klx650sm2002 wrote on 12/31/69 at 16:00:03:There have been a lot of new members since the last time I asked this question so I'll ask it again, have any of You modded that horrible Savage exhaust port and with what results ?
Thanks a lot,
Clive W
I've ground the "V" section down about a 1/4" in the exhaust port and beveled the outlet opening as much as possible so that the bevelled edge just meets with the inside diameter of the exhaust gasket. The following pic at this link[url]http://members.shaw.ca/kenerechook/exhaustport.htm [/url] shows the ground out "V" section but not the additional bevelling, which I did after the head had been reconditioned in the machine shop and neglected to take a pic at that time. You must be careful when removing the "V" section, you have only so much meat between the port and the valve side of the head, (MEASURE CAREFULLY!) and remove as much material as you deem safe.
As for results: The final results will only be realized when I get the opportunity to break the new engine in properly(see "86 REBUILD" on page 3 of this forum for more info) and consequently dial in the carb (which must be done at full throttle for main jet sizing)