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May 13th, 2007, 11:24 AM
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#1 | | Rookie 10+ posts
Join Date: Aug 2004
Posts: 10
| I installed a set of V&H Big Shot staggered pipes along with a Hypercharger on my 97 Heritage. Had the HD shop rejet the stock carb and it seems they may have over jetted it. When I am crusin around 120 kms especially up hill I can smell gasoline and also seem to be using more gas since they did the work.
How hard is it to put a smaller jet in and how can I insure it is the right size ?
Any help would be greatly appreciated !! |
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May 13th, 2007, 06:32 PM
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#2 | | Has posted 500+
Join Date: May 2007 Location: Calgary, Alberta
Posts: 667 Model: '07 Harley Davidson ElectraGlide Classic Interests: Riding the bike (and the wife!)
| Not sure about installing the jet kit on a Heritage specifically, but I am about to untake the rejetting on my Sporty sometime within the next week or so. I had a buddy of mine "demonstrate" it for me by "stripping" the bike (removed the gas tank, air cleaner kit and carb)... didn't really seem bad at all. The big thing to be careful of is nut stripping out the bolts and jets... I guess that it is not real difficult to strip them out. I bought the jet kit off eBay for like $20... everyone I have spoken to via eBay who bought and installed the jets have been BIG TIME impressed. Good luck, bro! |
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May 13th, 2007, 06:33 PM
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#3 | | Moderator Has posted 500+
Join Date: Jul 2005
Posts: 4,291
| if you have your service manual, it is a piece of cake to change the jets....it has pics and great explanation.....
a readers digest condenced version.....remove the bowl on the carb, carefully remove the old jet and install the new one.....it does sound like you may be a bit on the rich side..... |
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May 14th, 2007, 04:07 PM
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#4 | | Administrator Frequent Posting Club
Join Date: Jan 2005
Posts: 1,241 Model: Harley FLHX Occupation: Web Developer by day, 25+ years of carb building by day, hey what happened to my day?!
| Most are able to pull the carburetor without removing the fuel tank, so that could save some time and hassle. Once you have the carb pulled off, rejetting is fairly straight forward. Following these Harley Carburetor Jetting instructions should get you going. |
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May 19th, 2007, 06:00 PM
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#5 | | Rookie 10+ posts
Join Date: Aug 2004
Posts: 10
| Chucktx
A 175 main was installed, do you know what a stock main is ? |
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May 20th, 2007, 09:56 AM
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#6 | | Has posted 500+
Join Date: Apr 2006 Location: Charlotte, NC
Posts: 1,055 Interests: Anything outdoors (climbing, backpacking, fishing, Mtn biking, riding) Occupation: Chemistry teacher
| Not sure but I think either 160 or 165 main is the right one...  |
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May 20th, 2007, 02:34 PM
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#7 | | Moderator Has posted 500+
Join Date: Jul 2005
Posts: 4,291
| if i remember correctly, 165 was the stock one.... |
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May 20th, 2007, 09:15 PM
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#8 | | Administrator Frequent Posting Club
Join Date: Jan 2005
Posts: 1,241 Model: Harley FLHX Occupation: Web Developer by day, 25+ years of carb building by day, hey what happened to my day?!
| Personally I don't think a 175 main jet is too large for your Evo Heritage, and a jet that size shouldn't have that much effect on mileage. The main jet kicks in between 3/4 to full throttle. If you are smelling gas and mileage is suffering that much then I suspect other problems. Could be the float level is set too high allowing fuel to be overflowing through the vent. Another problem could be the check ball in the accelerator pump nozzle is not seating, and fuel is being syphoned out.
Have you checked your plugs yet for fouling? |
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May 21st, 2007, 09:59 AM
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#9 | | Rookie 10+ posts
Join Date: Aug 2004
Posts: 10
| Yes, I changed out the plug's before my last run. Started to smell gas right after the shop re jetted it so it looks like the 175 main is the issue. I tried to lean it out a bit yesterday which caused it to sputter. What's your thought on installing a Stage 1 kit ? Heard this is the alternative to getting the stock HD carb back to where it should be, as HD had to follow emmission guide lines over the past years. |
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Jun 3rd, 2007, 09:51 AM
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#10 | | Administrator Frequent Posting Club
Join Date: Jan 2005
Posts: 1,241 Model: Harley FLHX Occupation: Web Developer by day, 25+ years of carb building by day, hey what happened to my day?!
| On a typical 80" Evo a 175 main jet is not that big. You may find after changing it that you are still having the same problem. Just my theory, but as mentioned before I still think there is something else going on causing this problem. |
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Jun 14th, 2007, 08:09 PM
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#11 | | Rookie 10+ posts
Join Date: Jun 2007 Location: Colorado Springs, CO
Posts: 21 Model: 2005 FLSTF , 1990 FLSTF, 2002 FLSTF Interests: Bikes, Race Bikes, Vacations Occupation: Construction Estimator
| Listen to Ken, he is right that the 175 jet is not to large, we have a 1990 EVO with a modified CV Carb and we run a 180 main jet and it get 50+ miles per gallon all the time. Ken knows his stuff, he modifys these carbs all the time. |
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Jun 21st, 2007, 08:20 PM
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#12 | | Rookie 10+ posts
Join Date: Aug 2004
Posts: 35
| I've re-jetted the carb on my dyna a couple of times trying to match it with the pipes I happen to have on. My 'gas smell' problem went away after removing a .030 shim off of my needle valve. I still have a .030 shim on it (nothing more than a very small washer) and the smell dissappeared, or isn't as bad. The main jet on my Kiehin is at 190 and the slow jet is at 45 and getting around 43-46 mpg. with Khrome Werks slip ons. All of that on a '01 TC. |
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Jun 26th, 2007, 08:53 AM
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#13 | | More than 100 posts!
Join Date: Aug 2004 Location: Boise, ID
Posts: 117 Interests: Keeping Momma Happy Occupation: Airplane Pilot
| I don't really have anything to add for IceFire. For Chucktx I do:
I have a heck of a hard time reading the posts that follow yours. I find myself staring at your Avitar, and waiting to see those puppies pop out. Damn good bra, I guess.  |
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Jun 26th, 2007, 09:15 AM
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#14 | | Has posted 500+
Join Date: Jan 2007 Location: Michigan
Posts: 541 Model: Harley 02' Heritage Classic Interests: Riding Occupation: Riding - Semi Retired
| Yeah...what SkyKing says. Not that we don't care, but ya sure make it tough for us to pay attention to what you have to say.  |
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Jun 26th, 2007, 10:40 AM
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#15 | | Moderator Has posted 500+
Join Date: Jul 2005
Posts: 4,291
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Jun 26th, 2007, 02:27 PM
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#16 | | Has posted 500+
Join Date: Jan 2007 Location: Michigan
Posts: 541 Model: Harley 02' Heritage Classic Interests: Riding Occupation: Riding - Semi Retired
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Jun 26th, 2007, 06:21 PM
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#17 | | Moderator Has posted 500+
Join Date: Jul 2005
Posts: 4,291
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Jun 27th, 2007, 04:01 AM
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#18 | | Has posted 500+
Join Date: Jan 2007 Location: Michigan
Posts: 541 Model: Harley 02' Heritage Classic Interests: Riding Occupation: Riding - Semi Retired
| Awesome...but I gues I'm on my own, the wife's at work.  |
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Jun 27th, 2007, 09:02 AM
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#19 | | Has posted 500+
Join Date: Jun 2004
Posts: 1,923
| Sounds to me like the float may be off, when they changed jets they removed the float bowl and they have to get the pump rod back in the right place.
175 isn't too big, but the main is usually rich on the stock carb anyway, there is not an emission test for WOT, so the 165 is usually ok for a filter and some pipes.
It might be a bit rich for those long shots, had to rejet my carb when pulling off the thunderheader and putting on my longshots, bike couldn't pull through 70 MPH.
Best bet is to bump the pilot jet one size, leave the main alone and drop in a sporty needle, adjust the air mix screw. That's all there is to it.
If you smell fuel your gas line is leaking or the float may be sticking. |
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