Gonna pull the goodies off and sell them, but I have a problem. Did the CPR head mod., now I have to figure how to jet it with single pipe.
Anybody got any ideas? I remember that the PTO was lower compression than other two. This was to get even jetting across.
Now with head mod. that brings all cyl.'s to same compression, do I have trichen the PTO or lean PTO in relationship to other two cyl.'s????
Least I have the manual to get back, but the head mod. is the tweaker.
Anybody got any ideas? I remember that the PTO was lower compression than other two. This was to get even jetting across.
Now with head mod. that brings all cyl.'s to same compression, do I have trichen the PTO or lean PTO in relationship to other two cyl.'s????
Least I have the manual to get back, but the head mod. is the tweaker.
redsnake3
New member
head mod jetting
i also have the head mod from cpr and asked him about running it without the pipes. he said that the stock heads would run better with the stock pipe because of the change in compression. the change to a 3-1 pipe screws everything up. very hard to tune otherwise. try to buy a stock head from someone thats your best chance.
i also have the head mod from cpr and asked him about running it without the pipes. he said that the stock heads would run better with the stock pipe because of the change in compression. the change to a 3-1 pipe screws everything up. very hard to tune otherwise. try to buy a stock head from someone thats your best chance.