Super Jet Cylinder Compression
- Thread starter JPCharmin
- Start date
- Location
- Spokane valley
What is the max psi you can run a cylinder at before needing race gas?
- Location
- Grand Rapids
185 psi is 93 octane. So anything higher requires race gas mixture
- Location
- Grand Rapids
The only thing i can think of is maybe cylinders didn't have enough oil in them for the rings to make a nice seal. And by holding the button in for a few more seconds your N&S came unstuck and pump fuel into the cylinders. The Sticky N&S could also cause your engine to not idle.
Just a thought.
I remember cranking a motor with a comp tester and it read 120psi then poured so premix in the engine and turned it over a few times and rechecked and it went to 160psi.
Just a thought.
I remember cranking a motor with a comp tester and it read 120psi then poured so premix in the engine and turned it over a few times and rechecked and it went to 160psi.
Freakrider
X247
- Location
- Tampa Bay area
Many of us in Florida run 200 to 215 on 93...
im thinking the same thing.. i had the engine sitting bone dry for about 8 months..
- Location
- Ortonville, MI
Consistency in checking compression is the best way to monitor our engine. I check mine once a month just to keep an eye on the performance.
FYI in checking compression: A good little squirt of your 2 cycle in each cylinder. (remove and ground both spark plug boots). Replace and torque the spark plug in the cylinder your not checking. Give it full throttle and crank a few times. I watch each compression and note it. helps with 2 people. Hopes this helps.
FYI in checking compression: A good little squirt of your 2 cycle in each cylinder. (remove and ground both spark plug boots). Replace and torque the spark plug in the cylinder your not checking. Give it full throttle and crank a few times. I watch each compression and note it. helps with 2 people. Hopes this helps.