Author Topic: Anybody here run a Jr. fuel car?  (Read 20392 times)

Offline Blind Mule

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Anybody here run a Jr. fuel car?
« on: February 14, 2013, 12:46:13 PM »
I will never afford it but I like that class kinda like Comp Eliminator big bucks but great racing ;D Are there any Ford engines in this class or is it a spec engine class? Is there a wheelbase limit also?

Randy!
« Last Edit: February 14, 2013, 12:49:57 PM by Blind Mule »

Offline wideopen231

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Re: Anybody here run a Jr. fuel car?
« Reply #1 on: February 14, 2013, 06:48:05 PM »
sure they let you run ford.They need money donators. Most are sbc,few hemis from what Ive seen.I think its 410 ci or less.STACK INJECTORS. 225" wheel base max. And from tthe numbers I see on SWJFA.com lots of money. Scott parks went 6.77@197 last year with 383 sbc.I think frabk said the car weighed 1350 raceready.

   Theres a reason its mostly sbc.Not many engine will take the rpm they are turning to make small cube motor run like the top cars are.Lots of lite weight parts also. Check swjfa.com lots of pics and cool fed's.
Relecting obama is like shooting right foot because it did not hurt enough when you shot left foot

Offline Cajuninjector

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Re: Anybody here run a Jr. fuel car?
« Reply #2 on: February 14, 2013, 07:44:29 PM »
Here are the rules for the Southwest jr fuel assosiation. Hope this answers your questions.
Rules Committee Members:

Mike Buchanan, Jay Briggs & Ron Muncy

Designation:

- B/JF Preceded by car #
- B/JF: 3.65 pounds per cubic inch, 1,375 pound minimum weight. Limited to OEM cast-iron Hemi, 23 degree Chevy (no raised runner) OEM or aftermarket replacement style, OEM Ford or aftermarket replacement style heads. Other makes fall under same category as above. + or - 3 degrees maximum allowance for milling of heads.

Electrical:

Batteries - If there is a battery on the car to start the car, battery disconnect switch is mandatory.

Delay Boxes and or Related Devices - PROHIBITED
(See NHRA General Regulations 8.2, 8.8)

Ignition - Single magneto or single coil ignition only. (Magneto limited to 20 amp)

Cylinder Heads:

Effective 01-01-2013
Cylinder heads limited to" traditional porting", - no cutting and relocating of cylinder head material.
* HEAD BOLTS- are to be in original (oem) locations, and of traditional lengths and factory diameters
* LIFTER BORES and CAMSHAFT LOBES: must be in "traditional location as to oem specs".

Engine:

- One internal - combustion, reciprocating, and OEM type engine permitted. Cast iron block mandatory. Maximum 410 cubic inches. No collector style headers allowed. Dry sumps and evacuation systems permitted. Gen. Regulations 1:2

Timing / Retard Devices:

Timing retard or advance devices of any kind form or function are PROHIBITED. MUST BE A FIXED TIMING from start to finish of race.

Exhaust System:

- Zoomies Only

Fuel:

- Methanol mandatory. All other fuels or performance enhancing additives prohibited. Gen. Reg. 1:6 NHRA

Fuel Systems:

- Injectors will be individual stack style, no scoops of any kind permitted. Cast manifolds ONLY, down nozzles PROHIBITED. ONLY ONE nozzle per cylinder allowed. No others of any kind for any reason allowed!
Nozzles must installed in intake "not cylinder head"No external modifications to manifold that alter or change "as cast shape or size." Modifications limited to "porting of intake runners." Use the intake as it was cast. Trying to keep expensive and exotic machine work out of the picture. Ex: cutting, welding, etc.
- A fuel shut off operable from drivers seat required
- Maximum of one fuel pump only
- Round butterfly only, maximum diameter is 2.875 inches as measured across the throttle butterfly shaft. No rotary style injectors allowed.
- Effective as of Jan 2008: A properly fitting, SFI Spec 7.1, 7.2 or NHRA accepted Lower Engine Retention Device is REQUIRED. Dragsters may use a belly pan in lieu of a device attached to the engine. Belly pan must extend from frame rail to frame rail, and extend forward of harmonic balancer and rearward of flywheel, and must incorporate a minimum 2-inch high lip on ALL sides.

Drive Train:

- Driveline - A full cover must enclose the driveline if universal joints are used. Cover material must be minimum of .063 steel or .125 inch aluminum. Gen. Reg. 2:4.
- Rear End - Aftermarket axles and axle retention device mandatory. Spool permitted. Gen. Reg. 2:2, 2:11.
- Transmission - Limited to automotive production, automatic transmission with a torque converter, maximum two forward speed "gears." Full shift pattern mandatory. Mechanical or electrical lock up converters prohibited. Transmission brake permitted. Electric transbrake release system only. Maximum one transmission brake solenoid permitted. Automatic transmissions flex plate meeting SFI Spec 29.1 mandatory. OEM transmission cases "with proper shields," aftermarket replica case, permitted.
- Pneumatic, electric, or other non-OEM automatic shifters prohibited. Gen. Reg. 2:14
- Transmission shield meeting SFI Spec 4.1 mandatory. Automatic transmission flex plate shield meeting SFI Spec 30.1 mandatory. Gen. Reg. 2:14
- Any electronic/electric or pneumatic controlling of shifting process of any kind prohibited. All shifting functions must be a physical/manual function of the driver.

Brakes & Parachutes:

Brakes - All cars must be equipped with two rear wheel disc brakes, and a functional mounted parachute.
Tire Size - Maximum rear tire size is 12 inches as measured across tread surface. Maximum wheel width is also 12 inches.

Safety Equipment:

- Driver / Head Restraint System Mandatory as required by NHRA.
- Helmet and Protective Clothing: Minimum Snell SA 2000 helmet as required by NHRA.
- A SFI Spec 3.2a/15 full fire suit (1 or 2 piece) allowed as required by NHRA.
- All suits to include the following: neck collar SFI Spec 3.3 mandatory, boots or shoes 3.3/5 as required by NHRA mandatory, gloves 3.3/5, and adequate face protection meeting all proper NHRA Specs and requirements. A head sock or skirted helmet required if transmission is located in driver's compartment.
- Arm restraints mandatory
- Valid NHRA competition license mandatory
- Any car with no cross member above drivers legs must have strap or device to prevent legs from projecting outside the chassis.
- Three inch driver restraint system meeting SFI Spec 16.1 mandatory. Restraint system must be updated in two year intervals from date of manufacture.

Fire Control System:

- Fire extinguishing system must meet SFI Spec 17.1. Minimum 5-pound, NHRA accepted fire extinguishing system mandatory. System must be divided with one nozzle on driver's cockpit and one nozzle on engine.

Misc:

- Computers/Data Recorders: May gather data information only, and may not tie to any device that controls specific functions of the car. Ex: shifter/shift solenoids or trans break wiring.
- Warm Ups: Car must be on jackstands and in your specific pit area with someone in the driver's seat when/while the engine is running. No Exceptions
- Taillight: One functioning taillight mandatory.
- Tow Vehicles: As permitted by NHRA or individual tracks.
- Steering: A device must be used to prevent long steering shaft from injuring a driver in case of front impact. If removable steering wheel is used, a commercially available quick release steering wheel adapter meeting SFI Spec 42.1 is mandatory. Gen. Reg. 3:3
- Suspension: Any front suspension using a beam or tube axle must have radius rods attached to frame. Radius rods not mandatory on front axles rigidly mounted 18 inches or less form king pins.
- Wheelie bars are permitted and must be non-metallic.
- Ballast is permitted and must be permanently attached (bolted)
- Ground Clearance: Minimum of 3 inches from front of car (nose included) to 12 inches behind centerline of front axle. 2 inches for remainder of car, except oil pan and/or transmission pan.
- Pinion Support: Mandatory
- Roll Cage / Chassis: Mandatory. Chassis must be inspected every three years by NHRA and have serialized sticker affixed to frame before participation. Chassis must conform to SFI Specs for E.T. car is capable of running. Proper roll cage padding also required by NHRA.
Go Hard or Go Home

Offline Blind Mule

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Re: Anybody here run a Jr. fuel car?
« Reply #3 on: February 14, 2013, 07:59:54 PM »
Wow 1350 lbs.  How would they crank without a battery?  Looks like all Glides or Very high$$$$$trans ??? I think some of the comp cars run the metric trans and I think at one time Rampy had a Chrysler trans might have been when he had the Mopar motor :-\

   Randy!

Offline rooman

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Re: Anybody here run a Jr. fuel car?
« Reply #4 on: February 15, 2013, 04:13:19 AM »
Wow 1350 lbs.  How would they crank without a battery?  Looks like all Glides or Very high$$$$$trans ??? I think some of the comp cars run the metric trans and I think at one time Rampy had a Chrysler trans might have been when he had the Mopar motor :-\

   Randy!

The have a battery pack on the golf cart/tow vehicle and plug it in to fire the motor. Rampy ran a 904 torqueflite based  trans in his altered behind the small block Chevy.

Roo
Yeah, I am from the south--any further south and I would have been a bloody penguin.

Offline Cajuninjector

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Re: Anybody here run a Jr. fuel car?
« Reply #5 on: February 15, 2013, 10:25:00 AM »
Two small Deka 12v batteries wired together to make 24v. Small and pretty light. Parks sells the little box they sit in and it has a handle to carry it around. Turns the motor over fast for efficient starts. Haven't burnt up a starter yet.
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Offline masracingtd1167

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Re: Anybody here run a Jr. fuel car?
« Reply #6 on: February 15, 2013, 11:05:58 AM »
Were you junior fuel guy's able to make a deal with Goodyear for the 12x31 tires ? Iread one of your guy's posts on inside comp .

Offline hotrod316

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Re: Anybody here run a Jr. fuel car?
« Reply #7 on: February 15, 2013, 01:08:28 PM »
  Just a crew dog (a) car 7.14 185MPH,  396,  shift at 10,000 with a rotary intake, sold the car,  change the convertor from 8200 to 9200 when 6.99 first pass or WAS IT our drive was lifting lol BIG BIG BIG MONEY!!!!!!!!!!   

Offline Cajuninjector

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Re: Anybody here run a Jr. fuel car?
« Reply #8 on: February 15, 2013, 07:01:29 PM »
Were you junior fuel guy's able to make a deal with Goodyear for the 12x31 tires ? Iread one of your guy's posts on inside comp .
We did get goodyear to agree to make 160+ tires. Good thing too cuz we're running our last years set to start off the season and have no spares. The 31x12 (D2585) is 8 pounds lighter than any other jr fuel legal tire out there.
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Offline slingshot383

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Re: Anybody here run a Jr. fuel car?
« Reply #9 on: February 16, 2013, 01:42:04 PM »
Cranks that weigh 36 pounds, modified Honda connecting rods, ceramic bearings on the front spindles, and lots of other tricks make Frank and Scott at tough pair to beat!
Undercover 23T Altered, big block Mopar
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Offline coupemerc

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Re: Anybody here run a Jr. fuel car?
« Reply #10 on: February 17, 2013, 05:20:22 AM »
I've been collecting parts over the past few years to put a B/ND together. I should have the car out this summer. Frank Parks, Scott Parks and Brian Darcy have helped me out tremendously. I cannot say enough good things about them. The cars are exactly as described in the above posts...lots of titanium, magnesium, carbon fiber and ceramics. Mine is an SBC and will weigh 1360 wet, with ballast and me in it.

Offline Larry Gocha

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Re: Anybody here run a Jr. fuel car?
« Reply #11 on: February 17, 2013, 07:17:05 AM »
This is a great thread I quit driving in 99 but I still want to stay up on what works just in case I hit the lotto.

Offline Greenskeeper

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Re: Anybody here run a Jr. fuel car?
« Reply #12 on: February 23, 2013, 07:27:41 AM »
Tom Frye from OH used to run a FORD motor in Jr/Alcohol
NITROMETHANE IS KING

Offline masracingtd1167

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Re: Anybody here run a Jr. fuel car?
« Reply #13 on: February 23, 2013, 11:21:23 AM »
Iheard a rumor that a certain chassis builder from Kansas is building a Hemi !

Offline Quartermiler

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Re: Anybody here run a Jr. fuel car?
« Reply #14 on: February 23, 2013, 01:30:30 PM »
Heard that also, the Hemi car that we run against now (Ron Ussery) runs 7.18 ets.