When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
My ‘99‘s carb need a rebuild - leaking out the overflow. I have this spare i picked up years ago and want to rebuild it and replace the current one. Going to use a Dynojet kit while at it. The spare one I have is p/n 27492-96 - the parts fiche calls for 27492-96B for my bike. Anyone know what the “B” changes are?
I have been running the Dynojet kit for about 5 years. It works well and I have the same carb you have. I rebuilt the carb in 2016 and took the advice of a friend who was a Harley mechanic to use the Dynojet kit. It's very simple, you just install new jets according to the instructions (running performance air filter, pipes etc.) then you use the drill bit that comes with the kit to install their needle. Result is a lot more low-end grunt because the bigger needle lets in more fuel off the line. After 15 years the soft parts in my carb had rotted, so I replaced all the rubber, primer pump, o-rings and gaskets. Bike runs fantastic. Also, the "B" I think only has to do with the year, but since you're doing all the jets and a rebuild I doubt any real differences will matter because you're changing everything.
^^^That right there is some great advice. Especially once you can't un-drill what you drilled...
Also, betting you boogered up the screws looking at the screwdriver you used - get a JIS screwdriver from Amazon for 10$ and prepare to be amazed... Those are not #2 phillips.
^^^That right there is some great advice. Especially once you can't un-drill what you drilled...
Also, betting you boogered up the screws looking at the screwdriver you used - get a JIS screwdriver from Amazon for 10$ and prepare to be amazed... Those are not #2 phillips.
Get rid of the screws and go with Allen Head bolts.
Get rid of the screws and go with Allen Head bolts.
Already done. 5mm socket caps in already. Changed the fuel line as well.
However I’m kinda stumped. Everything is back together. I pulled the Dynojet kit as recommended and used the stock parts as it came to me, only changing the main jet to 180. Left the 45.
However I can’t get it to stop pissing gas out of the overflow. I fabricated a 16deg incline and measured the float height at precisely 11mm about 17 times (range is 10.5 -11.6, yet as soon as it starts running (and it runs perfectly) it starts pissing fuel out the overflow, nonstop. I checked the float valve and as far as I can tell it looks clean and intact.. This is the spare carb I rebuilt using the rebuild kit - I cleaned everything sparkling new, and yet this is the situation. The Stock carb (the one that originally leaked from the overflow, causing the start of this whole debacle) already had a dynojet kit in it, judging from the emulsion tube and accelerator pump sprayer. Guess the prev owner had it installed with his stage 1. Both have a needle with a c-clip on the third position with three washers under them. However the vacuum hole on the slide doesn’t look drilled - it’s smaller then the drill bit that came with the dynojet kit I bought.
Let's address this overflow problem. First, is this the 1999 FXR2, and one of the carbs is original to it as far as you know? (I'll assume the other is off an unknown, no problem)
Is the petcock the original? (It should be a vacuum operated)
Do one or both or your carbs actually have the drain screw, external overflow nipple and brass pipe in the bowl?
Yes, the stock carb is original as far as I am aware. Disassembly shows all stock components except for the needle and keys. Has an adjustable jet of unknown origin set at the middle setting (3 positions down) with three washers below it. It has a stock emulsion tube and a 180 main jet, and a 45 idle jet. At this point I just want to repair the overflow as it ran great prior. I went to HD and bought a float valve and a bowl o-ring and installed them. Set the bowl level to 10.9mm and am about to install it back and try it out. I’ll report back in 10 min.
Slideshow: Jason Momoa's latest restoration project blends 1920s Harley-Davidsons with modern electric technology, creating some of the most unusual hybrid motorcycles ever built.
Harley-Davidson Fat Boy Becomes a Dark, Decepticon-Inspired Custom
Slideshow: Killer Custom's latest build relies on styling changes rather than performance upgrades, giving the cruiser an entirely different personality.
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.
Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.
