https://www.miataturbo.net/build-thr...y-build-94063/

post 49

Considering no one has produced an example of a correctly machined pulley my money is betting ATI has a problem with every damper they produced to date.

Thanks. Looks like it's multiple different serious QC issues then, nothing minor.

So despite how the ati dampers are all wrong. Haven't they proven to be a good quality product on a ton of miata engines?

This is a question not a statement. I have never owned on and am in the market for a damper. It just seems a lot of guys are running them without issues.

The pulley in post #8 looks correct. The ones in #10 & #32 appear close, within a degree or 2. I'm guessing they either have a fixturing problem, processing problem or both.

.

https://www.miataturbo.net/attachmen...-10-5aafd1.jpg


Mine is brand new still in the box.

https://www.miataturbo.net/attachmen...319_102650.jpg

I believe the motor shown here is the motor being built for me by Andrew. I contacted Fab9 since I bought my crank pulley from them. Brian from Fab9 put a call in to ATI and we're waiting to hear back from an engineer at ATI regarding the issue. I should hear back today and will update when I have more news.

Big credit to Andrew for finding the issue and bringing it to everyones attention.

Amazing attention to detail to even discover this issue. Props!

Quoted for the truth -

BTW: Just for some time reference, my ATI (post #40)was purchased last month from FAB9.

Makes me really glad I went with the SuperMiata damper instead of the ATI. So with two adjustable gears one would be able to adjust their cam timing in theory to correct this. There should really be a bulletin posted up by ATI and their vendors for existing owners for a workaround once they confirm the issue on their end unless they plan to do a recall..

If this was unintentional, I have a feeling they are going to try to slip this under the radar as much as possible. -- Hope I'm wrong.

+1 for Andrew/Trackspeed for catching this.

Hopefully the pulley itself can be removed from the damper assembly without destroying the damper. ASSuming it can, because why wouldn't it be. Rehobbing the keyway is a good fix for the crafty enginebuilder but why bother. High chance ATI will make another run of pulleys with the teeth oriented to the keyway properly and offer a free exchange. AFAIK they make the pulleys in house using the same equipment we use to make ours, so turnaround should be pretty quick. Teeth are added after the part comes off the lathe, so it's up to the operator to orient the key correctly. It's a manual trim that takes skill and is easy to fuck up.

LOL @ QC in aftermarket performance companies. First article what???

Seriously? Sheesh, a simple go/no-go fixture is all it would take to catch something like this.

Yeah but Ray retired, so now who's going to make the go/no fixture?

I am sure that there are several ways to skin this cat. My point is that I am dissapointed that these simple activities aren't incorporated into the process. Both as a consumer and as a producer. One event like this has the power to crush a business. Something like this in my field could shudder a multi-billion dollar corporation.

Hey lads,

Before we get to business, I'd first like to give a big kudos to Andrew as I know other engine builders by name who have installed these without notice.

After becoming aware of this scenario I quickly reached out to the engineer at ATi that we've dealt with over the years. He recognized that the production is indeed flawed and effects orders of ours as of the 12/2017. As ATi's largest re-seller of Miata dampers, we've since gone through over 150 units!

What's next?
I'll help in facilitating the exchange for these dampers even if that means it's on my dime to eat the shipping costs, although I'm hoping ATi is going to put on their big boy pants and support us in this area. This is a tremendous loss for us but solving this problem quickly is priority number one. Shortly I'll send a communication with the next steps, if you can confirm your purchase date with us falls within, please help by being proactive and send an email with your order number to the mailbox we created this morning to help clarify the process: EXCHANGEATI@GMAIL.COM

Email should follow a format like this:

Subject:
(Order number in subject line)

Body:
Order Number:
Name:
Address:
Phone Number:

They will replace all of the dampers that carry this flaw. They are immediately producing corrected dampers and my goal is to provide a solution with very minimal down time.

Didn't buy from us?
As we're streamlining the process I'm happy to help anyone who has purchased their ATi damper elsewhere. Please follow the same instructions above, just include the name of the company you purchased from.

As this will already be hectic to manage in what's already our busiest time of year, please keep communication to that email address. I'll keep an eye on it closely.

Cheers guys,
Bryan

So anything before 12/2017 is wrong? I got mine from their ebay store (as a fully functional blemish) 9/2017. Just installed it a couple weeks ago. No pictures of it, sadly. And with the bottom timing cover on, no way to get a picture.

*After.

Thanks Bryan you can ignore my voicemail. I went ahead and sent the email in. My order was originally placed on 12/12/17.