Im hoping a few of you guys are running or have ran a mikuni 38mm vm on your bike and can give me some pro's and cons, I am able to pick one up for a good price and would like the benefits of a larger carb if I dont have to ditch the stock airbox, I know the reed cage side will fit no problem but I am not sure about the airbox side? Also if anybody can just post how this carb worked out over the stocker I would really appreciate it[img]i/expressions/face-icon-small-wink.gif[/img]

Thanks Todd

 

The carbs out there from HPD and Hot Seat have milled down inlets, or reducing rings to fit the stock airbox....hopefully that box has a modded snorkle and a K&N or you won't be see'in the most HP.

Good Luck,
Ken

 

Todd 400,

Most of the people who've gone to larger carbs, usually go for either the TMX flatslides, or the PWK "D" slide. I prefer the 39mm Kehin PWK. Rick Ritter did some flow work on the carbs (38mm Mikuni TMX, 39mm Kehin PWK and a 38mm TMX Taperbored to 42 mm) way back when. His results are that the 39mm Kehin PWK flows the best of the three. Then came the taperbored 42mm and then the 38mmTMX. I'm inclined to agree that the 39mm Kehin flows better than the 38mm Mikuni. I've had both of them on my machine and the 38 always felt it needed more flow on the top end. There was a flat spot from about 3/4 throttle on up when you could feel the carb wasn't going to flow any more. I don't have this problem with the 39mm Kehin.

It's your money, but I'd go with the Kehin.

 

Thanks Mike, The main reason im interested in the 38mm is that I can pick one up from a friend at work reasonably cheap, Everyone Ive talked to though has said the same thing so I think I will hold out and pick up a new PWK[img]i/expressions/face-icon-small-wink.gif[/img]

 

One other thing Mike, If I go with the 39mm will I lose the dash mounted choke?

 

Todd 400,

No, I still have my choke lever in the same place it always was. On the dash. The 38mmVM could be a good choice for all I know. However, since no one I know is using that big of a roundslide, it might be difficult to get information on jetting it properly.