NZ951

Below are specifications to use on the Engine Analyzer. Given I have not verified the specs of the mods personally, I cant assure they are precise, but I have them from a source that seems credible.

Shortblock specs

Bore: 100
Stroke: 78.9
# of Cylinders:4
Piston rings: 3 Standard tension
Rod lenght: 150
Piston Skirt: Typical
Bearing Size: 1.26 Calc
Piston Top: No coating
Cyl Leakage:Low Leakage

Cooling Fan type: Electric
Water pump & drive: Production Size
Engine+ Dyno Inertia: Eng only,Std Flywheel
Design: Typical Windage

Head (measure in inch)

LINDSEY RACING STAGE 3 Porting with 47,8mm intake valves

Intake
Valve diameter 47.8
Average port diameter 42.13
Port length 82.5

Full Intake Flow table @ 28"
Valve Lift"......mm......Flow,CFM
0,07874..........2..........49,57
0,15748..........4..........91,76
0,23622..........6........133,526
0,31496..........8........168,1
0,3937..........10........201,696
0,47244........12........226,357
0,55118........14........239,894
0,62992........16........248,26

Anti-reversion % 0
Compression ratio 8

Exhaust
Valve diameter 38 (Lindsey's HighVelocity Option...)
Average port diameter 34.16
Port length 107.5
Single flow coef .597
Anti-reversion % 0

Chamber design Typical Wedge

LINDSEY RACING STAGE 2 Porting with 45 mm intake valves

Intake
Valve diameter 45
Average port diameter 42.02
Port length 82.5
Anti-reversion % 0

Full Intake Flow table @ 28"
Valve Lift"......mm......Flow,CFM
0,07874..........2..........51.109
0,15748..........4........102.65
0,23622..........6........147.469
0,31496..........8........174.329
0,3937..........10........194.797
0,47244........12........211.058
0,55118........14........222.474
0,59055........15........226.759

Exhaust
Valve diameter 40
Average port diameter 34.16
Port length 107.5
Single flow coef .597
Anti-reversion % 0

CR 8:1............................................Material/coating: Aluminium
Chamber design:Typical Wedge.................Burn Rating:Typical

STOCK 951 HEAD
Intake port specs:........................... Exhaust port Specs
# valves/Ports: 1valve &1 port .................1 valve& 1 port
Intake valve dia: 45....................................... 40
Avg port Dia: 41.39 .......................................34.16
Port lenght: 82.5 ..........................................107.5
Anti-rev: 0%................................................. 0%

Intake flow table @ 28" Ex. Single Flow Coeff: 0.597
Valve lift ". ..........mm.....................Flow CFM
0.0787..................2........................ 47,047
0,1575 .................4.........................95,524
0,2362 .................6.......................146,386
0,31496 ...............8.......................168,395
0,3937 ...............10.......................178,596
0,4724 ...............12.......................194,373
0,53149..............14....................... 201.73

CR: 8:1 .....................................Material/ Coating: Aluminium
Chamber design: Typical Wedge......... Burn rating: Typical

Intake

STOCK 951 INTAKE:
Runner Dia @ head: 41.5 Throttle Body CFM rating: 376 (from flow #)
Design: Tapered runners
Runner length:327
Runner Flow Coeff: 3 Air Cleaner CFM: 326 (from stock AF dimensions)
Runner taper: 2.24
Manifold Type: Single plenum-EFI
Intake Heat: No heat.

Exhaust


Cam
Webcam #274

Intake Profile
Centerline. deg ATDC 106
Duration @ .050" 234
Open @ .050 ", BTDC 11
Close @ .050", ABDC 43
Max Lobe Lift .484
Gross valve lift .484
Duration @ .200" 163.6

Exhaust Profile
Centerline. deg ATDC 110
Duration @ .050" 234
Open @ .050 ", BTDC 47
Close @ .050", ABDC 7
Max Lobe Lift .484
Gross valve lift .484
Duration @ .200" 163.6

Lobe separation 108

Turbo
LINDSEY RACING Stage 5 "Club" turbo (Turbonetics 60-1)

Island CFM 544.67
Island pressure ratio 1.725
Island efficiency % 78
Surge CFM 320.66
Turbine nozzle diameter 1.26

Intercooler
LINDSEY RACING Stage 5

intercooler CFM 167

NZ951

PS if anyone else has used it, can you please post every possible stock and modded Specs you can? I have a LOT of Lindsey Racing parts in a profile I found so it will be cool to make an online resource.

NZ951

Does anyone know the stock cam lift?

DanG

Stock "early" NA and all Turbo cam lift is 12/11mm (intake/exhaust)

Stock "late" NA cam lift is 12/12mm (intake/exhaust)

https://rennlist.com/forums/944-turbo-and-turbo-s-forum/201615-944-turbo-and-high-lift-duration-cam.html

NZ951

Awesome, thanks...

Anyone got the head specs like valve and port diameters?

PS so far the engine analyser with almost my exact setup, is within 5 WHP of what I dyno'ed...

theedge

Are you gonna post all the settings and such? I think I have a copy at home, id love to have an estimate of what my car will do.

How do you account for mods like head porting etc?

NZ951

Depends what people want! there are hundreds of settings.

Maybe we try and create a library of the various?

You can change the port diameters...

User 41221

I must have missed it... whats the "Engine Analyzer"?

Regards,

DanG

http://www.performancetrends.com/EA30.htm

"Desktop Dyno" Helps predict what various things might do for a specified engine's output.

NZ951

Ok, if anyone has a part with known or close to known specs, I will post it in my initial post...

Duke

Very impressive piece of software!
Please let the specs coming... please share all the parts file you have made so we can make a library.

hosrom_951

NZ: the chamber design is not a hemi

NZ951

Yeah its amazing eh!

I am working on my runner length for the intake, looks like I will gain 20-25HP up top and lose 5-7 down low with 8 inch runners. Nice to be able to have a clue before I make the whole thing

Skunk Workz

I made that spec...if you have it as a user example from the EA. I have better info on that head now.... The Lindsey ST3 head and Intercooler have these specs. I also have most other specs on the 951,both stock and several other vendor's products,like flow figures on the LR heads,both St2 and 3,and the stock head,intake specs/flows,TB flow,etc.


Head
LINDSEY RACING STAGE 3 Porting with 47,8mm intake valves

Intake
Valve diameter 47.8
Average port diameter 42.13
Port length 82.5
Single flow coef .532 (I have a full flow table available...)
Anti-reversion % 0
Compression ratio 8

Exhaust
Valve diameter 38 (Lindsey's HighVelocity Option...)
Average port diameter 34.16
Port length 107.5
Single flow coef .597
Anti-reversion % 0

Chamber design Typical Wedge

intercooler CFM 141...(from flow numbers)

DanG

Screwed around with this a little tonight. Used a lot of the base settings that were already in there.

Seems pretty fictional until I actually get my car together to have something to compare numbers with.