General vehicle thread

[Irving]

The casting on this flywheel looks pretty bad. It's for sure not centered. Does this matter? It seems like it should matter for a spinning part, but I just don't know.

Look where I'm pointing on the right. The grooves are hardly even there.


This center ring is not concentric at all. Way more space on the right side than the left.



Are these acceptable tolerances? This is a LUK flywheel off Amazon. I was going to install the clutch until I can get back to doing the low gears in the T-case, but this has me questioning if I should even install this or not.

I wish we had an experience mechanic around here to answer questions like this.

[Erni]

That looks way off. Technically as long as it balances Sb ok. But it looks like they machined it way off. It might not be a real LUK, but a reject from LUK

[Fentonite]

LUK has a webpage where you check authenticity:
https://www.luk-us.com/content.schae...heck/index.jsp

[Irving]

Thanks, there is a scanner code thing on the box that takes me to that website, but otherwise there is nothing on the box or flywheel that has a code in that style. Concerning.

[Fentonite]

Sounds like a fake, since the website says the flywheel should have those identifying features. Since it’s from Amazon, I’d just return it and get one from a different vendor. Not worth the risk of using it, IMO.

[Irving]

I think I'm about there as well. I sent the pictures to my mechanic buddy and he said that level of quality is about the norm and it should be balanced after casting so it shouldn't matter. That doesn't change the fact that the Amazon vendor shouldn't be selling fakes though.

[Erni]

Based on a few forum discussions there are a lot of fakes on Amazon now. Most will come in genuine looking boxes.

[Irving]

Got transfer case? Ugh.

[HunterCO]

The first step is to understand what a casting is and how they are machined.

[Irving]

Very helpful, did you forget a link?