surfish95747
Active Member
Okay guys, I rebuilt the top end with new rings, new exhaust valves and set the valve clearances to within spec, most are right at .003", a couple are at .0025" and one is at .005 and .006". The ones that were really out of spec I replace to bring them within acceptable ranges. I just synced the carbs and tested compression. I got 135, 130, 125 and 135 for compression. I have riden it around for the last week and took a picture of the plugs.
This was from cylinder one but all four look exactly the same. I'll get a picture of all for together. I have a MAC 4-2-1 exhaust. Does this look lean or rich to you? I get a little popping on decelleration and at high rpms, like around 7000 or 8000 I fell like the bike doesn't get enough gas to it like it chokes very slightly. There is a slight rattle as well. What do you think? 1980 cb750k.
Well, I did some more research on my own and still can't tell if my plugs look too lean or too rich. It looks close to either one really. Picture for comparison.
So, I have a Dynojet jet kit and according to them I will only use their Stage 1 kit, since I have stock airbox and stock type K&N filter and stock carbs with a MAC 4-2-1 exhaust. Do you guys recommend using this kit or just simply going up a size on the jets?
I have popping at times (not all the time) on deceleration only and when getting into the higher RPMs sometimes it feels like the engine chokes a little or cannot get the juice it needs to be there. It is just very very subtle. Other than that the bike starts right up, warms up and idles right at 1100 no problem. Thanks guys.
This was from cylinder one but all four look exactly the same. I'll get a picture of all for together. I have a MAC 4-2-1 exhaust. Does this look lean or rich to you? I get a little popping on decelleration and at high rpms, like around 7000 or 8000 I fell like the bike doesn't get enough gas to it like it chokes very slightly. There is a slight rattle as well. What do you think? 1980 cb750k.
Well, I did some more research on my own and still can't tell if my plugs look too lean or too rich. It looks close to either one really. Picture for comparison.
So, I have a Dynojet jet kit and according to them I will only use their Stage 1 kit, since I have stock airbox and stock type K&N filter and stock carbs with a MAC 4-2-1 exhaust. Do you guys recommend using this kit or just simply going up a size on the jets?
I have popping at times (not all the time) on deceleration only and when getting into the higher RPMs sometimes it feels like the engine chokes a little or cannot get the juice it needs to be there. It is just very very subtle. Other than that the bike starts right up, warms up and idles right at 1100 no problem. Thanks guys.