea is way better because you can use all the rpm's.
Your example is very close really, the only difference is with the plate you would be able to continue to red line.
A dyno graph without a plate would have about the same peak power, but a lower torque peak since boost levels are lower during the torque peak of the n/a motor itself. With the plate the power generally flatlines when the boost level flatlines. We have found that to be about 4800 rpm on up.
Melting Slicks
Joined: Aug 2003
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Originally Posted by DOUG @ ECS
Your example is very close really, the only difference is with the plate you would be able to continue to red line.
A dyno graph without a plate would have about the same peak power, but a lower torque peak since boost levels are lower during the torque peak of the n/a motor itself. With the plate the power generally flatlines when the boost level flatlines. We have found that to be about 4800 rpm on up.
A dyno graph without a plate would have about the same peak power, but a lower torque peak since boost levels are lower during the torque peak of the n/a motor itself. With the plate the power generally flatlines when the boost level flatlines. We have found that to be about 4800 rpm on up.
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From: Providing the most proven supercharger kits for your C5/6/7 609-752-0321
Originally Posted by Hammer
Doug,
Do you have a dyno graph of your kit with restrictor on a Z06?
Thanks
Jim
Do you have a dyno graph of your kit with restrictor on a Z06?
Thanks
Jim
Sure, this was Nat04ZO6's graph before the forged bottom end.
LS1's seam to flatline earlier but dont make as much power.
Last edited by DOUG @ ECS; Feb 7, 2006 at 05:46 PM.
Safety Car
Joined: Jun 2004
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From: Bella Vista Ca
I just added the restricter plate to one of Andy's Vortech kits. I was seeing as high as 13 lbs with a 3.60 pulley. Now I am seeing about 10 lbs. Using the plate saved me from having to get another dyno tune, pulley, and belt. That adds up to a lot of money saved.
The car seems to hit just as hard when I get into the boost throughout the RPM range. I would like to get another Dyno to see the difference though.
The car seems to hit just as hard when I get into the boost throughout the RPM range. I would like to get another Dyno to see the difference though.
Melting Slicks
Joined: Feb 2002
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From: Crooks SD
Originally Posted by Hammer
Doug,
How many lbs of boost were made to put down 600 rwhp?
Nice graph.
How many lbs of boost were made to put down 600 rwhp?
Nice graph.
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From: ECS Sales & Service Advisor
Cruise-In III Veteran
Cruise-In V Veteran
From Doug's post a few weeks ago... and the one that really makes me want a Novi... 
Hi guys,
I have been forgeting to post this for a while now, sorry. This car was done a few weeks ago, it is a stock ZO6 with headers.
We used a restrictor plate on this so you can see the power flatline as the boost flatlined, keeping the car at max power much longer than "peeking" there.
I have been forgeting to post this for a while now, sorry. This car was done a few weeks ago, it is a stock ZO6 with headers.
We used a restrictor plate on this so you can see the power flatline as the boost flatlined, keeping the car at max power much longer than "peeking" there.
Pro
Joined: Oct 2004
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From: Louisiana
St. Jude Donor '05-'06
Originally Posted by Mike69
Doh same graph....LOL!!!!!!!!!!!!!! 
I was looking for the big 'ol flat line from Allans car!!!!!
I was looking for the big 'ol flat line from Allans car!!!!! 
