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Barry Grant Mighty Demon Carb Upgrades
"ET SLAYER" Carburetors
Making Mighty Demon Carburetors Even Better!
NEW LOWER PRICING For 2010!
Mighty Demon/ETS 650-Mighty Demon/ETS 750-Mighty Demon/ETS 825
Mighty Demon/ETS 850
One Great Price $729.00
Mighty Demon 650/750/825/850 Street Slayer $639.00
Barry Grant usually raises prices in Mid December, we have not been advised if there will be a price increase on the Mighty Demon carburetors this year, we'll keep you posted.
Updated 3.22.10
We use the great Mighty Demon Carburetor by Barry Grant as our base carburetor.
These Mighty Demons are a great carburetor right out of the box, but over the years we have found some improvements can be made to the Mighty Demon to make them even better.
Converting a Mighty Demon to the ET Slayer:
Fuel aeration or foaming in the bowls: This is caused by the Mighty Demon/Holley needle and seat (designed in the 50's) spraying fuel into the top of the bowl causing the fuel to foam. It doesn't take a rocket scientist to figure out that this will cause the float to become unstable and bounce around changing the fuel curve as well as pre-emulsifying the fuel in the bowl rather than in the circuit where it can be controlled by the air bleeds.
Our new Bottom Feeder Needle and Seats put the fuel into the bottom of the bowl virtually eliminating all foaming of the fuel. End result, a solid stable fuel load in the bowl and a steady float level bringing even more consistency to your ET's. We do not physically modify the Mighty demon and any component part can be replaced with the stock pieces in a pinch. You'll never be disabled because of a modification we've done to your Barry Grant carburetor.
| At 8 PSI Note how the fuel is foaming in the bowl with a conventional Holley style needle and seat. |
 |
Clean solid fuel with the "CARP" Needle & Seat. Ask any NASCAR or ProStock Team what N&S they use. Any questions? |
Look at the fuel in the left bowl Compare to the right bowl
Which do you think will deliver more consistent ET's??
Do you want to win races or practice loading your car?
The Bottom Feeding "Carp" Needle and Seat
Conventional style Top Loader
The Mighty Demon Standard .110 N/S will flow about 189 pounds per hour at 3 PSI the "Carp" .120 (Standard Upgrade) will flow 239 pounds per hour at 3 psi. You've got a good high volume pump and now you can utilize that pumps full capacity.
Fuel slosh: Another aggravating problem that causes ET's to vary as you go down the 1320. The fuel being delivered into the bowls under pressure colliding with the float , bumps in the track, a little steering correction and those big square floats raise hell with the fuel level in the bowls.
By using our winged or "V" shaped float in conjunction with our "Bottom Feeder" N/Seats these irregularities can be virtually eliminated.
G Forces: Your hard launching bracket car leaves with huge G Forces pushing all the fuel away from the rear main jets. This causes the back side of your engine to go dead lean until the fuel levels back out and begins to feed the back half of the carb again. Try and dial that on your window. By using Barry Grants own encapsulated jet extensions (Meaning the jet actually holds the extension in the metering block) in the rear bowl, as the fuel tries to escape from the jet the extensions are still deep into the fuel, result, no lean or launch stumble caused by a fuel curve drop on launch.
Click for large image
NEVER Stick Gaskets: Stamped from M-15 Fiber material exclusively for FBO Systems from our design. This material will NOT Stick Ever, won't tear and leak. Change jets in your Mighty Demon/ETS after every pass or every lap, you'll never miss a round or a lap because of Barry Grants sticking, tearing, leaking bowl or metering block gaskets.
In Fig. 1 below you can see how we've beefed up the bowl gaskets, removing holes that are not required for Mighty Demons and King Demons, increased the overall size for better sealing and a better fit.
Check out the metering block main circuit passage in Fig. 2, note the design, now look at your current gasket you'll notice that the gasket covers a major portion of the circuit. Now look at the way our Mighty Demon ET Slayer gaskets are cut to allow full fuel flow to the booster.
Both the King Demon and Mighty Demon metering block gaskets have the modified main circuit feeds shape corrected to allow maximum fuel flow.
Now Available for all Speed and Mighty Demon Mechanical Carburetors
Fig. 1 Fig. 2 Click for larger image
It's a Simple Investment for Success
FBO ET Slayer Mighty Demon upgrade Includes:
2 Bottom Feeder N/S installed
2-Winged and notched floats installed
1-pair jet extensions in rear bowl Installed
Set of NEVER Stick Gaskets
Full inspection and baseline set up
Drill idle air bleeds to match cam duration
Hard copy version of our 47 page book "Tuning to Win"
Carb price .....................$549.00
Upgrade package ........($204.00 If purchased individually $240.00)
"FBO ET
Slayer" Carbs ....$753.00
Now $733.00
650 CFM-750 CFM-825 CFM-850 CFM are all available One Great price
FBO ET Street Mighty Demon upgrade Includes:
1-Winged and notched float installed in Rear Bowl
1-pair jet extensions in rear bowl Installed
Set of NEVER Stick Gaskets
Full inspection and baseline set up
Drill idle air bleeds to match cam duration
"FBO ET
Street" Carbs ....$659.00
Now $639.00
650 CFM-750 CFM-825 CFM-850 CFM are all available One Great price
Now Available-FBO's New Warhead Spacer $149.95
includes 2 of our exclusive 3/16 Aramid Fiber Gaskets-Long Stud kit and Our 2" effective Warhead Spacer plate.
Our Warhead spacer made 20 HP on a 700 HP motor from 3500-7000 RPM
Cleans up idle quality, shears reversion and directs fuel to all four corners quicker and more efficiently.
Click Image for details
SUMMER SPECIAL Add Warhead spacer with ETS carb for $100 save 50 bucks.
Embroidered ETS Carburetion or FBO Ignition T's on sale $18.00
The Final Round 2006 .... Left lane Wins 11.21 on a 11.20 dial .021 light, ETS Carbureted.
Tired of These Non-Stick Gaskets?
Click for full size mess
Never again with ET Slayer gaskets from FBO
Ask Frank Garrett of Bend Oregon:
First 9 races of 2007 I went 9 rounds in 9 race events
Since FBO Upgraded my 850 Mighty Demon I've gone 26 rounds in 6 races with 3 WINS and pocketed over $900.00 in Winnings, moved from 16 place to second at my home track, Won the Mopar Nat's at Woodburn, National Dragster Challenge (I got a Wally!) and secured a spot in the "Race of Champions" at Div. Finals in September.
Best $200.00 I've ever spent on my car.
October 18, 2007
I can't tell you how Happy I am with this car, your FBO Ignition and the ETS carb upgrade. As you know we added a Runner Up to the Track Champion Trophy, the Cash Bash Win at Division 6 Finals (Big $$$$) and Rookie of the Year Honors at the banquet. Thanks to you and the whole FBO Crew for flawless parts and solid coaching, it made my Rookie Year one I'll never forget.
If I had of left the 10.06 on the car like you told me I have no doubt I'd have won the Race of Champions and I'd be getting ready for Pomona...never try and out smart the man.
The car ran a 10.069 on the 10.04 dial and I lost by .016 jus wouldn't run the 04 like I thought, again you were right.....but I'm still a Happy loser.
541-942-5920
www.4secondsflat.com
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