Cranking Pressure?

[art leong]

I just checked my cranking pressure with a compression gauge. And was shocked by the number (close to 300 pounds). The motor starts up fine without bucking. And seems to make good power, picked up 3+ mph over last years motor.
This years motor has 14.5 to 1 compression and 30 more degrees duration in the cam, than last years 12 to 1 motor.
Should I be worried about the high number?

[Chris "drooze" Wertman]

Originally Posted by art leong

I just checked my cranking pressure with a compression gauge. And was shocked by the number (close to 300 pounds). The motor starts up fine without bucking. And seems to make good power, picked up 3+ mph over last years motor.
This years motor has 14.5 to 1 compression and 30 more degrees duration in the cam, than last years 12 to 1 motor.
Should I be worried about the high number?

Holy smokes Art, last time I had that Crank Pressure was on a flat track bike that broke my foot when I was screwing around and wanted to start it "one last time" before I went to dinner (not wearing my boot).

I really dono. were at 220-218 on ours at about 12.5:1 so.....If that helps any.

[art leong]

I wonder if my hydraulic lifters are collapsing a bit decreasing cam lift and duration, when I test the motor. I almost can't believe the numbers. The motor starts to easy and runs well.
What does cranking pressure effect?

[Chris "drooze" Wertman]

Originally Posted by art leong

The motor starts to easy and runs well.

And runs records

Maybe this will help, I dont know if the calc is in Pipemax, I dont have it on this computer

http://www.not2fast.com/turbo/compre...pressure.shtml

http://www.chevyhiperformance.com/te...ion/index.html

[art leong]

Originally Posted by drooze

And runs records

Maybe this will help, I dont know if the calc is in Pipemax, I dont have it on this computer

http://www.not2fast.com/turbo/compre...pressure.shtml

http://www.chevyhiperformance.com/te...ion/index.html

Thanks Chris I saw those sites. Right now I'm wondering if there is something going on with my lifters. It just doesn't make sense that I could have such high compression numbers and stil have the car run the way it does.
The gauge is a brand new gauge so I'm going to borrow one and see if it is the same.

[Chris "drooze" Wertman]

Originally Posted by art leong

Thanks Chris I saw those sites. Right now I'm wondering if there is something going on with my lifters. It just doesn't make sense that I could have such high compression numbers and stil have the car run the way it does.
The gauge is a brand new gauge so I'm going to borrow one and see if it is the same.

What with your bore stroke and duration did it come to on the calc if you dont mind me asking ?