Rx7_Nut13B

iTrader: (1)

I am going to make this a quick one, I bought a 50mm super cheap wastegate about 4 or 5 years ago. I ran it for almost 2 years without a issue (17psi on the spring)

I wanted to change to another turbo setup with variable vane tech, like a Garrett GT4082

Well I sold my entire turbo setup with that reliable cheap wastegate to a good friend, well I thought about buying a name brand wastegate but then I thought about old faithful and decided to buy 2 more. I did a best offer and bought 2 for 78 bucks each (50mm v-band flanges)

Well I wanted to get the construction properties of the metal, and I happen to have access to people that test metal to tell you what it's made out of and if there is a flaw in the welds/casting ect. Well I tell you what I was sup-prized here is the metal construction.



He didn't find any cracks or anything in the casting wrong, dye checked and x-ray.

Here is what the wastegate looks like.



Now I'm not saying go out and buy this at all, I'm just saying by the tests there isn't anything wrong with the china made dirt cheap parts.

Just wanted to chunk this out there.

7dust

iTrader: (14)

This is gonna be good!

DDagman

iTrader: (3)

Interesting fine. It would be cool do the same test with the Ebay intercoolers and radiators.

Maximum

iTrader: (5)

That's cool that you thought of testing that. Some of these parts are probably fine. I think that the issue a lot of people have with Chinese parts is not that they are inherently flawed or that every single one of them is a piece of junk, but that the QA is seriously lacking and the incidence of junk parts is unacceptably high. And on some critical parts of your engine, a quality part with a name brand behind it is a cheap insurance policy.

Also, it's not great to buy these cheap knockoffs because that only encourages the Chinese companies to keep ripping them off and discourages the real manufacturers from investing in the R&D behind new products only to have their work stolen.

theorie

iTrader: (31)

Rx7_Nut13B

iTrader: (1)

I like that video but would like to see the real tial in that same test.

That was ALOT of abuse, I have see a few rotarys get that how but not constantly.

crzyone

iTrader: (3)

The only Chinese parts I've heard of multiple failures are usually the cheap turbos or exhaust manifolds. They tend to crack more often than brand name parts.

86v8rx7

iTrader: (12)

The problem isn't the body its the piston and the diaphragm.

0110-M-P

iTrader: (10)

My problem isn't generally with quality, because anyone can make a quality part if they try (though knock off turbos, wheels, and many other parts have been proven inferior). It's the theft of the R&D that bothers me.

ZE Power MX6

iTrader: (157)

If you are looking for cracks in a casted WG body then you are doing the wrong test, casting is like cookie cutter, just pour metal into a mold. Diaphragm is where these WG and BOV fail, now take a header or turbo manifold and do the same test, test the fitment too while you are at it.

There's a video of them testing a Tial too.

RotaryEvolution

iTrader: (30)

popcorn


truth is most of the knockoffs do the job nearly as well after the failures have been addressed. no company is ever in business for long if they keep producing crap, even the chinese.

i've even seen cheap chinese turbos makes in excess of 400whp for numerous years without failing.

i've also used the $75 50mm wastegates and not had any issues with them. one wound up getting destroyed after being replaced by a tial and going onto a different vehicle after a tow hook was accidentally attached to it while towing the car on a flatbed(don't ask me what he was thinking..), but it worked fine on a 450whp FC for years. not like your average wastegate is going to be subjected to that much heat for an hour straight... not a good example scenario.

who can forget the glued together turbos that came out 6 or 7 years ago, but since then have you heard of it? yes the balancing isn't perfect but the parts have obviously gotten better. if all these parts are crap how do these speed shops actually survive by selling these parts in droves? i picked up a cheap chinese Godspeed radiator only a few weeks ago, first time i laid hands on one, and it was actually a rather decently constructed part(the brackets fit right and it went right in).

think your FD is going to do a high speed run across the desert at 180mph for an hour straight and not cook the motor first? yeah. keep thinking that.

not everyone has $400 to throw at a simple valve and body mechanism.

i of course understand Tial in wanting to represent their products and not want to lose too much to the influx of 5 cent per hour labor from overseas, but those who want name brand will buy name brand and always will. Tial may lose some business but they certainly won't go out of business over this. those who buy cheap parts know the gamble and risk involved.


but the FD crowd is a picky one, putting this here you will get a bit of criticism. (i will as well, partly why i don't come to the 3rd gen section all that often)

who knows, maybe the chinese can cast 20B parts. i doubt you will hear much complaining then. (casting iron is not a complex process, nor is machining it but it does require heavy and expensive equipment to do, even if we had to cut and nitrite the parts ourselves.) if i had a spare junk thick iron i certainly would look into it(the hardest part to find and also the first to be worn out or how about REW irons, which also won't be around forever. think mazda will fire up the mills just because we ask nicely? nope.

Montego

iTrader: (1)

Well that's it, your one part test has totally changed my mind about chinese quality.





On a serious note:
I only trust chinese products that see limited heat and are static by nature.

Montego

iTrader: (1)

I completely agree with your statement.

bajaman

Not everything made in China is crap, no. But as others have pointed out, the problem is...China consistently steals others companies' designs, along with all the engineering that went into them, and then makes these cheap knock-offs. They are cheap because the Chinese workers get paid next to nothing. They are cheap because the Chinese factories don't conform to any modern environmental standards and simply poison the Earth without a second thought. The product itself is fine because it was ENGINEERED that way, by others.
Personally, I avoid products like this like the plague. But Rotary Revolution makes a good point: If a Chinese manufacturer makes available a part or assembly that is either no longer available here or is like 1/10th the price...a LOT of people suddenly go, "Well yeah, I mean...you know...it IS made in China but DAMN! A 750 hp 4-rotor for $1200? You can't go wrong, you know...?"

GoodfellaFD3S

iTrader: (213)

Exactly. In the medical world, this is called a 'Case Study.'

Try convincing a physician to change their prescribing habits for their entire patient population on the results of a one-patient test

Thanks for posting this though

nycgps

iTrader: (4)

i guess most folks already forgot that Japan used to sell crap couple decades ago.

just wanna point that everyone gotta start somewhere ---- and u guys thought we used to make quality goods ?

process is improving, sure china stole lots of stuff, but so did the rest of the world. history repeats itself over and over. no need to point fingers. and as far as I remember, Last year's China has filed more patents than US.

purerx7

iTrader: (61)

This +100. Someone who buys a Chinese part will very rarely ever buy authentic products from Japan. Unless of course they are forced to buy authentic due to no alternative. I can't tell you how many PMs I have received from people looking for replica parts or want a $300 titanium exhaust (we don't sell replica parts). Anyways, those buyers buying Chinese parts would never be a customer of the genuine manufacturer , thus I see no overlap.

CarbonRXX

iTrader: (7)

That's 100% accurate.

Working and living in China for 9 years now, I am starting to understand the composites market pretty well (I do fiberglass/carbon fiber cars and motorbikes parts mainly). I can tell you that a lot of brands that claim to be Japanese actually have their productions in chinese factories. The only difference is that people feel more confident to buy "Made in Japan" products.

flaco

iTrader: (7)

yep. same as some "american parts "

ZE Power MX6

iTrader: (157)

Well, manufactured in China and bootleg by China is 2 different thing...

Rx7_Nut13B

iTrader: (1)

I like the back and forth comments, this is turning out to be a decent discussion.

I will get back with my guy on Monday to get what type of metal the valve and shaft is made of, as well as the valve seat.

The diaphragm inside these two are the exact same style and material as the control valves at work that are exposed to 1000F turbine external (exhaust and high pressure steam) heat. But looks don't mean everything.

bufferovrflo

iTrader: (7)

It's always I heard from a guy, that knew a guy, that told that guy about his "bad" experience with X product which could be blown out of proportion to begin with. Honestly everyone is being a little too harsh and focusing on where the parts came from rather testing results and experiences.

FWIW, I worked for COBB Tuning for a few years and I would bet most of you trust their products right? Well hate to burst your bubble but I found out that they and almost every company they work with also have most their products manufactured in China. Reason which I'm sure you already know but outsourcing is far more superior than buying the tooling and materials in house. Naturally once X products arrived, QA had to be done (but it was all visual fyi). I would love to go on about how many parts from COBB's website are outsourced and how much cheaper it is but I did however sign the "trade secret agreement" before departing with them... I'll just say that it's a SMALL fraction of the cost. The environment suffering, cheap wages and knocking off the accomplished R&D is a major downside to all of this but everyone is in it for the money and that's not changing anytime soon.

At the end of the day, it's your car, your money; so you if you don't like it then don't buy it! How about lets make this thread useful, based on actual experience with X products and testing results to aid everyone on purchasing decisions.

My 2 cents: In all of my years in the tuning world the only parts I stand by from ebay and had zero issues thus far have been intercoolers, radiators, depo lights, IC piping, strut bars, and catch cans. I haven't ventured into the turbos or internal components.

RENESISFD

iTrader: (13)

I personally do not have a "problem" with parts made in China. The problem with these parts is that they are copying a product and stealing business from the companies who worked to gain market share and performed the R&D to make the product. If they worked and designed their own products under their own business name and spend the money to advertise, sponsor and positively contribute to the industry then they would deserve the profits they may make.


Having said this.... I have shine auto parts on my car

cewrx7r1

iTrader: (2)

I agree. That is almost 6 minutes of constant testing that does not match re-world use. The temp gage probe display was not shown after the test system was stabilized and working. Useless test by itself.

Rx7_Nut13B

iTrader: (1)

Update.....

My friend was at work today after all, so we checked out the valve and valve seat. I have the screen shots for all the metallurgical data.

Valve body


Valve itself ( it's basically steel) melting point around 2500F ( please correct me if I'm wrong on this, I'm not 100% sure )


Valve seat