84 200x with 200 Livan ohc running lean

[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 carb

Not 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

[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 carb

You 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...onda+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/1984-1985-19...dWqnm5&vxp=mtr

Or this one? http://www.ebay.com/itm/Carburetor-F...lT6k9o&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]

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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.