• Required reading for all forum users!!!

    Welcome!
    Register to access the full functionality of the GSResources forum. Until you register and activate your account you will not have full forum access, nor will you be able to post or reply to messages.

    A note to new registrants...
    All new forum registrations must be activated via email before you have full access to the forum.

    A Special Note about Email accounts!
    DO NOT SIGN UP USING hotmail, outlook, gmx, sbcglobal, att, bellsouth or email.com. They delete our forum signup emails.

    A note to old forum members...
    I receive numerous requests from people who can no longer log in because their accounts were deleted. As mentioned in the forum FAQ, user accounts are deleted if you haven't logged in for the past 6 months. If you can't log in, then create a new forum account. If you don't get an error message, then check your email account for an activation message. If you get a message stating that the email address is already in use, then your account still exists so follow the instructions in the forum FAQ for resetting your password.

    Have you forgotten your password or have a new email address? Then read the forum FAQ for details on how to reset it.

    Any email requests for "can't log in anymore" problems or "lost my password" problems will be deleted. Read the forum FAQ and follow the instructions there - that's what we have one for...

  • Returning Visitors

    If you are a returning visitor who never received your confirmation email, then odds are your email provider is blockinig emails from our server. The only thing that can be done to get around this is you will have to try creating another forum account using an email address from another domain.

    If you are a returning visitor to the forum and can't log in using your old forum name and password but used to be able to then chances are your account is deleted. Purges of the databases are done regularly. You will have to create a new forum account and you should be all set.

Did I make a mistake?

  • Thread starter Thread starter keman
  • Start date Start date
K

keman

Guest
OK, so last week when I got my Morgan carbtune, I synced my carbs without plugging the petcock vac line. Got them all nice and even too. Do I need to go back and do it again with the vac line plugged?
 
Ride the bike up past 7K rpms.( or Rev it)

If you get vibration, the sync is likely off or valves need to be serviced.
If it's smooth, you're good to go.
 
Last edited:
Hi,

That's a good question. I'm surprised it worked well enough to sync your carbs with the vacuum line open. But I agree with Mr. 1_v8_merc, run it up to 6000 rpm or so on the road. If the mirrors are still relatively clear then I guess you're OK.


Thank you for your indulgence,

BassCliff
 
keman said:
I synced my carbs without plugging the petcock vac line. Got them all nice and even too. Do I need to go back and do it again with the vac line plugged?
Click to expand...

1_v8_merc said:
Ride the bike up past 7K rpms.( or Rev it)
Click to expand...
Why do you need to ride the bike at all? :-k

Just try to run it at idle. If it runs rough, the carbs are NOT synchronized.
shrug2.gif


By the way, the difference in throttle opening is much larger at idle than it is at highway speeds.

Let's say that the carbs need to be opened 5% to run at idle. (I have no idea what the actual number is, I am just using this as an example.) Because of the unplugged vacuum line, you had to turn that carb down to about 1% open to match the others. When you plug that vacuum "leak", three of your carbs will still be at 5% and one will be at 1%. Now, when you get them to half throttle to get down the road, three of them are going to be at 55% and one at 51% (almost as much). Not much of a difference. It's still just four points different, but at idle, that one carb is only open one-fifth as much as the others, instead of "almost as much".

That is why I am more concerned about synchronizing my carbs at idle, not at "highway speeds".

.
 
I'd resync. You just dumped $100 on a sync tool.
 
Re do the job. I made the same mistake of not plugging the vacuum line. The crazy readings I got made me think and I realized I forgot to plug the line. IT makes a big difference
 
It'll have to wait for me to get the better adapters from z1. Its pretty smooth now. But I tend to be a little "retentive" about things on this bike... Guess I need the practise anyway.
 
I would, you basically synched them with a vacuum leak. Might not make a difference but Id sure want to find out for sure
 
keman said:
Pics no work...?
Click to expand...

Must be your firewall.

Take small allen head screw of appropriate thread size
Drill hole down center of screw
Use copper tubing (sold at hardware stores) and glue into place with epoxy
Install small O-ring (not shown in photos)

Very easy and cheap.
 
Thanks. I appreciate all of the input.

I was thinking I was going to redo it, part of me was hoping the consensus would be that it makes no difference, so long as I got them all in line. Then I could have talked myself out of it.

Oh well, I'm all over redoing it...
 
Last edited:
Ed, still no pics!!

I installed adapters on each inlet tube and have rubber plugs on them, ala Kawasaki Z1. Makes synching real easy, no more removal of hex screws and installing adapters to do the synch.
 
Re-sync, definitely.

Guess how I know this... :rolleyes:
 
You should be able to hook up the tool without pulling the fuel tank. It should be easy enough to verify the synch. Why not check it and let us know what you find? My guess is that your synch is way off.
 
Tank is still off. Just don't want to mess with the stupid plastic adapters again and don't have the parts to build metal ones right now. I'll get the nice set from Z1 when funds are available. Meanwhile she can just wait!
 
You must log in or register to reply here.
Back
Top