RS36 Carb Sync

[eric_banks32]

Does anybody have a write up on how to sync these carbs. I have a manometer but read a post on another forum about not using one with these carbs and just bench syncing them. Thanks

 

[blowerbike]

familiar name you have..
bench sync and tune.
mixture screw 1/2 turn out max.
if you make the slides different from one another then the bike will not run correctly till the throttle is wide open.
i have no clue how a person would gauge sync these carbs.
i have always done what i posted above with perfect results.

 

[Steve]

I have a manometer but read a post on another forum about not using one with these carbs and just bench syncing them. Thanks

Why would you NOT want to do the job properly? :-k

I don't know anything about those carbs, but I would guess that the basic procedure would be pretty much the same.

.

 

[rapidray]

About 25 years ago I had a GS 1100 come in to have 36 RSs installed. Bench sync was spot on but the bike would NOT idle right, no matter what I tried. Figured it wouldn't hurt to try throwing my 4 gauge Motion Pros on for a try. Sure enough, that fixed the idle & the bike ran awesome! Been doing it that way since with the same results. I didn't have to move them very much but it made all the difference in the world.
Ray.

 

[eric_banks32]

Ok, manometer it is. I googled it and came up with a post on a gsxr forum with a couple guys talking about only being able to bench sync them. Something about vacuum leaking past the slides and out the top of the carb. Didn't make a whole lot of sense to me. That's why I asked. Thanks

 

[blowerbike]

i have never experienced that with RS's.
they do seem to go out of sync quite a bit if the bike is a daily rider.

 

[CivilRock]

Eric,
Here's the Mikuni instructions on how to sync the carbs. This should get you 98% of the way there. Apparently the fine tuning is finished with traditional carb syncing somehow, but I'm not entirely clear how that's done yet.

I'm going to try it right now and see if I can sync with the tops off.

Kevin

 

[CivilRock]

Diagram.
-Kevin

 

[eric_banks32]

Thanks, That's what I was looking for.

 

[CivilRock]

You're welcome.
Here's the whole maual:
http://blackyninja.files.wordpress.com/2008/05/sudco-mikuni-tuning-manual.pdf

 

[posplayr]

No matter what the manual says, I would certainly heed first hand advice, especially 30 years of it.

 

[eric_banks32]

Got them synced using the manometer. Thanks for the input guys!

 

[blowerbike]

never ever in 25 years have i on the RS's.
never ever a problem....ever...

 

[CivilRock]

Got them synced using the manometer. Thanks for the input guys!

Sweet!

How did you do it?
How far were they off?
What bike?

Thanks,
Kevin

 

[eric_banks32]

Its an 1100e. I bench synced them with some wire as the manual says and reinstalled them. Then put the manometer on and they were all over the place. So I played around some seeing if the tops on or off made a difference and it didn't so I went about syncing them as normal. Seems fine. A lot smoother idle than before and no more pop through the carbs.

 

[CivilRock]

Thanks. I read your post and went out and did the same thing. The tops on or off didn't seem to make any difference in the readings, but I would make an adjustment, then put the top back on to make sure while it was still running. I only adjusted 1 and 4 and by the time they were equal to 3, 2 had leveled out too. I got them to within 1cm and called it good.

Smoother idle, less vibration.

I lost some of that loping idle sound though. (sad face)

-Kevin

This was my initial reading. Didn't take a pic with them level, but they ended all within 1cm

 

[rapidray]

Guys, I don't just make this stuff up. It is good to see some of you taking the initiative to listen to someone that has found a better way. Ray.