32mm Carb?

slonomo · 07-30-2014, 06:11 AM

I'm ready to upgrade the carb on my VC440. What is everyone using? Geoff said to use the Suzuki Z400 carb, but they are pretty pricey, what's my options? I've seen some "chinese go kart" carbs for like $50 or less, are they worth it? What am I looking for as far as features?

Thanks

turbof250 · 07-30-2014, 08:40 AM

I just ordered a Mikuni 32mm last night and got the manifold adaptor from Geoff. Lokking aroound on Affordablegokarts.com, they look pretty easy to tune.

beachcarter · 07-30-2014, 06:16 PM

Turbo, what jetting are you using with that mikuni? I too have a mikuni but can't get it to run like I want. Best top end I got is 27mph when i first installed everything, now the best i get is 25mph after a year of use. I was hoping for low 30's when I did the engine swap. At wide open throttle it falls on its face them picks back up then stalls again. It's got great take off but top end is lacking. My buddy has a 6 seater yamaha with slight mods to the stock engine and we gps'd it at 32. He walks at from me and all he had done to his is a spring change and carb adjustment. I want more top speed of of mine.

1989Marathon · 07-30-2014, 06:24 PM

Quote:

Originally Posted by beachcarter

Turbo, what jetting are you using with that mikuni? I too have a mikuni but can't get it to run like I want. Best top end I got is 27mph when i first installed everything, now the best i get is 25mph after a year of use. I was hoping for low 30's when I did the engine swap. At wide open throttle it falls on its face them picks back up then stalls again. It's got great take off but top end is lacking. My buddy has a 6 seater yamaha with slight mods to the stock engine and we gps'd it at 32. He walks at from me and all he had done to his is a spring change and carb adjustment. I want more top speed of of mine.

Is it a Mikuni round slide carb? They are very easy to tune.

turbof250 · 07-30-2014, 06:28 PM

It is a round slide, haven't got it in yet. Going to be a few days before it is delivered. I know the needle has several settings, usually you start in the middle. What color is your plug after you run it with no time to idle?

beachcarter · 07-30-2014, 06:46 PM

I have that carb, yes it is a round slide. Just not sure what jetting I should use. I need to do another WOT run but last time I did it I ran it wide open for about 1/2 mile then while still at full speed killed it and brought it to a stop. The plug was dry and black. The problem with that carb is one installed there isn't much room for an air filter. I have a small k&n style filter on mine.

1989Marathon · 07-30-2014, 06:50 PM

It's a shame that you clone guys don't want any advice from us big-block guys. We could really help in a situation like this...

beachcarter · 07-30-2014, 06:57 PM

Quote:

Originally Posted by 1989Marathon

Is it a Mikuni round slide carb? They are very easy to tune.

Yes it is amikuni round slide but I know nothing about tuning carbs. I installed the carb as it was right out the box. I did adjust the needle and change the jet but I don't remember what the number was but it didn't help, if anything it made things worse so I put it back to the original jetting and needle position and just let it ride. It runs fine at cruising speed but doesn't have the top end I was hoping for. That was last fall and haven't messed with it since. Just rode it. In fact I haven't been on here in awhile. Gotta get back into things.

beachcarter · 07-30-2014, 06:59 PM

I will take all the advice I can get.

1989Marathon · 07-30-2014, 07:03 PM

Quote:

Originally Posted by beachcarter

I will take all the advice I can get.

I will PM you a link to a very good manual.

07-30-2014, 06:11 AM	#1
slonomo Searching for The Way Join Date: Oct 2009 Location: Medina, Ohio (NEOHIO) Posts: 11,441	32mm Carb? I'm ready to upgrade the carb on my VC440. What is everyone using? Geoff said to use the Suzuki Z400 carb, but they are pretty pricey, what's my options? I've seen some "chinese go kart" carbs for like $50 or less, are they worth it? What am I looking for as far as features? Thanks

07-30-2014, 08:40 AM	#2
turbof250 Gone Wild Join Date: Jun 2012 Location: Callahan,Florida Posts: 337	Re: 32mm Carb? I just ordered a Mikuni 32mm last night and got the manifold adaptor from Geoff. Lokking aroound on Affordablegokarts.com, they look pretty easy to tune.

07-30-2014, 06:16 PM	#3
beachcarter Gone Wild Join Date: Jun 2011 Posts: 441	Re: 32mm Carb? Turbo, what jetting are you using with that mikuni? I too have a mikuni but can't get it to run like I want. Best top end I got is 27mph when i first installed everything, now the best i get is 25mph after a year of use. I was hoping for low 30's when I did the engine swap. At wide open throttle it falls on its face them picks back up then stalls again. It's got great take off but top end is lacking. My buddy has a 6 seater yamaha with slight mods to the stock engine and we gps'd it at 32. He walks at from me and all he had done to his is a spring change and carb adjustment. I want more top speed of of mine.
beachcarter Gone Wild Join Date: Jun 2011 Posts: 441

07-30-2014, 06:28 PM	#5
turbof250 Gone Wild Join Date: Jun 2012 Location: Callahan,Florida Posts: 337	Re: 32mm Carb? It is a round slide, haven't got it in yet. Going to be a few days before it is delivered. I know the needle has several settings, usually you start in the middle. What color is your plug after you run it with no time to idle?

07-30-2014, 06:46 PM	#6
beachcarter Gone Wild Join Date: Jun 2011 Posts: 441	Re: 32mm Carb? I have that carb, yes it is a round slide. Just not sure what jetting I should use. I need to do another WOT run but last time I did it I ran it wide open for about 1/2 mile then while still at full speed killed it and brought it to a stop. The plug was dry and black. The problem with that carb is one installed there isn't much room for an air filter. I have a small k&n style filter on mine.
beachcarter Gone Wild Join Date: Jun 2011 Posts: 441

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07-30-2014, 06:50 PM	#7
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730	Re: 32mm Carb? It's a shame that you clone guys don't want any advice from us big-block guys. We could really help in a situation like this...
1989Marathon Gone Wild Join Date: Oct 2010 Posts: 6,730

07-30-2014, 06:59 PM	#9
beachcarter Gone Wild Join Date: Jun 2011 Posts: 441	Re: 32mm Carb? I will take all the advice I can get.
beachcarter Gone Wild Join Date: Jun 2011 Posts: 441

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