Bonneville America Forums Forums Technical Forums Performance Mods RS40mm Mikuni

Finally got to take the bike out for a 1/2 decent ride since swapping carbs
I think it has better throttle respone and defiantly pulls better on hills
Went to a local Rally and instead of climbing the range in 3rd at 70kph we manged to sit on the posted 80kph speed limit in 4th
With a bonus of 160km to 10 liters of fuel instead of 130-140 then have to switch to reserve
http://157533064_4071920279498497_5789061663615372097_n

Is this on a stock bike or did you do other mods? refresh my memory Pictures!!.

Hi Two_wheels stock 790 with open pipes and pods
Having trouble working out how to load a pic

[url=https://flic.kr/p/2kLZFHA]

[url=https://flic.kr/p/2kLVjso]

What modifications if any were needed to mount the carbs & connect the throttle cables? Stock throttle cables used?

Stock cables were used sadly tho i had to drill out the lower cable mount....so i guess that blows the warrenty on the carb's
Sadly no tps,was going to get a Fire Starter and replace the orignal cdi not sure how it will go without the tps

The bottom black knob is the enrichener, correct? Does it have a carb brace?

I understand that w/o TPS, the Igniter runs full advance.

Another question...do the RS carbs use the CVK de-icer bullet/blade electric connections?

I have the 45 mikunis, no tps and the fire starter ignition. Starts easy with half choke and no throttle.

Actual choke (air cutoff) or an enrichener (extra fuel)?

Enricher circuit.

Thanks mag10
And true no carb heaters on them ,not much of a problem here in SE Queensland we rarely see a 0 degree Celsius day

So....got to a dyno yesterday
Stock engine and ignition circuit, pods with staintune pipes also stock 16 and 42 tooth sprockets
Set the afr and checked the carbs for balance , pulled 68 hp withe first run....apparently a little rich up top
Changed the main from 135 to a 130 upped the pumps a little didnt touch the needles or pilot jets
Ended up with 69.78 hp and 53 pounnds of torque
Very happy camper here and best bang for buck i could afford

Looks good. Just for reference, if you have any future dyno runs done, ask the dyno operator to plot engine rpm instead of wheel speed...also, "STD" is the most optimistic correction factor (SAE is the least, with DIN a bit more).