Smog pump supercharger
- Thread starter Thepaetsguy
- Start date
This engine after setting for a couple days or a few hours will start second pull with choke and idle all day. Idle circuit is correct.
It acts like a predator 212 governed to 2700rpms it will rev up but just before the clutch locks it just hangs there. I have tried a 75-90-130 main and zero change.
With the 75 main I reached back and turned the choke on witch dumped a ton of fuel and the kart did start to lurch forward. Could even a small amount of psi be making the valve springs weak making a governor affect?
It acts like a predator 212 governed to 2700rpms it will rev up but just before the clutch locks it just hangs there. I have tried a 75-90-130 main and zero change.
With the 75 main I reached back and turned the choke on witch dumped a ton of fuel and the kart did start to lurch forward. Could even a small amount of psi be making the valve springs weak making a governor affect?
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It will rev up very healthy with no load. Stick the chain on and it’s like it flips a 2700rpm gov switch..
I even stuck a stiffer exhaust valve spring on the intake valve. I have not touched the needle clip. I’m going to re-install the 90 main like in my 319cc kohlers and try the needle settings next. I have a nice dose of oil in the gas and zero smoke but the plug came out looking very rich?
I even stuck a stiffer exhaust valve spring on the intake valve. I have not touched the needle clip. I’m going to re-install the 90 main like in my 319cc kohlers and try the needle settings next. I have a nice dose of oil in the gas and zero smoke but the plug came out looking very rich?
I’m setting in the chair pondering as all great minds do.. and I look at the pump and think I sealed it up then it hit me.. I did not seal the diverter valve.
I walked up to it and looked and it was soaked in wet oil fuel.. Then I noticed the back rail covered in a fuel oil mix just blowing out the diverter. I think I found a problem that needs fixed before I move onto jetting or anything else.. Edit now I move onto milling slots for a 5lb rad cap into that diverter valve.
I walked up to it and looked and it was soaked in wet oil fuel.. Then I noticed the back rail covered in a fuel oil mix just blowing out the diverter. I think I found a problem that needs fixed before I move onto jetting or anything else.. Edit now I move onto milling slots for a 5lb rad cap into that diverter valve.
I went on a 8 mile trip there and back and engine runs phenomenal I notice the intake tube getting warm to the touch but no I’ll effects.
I still need a boost gauge but it’s a complete success in my book. When this small 4hp is at WOT i swear it’s going to explode though and the bwaaaaaaaa when I let off the gas after WOT just like the willys jeep with the 142 blower I love it!
I still need a boost gauge but it’s a complete success in my book. When this small 4hp is at WOT i swear it’s going to explode though and the bwaaaaaaaa when I let off the gas after WOT just like the willys jeep with the 142 blower I love it!