Im now alot more interested in these turbos/kits.
there will be manufacturing/assembly/machining/quality control or flaws with any production components.
A poor quality control,machining issue cost us a motor at work. From a turbo from the oem supplier. And these were oe replacement brand new unit. I work in the industrial/commercial diesel repair and maintenace. And every single day I see these issues.and diagnose and repair. So I understand not every single part will be correct regardless of manufactuting or country of origin.
Nothing new to me

 

I am more interested in these as well,but my understanding is the turbines are what come apart do to poor casting methods. But idk its all here say. As far as ebay wastegates my friend is still using the same 50mm he bought off ebay 5years ago for $50 and it still controls boost great.

 

Looks like its worth a shot.....I may even bit the bullet

 

welp, just bit the bullet on on the 76mm with a 1.0 a/r housing from these guys.

 

You buy a journal or ball bearing? Im looking into buying a journal bearing one and if I can get the 1.0 ar that be awsome

 

I DESTROYED my stock LS1 with a chinese wastegate. it stuck shut and boosted to over 20psi. it broke 4 pistons, bent 3 rods, and cracked the block in multiple locations. the entire block was trash.

yes they all use the same concept, but they use VERY different materials. buy a nice wastegate and save your engine.

now as far as chinese turbos, yes they work. they work fairly well actually. I made 505rwhp on a 76mm chinese turbo. it spooled quickly and made great power. but then I put a turbonetics T78 on it and made 612rwhp.

so yes, while the On3 turbo will work well, a good name brand will work better, its just really up to you. then you have the whole warranty issue. there really is no warranty on chinese stuff. The company wouldnt even warranty a $55 wastegate that cost me thousands of dollars. Oh well, that was the last time Ill use chinese parts on my car.

 

I checked the turbine over pretty well, it doesn't have any cracks or casting flash and the wheel/shaft look to be high quality steel. I didn't note any imperfections, but I didn't magnaflux it either.

 

journal

 

where are you seeing these turbos for 350, I see them on ebay for 689

 

If its the diaphram you're worried about, when you buy a cheap WG, just pull it apart and upgrade. I read something on the supra forums along the lines of this but with FPR's, Aeromotives was the cheapest made, with stamped pieces and the lesser costing ones had nice machined pieces.

 

journal for $350, ball bearing for $689

 

The only thing I have seen I did not like about there complete kits ( mustang kit) is the mild steel headers, idk why they don't offer a 321 stainless, cause we all know mild steel rusts and with the heat temps the headers receive no coating is going to last. I seen a guy selling a used on3 kit on racingjunk.com and the headers looked awful with surface rust. Hope they make the ls1 kits out of stainless. Also do ur homework on the turbo oil feeds, the most common mistake is the oil feed from newbie's on turbo's. If its a journal bearing turbo it requires no oil restrictor if its a ball bearing turbo it does require one and you should ask the manufacture there specs. I have seen more turbo's blew up due to this than anything. I'm interested in the 76mm feed backs. I may upgrade over the winter.

 

I'm asking the guy right now what size orifice the restrictor needs. He seems to want to sell me one for $25. I was just going to drill my own.

 

anyone have an update on these?

the one i bought (76mm journal bearing swapped out with a 1.0 a/r twin scroll t4 housing) i am still fabricating the system and trying to figure out the best way to design with twin scroll.

 

Is it worth going BB over the journal bearing? Will the BB support more power?

 

I'd say it's not worth buying the ball bearing simply due to cost vs quality. I am still building my system as well. I have the twin scroll 1.0 a/r as well. I just used a open flange I'm not worried.

 

I checked these turbos out, only thing I don't like is this I quoted from their ad:

"Warranty Info:
1 year on the hotside from manufacture defects, 1 month on the standard 70mm turbo and 1 year on the Master Power turbo."

means to me that the turbo only gonna last a month.... would you buy a $30,000 car that has a 1yr/100kmile warranty vrs. same looking car with 1mth/1000mile warranty for same scale price difference of $20,000 ???

I'd have a hard time spending $20,000 on a car only guarranteed to last me a month!!!

 

You guys think the 76 is capable of going high 9's in a 3400-3500lb raceweight with a forged 347 and TH-400. I really wanna touch 140's

 

Not a very good analogy. I get what ur saying bro. But that's a big difference in money and what ur buying lol

 

Seems like I'm going to try this turbo out and see what it does!