pinboy122
New member
hey all, im having trouble getting any good info on my waverunner650.i just bored it .060 over and dont know if i need to re-jet.if i leave the stock jet will it run leaner or richer?my brain is confused please help!
DoktorC
Member
If you're worried turn the high speed screw out 1/2 a turn and do a plug chop. I doubt .060 will make much difference in terms of jetting especially since Yami waverunners are VERY safe right from the factory.
pinboy122
New member
thanks.thats the way i was leaning but its reassuring to hear it from others!
yeah, like dok said... no reason to change jetting. I bored my superjet .50 this past spring and didn't change a thing.
FEDOROV5549
New member
I've done a few engine jobs and 60 over is quite large to not go 1 or 2 jet sizes larger. Just my 2 cents.
.010 i would leave it alone.
.030 go up one size
.060 go up 2 sizes
.030 go up one size
.060 go up 2 sizes
DoktorC
Member
On a 650 it won't be necessary to change jets...if you want to be safe give the highspeed adjustment an 1/8th or 1/4 turn out. It's not nearly as sensitive as a sled AND it's jetted WAY safer.
I didt see it was a only a 650DoktorC said:
I had a Yamaha GP 1200 R
Imagine boring that sucker .060
DoktorC
Member
tomseal6 said:
Now that would be sweet!!