AFter reading several posts using the search function, I'm more confused than ever so I wanted to ask:

What carb model is stock in a Roadstar 1700 (2006)?
What jets are stock?
What size screws are used in the float bowl? (these are destroyed when changing jets the first time and I plan to replace with socket head type)
Is Kuryakan jet size/numbering nomenclature the same as the stock jet manufacturer?

My Twin Velocity kit came with jets and recommened using a 182.5 with free flowing exhaust systems, needle clip on 2nd groove, 37.5 Pilot Jet and 1.3 Pilot Air Bleed. If their jet size/numbering is the same as the stock jet make, then changing the main jet made no difference since 1700's come with a 182.5 stock. According to my oxygen anaylzer, the front cylinder is at 50% and the rear (which seams to run richer on these bikes) is at 17% oxygen making it extremely too rich. Readings were taken at idle. Since my bike is not fully broken in yet I cannot perform the jetting tests properly and start with a wide open throttle test and work my way back to the idle adjustments. For now, I would like to get it idling close the the proper mix of 14:1, at least on the front cylinder, and whatever the rear cylinder is running will have to suffice until I get my ported intake and see what difference it makes between cylinder mixtures. Shouldn't really make much difference, right? Why does the rear cylinder run so much richer?

Any info is greatly appreciated. I know I've asked alot of questions in this post, but I tried using the search feature to find posts here that already cover this and each time I try to go back to the page that lists the search results I get an error that this page is no longer available and I have to search again. A little frustrating and a lot time consuming. Of the posts I read, I couldn't find a simple list of stock jets, sizes, etc. for the 1700 R*.

Happy humpday!

What carb model is stock in a Roadstar 1700 (2006)

Mikuni BSR40

What jets are stock?

Mikuni 182.5 main, #35 pilot

What size screws are used in the float bowl? (these are destroyed when changing jets the first time and I plan to replace with socket head type)

Have to look that one up

Is Kuryakan jet size/numbering nomenclature the same as the stock jet manufacturer?

Yes, they both use Mikuni jets

Too bad Gram doesn't come on often as he has a lot of experience with analyzers.

The ported manifold will make some difference in that it provides a better distribution of air between the two cylinders. However, in the end the front and back will run lean/rich due to the different air flow over the cylinders (the back is more sheltered).

Your main is most likely too big. I'd start with a 172.5 and work down from there. A 170 or 167.5 seems to be where most end up with aftermarket intake and exhaust modifications.

Doc<br><br>Post edited by: DocShadow, at: 2006/12/20 13:16

Doc, help out a mechanical dunce. In my thinking the rear cylinder would be hotter due to less air flow cooling it off, why would the front be hotter?

The float bowl screw are M4 X .7 X 10(0r 15. Can't remember)

SJH55
Kuryakyn kit should come with the replacement socket head screws for the float bowl.
...Ice is the second slowest color
...Torn Down is the slowest color

RoadieFF wrote:
Doc, help out a mechanical dunce. In my thinking the rear cylinder would be hotter due to less air flow cooling it off, why would the front be hotter?

No ... you are correct.

Chaulk it up to poor typing skills.

Doc

DocShadow wrote:
RoadieFF wrote:
Doc, help out a mechanical dunce. In my thinking the rear cylinder would be hotter due to less air flow cooling it off, why would the front be hotter?

No ... you are correct.

Chaulk it up to poor typing skills.

Doc

Wow, I feel like tearing her down to the frame now. Here's my Ebay ad when I'm done.

For sale, one M* in eight boxes. Buyer needs to reassemble!

RoadieFF wrote:


For sale, one M* in eight boxes. Buyer needs to reassemble!



I can relate to that.

And when you put it back together you really do have extra parts left in the boxes.

Doc

sj

When you get that error page hit refresh and you will go back to the results page.

I bid $1 to start your bike auction, Musky. Sight unseen and in torn down condition of course.


Thanks for the tips, all! This is the place to get knowledgeable answers, quick and humorous, too!

Steve
(sjh55)<br><br>Post edited by: sjh55, at: 2006/12/20 20:49