Do any of you guys have one of these simulators ? I had a SBC stroker motor built last fall. In my area it was way to expensive to gain access to an actual engine dyno. I am trying to determine what prop to run. I had the motor balanced so I can wind it up high, but so far from the props I was able to borrow it seems I need to know where the torque is.
I would be happy to compensate if someone was willing to take the time to help me out.
If so what info do you need?
Thanks,
Ned
I have desktop dyno. Here's what I need from you for specs:
Block Type
Bore (how much overbore)
What heads you're running
Valve sizes
Compression Ratio
Carb CFM
Manifold Type
Type Exhaust
Which cam do you run? (Make/Part Number)
Hyd Roller, Hyd Flat Tappet, Solid Roller, Solid Flat Tappet ???
Desktop dyno's fun to dik with but it's not really accurate. I think there was a Car Craft issue that built motors on the dyno and then built them on desktop dyno. It was relatively close, off by about 10% and the power bands were different. But if you want to download it yourself anything like Kazaa or Limewire should have it.
Thanks,here we go
Block: 5.7L SBC Bored +.040 Stroke 3.750
Heads: Canfield SBC Large Runner 23-600-65
Valves: IN 2.08 EX 1.60 Intake port VOL 220 Chamber VOL 65
Comp ratio was to be around 9-1 -18cc dished pistons were used (marina fuel)
Carb: 750 Edlebrock
Manifold: Single plane Pro Products (out of money)
Exhaust: Revolution Marine 4" Thru Hull (no mufflers)
Cam: (got this set-up at a bargain) Hyd Roller cam + Roller Lifters
Lobe Center Sep= 110.4
Valve Overlap= 3.8 Crank Deg
Intake:
Valve Opening= 1.9 BTDC
Lobe Center= 105.4 ATDC
Duration= 210.1 Crank DEG
Max Cam Lift= .31429
Net Valve Lift= .47144
Lobe Area= 23.27
Exhaust:
Valve Opening= 44.8 BBDC
Lobe Center= 115.4 BTDC
Valve Closure= 1.9 ATDC
Duration= 222.9 Crank DEG
Max Cam Lift=.33799
Net Valve Lift= .50699
Lobe Area= 26.45
Then we have our bargain roller rockers:
Intake + 1.6
Exhaust + 1.55
Thanks And If I owe you or if you have any suggestions let me know.
Ned
Desktop dyno's fun to dik with but it's not really accurate. I think there was a Car Craft issue that built motors on the dyno and then built them on desktop dyno. It was relatively close, off by about 10% and the power bands were different. But if you want to download it yourself anything like Kazaa or Limewire should have it.
For my purpose 10% would be close enough. It wold have cost me more than the price of 2 props to get a real dyno test. Thanks for the info
Ned
WHERE is SSLOWRIDER????????
I mess with Dyno from time to time for something to do, and I can tell you it is darn accurate, "BUT" just like anything else it don't know anything else but what information you feed it that's what it goes by!. I did a friend's motor once that he had dynoed and I came in within 1hp and the torque was right there with the dyno sheet he had!..
Ned, that is great information the only thing you need to complete it is the head fow numbers, otherwise it will be a guess from the list in the program and that will throw it off big time!..
Here's the flow numbers From Canfield's site for the 23-600-65 heads
VALVE LIFT....Intake.....Exhaust
.100_________72______53
.200________145_____107
.300________201_____143
.400________247_____175
.500________258_____190
.600________259_____200
.700________259_____203
Here's the flow numbers From Canfield's site for the 23-600-65 heads
VALVE LIFT....Intake.....Exhaust
.100_________72______53
.200________145_____107
.300________201_____143
.400________247_____175
.500________258_____190
.600________259_____200
.700________259_____203
Thanks, I'll have to play with it over the weekend!..
WHERE is SSLOWRIDER????????
He was in bed, asleep (unfortunately). The fun of 5AM alarm clocks.
I'll run it tonight and post up.
If you want, I can e-mail the prog to ya to play with as well. PM me an address or post one up.
Posting Permissions
Reply With Quote