Post by Pit Boss on Aug 4, 2011 21:04:54 GMT -5
As most of you know I have been having problems with my motor. Still trying to get the bugs out of it.
It is fine in the lower rpm's but falls on its face on the top end. I have been messing with the jetting to no end. It has gotten a little better, but still not right. It ran decent in peoria and then faltered again at the peat monster the following weekend.
Under no load it will rev to the moon. Under load it struggles to get past 6, even in first gear. When I get air born the revs don't really come up. I have never had the rev limiter kick in. I have changed everything that I could possibly think of.
Things that I have changed include:
Coil
Msd box
Wires
Plugs went from heat of 8 to 7 and closed up the gap a little
Air Cleaner
Jetting
reset valve lash..... did it again
Fuel pressure as well as flow are fine
fuel filter changed
Checked grounds and ran msd box straight from the battery.
unhooked tach
I am no carburetor expert. I bought mine from a friend and had one o my buddies build it. He has been running them for many many years and has a drag car that runs in the 6's. He has his own stuff to work on let alone help me out and really hate to pester him. I am going to swap it out with a different carb just to see what shakes.
Is there something in the circuts on the metering block that could be wrong. There are no power valves as well. The fuel levels in the bowls are spot on.
Is there something that I am missing. I think that I am down to my last straw. The only other thing that I can think of is to try a colder plug. I would not think that I would need a 9, but hey you never know.
So throw something at me.
thanks
jenks
It is fine in the lower rpm's but falls on its face on the top end. I have been messing with the jetting to no end. It has gotten a little better, but still not right. It ran decent in peoria and then faltered again at the peat monster the following weekend.
Under no load it will rev to the moon. Under load it struggles to get past 6, even in first gear. When I get air born the revs don't really come up. I have never had the rev limiter kick in. I have changed everything that I could possibly think of.
Things that I have changed include:
Coil
Msd box
Wires
Plugs went from heat of 8 to 7 and closed up the gap a little
Air Cleaner
Jetting
reset valve lash..... did it again
Fuel pressure as well as flow are fine
fuel filter changed
Checked grounds and ran msd box straight from the battery.
unhooked tach
I am no carburetor expert. I bought mine from a friend and had one o my buddies build it. He has been running them for many many years and has a drag car that runs in the 6's. He has his own stuff to work on let alone help me out and really hate to pester him. I am going to swap it out with a different carb just to see what shakes.
Is there something in the circuts on the metering block that could be wrong. There are no power valves as well. The fuel levels in the bowls are spot on.
Is there something that I am missing. I think that I am down to my last straw. The only other thing that I can think of is to try a colder plug. I would not think that I would need a 9, but hey you never know.
So throw something at me.
thanks
jenks