- Location
- Ann Arbor, MI
Hey guys, I apologize if this has been discussed many times before, I tried searching but couldn't find what I was looking for...
I currently have a bone stock 650sx that I'm doing a few mods to and wanted to get your input on how I should set it up. Back when I lived in AZ I had a 650sx with a Group K sleeper kit that I loved so I wanted to build another one that at least matched that. I am going to be picking up a dual 38 carb setup with WC manifold for a price I couldn't pass up. I figure if I run into too many problems with tuning, I can just run one of the 38s and port match the stock mani. To give a little background, I am looking to set this up as a flat water freestyle-ish ski to toy around with here in MI. I know I'm wasting my time with a Kawi, but I have a soft spot for these and it was given to me by a friend who bought three, we used parts from this one to get the other two running and for my trouble he gave me the ski for free. My plan is to get it running for the rest of the summer and then install foot holds, chop the rear, d-cut the stock ride plate and install a PLD aluminum pole this winter.
The first question I have is for those of you running the dual setup, how is yours setup with regards to jetting and N/S setup? Can I run the stock jetting/ needle & seat or should I re-jet? I'm not sure how it is currently setup, I'm hoping whoever had this before me had it running well, but in the likely case that isn't true I'd like to hear what has worked for you.
I was going to send the head out to get milled as well so I wanted to know how much to have taken off? I read in another post that .035 was a good number. I read Group K's site and couldn't find any numbers regarding this...not surprised that they don't give away much. Any input from you?
Also, what other mods will I need to do to run this setup effectively? Will I be ok with porting the stock exhaust manifold and running the stock pipe with cooling mod and 3" extension in the expansion chamber or am I wasting my time? Also, I hear the stock reeds are durable but if running Boysen or another manufacturer will be more beneficial I am open to that. Also, what impeller would be best for this setup?
Any input with what you have had success with is greatly appreciated. If you have some parts you want to get rid of that would help me out, feel free to pm or post here as well.
I currently have a bone stock 650sx that I'm doing a few mods to and wanted to get your input on how I should set it up. Back when I lived in AZ I had a 650sx with a Group K sleeper kit that I loved so I wanted to build another one that at least matched that. I am going to be picking up a dual 38 carb setup with WC manifold for a price I couldn't pass up. I figure if I run into too many problems with tuning, I can just run one of the 38s and port match the stock mani. To give a little background, I am looking to set this up as a flat water freestyle-ish ski to toy around with here in MI. I know I'm wasting my time with a Kawi, but I have a soft spot for these and it was given to me by a friend who bought three, we used parts from this one to get the other two running and for my trouble he gave me the ski for free. My plan is to get it running for the rest of the summer and then install foot holds, chop the rear, d-cut the stock ride plate and install a PLD aluminum pole this winter.
The first question I have is for those of you running the dual setup, how is yours setup with regards to jetting and N/S setup? Can I run the stock jetting/ needle & seat or should I re-jet? I'm not sure how it is currently setup, I'm hoping whoever had this before me had it running well, but in the likely case that isn't true I'd like to hear what has worked for you.
I was going to send the head out to get milled as well so I wanted to know how much to have taken off? I read in another post that .035 was a good number. I read Group K's site and couldn't find any numbers regarding this...not surprised that they don't give away much. Any input from you?
Also, what other mods will I need to do to run this setup effectively? Will I be ok with porting the stock exhaust manifold and running the stock pipe with cooling mod and 3" extension in the expansion chamber or am I wasting my time? Also, I hear the stock reeds are durable but if running Boysen or another manufacturer will be more beneficial I am open to that. Also, what impeller would be best for this setup?
Any input with what you have had success with is greatly appreciated. If you have some parts you want to get rid of that would help me out, feel free to pm or post here as well.