You have another PM.

Tim I hear you and thanks for tyring to help. The sound that I am hearing can be heard from 50 ft away. The sound I am hearing now matter where the needles are rich or lean is the same. Its not high pitch or screacthing but more like its going to break. its a very quick eractic/vibrating almost like when your driving a stick shift real car and you go from 5th gear down to 2nd at 50mph but stuttering fat off throttle. Shit this is getting hard to explain. The only other way I can articulate it like when you hit your anti lock brakes and you hear the computer take over pumpming the breaks really fast but with bog and fat sound that pitches high then low extremley fast and very eratic.

[QUOTE=smracer31;5888072]I know it was mentioned but have you checked the carb boot yet? pull the motor out and take the boot off and pull it over your finger and inspect. if you have a small pinhole tear/hole the motor does exactly what your describing. Without taking the boot off its hard to check for leaks, and when you put it back on seal it up with some engine sealant on both ends of the boot and zip tie the big end.

Yes I have pulled the engine out and inspected the carb boot but I have not pulled the boot off the carb. I will have to try this. Is it easy to get off and then back on. I am guessing to remove it I will have to pull the ball linkage off to slip the boot off or is there another way?

That sound is unfortunately familiar...If it is what I think it is you pop open the back plate and look the crank pin and rod..the crank pin may be worn out. As I have asked before does it seem to have a lot of slop at TDC. By looking at the rod / pin you may see a gap showing wear. I hope this is not the case but from your description.....
Also does it seem to vibrate like crazy?

Hope this helps!

No slop. It has great compression and pinch at TDC. No vibrating it just sounds like it does.

What pipe are you running? I have 2 extech bigboy's with broken off baffles. Had me pulling my hair out twisting the needles all over the place with no changes.

I have the same problem with that pipe the baffle broke im using a jp-2 pipe and it works good i just don't know what kind of run time im getting

Not using a big boy.

I can't recall the modle right now but its the pipe that comes with the engine and the clutch in one box.

The nitro box is what I purchased. I am not sure if this pipe has a bafle or not.

They all have baffles.

Pull the pipe off, give it a shake and see if it has a rattle to it.

They do not all have baffles..The JP series are chamber pipes, there are no baffles in them..I am not sure about all the others, but I know for sure not all pipes have baffles, some use a multiple chamber system..shine a flashlight into the end of the pipe, if you can see the mounting tab, there is no baffle (JP3)

ok, now I know :blush:

But....
The sirio pipes do.
He bought the power pack so it is most likely the 2013, those have baffles.

No harm, no foul! You want to know how I found out..I bought a JP3 and I looked inside, and saw no baffle, so I called Ofna and said what the Hell?? My pipe has no baffle! send me another one! That was when I got educated that not all pipes have baffles:blush:

[QUOTE=PinoyCali;5884602]I'm running a Novarossi p5 head on my 24. My stock head split in 2 pieces also.

what plug are you running in this motor. you may have mentioned it already.

P4

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