Group K 780 Big Bore - What Carb Setup?

[motojunkie96]

Hey y'all,
Looks like I've got a brand new Group K 780 (61X/61X) motor coming my way next weekend!:Banane01: Anyways, it lacks a fuel system (actually it has an MRP fuel injection, but I think I'm going to opt for carbs) So my question now is, what carbs to run? I have a set of dual 38s and a set of dual 44's - what do y'all think would be the better option? Also, any recommendations on jetting - I'll be running a B-pipe as well.

Any and all comments would be greatly appreciated!!!

Thanks!

 

[aqua]

umm.....the bigger ones. above about 740cc you will be better off using the 44's....so i have read anyway. is groupk building this for you?

 

[mosquini]

Well if money was an issue I would just use the dual 44's but if you could get your hands on some 46's or 48's that would be optimum. pm supertune and he should help you out with the rest. He is a great guy and a genius with anything Ski related. unless you have like super porting and not just a freestyle port job I would step up but 44's would suit you for now.
just my 2 cents

 

[motojunkie96]

I was thinking the 44's as well.....no Group K is not building it for me, I'm buying it off a guy who just had it built that he was going to put into a racing Blaster, but has decided to get out of skis altogether. I'm about as giddy as a lil kid right now!!!

 

[FLY6584]

I was thinking the 44's as well.....no Group K is not building it for me, I'm buying it off a guy who just had it built that he was going to put into a racing Blaster, but has decided to get out of skis altogether. I'm about as giddy as a lil kid right now!!!

A little off topic, but you wouldn't happen to know what kind of blaster hull that guy had that he was planning on racing? Is he on the boards? Shoot me his contact info if you know if he's looking to get rid of a hull. Thanks:biggthumpup: