Stefanko135
701
- Location
- Utica, Mi
650/X-2 Compression too high??
- Thread starter Stefanko135
- Start date
- Location
- Ontario CA
You'll have to run 110 octane which gets expensive is all. I have a trued and welded crank on mine and I ran it last season at 235psi. Too much for me so I'm dropping it back down to pump gas.
http://www.x-h2o.com/index.php?posts/1551718/ check this thread out.
- Location
- Ontario CA
On that thread it stated the slight lag on the first 2 seconds on the gas and that was what I was experiencing. Its at JetWorks right now getting down tuned. To much money on this ski, I just want it reliable and not a bomb ready to blow.
- Location
- Charlotte, NC
you need to know what the squish is to know what octane fuel you need to run.. the cranking compression pressure that you measured is not the most accurate way to determine octane requirements.. did you have the engine built or buy it already built??
Stefanko135
701
- Location
- Utica, Mi
91 stock 650 motor not built
- Location
- Ontario CA
If you had it ported the compression would drop a little, I lost about 10psi when I got mine ported due to larger port windows.