carb question
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Road Master
Joined: Oct 2007
Posts: 1,213
Likes: 1
From: Hot Springs Village AR
carb question
I am rebuilding my carb and I may need to order some parts for another project so I was going to order new jets also if I need to.
I currently have a main jet 145 and pilot jet is 50 and I'm at 3500' in the high desert does anyone know what jets I should run I do have aftermarket pipes and s&s air cleaner
Thanks for any help. 1983 xls Roadster 1000 also stock carb
I currently have a main jet 145 and pilot jet is 50 and I'm at 3500' in the high desert does anyone know what jets I should run I do have aftermarket pipes and s&s air cleaner
Thanks for any help. 1983 xls Roadster 1000 also stock carb
Road Warrior
Joined: Nov 2006
Posts: 1,441
Likes: 791
From: Heart of Dixie
RE: carb question
I believe the stock jets for an '83 are a 160 main and a 52 pilot, so your setup is already smaller that stock. Are the pipe and air cleaner mods new, or have you been using them with the 145/50 jets? If you were running the 145/50 setup with the stock intake and exhaust and it was OK, I'd think a 150/52 or 155/52 setup would be plenty at that altitude. Most of the time, some throttle chop / plug reading tuning is in order (unless you have easy access to a dyno).
I have slip-ons and aSE air cleaner on my '83, and run a 170/55 setup at elevations between 600 and 1600 feet on the average.
I have slip-ons and aSE air cleaner on my '83, and run a 170/55 setup at elevations between 600 and 1600 feet on the average.
Road Master
Joined: Aug 2006
Posts: 751
Likes: 6
From: 500 miles south from Artic Circle
RE: carb question
Any symptoms ? backfiring to carb ? hard to start in warm or cold ? need choke ?
If I understand correctly you have normal stock Keihin butterfly carb... I live here up "northpole" and here is rich mixture needed because of cold weather. I think situation in high altitude is same you need richer mixture, I have used 65/180 jets... but I do have very open mufflers and K&N type foam airfilter with opened (stock) airbox. I have tryed even 88/185 but that is too much, you foul you sparkplugs with that. You can find good procedure how to adjust your carb from Bikenet-page
That procedure "goes" with all butterfly-type carbs only jets and adjustment screws are in different places...
If I understand correctly you have normal stock Keihin butterfly carb... I live here up "northpole" and here is rich mixture needed because of cold weather. I think situation in high altitude is same you need richer mixture, I have used 65/180 jets... but I do have very open mufflers and K&N type foam airfilter with opened (stock) airbox. I have tryed even 88/185 but that is too much, you foul you sparkplugs with that. You can find good procedure how to adjust your carb from Bikenet-page
That procedure "goes" with all butterfly-type carbs only jets and adjustment screws are in different places...
Road Warrior
Joined: Nov 2006
Posts: 1,441
Likes: 791
From: Heart of Dixie
RE: carb question
ORIGINAL: sepixlh
....I think situation in high altitude is same you need richer mixture,....
....I think situation in high altitude is same you need richer mixture,....
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