Carb suggestions? : V-Twin Forum: Harley Davidson Forums

woodwood · 10-10-2009, 09:53 PM

Going to get rid of my 97' Road King Police stock fuel injection system and replace with carb. Has anyone done this and if so what carb did you replace it with and what are suggestions for a carb.

Thanks

Steve Handy · 10-10-2009, 09:59 PM

its hard to beat the stock 40 mm CV....

bigbadal · 10-10-2009, 10:17 PM

Quote:

Originally Posted by Steve Handy

its hard to beat the stock 40 mm CV....

My wife and I just got back from a 6,000 mile road trip through 12 western states. We have a 94 ultra and we pulled a 350 plus pound trailer that I built. The engine is still 80 inches and it has a CV carb. We went on the highest continuously paved road in the national park system (12,183 feet) and the lowest paved road (-198 feet). The carb, even though it was running rich in the high elevations, never missed a beat and worked great! In my life, constant velocity is the way to go. Alan

strokerjlk · 10-10-2009, 11:33 PM

+3 on CV

LowRiderCustom · 10-11-2009, 12:51 AM

After talking with my brother and other Harley guys, I'm going with a Mikuni carb. They are easier to tune and the bike runs so much better with it. I've changed jets on the CV many times and I still can't get it to run perfect throughout the whole RPM range.

Masonman · 10-11-2009, 02:28 AM

One question, what did the lines look like in your tank. Im at the end of a swap myself and have the pingle MM plug/adapter and fuel valve. One check valve came out when I pulled the lines but I cant get the other out. I looked in the tank and they are steel lines and appear to be welded in.. Is this right?!?! Its a 99RK. I have a Thunder Heart Ign. and polished 42 Mikuni mounted. let me know what your tank looked like inside.. thanks

Masonman · 10-11-2009, 02:31 AM

PS.. I have an HPI 48 to sell...It was on the bike a couple of months but I couldnt case down why it was dropping the front injector..Tired of messing with the MM..

03GLIDE_ · 10-11-2009, 03:33 PM

I'd go with a 40mm CV

gsxrboy96 · 10-11-2009, 09:58 PM

Quote:

Originally Posted by LowRiderCustom

After talking with my brother and other Harley guys, I'm going with a Mikuni carb. They are easier to tune and the bike runs so much better with it. I've changed jets on the CV many times and I still can't get it to run perfect throughout the whole RPM range.

The cv is a much better carb than the mikuni.... ive done back to back dyno runs with the two and the cv actually makes more torque but sacrafices peak hp(which doesnt matter). What is done to your bike and what size jets are you running? what needle?

LowRiderCustom · 10-11-2009, 11:15 PM

It has V&H Bigshots and an unknown aftermarket cam that was in the motor when I bought the bike, with a Hypercharger air cleaner. My buddy at the local custom Harley shop swapped jets a couple times so I have no idea whats in there now. It runs good but it pops coming off the throttle at high RPM's. I installed new intake/carb/exhaust gaskets so it's not that, so I figure it's the carb settings.

Jonny A · 10-12-2009, 10:36 AM

I've got an 05 FLHT with a stock CV and it works well. No problems here. Toured a few different elevations and other than oil blow by, which has nothing to do with the carb, it was fine.

Mtclassic · 10-12-2009, 11:53 AM

Quote:

Originally Posted by LowRiderCustom

It has V&H Bigshots and an unknown aftermarket cam that was in the motor when I bought the bike, with a Hypercharger air cleaner. My buddy at the local custom Harley shop swapped jets a couple times so I have no idea whats in there now. It runs good but it pops coming off the throttle at high RPM's. I installed new intake/carb/exhaust gaskets so it's not that, so I figure it's the carb settings.

No offense meant but it sounds like you just need to get your cv sorted. without knowing what cam you have you may have a mismatched cam for your build. also just because you put new gaskets on does not mean they are not leaking. just throwing jets in without knowing what is going on is not a great solution.

gsxrboy96 · 10-12-2009, 07:48 PM

Quote:

Originally Posted by LowRiderCustom

It has V&H Bigshots and an unknown aftermarket cam that was in the motor when I bought the bike, with a Hypercharger air cleaner. My buddy at the local custom Harley shop swapped jets a couple times so I have no idea whats in there now. It runs good but it pops coming off the throttle at high RPM's. I installed new intake/carb/exhaust gaskets so it's not that, so I figure it's the carb settings.

usually if its popping, the bike is fat, without knowing what cam its hard to recommend something, a bolt on mikuni may and may not cure your issues, I do know the cv can be tuned to not do that, you just have to have someone familiar enough with trial and error. also do your pipes have any baffles? chad.

LowRiderCustom · 10-12-2009, 08:53 PM

The guy at the local custom Harley shop read the plugs, so it's dialed in to the correct mixture. I do have a blown base gasket, maybe that's where it's sucking air.

mator57 · 11-08-2009, 03:10 AM

to th first that is going from efi to carb. the mikuni is a finer tuned carb but th s&s is much eiser th repair down th road if by some reason it gets to haven problems and it can make great power and fuel ecom, if tuned. th factory carb just dont have enuff screws.
i am also gathering parts to change out my 97 efi to s&S. i know pretty much th carb, intake etc. what i want to know is what is th best way to go on th elec ign so i dont have to spend time with hot oil blown in my face timing it. i put crane h4 in th lod sofetail i have. th efi has a crank sensorthat knows when top dead is there. i what th name of a good dependable yet cost effective ing. thanks to you all in advance as you may reply. it takes time to read and to answr.!