This is a review of the On 3 Performance - Turbo Kits for Ford Mustangs billet Ball Bearing 67mm turbo.

I picked up a set of these turbos after having good luck with On3's standard bearing turbos in the past. I wanted something affordable, but with some modern amenities and updated aero wheels. I sold PTE, Turbonetics, FP, and Garrett turbos from 2003-11 so I saw the huge improvements turbine and compressor wheel designs have made over the years in moving air with great er efficiency. On3's billet line up on paper gives a great gap between improved efficiency and cost. Similar turbos sell for $2200+in ball bearing form
Precision Turbo PT6766 CEA

These are the turbos I have purchased
http://www.ebay.com/itm/On-3-Performance-Billet-67-67mm-Ceramic-Ball-Bearing-Turbocharger-CNC-Comp-Wheel-/131310587772?pt=Race_Car_Parts&hash=item1e92b88f7c&vxp=mtr
It came packaged well with super janky instructions. Really, if you need instructions you should not be buying a turbo at all.

Turbo was perfectly clean and preoiled.

The Compressor is obviously machined billet AL and not cast, as is the backing plate which is a great sign of quality. Both Compressor and turbine wheels were balanced (I verified the rear of the compressor was balanced with material removed) I did not check the dynamic balance of the assembly as I don't have the $250k machine to do it.

Wheel specs were sent as follows

Compressor:

Inducer: 66.6mm
Exducer: 84mm
Inlet: 100mm
Outlet: 62.5mm

Exhaust:

Flange: T4
Outlet: 3” Vband
A/R: .81
Inducer: 74.2mm
Exducer: 64.5mm

And checked out





The Compressor is definitely updated tech with a thin center shank and much larger, longer, and more swept blade area. It also has an airfoil profile unlike most cast turbos which are just a uniform piece of material. Compared to the GT45 everyone loves


And a GT42


It does not take an engineer to see what compressor is going to move air more efficiently.

The turbine wheels looks more like the Aero shape of Garret's GT turbine, which is GREAT news! This is compared to a China GT45 (top) and a Garrett T31 turbine of a 60-1 (left)




Most people don't realize when the GT35r came out and crushed everything in the 6xmm arena, all they did was change the turbine and used the same compressor (very, very slightly reworked) as their previous T-61. People were bolting these on and gaining 60-80whp all from turbine efficiency. So, I am happy to see that technology used/mimicked here.

You can hear and feel the BB CHRA. Its not as loud as a Garrett CHRA which uses steel BB's, but its obvious especially when compared side by side to a STD Bearing unit.

Another nice touch is a true unique identifier. I dont know if anyone is actually keeping track here, but again its nice to see!


All and all, I am 110% happy with my purchase. These are by FAR the nicest "Chinese" turbo I have ever seen, and I have had 100's pass through my hands over the years. You can buy 2 for less than one of its competitors, all with a true BB CHRA. Also, its interesting that these wheels seem to be true one-off units, as they don't match any of PTE/COMP/FP or Turbonetics wheels I have seen or can find in the directory, and are obviously not BW/Schwitzer copies.

Funny thing is, this is about the turbo I asked PTE to build in 2008 (6762) for a TT Supra set up and they would not do it. Glad Chad found someone that would!! With the turbine wheel/housing sizing, I think this would work great on 13b as well, and will try to do some testing in the next few months.

I have about 300 miles on these now, and the still have ZERO shaft play, same as they came out of the box. The are very responsive and I can see full boost in all gears on a stock 5.7 (twins), and positive manifold pressure @1600 rpm in 4th. I will be installing the rest of my fueling soon, and will have dyno charts available as soon as I build an intercooler set up.

Any questions feel free to ask. I hope this helps some people considering this option since its a new turbo to the market.

 

 

it is always nice to have additional turbo options.

the turbo has a 6.98 compressor which places it in my mid size category... output should be around 70 to 77 pounds per minute. around 500/550 max rotary hp.

the compressor is a 63 trim which places it more toward top end flow as opposed to faster spool. numerous 7 inch compressors are 53 trim...

the hotside is 5.87 inches. this is similar to the common P trim. BW turbos w a similar compressor area are a more rotary friendly 6.31. also, the EBAY ad shows a non-divided hot side housing which is generally considered to be a disadvantage to divided w the rotary.

the price is friendly

not necessarily knocking the turbo, just placing it in perspective.

see my sticky thread "Turbo Comparisons" in the Single Turbo Section if you don't understand the numbers or want comparative context.

howard

 

Dyno Results

https://www.rx7club.com/v-8-powered-...k-ls1-1076377/

 

As an update the set up has been sold. I was made an offer I could not refuse! The new owner will be keeping up with the thread here. Hope to see one or 2 of these on a rotary soon hurting some feeling in the dollar per HP catagory here!

Turbo Review; On3 Billet BB 67mm - LS1TECH

 

i think it would be interesting to see how one holds up to the rotary heat, turbos get put through the ringer when bolted to one of these engines due to the excessive EGTs and fuel to oil dilution factors.

these turbos are under $700 now, you can't touch anything ball bearing for nearly twice that much.

 

Only one wat to find out!

Not sure the EGTs are much different though. What is a healthy EGT in rotary is a healthy EGT in a piston engine as well in my expereince.

 

eh, ****'s going slow here so probably wouldn't be soon that i could try one out. maybe if i got someone to trade for this S472 1.32A/R.

eh screw it, my high compression engine is built for a big turbo versus smaller so maybe i'll try one on something else a little later.