Hey Guys i followed the porting specs as listed in the arcticals lower intake 4 mil ext. . . I got my V max running today it had 290 jets in it to begin with i figured with the porting i should go up so i went to 320 , got it started but it would bog the whole way , So i went into the shop and looked at the plugs , REALY black , So i moved the carb needle jet to the top clip to lean it out , After that It will still bog from 3800rpm - 4400 rpm then it kicks in hard and goes realy fast , and the plugs look good , what do yous think i should do , , , i was thinking maybe 300s and move the needle to the stock middle grove ?
Any help would be great
Im sure some one on here has used these porting specs
Thanks
Chris
PORTING PROBLEMS !
Chris,
Altitude, Temperature, humidy, engine condition, quality of gas, ect... all play a role and few are the same. Sounds to me like I'd try the 300's and recheck the plugs !
Altitude, Temperature, humidy, engine condition, quality of gas, ect... all play a role and few are the same. Sounds to me like I'd try the 300's and recheck the plugs !
https://www.youtube.com/watch?v=PFb6NU1giRA
"I prefer dangerous freedom over peaceful slavery." Thomas Jefferson
"I prefer dangerous freedom over peaceful slavery." Thomas Jefferson
Update Porting
Chris if you are referring to the update porting in the article section, according to my 85 mechanics guide on 84 and 85 model year V-Max's no jetting changes are necessary.
and on 83 model V-Max's changes need to be made. (see pic)
I would use egt guages if possible.
I always check spark plug burn to make sure my gauges are reading accurately.
Hope this helps.....LMK
and on 83 model V-Max's changes need to be made. (see pic)
I would use egt guages if possible.
I always check spark plug burn to make sure my gauges are reading accurately.
Hope this helps.....LMK