loxxrider wrote:I don't have a whole lot of input, but I do love Precision's comp wheels and they are working hard on their turbine stuff too. I might start to trust them more in another year or so if they keep up the good work. Seems like the reliability has really gotten better since 2010.
Totally Agree! I've gained alot of confidence in recent years in their products which is why I place my fears behind me on this choice... plus I already have the turbo...
loxxrider wrote:I'm curious why you don't want to rev to 7800 or 8k. I did it on a DAILY BASIS for like 3 years straight or however long I had the car running on VEMS before I took it down for the current phase of the build. It's fine!
You did that on a virgin head and block?
The inclination to stay around 7500 is just longevity really. As power increases the assumption is that wear does as well. On top of that I'm not touching the stock balance and am pretty sure that an additional 500-600rpm of revving can drastically increase centripetal forces.
So choosing the 58mm as opposed to the popular 62mm comp size should help me achieve this while keeping the curve to the left. I'm think of throwing whatever balancing cost/efforts toward a possible Port N Polish to the head to further bring things to the left. But we'll see...

chaloux wrote:Go big or go home.
500whp on pump with a safe tune is big turbo mode. Jim did it with his pte but I'm not sure if he ran that tune daily (Jim?). That's a lot of power and you're going to have to sacrifice some spool methinks.
I'm going to do gtx3576 with either .82 or 1.0 a/r and qsv to hopefully spool before (even if just) 4krpm. But that ain't happening for a while. I don't have any power goals because the 4k is crazy with any more than 300
That's the sacrifices I'm talking about. Will the sacrifice of going 5862 show enough gains? Or will staying 5858 be enough to tiptoe into the 500whp mark with better drive-ability. I know it's almost splitting hairs here and a/r also plays a part...
P.S. Not sure if you noticed that the 5862 the direct comparison to your future GTX3576 in size, billet constuction and Ball Bearing usage.
Hank wrote:I say you run the turbo you have now, just becuase you have it. Upgrading it down the road isn't a big deal. Are you on a vband housing now?
Hank
I see what you're doing there! I could save the $500 and redirect it towards the IMS hardware!

...
To answer your question though, it's currently in T3 form now, but the upgrade throws in my choice of hotside FREE!
So I wanted to capitalize on that.
The choices offered are:
- T3 .63 or .82 A/R with 4 bolt (2.5") discharge
- T3 .63 A/R with 5 bolt discharge (with or without wastegate hole)
- T3 .63 or .82 A/R with 3" V-Band discharge
- V-Band inlet .64 or .82 A/R with V-Band discharge
- T4 Tangential .58 or .68 A/R with 3 5/8" V-Band discharge
- T4 Divided .84 A/R with 3 5/8" V-Band dischargeI could possibly go the "chaloux" route and go T4 divided with a QSV but v-band in/out simplicity is nice to have.
If I run my T3 now then I'd have to be the only oddball ordering a lame one-off T3 manifold from you, and that just wouldn't be in the spirit of IROZ Motorsports, now is it
