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-   -   Is this normal for new OP gears? (https://www.miataturbo.net/engine-performance-56/normal-new-op-gears-106743/)

patsmx5 Apr 22, 2022 11:36 PM

Is this normal for new OP gears?
 
Simple question. Not sure if I'm being overly paranoid. Is this normal/ok for for new billet OP gears?

https://cimg3.ibsrv.net/gimg/www.mia...2a5faf2553.jpg


https://cimg5.ibsrv.net/gimg/www.mia...ab2dcd605d.jpg



https://cimg6.ibsrv.net/gimg/www.mia...91ccd3cb79.jpg


https://cimg9.ibsrv.net/gimg/www.mia...2ebec90962.jpg



https://cimg0.ibsrv.net/gimg/www.mia...23b131c8a8.jpg



18psi Apr 23, 2022 12:49 AM

no

Midtenn Apr 25, 2022 10:33 AM

Did you ask Boundary?

rleete Apr 25, 2022 11:56 AM

Looks like previously installed.

TowerCrisis Apr 26, 2022 04:27 PM

I'm going to go against the grain here. My brand new Boundary OP came looking similar, but not as bad, as this. I asked FM if this was normal. They asked BE. BE claims it's part of the jigging process from machining the gears and is unimportant. I would be inclined to agree as this is the inner face that's on the crank. If it installs fine and slides on the crank easy, I would run it.

Contact BE if you are uncertain. Additionally, look through the oil feed hole at the gears and spin it to inspect internally. I opted to not disassemble the unit as this voids BE's warranty.

patsmx5 Apr 26, 2022 10:20 PM

Boundary says this is normal. I think it's crap that defects like this are normal for them. The vendor I bought them from opened up two other sets of gears they had in stock and said both sets looked just like mine. The gears in the pictures online don't show these normal marks, I think they should use my pics in their marketing pictures as the pics on their website the gears don't feature these normal defects.

They claim these are from tooling to hold them, but they also claim they are made from strong tough material. I guess it's not as tough as whatever material holds these during the machining process.

But they said it's no problem so going to run them, just feel mislead from the pics online vs what actually is delivered.

TowerCrisis Apr 27, 2022 02:16 AM

Yep, I agree that it's kind of shitty. However, the only critical surfaces are within the gears themselves and the side faces for proper sealing. The crank couldn't care less about how rough the surface it's driving is.

There could be an argument about deep scratches like this causing stress concentrations, but I haven't heard of a single case of someone blowing up BE billet gears.


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