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Post by 4l04ever on Dec 28, 2018 20:45:33 GMT 1
Anyone tried any and got them to work? Can be purchased for £30 delivered...…
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Post by Tobyjugs on Dec 28, 2018 22:35:35 GMT 1
30 quid wasted
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Post by petenofear on Dec 28, 2018 23:07:00 GMT 1
Have you tried them then ?? |
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Post by JonW on Dec 28, 2018 23:08:36 GMT 1
I thought the conventional wisdom with these was that the bodies are ok but the jets and needles are junk and should be replaced with OEM Kehin etc.
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Post by petenofear on Dec 28, 2018 23:14:30 GMT 1
I thought the conventional wisdom with these was that the bodies are ok but the jets and needles are junk and should be replaced with OEM Kehin etc. This was my thoughts may be jets not the best but can’t knock it if not tried |
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Post by peter007 on Dec 28, 2018 23:17:13 GMT 1
Has anyone got a link to them ?
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Post by donkeychomp on Dec 28, 2018 23:35:05 GMT 1
Surely jets are pretty cheap. I'm kinda interested now!
Alex
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Post by Tobyjugs on Dec 28, 2018 23:41:02 GMT 1
Have you tried them then ?? No but I have seen how long it takes to set them up and then they have to fit original parts into the carbs and they are still not so responsive. |
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Post by reedpete on Dec 28, 2018 23:53:32 GMT 1
Surely jets are pretty cheap. I'm kinda interested now! Alex Suggest you don’t get too excited....they are what they are. |
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Post by reedpete on Dec 28, 2018 23:57:47 GMT 1
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Post by bare on Dec 31, 2018 2:16:24 GMT 1
I thought the conventional wisdom with these was that the bodies are ok but the jets and needles are junk and should be replaced with OEM Kehin etc. In theory :-) A now gone inmate here did just that. Then effed about with them .. for months. Sequentially replacing crap parts in the things with Genuine Keihin ones. And Keihins bought as parts Ain't Cheap By the time he got them working decently He claimed he had spent Far more $$ than a purchase of Genuine Keihins. Plus he wouldn't of wasted Weeks of work frustration. Just to add insult to injury. Buy cheap = Buy twice. Or if dim? Repeatedly. |
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horace
Thrash Merchant
Posts: 456
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Post by horace on Dec 31, 2018 10:00:10 GMT 1
Ask Muttsnutts he won’t dyno a bike with Chinese carbs on whatever jets it’s got , fake goods are what they are
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Post by Tobyjugs on Dec 31, 2018 11:30:42 GMT 1
I do feel sorry for people who don't know what they are buying. There are some really good fakes out there. I was a bit dubious about a pair of 35 mm PWK's i bought.
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Post by rigga on Dec 31, 2018 16:00:36 GMT 1
Taiwanese oko 28pwk copies work well with internals changed, even think mutts has had some through his hands on a dyno and said much the same, hit and miss generally though, so genuine would be best (if you could get them for the price Bare can)
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Post by loudpipes on Dec 31, 2018 16:15:14 GMT 1
Fake or not what you planing on fitting 38's to ?
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Post by 4l04ever on Dec 31, 2018 17:46:40 GMT 1
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bngt
Drag-strip hero
Posts: 202 
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Post by bngt on Dec 31, 2018 17:53:36 GMT 1
I got chinese copies with my 472 kit. I plan to try with exchanged internals. How much could the body differ? The castings look ok and the only visual difference is that they lack serial number. I wasn't expecting real Keihins anyway but they came in Sudco boxes!
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Post by muttsnuts on Jan 2, 2019 21:55:15 GMT 1
right, glad you've brought this up Rob
A few years back I did indeed test and successfully get working a few different sets of PWK copies made in Tiawan, now I stress Tiawan because they did a good job of copying the carbs, I switched all of the internals and got very comparable results to original PWK's on the same bike/engine etc
Now, since then I've had approx a dozen or so jobs that have had Chinese copy carbs on, PWK's 28, 30, 35's and 38's also some Mikuni VM 28's, 32's and 34's, all (ALL of them have turned out to be rubbish and I've not successfully managed to fuel one single bike correctly with the copies, I've subsequently fitted genuine new carbs from stock and within an hour got the bike fuelling and running correctly.
So as Horace (Chris) has stated, I will no longer dyno/set a bike with up Chinese copy carbs on, or if I do, I tell the customer up front that they will be invoiced for every hour I try and get them working and generally after 4+hrs I give up and get some genuine carbs to prove my point, oddly enough I now have a box full of sh*te carbs made in China.
Personally, I'd steer clear, a carb is a very accurate instrument and if you really think one costing £30 is going to work as well as a genuine one which is approx £160 to £180, then you will spend alot of time and grief trying to get the bike to run well.
I only stock genuine carbs now and I've not seen any that have been made in Tiawan for a few years now
Also, unless you are going seriously large CC then 38's are going to be way too big, there are a good few guys on here who went that route only for me to recommend smaller carbs, which they subsequently did and ended up with a smoother better running bike making more BHP
As an example my 443cc only runs 35's and the race 472cc I did last year only runs 35's
HTH
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