Neez

Hey guys, i never really got around to posting pics during the install and everything but here it is anyways.

2001 Z06:

Stock bottom end
PRC 227 CC heads, with 62cc chambers (11:1 compression)
Turbo grind cam
Fast 92/92 intake
Hinson Motorsports Single top mount kit
Turbonetics T78, with 75mm turbine wheel, 1.05AR
Tial Q50 bov,
Tial MVR wastegate.

Walbro 400lph pump, siemens 60lb injectors, FAST Fuel rails

RPM Stage 5 T56 Transmission
Monster stage 5 single disc clutch
DSS output shafts in the rear end
LG Drag spindles

Racestar 17x4.5" on M&H front runners, 15x10" in the rear on Mickey thompson street radial pro's.

Cars running on 7 lbs of boost , made 607whp, and 556ftlbs on 102 octane fuel 14* timing
and 552whp, 519ftlbs on pump gas 93 octane on 10* timing

Cars amazing to drive, will have some videos posted up in the next couple weeks when i get to the track to get some good data.

For the rest of this season will be on stock bottom end, this winter il be building a forged 370ci bottom end for next yr.

Milan

Take that screen off the turbo and put on a filter you will pick up power

Neez

I'd love to but there's no physical room to add one. Do you have any ideas on filters for it?

MVP'S ZO6

Can you put a piece of tubing on the turbo with a turn in the tubing then throw a filter on it?

Milan

I was thinking like an HKS mushroom filter like from the old school import days. Otherwise maybe do the cut down radiator and intake tube like the SC guys

MawneeC5

HKS mushroom wont fit. Not only will it hit the radiator. But because the hood goes down ahead of the turbo it wont clear the hood either. I have one and tried it on my setup..not even close to fitting and it looks like I had more room than the hinson manifold gives :P

Neez

Your right, their is no room. I had initially tried the setup with a smaller t70, and the turbo was just way way to small. the 7875 is a great size for it, it seems but being its a fair bit larger than the tc76 which hinson sends with them as the largest i had to cut a hole in the hood for the compressor housing already.

I believe i looked at your turbo build, and you had kinda the same setup but your turbo was a little bit more clocked off to the side?

madmatt9471

Looks awesome!

Soooo much more room to play too with the low timing you have assigned to it and keeping the Boost low with that amount of compression!

Thanks,Matt

slow ride

I'm sure if you asked nice Turbonetics could have made you a TC-7875 or 7575 billet You will have to do a radiator cut down or new one and tilt it more.

JDS99

Negative.. at least for the billet 7575.. I've had some discussion with them recently, and on the billet HPC wheels the 69mm and larger all require the T-series cover due to the exducer diameter. Biggest HPC wheel that will go in an S-cover is the billet 64mm.

Op, take a look at K&N. They have some really short filters you might could use. I want to say they have one with only a 2" filter length, but might be 6" flange ID. In which case you could just weld a 6" OD velocity stack to the compressor cover inlet and be good to go.

Really need to have something there, or you're going to suck all sorts of debris in there and either damage the engine or at least damage that cast compressor wheel. Doesn't take much when the wheel is spinning 80,000rpm

slow ride

I always figured they could trim the exducer down some, but didn't ask. I figured the 62-1 in our b covers did not have the same size exducer as a 62-1 in a s cover, but never checked on it. Jon, did you talk to Reggie about this or someone else? I'd just tilt the radiator or buy/make a cut down one to let a full size tube and filter set over on the other side like the supercharger guys do. That 7875 will make some jam if you lean on it that's for sure. In a little lighter car (FC rx7/6.0 iron block/6 speed) my friend went 9.87@150 non intercooled e85/meth with the 7575 in the 18-20psi range. Car was about 3000lbs but it had a terrible 1.69 60 ft.

Milan

What compressor cover is in that pic and what's the biggest turbo offered in that size?

JDS99

Good question. Not sure on the cutting down piece.. Info came back from Jon @ HuronSpeed, in response to some questions I was asking and he got with Reggie.

Back when I was asking about the 62-1's in the B-cover, I did speak with Reggie directly and he didn't mention that they would have to trim down the wheel to get into it. Though, that doesn't mean they didn't.

FWIW, I did find out the billet 61 flows 9lb/min more than the cast 62-1 and goes in a B-cover

He has a T-series cover .80 a/r (8-bolt cover). Biggest he can get in there is what he has or the billet 75 (smaller but flows much more).

slow ride

Is 90lb correct? What percentage is that? Anyway I really think I am turbine limited at this point and am praying someone comes up with a t3 dual v-band turbine housing in a 1.xx size

JDS99

My bad, typo... 9lb/min

Info i've been told is the following wheels are efficient to:

cast 62-1 -> 60lb/min
Billet HPC 61 -> 69lb/min
Billet HPC 64 -> 79lb/min
cast 66 -> 72lb/min
cast 72 -> 78lb/min

These are all I know. The cast wheels have flow charts posted here: http://www.turbonetics.com/catalog/compmaps/fig10.html but like so many of the others on these billet wheels, they aren't posting maps.

You just need to get yours on the road!!

Milan

Like a precision 7675???

narfdanarf

We did a custom radiator stood up so we could run a 6" intake/filter on my car.

FourG63 97GST

Good to see the unicorn kit, I'll be starting my Hinson build next weekend, just waiting on some misc.
I'll be running a Billet Precision 6775 .96 and E85, I'll like to break 600, I don't have faith at this point, but we'll see. I'm keeping the nitrous on the car just incase, Turn down for what?

venomws7

You'll easily break 600rwhp with that turbo on 346ci depends on the boost & fuel it will spool crazy fast.
But curious why you didnt go with at least Billet Precision 7275 ?

OP Good numbers and great setup any vids?

FourG63 97GST

I basically got a good deal on it while piecing this kit together, If this doesn't work, I won't lose, I'll just go with a 7875.