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Author Topic: Confused about main jet size  (Read 695 times)

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Offline Really?

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Confused about main jet size
« on: October 24, 2010, 01:38:10 PM »
I pulled 105's out and put 110's in because of the MAC 4-1 I added to the bike.  I look at the chart at the link below and it says it should of had 120's in there as stock.  What's right?

http://www.salocal.com/sohc/tech/carb/asmpg_mgs/jetgraph.htm

Should I put 125's in it?
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I don't have a motorcycle, sold it ('85 Yamaha Venture Royale).  Haven't had a CB750 for over 40 years.

The Wife's Bike - 750K5
The Kid's Bike - 750K3

Offline Really?

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Re: Confused about main jet size
« Reply #1 on: October 24, 2010, 02:08:34 PM »
Found http://www.motorcycleproject.com/motorcycle/text/specs.html in the FAQs.

I have 657B carbs so the main jet is right.

Is this part of the de-tuning I have read about through the years?
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I don't have a motorcycle, sold it ('85 Yamaha Venture Royale).  Haven't had a CB750 for over 40 years.

The Wife's Bike - 750K5
The Kid's Bike - 750K3
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