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TOPIC: Re:how to check main jet size? Forum Tools Post New Topic Show latest posts Rules

#886205 davej (User) Platinum Boarder Posts: 18167 Re:how to check main jet size? 2 Years, 9 Months ago   Warden wrote: Just a tip... I always have a hard time reading the size numbers stamped on jets. I remembered I had a photographer's loupe in a box somewhere. Pulled it out and WOW. I can read everything on them now. The loupe is now sitting in the box of carb parts (needles and jets) so I have it when I'm working on my carbs. Priceless! (but only costs $11.15 with free shipping) on Amazon. LOL I remember last year in the parking lot of the Eagles club around midnight you took a pic with your phone then enlarged the pic and you could read/see the size perfectly.   Logged     Last Edit: 2015/05/13 14:32 By davej.   dave   The administrator has disabled public write access. #886208 Warden (Moderator) Moderator Posts: 9535 Re:how to check main jet size? 2 Years, 9 Months ago   davej wrote: Warden wrote: Just a tip... I always have a hard time reading the size numbers stamped on jets. I remembered I had a photographer's loupe in a box somewhere. Pulled it out and WOW. I can read everything on them now. The loupe is now sitting in the box of carb parts (needles and jets) so I have it when I'm working on my carbs. Priceless! (but only costs $11.15 with free shipping) on Amazon. LOL I remember last year in the parking lot around midnight you took a pic with your phone then enlarged the pic and you could read/see the size perfectly. This way is so much easier. Getting a smart phone to focus that close is a pain in the butt.   Logged       The administrator has disabled public write access. #886210 davej (User) Platinum Boarder Posts: 18167 Re:how to check main jet size? 2 Years, 9 Months ago   Warden wrote: davej wrote: Warden wrote: Just a tip... I always have a hard time reading the size numbers stamped on jets. I remembered I had a photographer's loupe in a box somewhere. Pulled it out and WOW. I can read everything on them now. The loupe is now sitting in the box of carb parts (needles and jets) so I have it when I'm working on my carbs. Priceless! (but only costs $11.15 with free shipping) on Amazon. LOL I remember last year in the parking lot around midnight you took a pic with your phone then enlarged the pic and you could read/see the size perfectly. This way is so much easier. Getting a smart phone to focus that close is a pain in the butt. I don't know you made it look pretty easy. But then again were we drunk?? No couldn't have been.   Logged     dave   The administrator has disabled public write access. #886450 jbeebe (User) Fresh Boarder Posts: 11 Re:how to check main jet size? 2 Years, 9 Months ago   [/quote] Also check the exhaust clamps mid way where the muffler section connects to the head pipes.[/quote] Ok thanks, i'll do that   Logged     The administrator has disabled public write access. #886451 jbeebe (User) Fresh Boarder Posts: 11 Re:how to check main jet size? 2 Years, 9 Months ago   Warden wrote: Just a tip... I always have a hard time reading the size numbers stamped on jets. I remembered I had a photographer's loupe in a box somewhere. Pulled it out and WOW. I can read everything on them now. The loupe is now sitting in the box of carb parts (needles and jets) so I have it when I'm working on my carbs. Priceless! (but only costs $11.15 with free shipping) on Amazon. LOL Good tip, I have a hand lens that I use for geology work, so i'll use that! Is there a consensus on whether I should pull the carb to pull the jets or leave it in and just get to it from the top? I haven't totally pulled the carb on this yet (I have rebuilt carbs before though), but i'm not opposed to it. Could the float level or PMS be causing the heavy backfiring?   Logged     Last Edit: 2015/05/14 06:14 By jbeebe.   The administrator has disabled public write access. #886452 davej (User) Platinum Boarder Posts: 18167 Re:how to check main jet size? 2 Years, 9 Months ago   jbeebe wrote: Warden wrote: Just a tip... I always have a hard time reading the size numbers stamped on jets. I remembered I had a photographer's loupe in a box somewhere. Pulled it out and WOW. I can read everything on them now. The loupe is now sitting in the box of carb parts (needles and jets) so I have it when I'm working on my carbs. Priceless! (but only costs $11.15 with free shipping) on Amazon. LOL Good tip, I have a hand lens that I use for geology work, so i'll use that! Is there a consensus on whether I should pull the carb to pull the jets or leave it in and just get to it from the top? I haven't totally pulled the carb on this yet (I have rebuilt carbs before though), but i'm not opposed to it. Could the float level or PMS be causing the heavy backfiring? The jets are in the bottom under the fuel bowl. The needle is in the top. JMO but pulling the carb won't hurt a thing and it will give you an opportunity to clean it spraying carb cleaner thru the jet ports.   Logged     dave   The administrator has disabled public write access. #886463 jbeebe (User) Fresh Boarder Posts: 11 Re:how to check main jet size? 2 Years, 9 Months ago   davej wrote: jbeebe wrote: Warden wrote: Just a tip... I always have a hard time reading the size numbers stamped on jets. I remembered I had a photographer's loupe in a box somewhere. Pulled it out and WOW. I can read everything on them now. The loupe is now sitting in the box of carb parts (needles and jets) so I have it when I'm working on my carbs. Priceless! (but only costs $11.15 with free shipping) on Amazon. LOL Good tip, I have a hand lens that I use for geology work, so i'll use that! Is there a consensus on whether I should pull the carb to pull the jets or leave it in and just get to it from the top? I haven't totally pulled the carb on this yet (I have rebuilt carbs before though), but i'm not opposed to it. Could the float level or PMS be causing the heavy backfiring? The jets are in the bottom under the fuel bowl. The needle is in the top. JMO but pulling the carb won't hurt a thing and it will give you an opportunity to clean it spraying carb cleaner thru the jet ports. oh yea, duh. Good plan. Now all I need is some time! I'm finishing up some woodworking in the garage, so in a few days once i'm finished i'll start on the R*.   Logged     The administrator has disabled public write access. #886466 davej (User) Platinum Boarder Posts: 18167 Re:how to check main jet size? 2 Years, 9 Months ago   jbeebe wrote: davej wrote: jbeebe wrote: Warden wrote: Just a tip... I always have a hard time reading the size numbers stamped on jets. I remembered I had a photographer's loupe in a box somewhere. Pulled it out and WOW. I can read everything on them now. The loupe is now sitting in the box of carb parts (needles and jets) so I have it when I'm working on my carbs. Priceless! (but only costs $11.15 with free shipping) on Amazon. LOL Good tip, I have a hand lens that I use for geology work, so i'll use that! Is there a consensus on whether I should pull the carb to pull the jets or leave it in and just get to it from the top? I haven't totally pulled the carb on this yet (I have rebuilt carbs before though), but i'm not opposed to it. Could the float level or PMS be causing the heavy backfiring? The jets are in the bottom under the fuel bowl. The needle is in the top. JMO but pulling the carb won't hurt a thing and it will give you an opportunity to clean it spraying carb cleaner thru the jet ports. oh yea, duh. Good plan. Now all I need is some time! I'm finishing up some woodworking in the garage, so in a few days once i'm finished i'll start on the R*. Make sure you clean up well after the woodworking. Sawdust and carbs don't go well together.   Logged     dave   The administrator has disabled public write access. #899184 jbeebe (User) Fresh Boarder Posts: 11 Re:how to check main jet size? 2 Years, 8 Months ago   Ok guys, so i pulled everything and this is the situation: the enricher cover seems to be cracked, but only very little. will this affect anything? the main jet is 195, pilot is the mikuni 35, and the screw is turned out 4 complete turns. the needle is non-adjustable. So as you recall, I get pretty heavy backfire when letting off the throttle... I have no AIS, VH longshots, KN intake, and a hand-ported intake manifold. How does the carb setup seem with my combo? The carbs were done by the previous owner.   Logged     Last Edit: 2015/06/26 10:36 By jbeebe.   The administrator has disabled public write access. #899238 RoadieLP (User) Junior Boarder Posts: 109 Re:how to check main jet size? 2 Years, 8 Months ago   Best bet is get a full jet like Barons. The right needle and jet selection. Your pilot and needle are too lean and your main is rich, probably to try and compensate. Never works though.   Logged     The administrator has disabled public write access.

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