Car surges on the dyno
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Teching In
Joined: Oct 2005
Posts: 24
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Car surges on the dyno Hello,
I have been working on LS2 with a Kenne Bell blower. The motor is actually installed in a 1969 Camaro. Every time we dyno the car, it seems to surge on the dyno (bounce). The power curve looks like a sine wave going up and down about 30 hp through out the pull. My peak is around 540 hp at the rear wheels. The car can do more with a smaller pulley, but I need to clear this problem up first.
Has anyone seen this problem? The run sounds good and looks good on the scanner. The timing comes up and holds around 21 degrees. No knocking. The O2 sensors both look good through the entire pull. Talked to Tony W who had a similar problem. He felt the fuel was fluttering and the lines need to be revised. I just re-did the fuel lines again to try to address this issue and it did not help.
For fuel I am using a Stainless Steel tank
Bosh 040 intake pump
8an line from the tank to Summit in-line filter
8an line from the filter to an Areomotive “Y” block on the firewall
Two 6an lines out the Areomotive “Y” block to each areomotive fuel rail (one to each fuel rail)
Out of each fuel rail to a Aeromotive regulator (with two 6an inlet and 6 an return)
I then have a 6an return line back to the tank
I have been working on LS2 with a Kenne Bell blower. The motor is actually installed in a 1969 Camaro. Every time we dyno the car, it seems to surge on the dyno (bounce). The power curve looks like a sine wave going up and down about 30 hp through out the pull. My peak is around 540 hp at the rear wheels. The car can do more with a smaller pulley, but I need to clear this problem up first.
Has anyone seen this problem? The run sounds good and looks good on the scanner. The timing comes up and holds around 21 degrees. No knocking. The O2 sensors both look good through the entire pull. Talked to Tony W who had a similar problem. He felt the fuel was fluttering and the lines need to be revised. I just re-did the fuel lines again to try to address this issue and it did not help.
For fuel I am using a Stainless Steel tank
Bosh 040 intake pump
8an line from the tank to Summit in-line filter
8an line from the filter to an Areomotive “Y” block on the firewall
Two 6an lines out the Areomotive “Y” block to each areomotive fuel rail (one to each fuel rail)
Out of each fuel rail to a Aeromotive regulator (with two 6an inlet and 6 an return)
I then have a 6an return line back to the tank
