|
Post by humanshield on Mar 23, 2015 7:52:24 GMT -5
I touched on this once before in another thread but due to a very large number of people buying fake 20mm carburetors, I wanted to make a thread dedicated to this. I got burned myself and this might save others from getting duped. There are a LOT of vendors selling 18mm carburetors as "20mm" carburetors. Especially on ebay. What they are doing it taking an 18mm carburetor (dirt cheap from china in bulk), and machining a very small portion of the outlet flange on the intake manifold side so that the last 1/2 inch or so is 20mm, but NOT the entire venturi going through the carburetor and the BUTTERFLY size is still 18mm. Doing this does NOT increase the performance of the carburetor and does not increase the volume of air that can pass through the carburetor. You will still have an 18mm carburetor. Imo, it's downright false advertising. Here are some photos to help identify fake 20mm carburetors.... In this first photo you can see the ridge left from the machining where it stops. As you can see, after the machining, the bore size is larger ONLY up to the machining ridge. All they did is bore a hole into the barrel that is 2mm larger than the original 18mm. But because the machining stops before the butterfly valve and because the rest of the venturi is still 18mm, there is no performance gain. You still have an 18mm carburetor.  Here is an angular view of another fake 20mm carburetor. Again you can see where the machining stops. To try and conceal the machining, some carbs are machined all the way right up to the butterfly valve making it a bit harder to tell it was simply machined. You need to verify that the carb in fact has a 20mm butterfly before purchase.  Finally, here is a photo of a TRUE 20mm carburetor.... There is no machining and the seller will verify that the butterfly valve is in fact 20mm. (The butterfly valve is the brass plate with two screws) This carburetor can provide improved air flow volume for Big Bore Kit motors. 
|
|
|
Post by Grom Reaper on Mar 26, 2015 14:05:55 GMT -5
Where do we find these true 20 carbs?
|
|
|
Post by birdman on Mar 26, 2015 14:18:10 GMT -5
Excellent post. This should be stickied. So people who do get burned can submit this to ebay to help get a refund back for people selling fakes.
|
|
|
Post by humanshield on Mar 26, 2015 14:44:01 GMT -5
Where do we find these true 20 carbs? Please note most sellers also sell 18mm carb so before pulling the purchase trigger make sure you have selected their 20mm carb. If you get a fake (or real) 20mm carb from an ebay seller please PM me so I can add them to this list or change their category.
I have personally communicated with the following vendors (or another member has verified) who have assured me their 20mm carburetors have 20mm butterfly valves (which the fakes do not)Scooters To GO (forum member verified)
The following ebay sellers have sold me fake 20mm carbs OR...the ebay photo appears to show a fake.....or...another member has reported they got a fake 20mm carb from these sellers everestparts248 m.j.zee partsangel vostore 02Starrider
The following ebay sellers would not respond to me when I asked if their 20mm carb had a 20mm butterfly valve glen-parts
|
|
|
Post by humanshield on Mar 26, 2015 14:46:20 GMT -5
Excellent post. This should be stickied. So people who do get burned can submit this to ebay to help get a refund back for people selling fakes. I did. And ebay refunded my entire purchase amount plus shipping without requiring me to send the fake carb back. YMMV
|
|
|
Post by niz76 on Mar 26, 2015 14:51:31 GMT -5
|
|
|
Post by Grom Reaper on Mar 26, 2015 18:40:45 GMT -5
Props! This will save a lot of people a lot of headache and time!!!! Thanks!
|
|
|
Post by 90GTVert on Mar 26, 2015 21:19:08 GMT -5
I stickied this rather than putting it in the tech area. This way the thread can remain open so perhaps if we get real or underbore 20mm carbs we can share where from.
|
|
|
Post by humanshield on Mar 29, 2015 7:42:12 GMT -5
I continue to get 18mm carburetors that sellers claim to be 20mm carbs.
So far I have not been able to purchase a true 20mm carburetor that has a 20mm butterfly valve
Even after communicating with sellers and asking that they verify the carbs does have a 20mm butterfly before purchase.
|
|
|
Post by Scooters To Go on Mar 30, 2015 10:48:06 GMT -5
Where do we find these true 20 carbs? I have personally communicated with the following vendors who have assured me their 20mm carburetors have 20mm butterfly valves (which the fakes do not) 02Starrider
Please note they also sell 18mm carb so before pulling the purchase trigger make sure you have selected their 20mm carb.
The following sellers have sold me fake 20mm carbs.....
everestparts248
m.j.zee
We have had the same issue trying to find a quality vendor for 20mm carburetors. There are a lot of suppliers that will claim 20mm carbs, then you receive it and take measurements only to find that you actually got an 18mm or 19mm. If you'd like to add us to your list of verified 20mm butterfly valves, here's an image to verify. This is from our 20mm Keihin replica carb. 
|
|
jc33777
Scoot Enthusiast
 
Posts: 119
|
Post by jc33777 on Mar 30, 2015 11:25:25 GMT -5
I have personally communicated with the following vendors who have assured me their 20mm carburetors have 20mm butterfly valves (which the fakes do not) 02Starrider
Please note they also sell 18mm carb so before pulling the purchase trigger make sure you have selected their 20mm carb.
The following sellers have sold me fake 20mm carbs.....
everestparts248
m.j.zee
We have had the same issue trying to find a quality vendor for 20mm carburetors. There are a lot of suppliers that will claim 20mm carbs, then you receive it and take measurements only to find that you actually got an 18mm or 19mm. If you'd like to add us to your list of verified 20mm butterfly valves, here's an image to verify. This is from our 20mm Keihin replica carb.  I bought mine from them like 2 weeks ago and it does have a 20mm valve I can put up a picture if you guys want
|
|
|
Post by humanshield on Apr 3, 2015 22:33:44 GMT -5
We have had the same issue trying to find a quality vendor for 20mm carburetors. There are a lot of suppliers that will claim 20mm carbs, then you receive it and take measurements only to find that you actually got an 18mm or 19mm. If you'd like to add us to your list of verified 20mm butterfly valves, here's an image to verify. This is from our 20mm Keihin replica carb.  I bought mine from them like 2 weeks ago and it does have a 20mm valve I can put up a picture if you guys want Good to hear. I guess I'll go ahead and order from them. I STILL don't have a real 20mm carb!  Ebay has saved my butt on these things. Both sellers I bought from turned out to be no good even though they talked a good game before purchase. Both then tried to screw me after the sale and ignore my requests for return. I trust 02starrider. Should have ordered it from them to begin with.
|
|
jc33777
Scoot Enthusiast
 
Posts: 119
|
Post by jc33777 on Apr 4, 2015 10:05:01 GMT -5
Man that blows thank God for eBay helping you out STG has done me real solid on all my orders I've spent around 800 bucks with them in the last month and am happy with everything I've gotten and their customer support is top notch
|
|
|
Post by humanshield on Apr 4, 2015 11:08:39 GMT -5
I have to give ebay credit. So far they've had my back when a seller tried to cheat me. No doubt if I had bought it from the sellers website Ida been SOL.
|
|
|
Post by walleye1963 on Apr 4, 2015 13:45:12 GMT -5
Hi guys thought I'd let youno I sent for a 20mm carb from 02starrider on eBay it look 3 days to get it.used my new Digital caliper to measure it and it read 20mm.I've got stuff from him before and will again.
|
|