[priobe]

Jac Mac,

I see that makes perfect sense.

Here are the bore and stroke info.
4.232" X 3.784"

Cam specs

Intake and Exhaust
Lobe Separation= 111.9 Cam Deg
Valve Overlap= 23.4 Crank Deg


Intake

valve open = 14.6 Cam Deg
Centerline 115.8
Valve Close= 50.2
Duration------> 244.7 Crank Deg
lobe lift ------> .37689 IN
Valve lift-----> .65956 IN
Lobe Area ----> 30.85 IN * DEG


Exhaust
Valve Open = 60.5
Centerline = 115.8 BTDC
valve close = 8.9 ATDC
Duration----> 249.3 Crank Deg
lobe lift ----> .3789 IN
valve lift ----> .66307 IN
Lobe Area ---> 31.83 IN

Compression Ratio = 9.5:1

My driving style is mostly street driving with sometimes aggressive manner.

Please let me know if anything else is needed.

My comment about the MSD was that I was thinking it might be a MSD 6AL problem. I was told that the 6AL does not operate above 3000 rpm with the multiple spark discharge. That may be the MSD might be bad. ( I dont know anymore I am throwing up my hands)


I was also thinking of returning the carbs back to the setup list below

37 mm choke
60 idle
120 holder
f-7 Etubes
210 air
160 mains
55 bleeds

Just to see if I still have the problem.

Suggestions ????????????