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GS850gz carb balance

fastbysuzuki

fastbysuzuki

Forum Mentor
Past Site Supporter
Hi
I have a Motad 4 into one exhaust system the bike has a standard air box is it better to set the carbs all the same on the Morgan carbtune or better to have the centre two cylinders set slightly lower as the Suzuki manual?
 
same

same

fastbysuzuki said:
Hi
I have a Motad 4 into one exhaust system the bike has a standard air box is it better to set the carbs all the same on the Morgan carbtune or better to have the centre two cylinders set slightly lower as the Suzuki manual?
Click to expand...

Set them the same. The reason to set the inner cylinders lower with the stock exhaust is because of the exhaust scavenging that occurs with that setup.
 
Any bike that has a cross over in the exhaust system should have the two inner cylinders a bit lower, as was the case with your bike stock. If there's no crossover they should all be the same level. Nice exhaust system you have there. Post a picture of it when you get a chance.
 
DANG! that bike is mint. You guys sure get the better paint schemes. Beautiful bike.
 
jsandidge said:
Set them the same. The reason to set the inner cylinders lower with the stock exhaust is because of the exhaust scavenging that occurs with that setup.
Click to expand...

Sorry for hijacking the topic a bit.

With a stock 4-into-2 exhaust, what's the adverse consequence of setting all 4 to the same vacuum level?

The GS550L shop manual recommends a difference of 1/2 of the diameter of the ball in a gauge that uses tubes w/ balls. What if you have dial gauges?
 
jabcb said:
Sorry for hijacking the topic a bit.

With a stock 4-into-2 exhaust, what's the adverse consequence of setting all 4 to the same vacuum level?

The GS550L shop manual recommends a difference of 1/2 of the diameter of the ball in a gauge that uses tubes w/ balls. What if you have dial gauges?
Click to expand...

Set them all the same. The difference of the half ball is nothing.
 
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