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Author Topic: Rejet for drop-in K&N and stock 4-2 exhaust required?  (Read 956 times)

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Offline c_kyle

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Rejet for drop-in K&N and stock 4-2 exhaust required?
« on: April 23, 2007, 12:09:26 PM »
'79 CB650:

I ordered a K&N air filter (not pods).  I have the stock 4-2 exhaust and stock jetting, but plan to swap to a Marshall Deeptone 4-1 in the near future.  Anyone know if rejetting is required?
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Izanami, my 1979 CB650Z:  Clicky

Offline Gordon

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Re: Rejet for drop-in K&N and stock 4-2 exhaust required?
« Reply #1 on: April 23, 2007, 03:31:21 PM »
With the stock pipes, you shouldn't have to re-jet, but you may need to adjust the idle mix a little. 
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liaudio

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Re: Rejet for drop-in K&N and stock 4-2 exhaust required?
« Reply #2 on: April 23, 2007, 09:43:17 PM »
Your stock jetting will be just fine.  If you plan on getting a freer-flowing aftermarket set-up, consider jetting up 2.5 to 5, depending on the exhaust.
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Offline c_kyle

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Re: Rejet for drop-in K&N and stock 4-2 exhaust required?
« Reply #3 on: April 24, 2007, 05:05:53 AM »
OK, thanks for the replies.
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