Hey everyone, new member to the site but been utilizing information off of here for a while now!
I'm doing the switch from MM injection to carb and everything is going smoothly except one thing. I've got the tank off and prepping it for installing my parts when they come in and noticed the fuel line send and return hoses did not simply terminate in the tank where I can screw in the Pingel kit and be done. I've seen a ton of threads where people have posted pictures of how they removed the bit inside the gas tank, they just didn't explain much.... well now that photobucket is asking $399 for members to host photos on forums there are no pictures and I'm not real comfortable sticking anything in there to cut in a high octane environment without knowing what I should be doing. I have an air drill and one thing I thought about doing was drilling a hole in the side of the bung so that it could let fuel in. I don't know if the bit would possibly spark though. I've read that people drilled them out from the bottom, but they provided most of the info in their pictures.
Does anyone have experience doing this conversion? Or better yet maybe a picture or two? I would really like to not lose the fuel that would be below the bung. My bike has a few mods that decrease the fuel mileage quite a bit already and I'd like to keep from losing any range. Also after I saw it, I realized there is no way there'll be room for the screen in the petcock to fit in without removing the bung.
What year and model bike are you working on? I did the MMI to Carb conversion on a '98 Ultra. I drilled through the bottom of the tank inwards with a 9/16 (i think) drill bit being very careful not to booger up the threads, you needs the threads to put the pingel plug and adapted for the petcock.
Using the drill bit, it will leave about an inch or so of the hard lines inside the tank. that was good enough for me. I JUST NEVER RAN IT LOW ON GAS!
flhchaz, it's a 99 Road King with the Twin Cam. I was thinking the same thing about posting some pictures for others to be able to look at when I do all this.
Jshopes I hated to go away from EFI but with the support for parts basically zero, I knew it was either convert to Delphi or carb. I could do the zippers system and 5 years down the road need an obsolete part to get it to run (this bike is staying in the family). I had a hiccup where I thought my ECM was bad but after taking the power commander out I realized it was the power commander. Ebay had basically zero of the units for sale that work on the MM system and new the only offering was the PCV which would've required a new dyno mapping since the old one was fried and the map file long gone. Dyno tune+PCV totalling the cost of a carb swap or a zippers replacement, I decided to go with the carb. After the trivial incident (washing my bike with a waterhose) that sent the whole system into chaos, i'm not too keen on going with EFI again on something that's no longer supported as is. I'm just glad I wasn't 1000 miles from home when it happened or better yet, caught in a downpour haha!
I decided to go with the Thunderheart standalone ignition and an S&S Super G. From what I've read it'll be an increase in gas mileage and better response. At ~28 mpg right now I'd sure love the extra range.
Well I did a little cutting and drilling today. I thought I had a set of bits that went to 5/8 but I couldn't find it. So I wound up drilling out the tubes and stopping because I was locking up with 3/8 bit as it fit in the hole that's already there. Here is a picture of the progress. I used a cutoff wheel submerged in water to remove the steel line from inside. Felt risky, but it didn't go boom. Once I get it drilled out I'm going to try to cut a window in the collar from the bottom with a carbide Burr.
07-20-2017, 09:24 AM
Another FI to Carb Question
