84 200x with 200 Livan ohc running lean

[Kingcricket]

I have an 84 200x the old motor was having problems so I found a brand new lifan motor for cheap. Anyway I see a lot of post on here a while back and just wondering how anybody set up there carb, when I start mine it idles perfect but when you Crack the throttle fast it just bogs. It does drive but has no power like it's running lean. Spark plug is consistently white. No mods on it either

Also I see that the carb is set up for an accelerator pump that I can't use due to the frame rail. From what I see about newer bikes this is the problem they have when there pump goes

[DohcBikes]

Pretty sure you've answered your own question.

[Kingcricket]

I was mainly wondering how anybody made it work because they all say it has more power and better running, but like I said you can't hook the accelerator pump up so how are people running there carb. I have 3 carbs from the other motor 2 brand new and it runs bad with all of them

[DohcBikes]

Do you mind posting some pictures of your engine in the frame with the intake and carb setup?

Lots of people here including myself have ran both the ohc and ohv lifans with great success, but i can't specifically remember anyone using a pumper carb. Mine have all been outfitted with keihin copies anywhere from 24mm to 27mm.

Also, can you post your engine model number please, there are lots of variations.

[Kingcricket]

I'll get some up tomorrow I took the spring and ball and jet out of the pump and it runs strong but at idle still has the bog and the plug is really clean so it's still lean, I don't like the idea of making something work like that so if there is a carb that will work I'd rather get it or jet sizes cause im running 98 main and i think 35 pilot, then the other carb is a 27mm carb running 108 main and 40 pilot but like i said bog doesn'the go away but pics tomorrow

https://www.flickr.com/photos/145046055@N07/shares/4B38a9

[Kingcricket]

https://flic.kr/p/J3jqbq

https://www.flickr.com/photos/145046055@N07/shares/4B38a9

[Kingcricket]

https://www.flickr.com/photos/145046055@N07/shares/13J923

[Kingcricket]

Engine says 161 fmj

[yaegerb]

do you have a stock 200x carb you can try? 24 VM Keihin.

[Kingcricket]

The carb that was on my old motor was a keihin I'm soaking it and cleaning it now

That carbs junk threads are stripped out on the bowl leaks everywhere motor did rev up pretty decent (still bogged) so I put the Sheng Wey back on that's the carb that came with motor

Trying to upload pics from flickr but it's not working

[Kingcricket]

https://flic.kr/p/JzjBGm

[DohcBikes]

Engine says 161 fmjThats a "150cc" (actual 145cc) engine. It will not run well with a 24mm carb. 22mm is the largest you want to run. A stock 200s carb with stock jetting would be a good startying point. Theres no need to run a pumper carb with that engine. Don't expect the performance of the larger lifans, the 150's just dont put out a lot of power.

[DohcBikes]

The carb that was on my old motor was a keihin I'm soaking it and cleaning it now

That carbs junk threads are stripped out on the bowl leaks everywhere motor did rev up pretty decent (still bogged) so I put the Sheng Wey back on that's the carb that came with motorHate to be a broken record but the stock sheng way pumper is not going to work well unless the pump is hooked up.

[Kingcricket]

Well it works with the pumper gutted so it's sucking extra gas from the pumper, but with this set up it runs great other than the slight bog at idle and running lean. So the 200cc is the 163 fml

[DohcBikes]

Ok screw it. Ignore the advice you asked for and run it that way then. :crazy:

By the way I just built and sold trike with that exact motor and used a 200s carb. Runs perfect.

[Kingcricket]

No its good advice I never bothered to double check that it wasn't a 200cc, that makes sense now why the jetting was smaller in that carb than. Guess I'll look for 200s carb

[DohcBikes]

No its good advice I never bothered to double check that it wasn't a 200cc, that makes sense now why the jetting was smaller in that carb than. Guess I'll look for 200s carbNot only the jetting but the venturi. I think I have a few 22mm carbs in my shop, if you don't find one by tuesday pm me.

[Kingcricket]

Every aftermarket carb I see for 200s is 27mm intake bore I could find 22mm carbs but they are for 125cc pit bikes. So is the 200s 22mm cause I see they have 100 stock main and 35 stock pilot. Again thanks for your help I do this as a hobby so I learn as I go.

[DohcBikes]

Ya replacement carbs these days seem to be measured by the intake flange diameter rather than the venturi diameter. Probably has something to do with the 'bigger is better' marketing strategy.

I have no experience with 200s replacement carbs so I cannot comment on them. 100 main and 35 pilot is correct for most 200s'. To make it perfectly clear, I used an OEM Honda keihin on my 161fmj project.

Also be aware that I'm not gauranteeing any jetting numbers for your engine. Especially with a replacement carb. I have however had good luck with replacement carbs on larger cc honda and lifan engines. I usually use OEM jets, as the chinese jets don't seem to be spec'd very well.

More than likely a carb listed as a 200s replacement with the jetting you mentioned should be 22m at the venturi and therefore a great candidate for the 161fmj.

Here's a couple pics of the fun I had today. These sat for 7 years. Just be grateful you only have one carb to deal with :)

233286 233287

[Kingcricket]

That's like how the main jet on the Sheng Wey carb is 98 and maybe the accelerator pump compensates that size drop, but then maybe has a bigger venturi which is why it bogs without the pump. Probably why a bigger main wouldn'the help that carb, cause I had a 108 in it and it still bogged yet was really rich while driving in the yard

But like you said probably just have to try another carb

[DohcBikes]

That's like how the main jet on the Sheng Wey carb is 98 and maybe the accelerator pump compensates that size drop, but then maybe has a bigger venturi which is why it bogs without the pump. Probably why a bigger main wouldn'the help that carb, cause I had a 108 in it and it still bogged yet was really rich while driving in the yard

But like you said probably just have to try another carbYou seem to grasp the concepts. That's wonderful.

A 98 main jet will run a 200s fine in most situations and in fact the older atc200's and a couple other models use 98 mains as well. It doesn't surprise me a bit that the 108 was fat while riding steady. Also the needle jet needle on a pumper carb will be tapered different which changes the tuning. Really can't compare the jetting specs on a pumper to one without an accellerator pump. All I know for sure from experience on that engine is that a 22mm OEM Honda Kei Hin from a 200s with no pump worked excellent.

Mind posting a link to the replacement carb you are considering?

[Kingcricket]

http://m.ebay.com/sch/i.html?_nkw=84+honda+200s+carb&isNewKw=1&isRefine=true&mfs=GOCLK&acimp=0&_trksid=p2056088.m2428.l1313.TR0.TRC0.X84+honda+20 0s+carb&sqp=84+honda+200s+carb

[DohcBikes]

That link only takes us to a search for 200s carbs, maybe you are considering this one?

http://www.ebay.com/itm/1984-1985-1986-Honda-ATC-200S-Carburetor-Air-Filter-3-Wheeler-ATC200S-Carb-/200766669024?fits=Year%3A1984%7CMake%3AHonda&hash=item2ebea040e0:g:DFYAAOSwpzdWqnm5&vxp=mtr

Or this one? http://www.ebay.com/itm/Carburetor-FITS-HONDA-ATC200S-ATC-200-S-1984-1985-1986-3-Wheeler-New-Carb-/280832151154?fits=Year%3A1984%7CMake%3AHonda&hash=item4162e68e72:g:xcIAAOSwVFlT6k9o&vxp=mtr

Either way, if you get a chinese replacement carb, do yourself a big favor and remove the 2 screws that hold the butterfly on, apply some loctite, and reinstall them. They are otherwise almost sure to unthread and end up in your engine. Seen it many times with china carbs.

[Kingcricket]

Probably the 2nd one my gf doesn'the like me spending a lot of my money in parts lol.... after buying like 20 cams and bushings for the old motor which is still sitting in the shed.

Again thank you for all your help when I troubleshoot problems I'm always reading posts in here to get info on my problems, except my cams burning up never really troubleshooter that

Put the carb on runs perfect now, the carb had 94 main and 34 pilot. Now would putting the 98 in and maybe the 35 pilot really give me any noticeable increases.

[DohcBikes]

Put the carb on runs perfect now, the carb had 94 main and 34 pilot.The 200s replacement carb?
Now would putting the 98 in and maybe the 35 pilot really give me any noticeable increases. Did you ever get around to changing the jets, if so what was the outcome?

How's that little engine pulling for ya? Wanna post some pics? As far as I know you and I are the only ones to use the 145 in an ATC. It's a great replacement engine for people that might need something a little less powerful for kids,,, ATC150!!

[Kingcricket]

I haven't gotta around to switching the Jets, i'v been messing with swingarm bolt and adjusters and just rebuilt my shock. It definitely ran great but the spark plug was still really clean, but it keeps on pulling to the right so i've been distracted with that. Now I noticed the front tires is off with the handlebars, but I'll get around to the jets.

And yes that was the replacement 200s carb

[Kingcricket]

http://i1284.photobucket.com/albums/a573/kingcricket/Mobile%20Uploads/1469477605872-172883516_zpsmklvctfo.jpg (http://s1284.photobucket.com/user/kingcricket/media/Mobile%20Uploads/1469477605872-172883516_zpsmklvctfo.jpg.html)

http://i1284.photobucket.com/albums/a573/kingcricket/Mobile%20Uploads/20160710_110636_zpswtfevkx5.jpg (http://s1284.photobucket.com/user/kingcricket/media/Mobile%20Uploads/20160710_110636_zpswtfevkx5.jpg.html)

http://i1284.photobucket.com/albums/a573/kingcricket/Mobile%20Uploads/20160710_110625_zpsebgwyjfw.jpg (http://s1284.photobucket.com/user/kingcricket/media/Mobile%20Uploads/20160710_110625_zpsebgwyjfw.jpg.html)

It's a work in progress looked a lot worse when I bought it

[DohcBikes]

Honda clutch cover bolts right on to that engine and works fine? Or am I missing something? That would be new and important info as far as i'm concerned! The hardest part of a lifan swap is usually the brake pedal mount.

[DohcBikes]

Now I noticed the front tires is off with the handlebars,
Forks are probably bent.

[Kingcricket]

O yeah case bolted right on perfect but splines are different for the kicker converter gear, so still couldn't get that to work.

[DohcBikes]

O yeah case bolted right on perfect but splines are different for the kicker converter gear, so still couldn't get that to work.Fine with me, I never run the kicker on a lifan electric start anyway! As a matter of fact most of the quad sourced engines dont have one. Thats great news, saves a ton of headache on the lifan swaps!!

[Kingcricket]

Well your welcome lol that's the first thing I did when I bought the motor, was check and see about the kicker. Was gonna try taking the motor apart and seeing if I could just swap out the shafts but who wants to rip apart a brand new motor.

[DohcBikes]

Well your welcome lol Nice even trade for the carb info! It rarely works out that way. I expect to see more of these 145cc motors and more lifan swaps popping up so it's great to have tips available. On the quad motors, all you'd have to do is close up the kicker hole on the Honda cover and boom you're done. It also makes it an option for those that might want their lifan engine swap to look and function more like original.

[Kingcricket]

Not quite even my left fork was bent lol. Got it straightened out and had too much air in the left tire, goes a lot straighter now.

[Kingcricket]

Its funny I can't find a single picture of my exact motor, I found some specs and pics on the engine number but it was a different horizontal engine. Just looking on Google of course.

[Kingcricket]

So I put the 98 main in with the 34 pilot, because the 35 I have is a different thread type. It ran rich at full throttle so I took my baffle off so it's loud again but that leaned it out enough. I was trying to find the pilot online but don't see any like that.

http://i1347.photobucket.com/albums/p705/kingcricket89/Mobile%20Uploads/20160731_142329_zpszca0cydj.jpg (http://s1347.photobucket.com/user/kingcricket89/media/Mobile%20Uploads/20160731_142329_zpszca0cydj.jpg.html)

Wonder about just tapping the thread size into the new carb, think it's m4 x 7mm.