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General Category >> Rubber Side Down! >> Now what could you do with these for $34 ????
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Message started by Oldfeller on 09/28/12 at 19:43:17

Title: Now what could you do with these for $34 ????
Post by Oldfeller on 09/28/12 at 19:43:17

http://i.ebayimg.com/t/CHINESE-CARBURETOR-INSIDE-39MM-OUTSIDE-42MM-/00/s/MTIwMFgxNjAw/$T2eC16dHJH8E9qSEW9PCBQY0MJMJCQ~~60_12.JPG

They cost $34 each and are listed here .....

http://www.ebay.com/itm/CHINESE-CARBURETOR-INSIDE-39MM-OUTSIDE-42MM-/380477436568?pt=Motorcycles_Parts_Accessories&hash=item589638f298&vxp=mtr

Why? A stinking diaphragm slide cost $140 for our Savage bike and a Lancer carb set cost over $400.

Something's gotta give on these parts costs and China likely holds part of that solution since they are actually building all these high price parts for the Japanese.

Title: Re: Now what could you do with these for $34 ????
Post by Serowbot on 09/28/12 at 21:55:10

Well,.. the price is right... do they take Mikuni jets?...

... or what's the availability?...

Heck,.. I suppose a creative/cheap* type person,.. could drill them out to make it work...
Just glad I don't currently need to... :-?...

... but,.. as with our bike,.. it's like a trip back in time to the 60's...
;)...

PS.. I didn't red highlight that type... has my name become a dirty word?... I wrote "me" and it corrected, and red typed "Serowbot"... if I refer to myself, I'm forced to talk in third person?...
Weird...
Wassup' wit dat?... :-?...
The mind,.. wobbles... :-?...

Title: Re: Now what could you do with these for $34 ????
Post by Cavi Mike on 09/28/12 at 22:16:26

You can get the Mikuni for $100 on eBay, you just don't get all the extra bits that comes with Lancer's kit.
http://www.ebay.com/itm/Mikuni-Geniune-VM-36mm-36-mm-Round-Slide-Carb-Carburetor-VM36-4-/200798030241?pt=Motorcycles_Parts_Accessories&hash=item2ec07ec9a1&vxp=mtr

The main problem I see with the Chinese mamma jamma is the choke. You want an enrichment-valve style choke, not the old-school flap. You can't use the throttle when the choke is closed on a flap style, it will suck major amounts of fuel into the cylinder and bog/stall the engine out. So, if you try to open it back up before the engine is warmed up, it will starve and also bog/stall. Not a situation you want to be in in the middle of traffic.

Title: Re: Now what could you do with these for $34 ????
Post by Oldfeller on 09/29/12 at 00:34:18

Flap chokes work in half open positions and 3/4 open positions with the throttle getting twisted -- all carbs used to be that way. You learn how far to close it to get it going, then you had a more open partial position you dropped down to for the first block or so on cold days. Then you knocked it open all the way. My Hondas all had Keihin carbs on them and they all did OK for me, gang carbs with linked chokes operated by a lever (like this one looks to have).

http://i.ebayimg.com/t/CHINESE-CARBURETOR-INSIDE-39MM-OUTSIDE-42MM-/00/s/MTIwMFgxNjAw/$(KGrHqMOKiME6YN!u4t6BQY0Mm6r2g~~60_57.JPG

Dunno, looks like an accelerator pump there on the side. You can read Keihin on the carb though if you look good at all the pics.

I don't know enough about big Keihin carbs to have all that much of an opinion, but I look at these and think big Hurley jugs as what else is there out there that needs a carb that big? Mebbe a big V-twin Yamaha or Big V-twin something or another?

It is a direct copy of somebody's carb, or they are building them for somebody and simply leaked out a couple of thousand into the wild "accidentally" ..... you know them Chinese will do stuff like that.

====================

Anyway, the idea is to find a Chinese rip off of a 36-38mm VM carb if such is available. Or find out what is available that could be coaxed to work correctly at a low low purchase cost so as to make buying $140 slides and such unnecessary.

====================

Anyhow here is your carb and who is actually making it in China and selling it on Amazon for $48 all day long.

http://super-spare-parts.en.alibaba.com/product/614191687-214116286/JingKe_PZ30_motorcycle_carburetor.html?tracelog=cgsotherproduct1

http://yitonmoto.en.alibaba.com/product/475997476-212685209/Carburetor_PZ30_with_accelerator_pump_Keihin.html

Title: Re: Now what could you do with these for $34 ????
Post by engineer on 09/29/12 at 06:27:38

I have three of them in a box that look just like that but smaller, all collected by a previous owner of a vintage Honda. Since he had three of them I suspect he had some problems. Those Keihin carbs on Ebay are standard replacements people buy for their seventies vintage Japanese bikes and they were original equipment on some of the bikes in the seventies. The current models seem to be made simpler than the originals. I like old style carbs, they remind me of the British Amals of the sixties. The Keihins I have taken apart were made in Japan and seem to be built fairly well but they are simple. The slides have a dark coating on the ones I have and seem less prone to sticking than the slides in the old British Amals. The slide stop for idle control is a little flakey, at least on the small ones. Like someone said the choke can be tricky.

I've been told that when the slides get worn that air can leak around them and destroy their performance and that is why they went to the diaphrams. I don't know if you can buy jets for them or not.

Title: Re: Now what could you do with these for $34 ????
Post by Cavi Mike on 09/29/12 at 06:36:28

There are slides on diaphragm type carbs too, they just not operated directly from the throttle.