I included a pic of the valve supplier (Trick Titanium). They dont usually use that supplier, but they gad a sourcing issue with the normal 1 & 2 suppliers and since my heads were part of a “mis-cast” set, they likely went with what they could sourre. Re: your statrments. U have ignored the details presented and do what all the excuse makers do, point the finger. Feels good for the moment, but not a good long term business strategy. Future customers will secide if this incident/ data point matters.
Re: fault...here are the facts:
1.) The heads were purchased assembled. I and Mast confirmed the source of the valves ....hell we even talked about it. They commented that they wouldnt use them anymore because of the issue and their lack of response. Furthermore, i have communicated with MAST employees other than Chris and this isnt isolated. Ive recd communications with at least three other customers with similar issues. They just ate it and moved along.
2.). The car was on a Pat G BREAK-In tune. Valves dropped right b4 we were headed to track to track tune. Pat is one of the best and recognized tuner working today...try again!

3) MAST strung me along for 6 mos...said that they at least replace their faulty crap. Didnt happen. They even avoided my builder at PRI that year. Took repeated calls to even get sone response.

4). LASTLY, They never asked for the parts to inspect to see where the issue was..this showw me that either they had no interest in finding out if there was an issue or they knew and felt like if they stalled enough, Id go away and bo one would be the wiser. ....yeah, quality organization...lol! Ive worked for 3 OEM automakers...When there is a quality issue, each of them obtained parts to root-cause if they were serious about resolving the problem and preventing future occurrences. When they didnt, they werent.

Oh, BTW...Re: experts....well lets just say I have access to some of the best OEM engine and head designers/engineers in the business that saw what broke and where.

As Chris and I finished our conversation, I even offerred to split the bill, with all we had discussed...he complained that MAST was a mom and pop small shop....more and more bullshit.

In the end, i still have all the broken parts and a list of employees that can be hauled into court. Most of me wants to just move on, but its post like the one above that **** me off enuf to want to fight on. Nothing like paying $5K and being bent over and the offending party telling u its your fault without even looking at the details.

been going on spinning my mast heads 8000 rpm for quite a while. Good times guitar

Yes...this is confusing. You said in post 1 that the valves are Trick Flow. So you are now saying that the valves are Trick Titanium? I asked in this thread back in Feb for clarity on this, by asking you for a part number on the valves.
So exactly what valves were in the engine, at the time it came apart? It would be wise of you, in my opinion, to clarify the information posted.

Agreed and corrected. It was an oversight on my part for not going back and correcting the original post after later discussing the valve supplier with Chris (Mast) and after subsequently receiving the original retail/wholesaler invoice. My apologies to Trick Flow for confusing them with Trick (Titanium).
Ironically, I dont hold anything against the valve maker. They make what they make. Its up to the actual part mfr to make sure the components meet the specs of what the product is intended for. When you take your car in for warranty, you don’t hit up the tier 2 supplier.

I want to provide an example of a premium part maker that goes above and beyond. I know that Precision sometimes gets a lot of flack, but I have purchased 4 turbos and 4 wastegates from them thru retail channels. On two seperate occasions/builds, I sent parts in that weren’t operating correctly. On each of those occasions, they didn’t say, “your fault”, not my problem. They instructed me to send the parts in for inspection/repair. I spoke with their techs to root cause the issues. In both those cases, repairs were made and feedback given. One of those cases was damage caused by this issue, which wasn’t their fault. Precision didnt charge me a dime either time and their turnaround was excellent. Needless to say, I will always look to them 1st for my turbo needs.

I want to again acknowledge my error. It was discovered after a lot of back and forth and I should have corrected things as soon as I found out.
I want to make one thing clear...My “issue” was never with the valve mfr...it was always with Mast and how they handled the situation. If they had done any of the due dilligence that is normally done when a potential quality spill is discovered, I would have respected their position more. It would would have provided some evidence that they wanted to get to see if there was a problem on their part.
TrickflowTEch’s post, aside from pointing out my error, further illustrates how some of these companies handle issues, again...before even asking for the parts to do a proper inspection or root cause (actions that demonstrate intent)...1.) Statement claiming that they understand/or that they are good guys 2.) Blame the Customer 3.) Blame the builder and 4.) Blame the tune..... what happens when there truly is an issue that is the fault of the mfr? This thinking, this mentality eventually catches up with all businesses at some point...If you want to sell premium products, step up and provide premium service to ALL customers.

I was able to afford the rebuild. It was a time and $$ nuisance, albeit. I take exception, cause I work hard for my money. However, what happens to the guy who has saved for years for a dream build?...

I have no skin in this game at all. The way I read TrickFlow’s post was that they knew that Mast did not use their valves, so there was no sense in asking you for anything. He simply showed up to a thread where you had falsely accused them for months of something that, again, he was aware that he wasn’t guilty of. If Mast was using their equipment, there would be a relationship there, and clearly he knew that it didn’t exist. I had doubts myself of Mast using TrickFlow valves, and that’s why several months back I asked you for part numbers on those valves. Perhaps confusion could have been avoided long ago, by someone doing an internet search, and coming across info that’s false. It happens all the time on the net.
Not sure if you guys spoke privately, but I feel that TrickFlow handled that WAY better than I would have as a business owner myself.
Glad to hear your build got straightened out, and I sincerely hope that Mast steps up and helps you some way in this mess.

I don’t blame you for being upset over this experience, but to say something like this after falsely naming Trick Flow in all of this is pretty distasteful. You were wrong and they called you on it. They didn’t have ther facts mixed up, you did.

I placed an online order for Trickflow porters castings from summit a couple years ago because I wanted to have my own valves and CNC work done on them. THEY CALLED ME to make sure I knew what I was getting so that I wouldn’t be surprised to get a head without a valve job and finished chambers. Where customer service for other companies is usually reactive, Trickflow was proactive. They were not guilty of supplying the valves in your old heads and they are not guilty of your criticism either.