BlAdE
New member
Check My Add In Viper Section Thanks
BlAdE
New member
i checked my compression today, -20 out and didnt start it first, 120,120 and between 105-110 on the pto side
how does it sound?
how does it sound?
Vector88
New member
sounds normal! for some reason the compression was low on the PTO
mopar1rules
Active member
comp readings are going to be like 10lbs less on the pto than the center and mag cylinders, cause the dome of the head of the pto cylinder is larder in cc volume.
mdbauer62
Member
Why is the head different on the PTO side?
When checking compression, it is true you should warm up the machine, and open your throttle all the way while pulling or turning the motor over to the most accurate numbers?
When checking compression, it is true you should warm up the machine, and open your throttle all the way while pulling or turning the motor over to the most accurate numbers?
maxdlx
VIP Lifetime Member
they did that on the viper to allow straight jetting. On the old sleds they ran straight compression and stagered jetting. No idea why they switched it. Maxdlx