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Henry Schmidt's Avatar
 
Join Date: Apr 2004
Location: Fallbrook, Ca. 92028
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Supertec 3.1 liter Short Stroke 9000 RPM 2 valve

Supertec 3.1 liter Short Stroke 9000 RPM 2 valve
1982 930 Turbo case (GT3 squirters)
Shuffle pins
Boat Tail
Supertec SuperCrank billet 66mm full cross drilled
R&R billet connecting rods (GT3 config: 53mm big end, 21mm small end & 130mm oal)
GT3 Bearings coating by Calico Coating
996 TT oil pump
Racing IWIS chains
Supertec idler arms
964 steel countershaft
Supertec Head studs
LN Nickie cylinders 100mm
Supertec 906 cooling tin
10:1 JE FSR pistons, 60 grams lighter than conventional pistons
Custom DC 80 cams
Early forged rockers w/dry film pads
Extreme Cylinder heads
Port Flow Analyzer v3.0 EXTREME CYLINDER HEADS
Test Comments:
Vlv Dia
1.850"
1.575"
Stem Dia.31"
Lift Range Test Flow Leak Corr Pres Pres CFM
Int #1 .100 4 28.00 34.00 .0 67.7
Int #1 .200 4 28.00 79.00 .0 157.2
Int #1 .300 5 28.00 73.50 .0 216.8
Int #1 .400 5 28.00 84.00 .0 247.8
Int #1 .500 5 28.00 89.50 .0 264.0
Exh #1 .100 4 28.00 25.00 .0 51.3
Exh #1 .200 4 28.00 53.00 .0 108.7
Exh #1 .300 4 28.00 75.00 .0 153.8
Exh #1 .400 4 28.00 87.50 .0 179.4
Exh #1 .500 4 28.00 93.00 .0 190.7

50mm PMO Carbs (manifolds 41 x 50mm)
Burnham Motorsport Twin plug distributor
Burnham Motorsport sump cover
Series 900 fan shroud
Supertec Power Pulley
Supertec RSR flywheel









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Henry Schmidt
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Last edited by Henry Schmidt; 05-12-2013 at 07:29 PM..
Old 05-08-2013, 02:15 PM
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Henry Schmidt
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Old 05-08-2013, 02:21 PM
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I forgot to mention:
Extreme Cylinder valve springs and titanium retainers
Hargett valve covers
M&K RSR muffler
Ceramic coated 1 3/4 German Racing headers
Custom wiring harness by Supertec Performance
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Old 05-08-2013, 02:31 PM
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Porn-sche. Looks fantastic.
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Old 05-08-2013, 02:46 PM
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Now that's a proper short stroke
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Old 05-08-2013, 02:56 PM
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Cool - what sort of HP at which RPM do you expect (and RPM at peak TQ)?
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Former: 16 Cayman GT4, 73 911S, Two 951S's, 996 C2, 993 C2, BMW 635CSi Euro, Ferrari 550 Maranello
Old 05-08-2013, 02:57 PM
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KTL KTL is online now
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SHAZAM............. That's hot.

If someone asks whether you used the cam oil line restrictors, you have my permission to internet-punch them.

What type of intake valve covers are those?
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Old 05-08-2013, 03:30 PM
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Quote:
Originally Posted by KTL View Post
What type of intake valve covers are those?
These:
HPP Porsche Valve Covers - Porsche Products HPP
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18 GT3 Manual, 73 Carrera RS 2.7 Carbon Fiber Replica (240hp & 1,890 lbs), 06 Evo IX w/ Ohlins DA's, Brembo 6-piston, E85 tune (415hp)
Former: 16 Cayman GT4, 73 911S, Two 951S's, 996 C2, 993 C2, BMW 635CSi Euro, Ferrari 550 Maranello
Old 05-08-2013, 03:38 PM
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Would look nice in a well set up 944...

I must take a cold shower now... Beautiful!!
Old 05-08-2013, 04:28 PM
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Yes please.
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79 911SC RoW
"Tornadoes come out of frikkin nowhere. One minute everything is all sunshine and puppies the next thing you know you've got flying cows".- Stomachmonkey
Old 05-08-2013, 04:55 PM
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Quote:
Originally Posted by GrantG View Post
Cool - what sort of HP at which RPM do you expect (and RPM at peak TQ)?
Only a guess but we're hoping for 340 hp @ 8200 (maybe more as it approaches 8500 if the headers are right) with 250 ft/lb @ 6500 ??

I wanted to use a better set of headers but at some point you have to just run it and see what you get.
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Old 05-08-2013, 04:56 PM
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WOW... Now I'll need to buy another car so I have an excuse to have you build one for me
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1970 911E Sportomatic Albert Blue
1971 911T Sunroof Coupe w/ Twin Plug 2.5 MFI
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Old 05-08-2013, 05:23 PM
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This is nothing but pornography and should be banned - banned I say.
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944 TURBO - 1986
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Old 05-08-2013, 07:21 PM
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Henry,
Amazing! You just keeping pushing the envelope on engine design.
Vr,
Scott
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1970 911T w/ 2.4S
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Old 05-08-2013, 07:57 PM
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I see headers being a limitation. We saw 18whp more with a custom set of stepped headers then 15/8" euro George's on a mostly stock 3.2L and we were able to pull timing out and maintain power. I would think there are probably larger gains to be had with big cams.

None the less. SWEET engine. Any reason other then cost why you aren't using Ti GT3 rods? I was given a set and have been salivating over getting them into my 3.0L.

Last edited by Evan Fullerton; 05-08-2013 at 09:51 PM..
Old 05-08-2013, 09:40 PM
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Beautiful job.......

As always, a beautiful job! I know the owner of this engine will be a proud papa!
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1980 911SC coupe "Zeus" 3.3SS
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Old 05-09-2013, 05:25 AM
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Cylinder air shrouds

Just noticed that the ones on your engine look different than the ones off my 3.0 SC engine. Are they more efficient? Something you make in your shop? Are they available to us mere mortals?

Thks,
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Old 05-09-2013, 05:28 AM
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He makes them. I have them on my 3.0l. I believe they are 904 inspired or something like that.
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Old 05-09-2013, 06:41 AM
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Henry Schmidt's Avatar
 
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Quote:
Originally Posted by Evan Fullerton View Post
None the less. SWEET engine. Any reason other then cost why you aren't using Ti GT3 rods? I was given a set and have been salivating over getting them into my 3.0L.
When we considered the RPM we were trying to achieve and mixed it with a piston 30% heavier than a GT3 piston, we thought (perhaps conservatively) that the titanium rods would add another layer of maintenance.
Plus, I really like the R&R rods that Charles @ LN Engineering sells.
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Old 05-09-2013, 07:02 AM
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Quote:
Originally Posted by fred cook View Post
Just noticed that the ones on your engine look different than the ones off my 3.0 SC engine. Are they more efficient? Something you make in your shop? Are they available to us mere mortals?

Thks,
The tin is made by us and is a replica of the 906 cooling tin. When we made our 81mm Nikasil racing cylinders, we replicated the cooling fins of the 906 cylinder and this cooling tin promotes higher air flow. That in combination with the Power Pulley that reduced fan speeds, the cylinders can pull more heat from the heads.



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Old 05-09-2013, 07:30 AM
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