PaymentPlan Posted March 22, 2018 Report Posted March 22, 2018 With an online market that's flooded with knockoff copy's of OEM cylinders, and suckers that buy into them, I foresee a possibility that a future purchase of a bike maybe equipped with said junk. What does a visual observation look for when trying to distinguish between the OEM and the knock off junk parts? Is there any indication's or markings on the external surface of both cylinders that would aid in filtering them? I did a search for this topic and it doesn't look like its been covered. Quote
kawa110 Posted March 22, 2018 Report Posted March 22, 2018 I have a eBay top end kit. I’ll take photos of the cylinders and post them later. Quote
PaymentPlan Posted March 22, 2018 Author Report Posted March 22, 2018 2 hours ago, kawa110 said: I have a eBay top end kit. I’ll take photos of the cylinders and post them later. Cool, maybe someone can throw up some of some OEM cylinders as well. I know there is a right side cylinder OEM NOS on ebay right now. It would provide good photos of what the OEM ones look like. Quote
gusto Posted March 22, 2018 Report Posted March 22, 2018 All the Chinese cylinders I seen have had rough castings compared to OEM. Very visible. That being said I have heard if your going to be doing some porting they are not a bad option. Quote
Ayesully810 Posted March 22, 2018 Report Posted March 22, 2018 I have read the exact same thing ^ Just use some good pistons with it as well. ive also read that those namura's aren't that bad either and that its mostly here say id never run them based on the fact that most people here do not run them. Quote
Schweet97Z Posted March 22, 2018 Report Posted March 22, 2018 2GU on the intakesSent from my iPhone using Tapatalk Quote
Canadianshee Posted March 22, 2018 Report Posted March 22, 2018 I pulled this set off my bike a few months after buying it, they are not oem, but ran fine Sent from my LG-H831 using Tapatalk Quote
PaymentPlan Posted March 22, 2018 Author Report Posted March 22, 2018 18 minutes ago, Schweet97Z said: 2GU on the intakes Sent from my iPhone using Tapatalk Good observation, but from the photos Canadianshee posted his has 2GU on them as well. So we need more. Quote
PaymentPlan Posted March 22, 2018 Author Report Posted March 22, 2018 2 hours ago, gusto said: All the Chinese cylinders I seen have had rough castings compared to OEM. Very visible. That being said I have heard if your going to be doing some porting they are not a bad option. You said rough castings. You referring to the inside and out? Quote
Schweet97Z Posted March 22, 2018 Report Posted March 22, 2018 Good observation, but from the photos Canadianshee posted his has 2GU on them as well. So we need more.They must be taking the copies to a whole different level then. I’ve read Niche cylinders are OK with some cleanup work and porting. One of the vendors “OKed” them at one point. Sent from my iPhone using Tapatalk Quote
Canadianshee Posted March 22, 2018 Report Posted March 22, 2018 Not sure if anyone knows what the circular mark is but its not on the oem cylinders as previous posted above Sent from my LG-H831 using Tapatalk Quote
BlackandYellowBanshee Posted March 22, 2018 Report Posted March 22, 2018 I had some knock offs. A lot of casting flaws. They were painted black, assuming to hide flaws. Once sand blasted they looked very porous. Top side of the cylinders (head) even had epoxy to fill a few holes. Never again... needless to say. Quote
Larry's Shee Posted March 22, 2018 Report Posted March 22, 2018 Don't sound any better than the Wang cranks from years ago. When you can get a complete kit for less than two Wiseco pistons, if you have half a brain ........ (Fill in the blank) Quote
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