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#1
09-20-2020, 08:37 PM
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Restrictor plate effects
Wondering how many guys are using a restrictor plate to slow there car down. I am running a 10.00 index so have to kill some et. I made my own from aluminum. Sized 2.00, 1.900. 1.800 1.700, 1.600. I have it below a 4 hole spacer.
I am wondering what effect the plates have on the torque curve. Can it lower the curve and make the convertor flash higher? I have the 1..600 plate now. I am finding the car is 60'ing better. Yesterday I just pulled off some 1.32 60's. Previous best was 1.35 in the summer with no plate. I have been having a problem with tire shake after installing the coil overs over the winter. I finally got them dialed in last week. After my last index race I will be taking the plates out to see what it does. I will also take the 200lbs of ballest in the trunk out. I posted a pic of one of my slips. Just seems like a low 60' for 10.00. |
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#2
09-21-2020, 06:52 AM
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Yes, your thoughts are correct!
Engines don't out right make HP, they produce first a given amount of torque at a given rpm. Math has to be done to get the HP which is durived by Torque X rpm/ 5252, so less air = Torque. Less Torque means the motor will push the converter up to a higher rpm before the stall speed is attained, and both of these means the car will be easier to hook up if you where over the edge in the first place on traction.
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#3
09-22-2020, 08:09 AM
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Mike, what is the vacuum reading at full throttle with the plate(s)?
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John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
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#4
09-22-2020, 11:22 PM
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Actually have no idea. Don't have a vacuum gauge on the car. Mabey next time out i will put one in. I think i have one laying around from 30 years ago.
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#5
09-23-2020, 06:15 AM
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That old technology still works great!
__________________
John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
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