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carb. jetting/adjusting.
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Izoomx2
- honda305.com Member
- Posts: 57
- Joined: Tue Dec 31, 2013 8:05 am
- Location: oklahoma city , okla.
carb. jetting/adjusting.
What words of wisdom can I get about re-jetting the carb. on my 67 305 dream? I will be fitting EMGO/DUNSTAL reverse megs with new header pipes and don't want them turning blue !! Any help with the specifics will be greatly appreciated. Thank you Jan
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LOUD MOUSE
- honda305.com Member
- Posts: 7818
- Joined: Mon Aug 15, 2005 8:23 am
- Location: KERRVILLE, TEXAS
Re: carb. jetting/adjusting.
Try stock and go from there.
Many times the pipes BLUE do to unburned GAS ./....lm
Many times the pipes BLUE do to unburned GAS ./....lm
Izoomx2 wrote:What words of wisdom can I get about re-jetting the carb. on my 67 305 dream? I will be fitting EMGO/DUNSTAL reverse megs with new header pipes and don't want them turning blue !! Any help with the specifics will be greatly appreciated. Thank you Jan
Jan
This is for Amal carbs but the principle is the same. I'm sure that there are docs out there for Keihin, too...
http://amalcarb.co.uk/downloadfiles/ama ... _guide.pdf
G
This is for Amal carbs but the principle is the same. I'm sure that there are docs out there for Keihin, too...
http://amalcarb.co.uk/downloadfiles/ama ... _guide.pdf
G
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160
'66 Matchless 350 '67 CL77
'67 S90 '77 CB400F
'61 CB72 '64 CB77 '65 CB160
'66 Matchless 350 '67 CL77
'67 S90 '77 CB400F
Jan
If you PM me your email address I have just scanned my Keihin CR race carb tuning guide. Still not 100% what you need but a good read. The Japanese can even spell carburettor properly.... :-)
There are lots of "old wives takes" about pipe blueing and how to prevent / fix it but having the correct mixture strength is the greatest help.
Have fun!
G
If you PM me your email address I have just scanned my Keihin CR race carb tuning guide. Still not 100% what you need but a good read. The Japanese can even spell carburettor properly.... :-)
There are lots of "old wives takes" about pipe blueing and how to prevent / fix it but having the correct mixture strength is the greatest help.
Have fun!
G
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160
'66 Matchless 350 '67 CL77
'67 S90 '77 CB400F
'61 CB72 '64 CB77 '65 CB160
'66 Matchless 350 '67 CL77
'67 S90 '77 CB400F
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Tim Miller
- honda305.com Member
- Posts: 242
- Joined: Mon Jan 30, 2012 6:22 pm
- Location: Pflugerville, TX
Re: carb. jetting/adjusting.
Hi Jan,
If at all possible use old header pipe's till you get it tuned.
Then make sure the total timing is correct by using a strobe timing light.
Get your jetting dialed in then install your new header pipes.
For my peace of mind I also coat the I.D of header with a high heat thermal barrier.
Tim
If at all possible use old header pipe's till you get it tuned.
Then make sure the total timing is correct by using a strobe timing light.
Get your jetting dialed in then install your new header pipes.
For my peace of mind I also coat the I.D of header with a high heat thermal barrier.
Tim
Izoomx2 wrote:What words of wisdom can I get about re-jetting the carb. on my 67 305 dream? I will be fitting EMGO/DUNSTAL reverse megs with new header pipes and don't want them turning blue !! Any help with the specifics will be greatly appreciated. Thank you Jan