jetting for straight pipes?

Richard305 · Post by **Richard305** » Mon Jul 04, 2016 12:48 pm

What would be approximate correct jetting for 1967 CL77 with straight pipes (no baffles) Altitude is 700ft around here.

Nick · Post by **Nick** » Tue Jul 05, 2016 11:27 pm

Probably be fine with stock jetting, but see what the plugs have to say. One size larger may be needed.

LOUD MOUSE · Post by **LOUD MOUSE** » Wed Jul 06, 2016 6:24 am

Back about 1994 I was breaking in a CB77 and a CL77 after a complete bike/engine rebuild.
The CB77 was easy to start and warm up then ride.
The CL77 would snap and pop until hot then ran OK.
I considered the actual difference between the two bikes and engines and felt the only actual difference is the exhaust.
So I jet the CL77 carbs same as the CB77 carbs.
Problem solved and to this day I jet the CL77 same as the CB77. ....................lm

Richard305 wrote:What would be approximate correct jetting for 1967 CL77 with straight pipes (no baffles) Altitude is 700ft around here.

Richard305 · Post by **Richard305** » Sun Jul 10, 2016 8:55 am

Thanks for your help

LOUD MOUSE · Post by **LOUD MOUSE** » Sun Jul 10, 2016 9:05 am

You are welcome.
I hope I helped. ..................lm

Richard305 wrote:Thanks for your help

malcolmgb · Post by **malcolmgb** » Mon Jul 11, 2016 2:23 pm

Apologies for hijacking this thread but rather than starting another similar;
I have a CL72, when the carbs were stripped I found #130 Main jets and #42 Slow jet, the Honda manual I have says #125-130 Main, #40 Slow, I have seen in the Bill Silver book different sizes again.
To complicate matters further the pistons/cylinders were +3mm giving an engine capacity of 276cc, maybe that was the reason for a difference, it is now back to std bore size, any thoughts advice welcome.

LOUD MOUSE · Post by **LOUD MOUSE** » Mon Jul 11, 2016 2:47 pm

If you don't have the HONDA recommend jets I think I can help. ..........lm

malcolmgb wrote:Apologies for hijacking this thread but rather than starting another similar;
I have a CL72, when the carbs were stripped I found #130 Main jets and #42 Slow jet, the Honda manual I have says #125-130 Main, #40 Slow, I have seen in the Bill Silver book different sizes again.
To complicate matters further the pistons/cylinders were +3mm giving an engine capacity of 276cc, maybe that was the reason for a difference, it is now back to std bore size, any thoughts advice welcome.

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jetting for straight pipes?

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