What mods have you done from standard?
my stock engine 85 is strong but i wouldn't say it has no low/mid?
Hoony, I apologies for the delay, I had the flu and haven’t been near the computer.
I am keen for your thoughts, I picked up a second hand pipe that has no markings/ name plate. Recon it’s a DG. The pipe is overall fuller & maybe slightly longer than the standard one.
I cleaned up the ports by matching and providing smooth transitions. The barrel is a later model style & from factory, larger ports and the back transfer ports are position slightly towards the back than the 86.
I jetted high by 8 above standard, ( I think standard jet is 170 so its now at 178) when its not up at operating temp it’s has “twice” been a bit boggy in the mid/ top end so I intend to drop the needle down (currently mid clip position) but when hot, it goes mental.
Why I jetted high is because of the lager pipe and plenty of fuel to keep the engine cool. Obviously if it starts to splatter then lean back. Leaner normally makes them run snappier so no sure, how this relates to no / little, low-end power.
I have kept alloy clutch plates so rotating mass is light.
I had the bike since 86 and I remember it being more linier before I stopped racing it in 1991. Maybe 20 later on I have forgotten??? I hope to be going for ride with some work mates, one races vets on a CR450F and another that has CR480, CR500…1984, KX500… 1983, KX500…2000 so I hope to get some opinions from these dudes.
