32mm carb swap question

[rcskeeter]

I plan on swapping out the small factory carbs on my 98 Tour Deluxe.

I am in the process of gathering parts for the swap. Because of the cost of getting the new carbs I DO NOT want to buy the wrong ones. Does anyone know which year carb set I should buy. And also is the carb set that comes off of the V-MAX or the old GoldWing like Yamaha Venture any more desirable than the 2003 and up Royal Star 32mm carbs/?

 

Thanks for your thoughts...

 

Shane in Michigan

[Bob Myers]

You know you are going to need to machine some adapters, don't you?

[Tatonka]

Hey Shane,

 

Welcome to our riding family. You issue has been discussed quite a bit in Royal Star Tour Deluxe and Tour technical section because some have already done the switch. Also a lot of great tips in there about carb cams and rear end gears. One of our members, Pegscraper, is great on this topic as well.

 

Here is a link for a 96 carb swap, but it should get you going in the right direction.

http://www.venturerider.org/carbswap/

 

I haven't done my 98 yet although I had considered it. Think I'll ride some more this year and then consider stepping up to a somewhat younger RSTD or Venture with the larger carbs next year.

 

Ride safe.

[rcskeeter]

Thank you to all of you for your responses to my question!

 

Several days ago I bought a very clean set of carbs from a guy out of Allen Park Michigan (Detroit area). He claims they were from a 2003 Royal Star. I hope that they are indeed the 32mm set and not the 28mm. The carbs have a part number on them (MIKUNI 4XY1 00 E312). I did an internet search but was not able to find any info related to this number. I guess I wont know if the are the bigger carbs until I physically compare them to the 28mm set on my 98 Royal Star. I do not plan to get into the actual swap until late fall when I stop riding for the season.

 

I guess I am just a little apprehensive until I know I have the the right set and didnt accidentally purchase a 28mm set! That would suck. Does this make sense? I should have done more homework prior to parts hunting!

 

Thanks again!

 

Shane

Davison MI

[rcskeeter]

Update: I just cut a nice little piece of scrap balsa wood to the exact length it took to span the diameter of the carb bore then measured that piece of wood with a digital caliper. It measured out at about 31.2mm or so. So it would seem that these are indeed the larger 32mm carbs! I hope I am right.

 

Does anyone know which of the aftermarket ignition modules are the one to get? Are there several of them to choose from?

 

Thanks again,

Shane

Davison MI

[pegscraper]

It sounds like you found the right ones. If you post a picture of them up here, several of us could tell you by looking at them if they're right or not. They look totally different than the 28mm carbs.

 

Indeed, the 35mm VMX carbs would be ideal, but unfortunately they won't fit in the frame. The 32mm Venture carbs are about all there is to work with. They are a pretty easy swap.

 

The only aftermarket ignition module I know of is the Dyna 3000. I set mine for curve 5 and the 8000 rpm limit, but you'll need stronger valve springs to run that rpm. I put the VMX cams and springs in mine too, which will handle higher rpms than that. Now I wish I could set the rev limiter higher.