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Author Topic: Ignore (reposted in SOHC/4)  (Read 2222 times)

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Offline mireparo

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Ignore (reposted in SOHC/4)
« on: May 19, 2008, 09:46:12 PM »
Sorry I reposted this in SOHC/4 bikes
« Last Edit: May 19, 2008, 09:52:06 PM by mireparo »
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Offline TwoTired

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Re: '77 CB750F carb tunning
« Reply #1 on: May 19, 2008, 09:52:14 PM »
Hav you tried turning your IMS out?  What setting are you currently using?
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Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.

Offline mireparo

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Re: Ignore (reposted in SOHC/4)
« Reply #2 on: May 19, 2008, 09:53:03 PM »
What is the IMS?
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Offline TwoTired

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Re: Ignore (reposted in SOHC/4)
« Reply #3 on: May 19, 2008, 10:01:59 PM »
Idle Mixture Screw.
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Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.

Offline mireparo

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Re: Ignore (reposted in SOHC/4)
« Reply #4 on: May 19, 2008, 10:08:53 PM »
Ohh! IMS is at stock setting (according to the manual) I think it is 1 3/4 turns out.
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Offline TwoTired

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Re: Ignore (reposted in SOHC/4)
« Reply #5 on: May 19, 2008, 10:10:29 PM »
Your bike isn't stock anymore.
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Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.

Offline mireparo

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Re: Ignore (reposted in SOHC/4)
« Reply #6 on: May 19, 2008, 10:12:53 PM »
Indeed!
Is the IMS a fuel or air adjustment?
I'm guessing I should richen the idle mixture.
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Offline TwoTired

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Re: Ignore (reposted in SOHC/4)
« Reply #7 on: May 19, 2008, 10:19:51 PM »
Trick question.

The IMS adjusts the total delivery of a fuel/air mix from both the Idle Jet and the Idle Air jet.  The IMS behaves like fuel adjust, though.  Turn out to make richer, in to make leaner.  It does have a limited range of adjustment, and little effect on mixtures above about 1/8 to 1/4 throttle position where the slide needles take over the bulk of the of the fuel mixture chores.  Howevr, making this richer does help throttle response becasue if the idle is left on the rich side, less fule is need from the accelerator pump to make the engine pick up from low RPM.

Cheers,
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Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.
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