Dynoed with Webbers

Steve Bisson · #1 (**permalink**) 04-13-2009, 09:53 AM

Jim,

Glad you are satisfied however like most others I'm confused by the numbers.

Now can we get out and drive. (weather permitting)

greg schroeder · #2 (**permalink**) 04-13-2009, 10:03 AM

That doesn't seem right.

I'm not sure about a particular set up, but for a predictable reference the Roush 427R with a single carb vs Roush 427IR with fuel injection might be a reasonable value comparison change expectation. They have really similar set ups other than the fuel. There's not much diffrence in power values. Actually the engine dyno sheet I got from Roush for my 427R with carb made more torque and HP than the advertized number for both the injected motor and the carb motor.

Mark Brye · #3 (**permalink**) 04-14-2009, 06:51 AM

Jim, I know Turbo Tech used to have a DynoJet. Is the place in Kent using a Mustang Dyno?

race-it · #4 (**permalink**) 04-14-2009, 10:18 AM

deleated post to save space.

race-it · #5 (**permalink**) 05-10-2009, 04:57 PM

This is the present set up for my engine. I have a backfire issue at idle and low throtle. Any suggestions from the guys that use webbers on what to do to minimize popping? I have to re-dyno due to dyno improperly set on last tune up.

347 Stroker
Stroke: 3.400
Bore: 4.030
Connecting Rods: Scat I Beam 5.400"
Pistons: J&E Forged
Cam: Solid Roller
106 Degree LSA In Ck 104 Degree
Dur. In 228@050 Lift .635 Inch
Dur. EX 234@ .050 Lift .638 Inch
Lifters: Comp Cams Solid Roller
Heads: Ford Motor Sports Aluminium 1.94 X 1.6
Rocker Arms: Comp Cams 1.6
Weber: 44 IDF 18990.030
Compression: 10.25 to 1

44 IDF Webber Set Up
Venturi ----------------36 mm
Aux Venturi -------------4.50mm
Main Jet ---------------145 mm
Air Corrector----------- 180 mm
Emulsion Tube---------- F-11
Idle Jet---------------- 55 mm
Pump Jet --------------.50mm
Needle Valve -----------1.75mm
Pump Exhaust Valve----- 55mm
Float Adjustment------- 32.5/10mm
Idle Fuel Screw--------- one turn out

Silverback51 · #6 (**permalink**) 04-13-2009, 10:30 AM

Quote:

Originally Posted by Steve Bisson

Jim,

Glad you are satisfied however like most others I'm confused by the numbers.

Now can we get out and drive. (weather permitting)

This weekend is looking nice, but we all know how long range forcasts can go.

race-it · #7 (**permalink**) 04-13-2009, 02:04 PM

Deleated post to save space.

race-it · #8 (**permalink**) 04-13-2009, 06:58 PM

The 347 stroker weber set up is shown in my pictures. Click on camera under my name.