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38D 38D is offline
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What kind of lap times do you run at Mid Ohio now? I assume you run your M3? Any mods? If it is bone stock on street tires, you need to be turning at least 1:45s, or you're gonna kill yourself with 700hp. If it has any mods, you'll need to be turning even faster times. A 700hp 911 will be capable of doing 1:30s or better. These times are with the chicane.
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Old 01-10-2007, 06:04 AM
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Another data point -

Even with an LSD, on the street the 438 RWHP 930 has so-so traction with the Eagle GSD3 tires.....that is, compared to track tires on the street (Kumho V710).

Track tires for occasional street use is a bit...addictive
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- Craig 3.4L, SC heads, 964 cams, B&B headers, K27 HF ZC turbo, Ruf IC. WUR & RPM switch, IA fuel head, Zork, G50/50 5 speed. 438 RWHP / 413 RWTQ -
"930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe
Movie: 930 on the dyno
Old 01-10-2007, 06:20 AM
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Craig,

Are you running 315's?

Jim
Old 01-10-2007, 06:44 AM
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Me like track days
 
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I am. With 275s up front. I get rubbing up front approaching full lock and in high compressive tight corners -
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- Craig 3.4L, SC heads, 964 cams, B&B headers, K27 HF ZC turbo, Ruf IC. WUR & RPM switch, IA fuel head, Zork, G50/50 5 speed. 438 RWHP / 413 RWTQ -
"930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe
Movie: 930 on the dyno
Old 01-10-2007, 06:49 AM
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How big could you go in a stock 930 fendered car for the rears, I have little 245s up front which will serve fine for my purpose.
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Old 01-10-2007, 06:25 PM
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315s
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- Craig 3.4L, SC heads, 964 cams, B&B headers, K27 HF ZC turbo, Ruf IC. WUR & RPM switch, IA fuel head, Zork, G50/50 5 speed. 438 RWHP / 413 RWTQ -
"930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe
Movie: 930 on the dyno
Old 01-10-2007, 06:41 PM
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In the last few years we have built quite a few 700+ hp Porsche engines. They have all been turbos and reliable. I will post some pics of our latest street car project, a 3.4 twin turbo in a 91 C-2 when I have more time.

It does take a pile of $$. The last 3.2 turbo, yes, 3.2 turbo, made over 600 but, that price included a trans regear. The cost was over $45,000. This was a 3.0 liter turbo engine converted to 3.2 and everything was purchased new ie: intercooler, headers, turbo, engine managment, fuel sys. etc. etc. very costly.

We built another 3.3 liter engine that makes 637 at 1.2. it is in a 1981 911 rebodied to a 930 and it has been together and racing, without failure for three years now.

We have another one in progress that we may or may not use ITBs on.
It is also a turbo that we want to make a lot of HP for the cust but, budget is often the issue.

My car is a track car GT-1 class in PCA and we make over 700. It is a single turbo car. ITB with twin 55 lb injectors per cylinder. Twin plugged
with Haltech engine managenment.

I have in car video of my car posted up on the thread that Craig911 started. Check it out.

I love this stuff.
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Old 01-11-2007, 12:29 PM
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Quote:
Originally posted by gtu935
I love this stuff.
I love the noise your car makes when you unleash full boost
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1981 UK 930. G50/01 shortened, 964 3.8RS Fibreglass Body Kit, 18" Alloys 8.5" F & 10" R, 225's F & 285's R, Special Colour Metallic Blue Paint, FIA Sparco Evo's, A/C and Air Pump removed, Electronic Boost Controller, GHL Headers, Tial46 WG.
Fitting - New service kit.
Needs Fitting - Innovate XD-16 Kit, Kokeln IC. Stephen's K27 HFS, EVO Intake Assy & his Modded USA Fuel Head.

1983 UK 911 3.2 Carrera Sport Coupe. Black, Black Leather with Red Piping, Black Alloy Gear Knob, K&N Air Filter Element, Turbo Tie rods.
Needs Fitting - K&N CO Sensor, Round A/F Dial Gauge, Factory Short Shift Kit.

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Old 01-11-2007, 02:08 PM
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Quote:
Originally posted by NathanUK
I love the noise your car makes when you unleash full boost
Are you talking about the sound the wastegate makes when it opens and dumps gases to atmo? YUP, that sounds amazing! Sounds like a jet engine in the back there

It'd be even more impressive with a twin setup
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Old 01-11-2007, 03:20 PM
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I have some pictures of the twin turbo car in it's "being built" stages. I will upload them as soon as I can.
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Old 01-11-2007, 05:04 PM
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Merv, I wasn't sure what the noise was, but it sounds like a rush
I think you are correct though.
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1981 UK 930. G50/01 shortened, 964 3.8RS Fibreglass Body Kit, 18" Alloys 8.5" F & 10" R, 225's F & 285's R, Special Colour Metallic Blue Paint, FIA Sparco Evo's, A/C and Air Pump removed, Electronic Boost Controller, GHL Headers, Tial46 WG.
Fitting - New service kit.
Needs Fitting - Innovate XD-16 Kit, Kokeln IC. Stephen's K27 HFS, EVO Intake Assy & his Modded USA Fuel Head.

1983 UK 911 3.2 Carrera Sport Coupe. Black, Black Leather with Red Piping, Black Alloy Gear Knob, K&N Air Filter Element, Turbo Tie rods.
Needs Fitting - K&N CO Sensor, Round A/F Dial Gauge, Factory Short Shift Kit.

http://www.danasoft.com/sig/Iamnotanumber.jpg
Old 01-12-2007, 03:30 PM
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The noise has got to be the exhaust flow throuh the wastegate.
My 700+ engine is a 3.8 with twin 55 lb fuel injetors per cyl staged. They feed the engine through 41mm independent throttle bodies. The intecooler core is 3.5 by 12 by 24. It has twin plugs. Haltech E6K for engine management. The turbo is a Turbonetics T72. Wastegate is a 60mm HKS. This is a road race car.
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Old 01-13-2007, 04:05 AM
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gtu35, how do you find the Haltech? Is it a good EMS? What's the idle quality and cold start quality like? I guess it all depends on the tuner, but I'm interested to hear what you think of it.
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'89 911 Turbo Cab
Protomotive MAP ECU, Twin Plugged Heads, GT2-EVO CAMs, 3.3L fully finned P&C's, ARP fasteners, C2T head gaskets, Titanium Retainers, Turbo spec valves, springs & guides, 964 splash valves, GT35R BB turbo, GSF Stainless Headers, Magnaflow Exhaust, Full bay Intercooler, TiAL 46mm w/gate, TiAL 50mm BOV, Apexi AVC-R EBC, SPEC Stage3+ Clutch kit, Crane CDI Ignition
Old 01-13-2007, 05:44 PM
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The Haltech ECU is capable of good cold start and warm up but. it really is up to the tuner. We spend a lot of time tuning for these qualities in the finished product. Especially here in NY where the cars may see 15 degrees in the winter and 95 in the summer months. Haltech has quite a few ECUs available and they are based in Australia right by you.

Check out thier web site
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Old 01-14-2007, 06:46 AM
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Yes, I know Haltech is an Aussie brand, as is Motec and Autronic

I was just curious about the quality of the overall Haltech solution (i.e: software, programmability, quality of idle/cold start etc...). It is the cheaper solution when compared to Motec and Autronic, so I was just curious what you thought of it.

If I do go Haltech, I'd opt for the E8 series, since it has support for the stepper motor idle control (perfect for my turbo'd Carrera).

Here's the E8 specifications.
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'89 911 Turbo Cab
Protomotive MAP ECU, Twin Plugged Heads, GT2-EVO CAMs, 3.3L fully finned P&C's, ARP fasteners, C2T head gaskets, Titanium Retainers, Turbo spec valves, springs & guides, 964 splash valves, GT35R BB turbo, GSF Stainless Headers, Magnaflow Exhaust, Full bay Intercooler, TiAL 46mm w/gate, TiAL 50mm BOV, Apexi AVC-R EBC, SPEC Stage3+ Clutch kit, Crane CDI Ignition
Old 01-14-2007, 04:35 PM
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We have used both the E11 and the E 8. Both are excellent
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Old 01-15-2007, 04:33 AM
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700 reliable HP .. at the flywheel is not hard to acomplish with an air motor.. real easy with a water motor... that is close to what the engine in my old GTR made . Twin turbo..used a modified single throttle body with Carrera intake with Motec.. carillo rods, stock 3.6 turbo Ps and Cs with mild cams..the motor never dnfd... the car had a lic plate on it so I drove it on the street...other than that 90 mph first gear it was fun to drive , took it to Road America in 2000 http://www.pca.org/clubrace/2000_results/000902_roadamerica/g1f.htm
and with a bad push and the 4 speed box geared way to tall at 190mph was the fastest car by a full second on the track through traffic starting DFL in the race ( I beleive the car had at least another 3 seconds in it with gearing and set up) took it to 7500 all the time at 1.2 bar . We took the motor completely apart at the end of the season and put it back together and didn't replace a thing.. bearings , nothing... As a matter of fact I still have the motor sitting in my shop.. you want it J/K
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Old 01-23-2007, 11:14 PM
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Wow! Vz935, you have an impressive group of track cars! If you don't mind my asking, is the 962 as much of a pleasure to drive as I've heard, compared to other prototypes of the era? Which one's your favorite?
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Old 01-24-2007, 02:15 PM
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I would say along with all the comments add a water injection system to help cool the engine. I had snowperformance.net kit and it worked great.
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Old 01-26-2007, 01:40 PM
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Not to change the subject, but what would be anyones opinion on a dual-ball bearing pt-67 with a ported "s" cover and T-4 hot side? I just want some feed back as I just got it the other day brand new and paid $1200 for it. The wheels spin so easily that I a light breeze gets them going. I am pretty excited to see how it does on the car, I am hoping for 550 to the tire.
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Old 01-26-2007, 06:22 PM
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