exhaust

rappz7

New Member

• Oct 14, 2014

• #1

If i take of the stock 4-2s on my 1979 cb650 and replaced it with a 4-1 will i have to re-jet my carbs?

 

nrcb125

Been Around the Block

• Oct 14, 2014

• #2

Maybe? Carbs are a guess and check game, unless you've done it thousands of time.

Start by setting your pilot jet adjustments, then setting your mains, then fiddling with the needles. Make sure everything is nicely synced too.

 

X

xb33bsa

Over 1,000 Posts

• Oct 14, 2014

• #3

number one thing :
make sure the engine is in a PERFECT state of tune, that is all tuning procedures applied and running perfectly good,with the stock pipes,then swap out the pipes and tune the carbs with jetting changes if needed

 

rappz7

New Member

• Oct 14, 2014

• #4

Thanks for the input you guys.