I've got preignition from 1/4 to 3/4 throttle,only when hot,i've got uni pods delkivic is slipons,40 pilot jet 117.5 main jet,4 turns out on air fuel mixtue,91 octane in the tank,lifted needles one step high,help
downshift.
Did that!!
Quote from: Shane4371 on June 17, 2016, 09:07:53 PM
Did that!!
didn't help,turbo blue 106 octane stops it tho,91 to 9e octane doesn't help
is this a recent development? pinging in all gears when hot?
what rpm are you shifting at?
Ok my ignition is stock,it's been a issue for some time,in 55th gear at 55 full throttle ping ,from
11st to 2nd full throttle ping,323rd gear at 35 mph full throttle pi,only when hot,not cold
go one step colder on your spark plugs.
what sprocket and gear are you running?
17/41 gears,i got nvm iradium plugs,could be the issue?
Ngk
good gearing, go a step colder on the plugs and see if that does it.
if you are weighing in over 300 lbs with rider and gear that will have an effect when bike is hot.
I used to have the same problem when hot.
I run
155 air bleeds
42.5 pilots
118 mains up 1 from center on the needles.
.880 on the floats.
no pings anymore no matter how hot it gets.
also flushed out my oil cooler that was clogged with goop.
Yep, read your plugs.
Valves adjusted? How's your (hot) compression numbers?
Not close to 300lbs,I looked the ngk iradium plug and the oem ngk plug are the same heat range.I'll check valves again.
You haven't changed fuel quality have you?
Ok,fellas I'll put this thred to rest,i've discoverd my problem,previous owner did a magnetic pickup mod to it,advanced timing,i've retarded her,no more pinging,thanks all for the help,
Quote from: Shane4371 on June 17, 2016, 09:16:38 PM
Ok my ignition is stock,it's been a issue for some time,in 55th gear at 55 full throttle ping ,from
11st to 2nd full throttle ping,323rd gear at 35 mph full throttle pi,only when hot,not cold
Those are some really interesting numbers. :-)
Quote from: FJ_Hooligan on June 18, 2016, 08:44:02 PM
Quote from: Shane4371 on June 17, 2016, 09:16:38 PM
Ok my ignition is stock,it's been a issue for some time,in 55th gear at 55 full throttle ping ,from
11st to 2nd full throttle ping,323rd gear at 35 mph full throttle pi,only when hot,not cold
Those are some really interesting numbers. :-)
I like Shane, he thinks big. Most guys just want a 6 speed.
Noel