Hi I bought a 02 Viper SLP pipes, jetted, SRX crank and heads, aftermarket front and back suspension, and a thing on handlebars that shows temperature of each cylinder. Supposedly it had a fresh top end right before i bought it. Well on a recent trip to hurley it was fouling plug on middle cylinder and running good at low rpm but kicking in and out at mid and high range. The middle cylinder was running from 100-150 degrees below other two. Tore down and found a broken reed. Does anyone have suggestions on what type of reeds I should replace them with. Also compression check showed psi from 80-90 on all cylinders. What is good compression given the srx heads ect.? Any and all information would help thank you
On an accurate guage 80 -90 psi cranking compression is quite low, before you look for issues borrow another guage and try again to see if you get the same numbers. It is a positive sign that all cylinders have the same numbers.
When using SRX heads on Viper cylinders the surface of the SRX heads is usually machined to maintain descent compression numbers...there are lots of members that have more knowledge of this process then I do as I have never done it.
The stock Yamaha reeds are good on these sleds so you would not be wrong by buying OEM pedals and if it were me I would be replacing all the reed pedals. Carbon Tech reed pedals are a good alternative as well.
The "thing on the handle bars" that shows temps is an EGT guage[exhaust gas temperature]
Bob
When using SRX heads on Viper cylinders the surface of the SRX heads is usually machined to maintain descent compression numbers...there are lots of members that have more knowledge of this process then I do as I have never done it.
The stock Yamaha reeds are good on these sleds so you would not be wrong by buying OEM pedals and if it were me I would be replacing all the reed pedals. Carbon Tech reed pedals are a good alternative as well.
The "thing on the handle bars" that shows temps is an EGT guage[exhaust gas temperature]
Bob