Topic: Ball Bearing Carb Bench Sync (PD Carbs)

[Deltarider]

If anyone has done a bench sync then found no adjustment needed on a manometer sync, please speak up, maybe add engine condition or whatever you may have done there.

http://forums.sohc4.net/index.php?topic=89623.msg1004403#msg1004403

[brewsky]

OK, here's a video:
http://s193.photobucket.com/albums/z313/brewsky_2007/cb550/?action=view&current=Afterballbearingsync.mp4

[Deltarider]

Well done, Brewski, you've got style. Wouldn't be a bit surprised if that's the way carbs were set by the manufacturer (and the synchro by manometers was left to the dealers).

[TwoTired]

I'm wondering if you've been a salesman all your life?   


While watching the video I began thinking it could be incorporated into some Rube Goldberg Art.

http://coolmaterial.com/roundup/rube-goldberg-machines/

[brewsky]

I'm wondering if you've been a salesman all your life?   

Not all, but part (after retirement)

The Goldberg links are great!

[lucky]

For the 1977-78 CB750,
"Nowhere in the manual does it mention sticking ANYTHING under the slides!
Matter of fact there should be free play in the throttle cable and the slides should all be bottomed out.

[Bailgang]

For the 1977-78 CB750,
"Nowhere in the manual does it mention sticking ANYTHING under the slides!
Matter of fact there should be free play in the throttle cable and the slides should all be bottomed out.

So I take it that if the Honda service manual doesn't mention it then it therefore must be wrong? Wow what a revelation, and here all this time I was getting ready to purchase Hondamans book. What a waste of money that would be being everything I need or should or would ever want to know is right there in the Honda manual not to mention that ANY deviation what so ever from what the Honda manual says must be wrong. Someone should fill Hondaman in on this news so he can pull his book off the shelves and just do reprints of factory manuals. We might want to let the moderators of this site know as well so they can delete the tips and tricks part of this site because it too must be a load of BS. Shame on any of us for even considering coming up with a procedure that Honda didn't think of first.

[phil71]

i just spit my coffee out onto my keyboard. Thanks Bail!

[bollingball]

From 750resurrection
Speaking of that, it's been a long time - does the black mark on the oem copper ex rings go up or down ? (ask frikkin Honda why...)

 AND... do the flapovers around the ring (seam line circling one side of the rings) go in toward engine or out toward pipes ? Some time I don't know if people are joking or not.

Ken

[lucky]

For the 1977-78 CB750,
"Nowhere in the manual does it mention sticking ANYTHING under the slides!
Matter of fact there should be free play in the throttle cable and the slides should all be bottomed out.

So I take it that if the Honda service manual doesn't mention it then it therefore must be wrong? Wow what a revelation, and here all this time I was getting ready to purchase Hondamans book. What a waste of money that would be being everything I need or should or would ever want to know is right there in the Honda manual not to mention that ANY deviation what so ever from what the Honda manual says must be wrong. Someone should fill Hondaman in on this news so he can pull his book off the shelves and just do reprints of factory manuals. We might want to let the moderators of this site know as well so they can delete the tips and tricks part of this site because it too must be a load of BS. Shame on any of us for even considering coming up with a procedure that Honda didn't think of first.

Read more carefully. I said 1977-78 carbs. Early carbs are different.

But it does not matter really. When you sync your carbs those slides WILL have to come up. You will get to the same place anyway.

[Bailgang]

Read more carefully. I said 1977-78 carbs. Early carbs are different.

But it does not matter really. When you sync your carbs those slides WILL have to come up. You will get to the same place anyway.

If it doesn't really matter then what's all the fuss about? When I first read this topic I understood it completely, I didn't see anything inherently wrong with it I simply saw it as just another twist on an old procedure nothing more nothing less but never in my wildest dreams did I think it would hit 80+ replies mostly debating if it is a waste of time or not. The OP could very well be wasting his time especially if he's going to back it up with a vac sync but as long as it's not my time he's wasting then I couldn't care less what bench sync method he chooses and I don't understand why anyone else would either. I too don't see anything spectacular about this ball bearing procedure in fact the ONLY person I would highly recommend this procedure to is someone who suffers for obsessive compulsive disorder and tell them to back it up with a DIY vac sync. This ball bearing procedure combined with a vac sync using a DIY manometer might to keep someone with OCD busy for a while. However I none the less applaud the OP for filling us in on this.