What compression on your 500?

[I_Duddits]

I know my engine needs a rebuild but I'm running it while I rebuild my spare.
So on the bench (it's difficult to get a good kick on the starter) I get about 115psi. Is this going to be enough to start the beast? I reckon all assembled, when I can get a good purchase on the kick starter and kick it like I stole it, I should get a 135'ish out of it.

So is 115 to 135 gonna be enough?
How much is yours? I'm trying to get a feel for the average.

[CR480R]

Are you holdin the throttle open?

[I_Duddits]

Are you holdin the throttle open?

No throttle on the bike as yet, why would it make a difference to the reading?

[bigbellybob]

Are you holdin the throttle open?

No throttle on the bike as yet, why would it make a difference to the reading?

yes it will make a difference and 135psi is low even for a 125.

[I_Duddits]

Are you holdin the throttle open?

No throttle on the bike as yet, why would it make a difference to the reading?

yes it will make a difference and 135psi is low even for a 125.

So how much should I be looking for then?

[bigbellybob]

some ware in the 190's

[I_Duddits]

some ware in the 190's

And that's with a BIG kick and the throttle fully open ?

[bigbellybob]

some ware in the 190's

And that's with a BIG kick and the throttle fully open ?

several big kicks and throttle fully opened dont stop kicking tell the gage stops moving

[bigbellybob]

also the green cases look awesome

what is the elevation your testing @

you can expect a 3-5% drop on the gage for every 1000 foot in elevation

[I_Duddits]

also the green cases look awesome

what is the elevation your testing @

you can expect a 3-5% drop on the gage for every 1000 foot in elevation

I'm at sea level. I'm going to change pistons and barrel and see if I can up the compression.