If the 7460 had proven to be reliable for track use I would. Sadly it has not.

 

Oh, crap. Yeah, I have a 3" AMS. I forgot about that.


They seem to work fine when not overworked.

 

exactly, I would think they would be ok if you kept them under 1.9 bar and checked the tightness of the flapper from time to time..

 

Well any extended track use is going to cause EGTs to climb and the 7460 has proven not to hold up particularly well. Plus do you really want to be paranoid that your flapper arm is loosening itself and about to destroy your turbo? I know I don't. Not to mention the impossibility of getting it serviced/rebuilt.

 

that is a valid point.. I have seen some horror stories with it on evo X..
The one we installed is doing fine, knock on wood, but I am conservative with fueling up top.. If it goes pop I have a new fp71 on the shelf..

 

My HKS loosened its wastegate arm,
And it gave CLEAR SiGNAL that it happened- in form of delayed boost response/spool.
I tightened it.
Now years later it's still tight.
And it holds 28psi on E85, and works as good as new.

I heard few complaints of HKS failing: let's say 10?!? Close enough?

How many FP and BBK's failed?
How many? 1000?
Likely.

How many OEM turbine housings crack?
Most.

Used within parameters per manufacturers directions, 2bar Max, it's reliable and likely more reliable than stock.

HKS has larger turbine for less back pressure than OEM, so concern for backpressure of HKS should be at most as any Stock Frame. Not more, as the post suggests.

I am pointlessly preaching, meanwhile I am totally enjoyIng mine along with entire shop-team of FFTec who for their personal use chose HKS.
And so much about racing, as if even 0.5% of this forum races with NASA, SCCA, or IMSA?
It's pointless discussing what we do not mostly do, and even than race parts have service life..use per spec and replace them if concerned.
No stock frame will stand to racing better then HKS, maybe worse as journal bearing turbo will fail on first oil surge occurrence.

I have extra one at home, that is how much I like it.

 

Personally, I like the HKS. I'd still have one if it weren't for the fact that I sold it and pocketed some cash after building the 71.

 

Owen Developments EVO 4-9 Ball Bearing 71HTA 49378-01580-71HTABB £1,426.09 (ex. Vat). Not a bargain when compared to the bargain basement price of the JB 71HTA, but not too bad when compared against the price of a 7460, 1.0XTR or BB Green w/MHI housing.

 

Do you ever track it? My worry is that the heat build up in a 20min session will cook it (as has happened to multiple people's 7460 on lancerregister.)

Then if it does develop a problem (big or small) what do you do? I cannot find a single instance online of someone getting their 7460 fixed/rebuilt by HKS. So its basically run it till it breaks then toss it.

I wish I had confidence in the 7460's durability and support through HKS.

 

they won't convert a JB to BB if it's been used, either. has to be brand new. meh. i'm happy as-is, so not too big of a deal.

i've found new CHRAs for about $1,000 but they take some time to get. i haven't found a place to repair them, as "they have a weird bearing configuration". this is from a place recommended from the HKS site. and most places seem to have never touched one.
such a great turbo, it deserves better support. but money is money and if they aren't making any, then it all goes away.

 

$2171usd. I wasn't too far off at $2500....

 

Hell, I did 333whp on 91 with an OG Green on the GST Motorsports Mustang Dyno at only 21# of boost or so...and it was torque limited because of the 6 speed.

You should be able to get close to 350 to 370 on the 71HTA...it's a bigger turbine wheel than the OG Green IIRC...51# vs 47#

 

71hta uses a stock turbine.

 

Yup. Direct fit to the OEM hot side.

 

First post updated with results (track tune).
Daily driving tune coming soon.