Notifications

Clear all

Pro 4 Rules. Who would wanna run this class next season?

Guest · 2007-09-12T20:34:01Z

I edited the BSW Pure stock rules a bit to more of a Pro 4 style, Let me know what you like or what could be changed. Yes its long too. I would also like to know how many people would like to run this class...seriously not just maybe.2008 Pro Stock 4 Division Rules (Possible)1. BODY STYLEOpen to 4-cylinder cars, engines no larger than 2500cc. Cars may be front or rear wheel drive. No mid or rear engine cars. Must have a stock wheelbase as factory listed for that model/year. Racecars must be complete and presentable in appearance at the beginning of each race. No convertibles or open roofs allowed. All holes to be covered with minimum 20 gauge steel.2. BODY APPEARANCEBody must be stock appearing. All chrome moldings, ornaments, door handles, glass or plastic components must be removed except grille, windshield and stock dash. Original rear wheel arches must be retained. Inner trunk panels, hood panels and roof panels must remain stock. (NO GUTTING) No aluminum body panels. Inner door panels may be removed. Tin Spoiler may be used maximum 5". If door skins or fenders are replaced with body they must be stock appearing. Racecars participating in racing events must be presentable in appearance at all times. Cars that are considered improperly prepared may be rejected by the Technical Committee at any event. Racecars must be complete at the beginning of each event. Any cars considered unsafe to driver, competitors, staff or fans will be rejected and not allowed on track. Cars may not be shortened or lengthened in any way.4. BRAKESfour-wheel hydraulic brakes in good working condition are compulsory and are subject to test and inspection. Pedal must be in original position. Four wheel disc brakes are allowed. Drilled and Slotted rotors are allowed.5. BUMPERSBumpers are required. They must be secure and are subject to test. Bumpers must be welded and chained to prevent bumpers from falling off onto the race surface and creating a hazardous condition during a race meet. Homemade bumpers are subject to approval and must be covered with stock bumper covers or aftermarket plastic bumper covers. Ends must be turned in. Sharp edges must be removed or covered. Bumpers must be present and secure at the start of each hear or feature. All cars must be equipped with chains or cables, front and rear, strong enough to be lifted by a tow truck for towing purposes. These must be attached to the chassis and not the bumpers.6. CARBURETION/FUEL INJECTIONCarburetors are open to any 1bbl or 2bbl setup, or factory dual 1bbls. Throttle must have two return springs. May use open element filter.Ram air tubes are allowed, or cold air box. No turbos, blowers or NOS. Fuel injected cars must have a kill switch, marked in red, which shuts off power to the fuel pump. Fuel injected cars must also have a relay, which shuts off power to the fuel pump on low oil pressure or loss of ignition. 7. CHASSIS & SUSPENSIONSSuspension Open, aftermarket struts,shocks,springs allowed.. No devices to raise or lower cars. Adjustable sway bars allowed. Frame must be minumum 4" ride height.Camber is open in Right front and Left front wheels. No rear camber. 8. DOORSMust be welded or bolted securely. Doors may be cut down.9. DRIVELINEMust have steel 360 degree retaining hoop 1/4” by 2” positioned at front and rear of the drive shaft within 6” of each U-joint. (Rear wheel drive only). No chains. Drive shafts must be painted white.10. ENGINEMust be stock for make, model and year. Maximum engine size is 2500cc. No rotary or multi-cam motors allowed. Maximum 3 valves per cylinder. Cams are open to any Lift or Duration. Intake manifold may be port matched and polished, exhaust manifold may be port matched. Maximum overbore .040”. Engine mounts may be made solid. Engines without safety mounts must have a safety chain mounted from engine to frame in case an engine mount breaks.11. EXHAUSTMust exit under floor and behind driver and exit out right or left side of car. Maximum 2 1/2” O.D. pipes. Single exhaust only. Mufflers are mandatory.12. FIRE CONTROLCars must have an approved fire extinguisher mounted in an approved mounting bracket and within driver’s reach with seat belt fastened. Fire extinguisher must have gauge and if the extinguisher is older than three years it must have a recharge slip dated within one year. SFI approved firesuit is mandatory. Stock hood and trunk latches must be removed and replaced with quick entry holddowns.13. FIREWALLS & FLOOROriginal front and rear firewalls must be retained. Floors may be tinned. All holes must be covered with minimum 22 gauge sheet metal either welded or riveted in place. No metal screw allowed.14. FRAMEOn Uni-body cars, front and rear frame sections may be joined for added strength. No X frame supports.15. FUELCars may use street legal unleaded pump gas with no additives allowed or you may use the racing fuel available from Barrie Speedway with no additives allowed. Cars may be disqualified if they ar...

Page 19 / 27 Prev Next

Last Post

RSS

Posts: 1498

Thunder6

Sep 18, 2007 12:31 am

(@thunder6)

Noble Member

Joined: 19 years ago

Just about everything gets destroyed by the TQ Can Ams, they run 12 point whatever on our track... And when I checked into it you could buy one for about 9 or 10 grand. I like the Mod 4 idea, and maybe it would be a travelling series with Barrie as the home track... Sunset is the home track for Ontario Pro Challenge cars, and Flammy is the home track for Canadian Vintage Modifieds... CVM runs a lot of their sched at Flamboro.

But again this is up to the guys who want to run the cars, not me. I've got enough on my plate with Thunder Cars right now.

"Dont be BEECH! And as always comrades, have nice day" fpsrussia

Posts: 1498

Thunder6

Sep 18, 2007 12:34 am

(@thunder6)

Noble Member

Joined: 19 years ago

Even if the Barrie and Flamboro guys could get together that would work great too.

"Dont be BEECH! And as always comrades, have nice day" fpsrussia

Posts: 0

Tooner

Sep 18, 2007 2:15 pm

(@Tooner)

Joined: 1 second ago

I would love to get into one of those cars. CSC says they can make the cage and I'm sure they could fabricate the chassis with a little more info. The rules are simple and not very time consuming for the tech official either by the look of it. They are also working on a crate engine idea as well. May just build one myself just for the hell of it and run with them here and there.

Posts: 0

ministock19

Sep 18, 2007 7:33 pm

(@ministock19)

Joined: 1 second ago

What are the chances of adapting an 8 cylinder open wheel modified to a 4 cylinder mod 4?There are plenty of available chassis available in this area.

Posts: 0

tricknology

Sep 20, 2007 9:58 am

(@tricknology)

Joined: 1 second ago

In Michigan we have run 4 cyl FWD cars for a few years,
see this CRO topic

http://www.canadianracingonline.com/smf/index.php?topic=6723.0

Spartan Speedway in lansing michigan has been running 4 cyl fwd cars the longest, and has the most equitable rules.

They even up the competiton between the 2 valve per cylinder cars and the 4 valve per cylinder cars in very simple, low cost, and easy to tech ways,

2 valve cars have are allowed a bigger engine ( 2.5 L) and a bigger EXHAUST outlet ( 2 in OD), and weigh less( 100lbs)

4 valve cars (Neons) have a Smaller engine ( 2.0 l) and a smaller exhaust outlet ( 1.5 in OD ) and weigh 100 lbs more.

PLUS all cars have to use NARROW street tires.

http://spartanspeedway.com/Info/rules2007/2007Rules19.php

also,,,

At Auto city speedway in Flint they copied Spartan speedways rules ,but also allowed mustangs,,,

It worked great,,,a boy and girl tied for first place season champs,, the boy had a rwd mustang and the girl had a FWD automatic trans 16 valve dodge Neon.

Keep your rules Stock and only allow narrow street tires,,,and only allow a 1 1/2 inch outlet for the exhaust system on all 16 valve cars.

A very restricted exhaust rule works! it is Cheap , Easy to tech, makes cheater parts like big cams less effective,and it automatically limits maximum rpm's.

DO NOT ALLOW HEADERS!!! only allow Stock exhaust manifolds!! with a single SMALL outlet pipe.

see topic,,,

http://spartanspeedway.com/forum/viewtopic.php?t=234

Page 19 / 27 Prev Next

Forum Statistics

95 Forums

25.6 K Topics

91.4 K Posts

10 Online

22 Members

Latest Post: New One Day Saturday Showcase for the Northeast Classic at New Hampshire Motor Speedway Our newest member: racer61 Recent Posts Unread Posts Tags

Forum Icons: Forum contains no unread posts Forum contains unread posts

Topic Icons: Not Replied Replied Active Hot Sticky Unapproved Solved Private Closed