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Keon Kinch Keon@easternontariomuddragracing.com Rob Schreider
Rob@easternontariomuddragracing.com Don Bertrim Donnie@easternontariomuddragracing.com Gary Spero Gary@easternontariomuddragracing.com Mel Langton Mel@ranchlakepull.com
This free script provided by In plain terms, acceleration is the rate of increase of velocity. The symbol for acceleration is a. To calculate acceleration of an object, we use the following equation: a = Dv / Dt
a=acceleration (m/s2) let's assume 90 Mph, 90Mph which is 40.225 metres per second (assuming this speed at the
200 foot marker) Now acceleration = change in velocity / time so in our case Acceleration =40.225 Metres per Second / 2.3 seconds So in this case we are accelerating at the speed of 17.49 Metres per Second (approx 39.1mph x 2 seconds (m/s2) )
How can this be used to figure out THEORETICAL
POSSIBLE MINIMUM TIME IN 200 ?FEET - Stay Tuned more coming.
.....and the Answer is > No, Horsepower is not real, it is a simple Mathematical formula. Revolutions per minute of a given motor times (x) the measured torque divided by (/) 5252 -5252 is the Universal accepted worldwide constant. (for measuring horsepower)
Horsepower = RPM x Torque
------------------ 5252 -Ok what does this mean? We can measure Torque. Torque is the actual measurable turning force created by a motor. -Torque is NOT exciting, but it is necessary to measure it, in order to give us a Horsepower Number Horsepower IS Exciting. People love to discuss Horsepower, and how much Horsepower their neighbours lawnmower or snowmobile or late 70's muscle car has / had. OK so how do you find out how much Horsepower your motor has? A) Take it to a Dyno (short for Dynomometer) -a torque measuring device. B) Ask your neighbour (he had a smokin' fast chevelle in 1968 Yup he'd know) C) Add up the Sum of the parts' HP Numbers that they advertise when you buy individual aftermarket pieces online + what you think your motor had originally. D) Drive really fast and tell everyone how much HP it "feels" like you have. You guessed it A) is the only correct answer.
Your day at the Dyno will be a LONG one. You will show up early and spend 2- 3 hours getting your motor adapted to turn the torque arm of the Dyno.(fuel system setup, cooling, oil etc...)
Then you will make a 'warm up' pass. This will serve a couple of purposes, 1- check for leaks, sparks, temp spikes and listen for any really unusual sounds (you know the ones that make you nervous). 2- Set the dyno range, basically where does your engine make power (at what RPM) and what level of resistance should it be started at. Now comes the cool part (or not so cool, if you have unrealistic expectations) . You shut the engine off do a manual timing check, do one last valve train check, back on go the valve covers > then fire it up and and your engine is in the hands of the guy you just paid $400.00 - $1000.00 for a Dyno session. He will slowly rev the motor low then apply the load he feels your motor can take - Here is the scary part, he pushes the hand operated throttle down and you watch and wait to see what numbers begin to show up on the screen. Each pass will only take a few seconds, but even the best put together motor will groan and resist and protest before overcoming the torque arm to a certain amount, all while being measured, calculated (yes this is where that cool formula above comes in)
Some variables, you should take the time and effort to test while you are paying out the BIG dollars. Temp> You will be amazed what temperature your engine actually makes Hp at. Valve lash > modified motors can vary wildly on where they like the IN. and EX. valves lash set. anywhere from 18 - 300 IGN. Timing> Don't start too low here and, stay away from the high numbers all together 18 btdc is low, 40 is HIGH. Headers> Bring a couple of different configurations with you, longer, shorter, 1 7/8 or 2 1/2 you won't know till you try. Jetting> If your Dyno guy is set up and experienced you will find the 'right jetting' Fat is NOT safe, it is JUST wrong. Tune to the right jetting on the back and the front barrels and learn your jetting range. Cam Timing> You want your degree wheel and your cam card on hand, unless you know your clearances tread lightly here. Oil> Yup Oil, if you have a good oil pump, thinner oil makes HP -SIMPLE- it moves faster, requires less friction to pull the heat away from the areas it is lubricating, and takes less power to move through the motor MORE HP, for free. Fuel> Bingo.... be realistic about the amount of compression you have, don't bring 114 Octane if you have 88cc Heads, it is a waste of time and money. Av Fuel 100LL will make great horsepower if matched to compression. Octane is simple - the HIGHER the number the SLOWER the burn. Fuel does not explode it expands, creating a force pushing your piston down through it's stroke. (off on a tangent here sorry). If you bring too high an Octane rated fuel you will need more timing and ultimately make more heat and less HP, just to fire a fuel that your EGO not your motor needs. CC your heads and do a static compression test be informed. Vacuum> if you are running a vacuum motor, you can play with your vaccum pump and crank it up a little. I have been at the dyno and personally seen a few extra points on the pump add; 10 -15 and 25 hp, again free hp if you can keep your valve cover gaskets and oil pan gasket from being sucked in and creating a leak.
Hope this helps clear up
some of the misnomers out in HP land, but I bet if you show this article to your neighbour Jethro, he will still tell you
his 1968 chevelle made 800Hp and could burn rubber even better than the Thundercat last fall at Wheels 'a churnin. (yah
right)
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New Promoter Ranch Lake Super Pull - Mud drag Event video from 2009! Video Ranch Lake Facility 2009 STREET STOCK - Subject to change without notification, changes coming
GENERAL
This class is intended for trucks and Jeeps that are primarily street driven, have minimal modifications and are street legal. Engine, frame and body must be of same make. Entry Fee $25 per driver (2 drivers allowed)
BODY
1) Stock steel body (minimal cutting allowed only for tire clearance) 2) Wheel base must be stock for frame and body 3) Firewall cannot be cut, relocated or reshaped 4) Must retain factory floor pan 5) Flatbeds must meet tech approval 6) Must retain stock glass 7) Headlights and taillights required and must be functional 8) Front bumper required 9) Interior cannot be gutted 10) Race seats allowed CHASSIS 1) Full uncut factory frame front to rear 2) Minimum 4 point roll cage required for open top vehicles 3) Suspension must be stock, lift kits allowed 4) No removal of leaf springs 5) Front and rear differentials, transmission and transfer case can be upgraded 6) Trans brakes not allowed 7) Fuel tank, battery and radiator must be in stock location 8) 4 wheel brakes, dual master cylinder required 9) Unaltered DOT tires only ENGINE 1) Motor must pull 17 " of vacuum at 800 RPM's 2) No V8's in mini trucks or mini SUV's (Unless OEM) 3) Motor must be located in stock location 4) No aluminum engine blocks or aluminum heads (Unless OEM) 5) Single gas carb (no Predators, Dominators, no splits, no stretched) 6) OEM fuel injection only 7) Cast aluminum intake only (no tunnel rams or sheet metal intakes) 8) Headers are allowed, mufflers are required and exhaust must extend to behind the drivers seat Vehicles must meet all safety requirements
SUPER STOCK Subject to change without notification, changes coming
GENERAL
This class is intended for trucks and Jeeps that have been slightly modified for competition but still utilize mostly stock components. They need not be street legal, but they should appear streetable. Entry Fee $50 per driver (2 drivers allowed) . Bump ups $25 from Stock.
BODY
1) Stock steel or OEM equivalent fiberglass body. Fender cutting will be permitted for tire and header clearance. Front inner fenderwells may be removed. Tailgate may be removed. Full steel cab, doors and bed must be retained. 2) Body must match wheelbase 3) Firewall may be modified (but not replaced) for engine clearance only (I.e. engine or body swaps) But engine must remain in stock OEM location. 4) Must retain factory floor pan 5) Flatbeds must meet tech approval. Gutting of factory beds not permitted. 6) Windshield and permanent side glass required (lexan or equivalent acceptable) Rear window may be removed for roll cage clearance. 7) Headlights and taillights not required. 8) Bumpers and mirrors not required. 9) Interior cannot be gutted with the exception of the stock seat and headliner - The dash and all other interior trim panels must be retained - carpet / matting optional. 10) Race seat allowed with the addition of a SFI approved 4 point safety harness. A 5 point harness is recommended. 11) Driver must sit in stock location CHASSIS 1) Any unmodified OEM or OEM replacement frame. Must retain two (2) stock cross members (unused brackets and cross members may be removed at the discretion of the builder. 2) 4 point roll cage recommended. 3) Rear suspension must be leaf-spring unless equipped otherwise from the factory. Ladder bar suspension allowed. Front suspension may be leaf-spring, coil & radius, or IFS. Other front suspension styles permitted if OEM for that vehicle. Coil over shocks not permitted. 4) Leaf-spring vehicles must have at least one functional leaf spring at each corner. 5) Any stock front and rear differentials allowed 6) Any stock transfer case allowed 7) Fuel tank and battery may be relocated 8) Radiator must be located in front of motor 9) Transmission modifications and trans brakes allowed (must be shielded) 10) 4 wheel brakes, dual master cylinder required
ENGINE Subject to change without notification, changes coming
1) Any factory style automotive engine. (No aluminum blocks allowed, with the exception of OEM installed aluminum engines). 2) Engine must be located in approximate stock location based on firewall location. 3) Conventional OEM style aluminum heads allowed. 4) Any unmodified single gas carburetor allowed 5) OEM fuel injection only 6) Cast aluminum intake only (no tunnel rams or sheet metal intakes) 7) Vacuum pumps and dry sumps allowed 8) Nitrous, turbos, and superchargers are not permitted (factory installed OEM turbos permitted on diesels). 10) Fuel limited to Gas only. 11) Headers with mufflers allowed. Vehicles must meet all safety requirements.
PRO STOCK Subject to change without notification, changes coming
GENERAL
This class is intended for trucks and Jeeps that have been highly modified for competition. Although these vehicles can be gutted, they must appear stock and must utilize a full factory frame in their chassis. Any engine, frame, body combination allowed. Entry Fee $75 per driver (2 drivers allowed) Super Stock bump up $50.
BODY
1) Stock steel body or OEM equivalent fiberglass body required( No Race Bodies) 2) Gutting of body is allowed. Must retain stock appearance from exterior 3) Wheelbase must match body being used. 4) Flatbeds must meet tech approval 5) Windshield glass not required 6) Headlights and taillights not required 7) Interior can be gutted 8) Driver seat can be relocated in the center of the vehicle, but cannot be moved toward the rear 10) Bumpers not required 11) 5 point harness is required when using racing seats CHASSIS 1) Full uncut factory frame from front differential to rear differential (must retain 2 stock cross members) 2) Minimum 6 point roll cage 3) Any stock type front and rear differential allowed 4) Any style transfer case allowed 5) Fuel cell, radiator, and battery may be relocated 6) Transmission modifications and trans breaks allowed ( Trans must be shielded) 7) 4 wheel brakes, dual master cylinder required ENGINE 1) Any automotive type engine acceptable( no aluminum blocks) 2) Any unmodified single gas carburetor allowed 4) OEM fuel injection only 5) Vacuum pumps and dry sumps allowed 7) No nitrous allowed Vehicles must meet all safety requirements.
PRO MOD DOT Subject to change without notification, changes coming
Entry Fee $75 per driver (2 drivers allowed).
GENERAL
This class is intended for highly modified 4 wheel drive vehicles allowing tube chassis, any engine location and aluminum engine blocks. These vehicles need not resemble any factory produced vehicle. BODY 1) A body is required. It can be constructed from metal, fiberglass or plastic and can be any design 2) A firewall and floorpan must be present protecting driver from engine and driveline components DRIVETRAIN 1) Chassis material, design and workmanship must meet safety requirements and tech approval 2) Rear engine vehicles roll cage must provide adequate protection to driver legs 3) Any type suspension allowed 4) DOT tires only. Vera Trac and similar tires are acceptable on front 5) Dual independent master cylinder brake system required 6) Four independent wheel brakes required 7) Maximum wheelbase 150"
ENGINE
1) Any automotive type engine acceptable (aluminum blocks allowed) 2) Multi Carbs and nitrous allowed (no blowers or turbos) 3) Any safely constructed competition exhaust allowed Vehicle must meet all safety requirements.
PRO MOD CUTS and PADDLES Subject to change without notification, changes coming
Entry Fee $75 per driver (2 drivers allowed)
GENERAL
This class is intended for highly modified 4 wheel drive vehicles allowing tube chassis, any engine location and aluminum engine blocks. These vehicles need not resemble any factory produced vehicle.
BODY
1) A body is required. It can be constructed from metal, fiberglass or plastic and can be any design 2) A firewall and floorpan must be present protecting driver from engine and driveline components DRIVETRAIN 1) Chassis material, design and workmanship must meet safety requirements and tech approval 2) Rear engine vehicles roll cage must provide adequate protection to driver legs 3) Any type suspension allowed 5) Vera Trac and similar tires are acceptable on front 7) Dual independent master cylinder brake system required 8) Four independent wheel brakes required 9) Maximum wheelbase 150" ENGINE 1) Any automotive type engine acceptable (aluminum blocks allowed) 2) Multiple carbs, Injection and Nitrous allowed (no blowers or turbos) 3) Gas or Alcohol only, no nitro methane or similar fuel accelerators 4) Any safely constructed competition exhaust allowed Vehicle must meet all safety requirements.
OPEN CUTS Subject to change without notification, changes coming
Entry Fee $75.
GENERAL
This class is intended for highly modified 4 wheel drive vehicles allowing tube chassis, any engine location, aluminum engine blocks and super chargers. These vehicles need not resemble any factory produced vehicle.
BODY
1) A body is required. It can be constructed from metal, fiberglass or plastic and can be any design 2) A firewall and floorpan must be present protecting driver from engine and driveline components DRIVETRAIN 1) Chassis material, design and workmanship must meet safety requirements and tech approval 2) Rear engine vehicles roll cage must provide adequate protection to driver legs 3) Any type suspension allowed 4) Maximum 46.5" DOT tires with alterations (Cuts) allowed 5) Vera Trac and similar tires are acceptable on front 6) Minimum weight with driver and power adders 2450 big block, 2150 small block. Minimum weight with driver and no power adders 2150 big block, 1850 small block. 7) Dual independent master cylinder brake system required 8) Four independent wheel brakes required 9) Maximum wheelbase 150"
ENGINE
1) Any automotive type engine acceptable (aluminum blocks allowed) 2) Blowers, Turbo Chargers, Injection, Multiple carbs, and Nitrous allowed 3) Gas or Alcohol only, no nitro methane or similar fuel accelerators 4) Any safely constructed competition exhaust allowed 5) Blower restraints and belt shield required. Blower and hat blanket and fuel line shield highly recommended Vehicle must meet all safety requirements.
OPEN PADDLES Subject to change without notification, changes coming
GENERAL
This class is intended for highly modified 4 wheel drive vehicles allowing tube chassis, any engine location, aluminum engine blocks and super chargers. These vehicles need not resemble any factory produced vehicle.
BODY
1) A body is required. It can be constructed from metal, fiberglass or plastic and can be any design 2) A firewall and floorpan must be present protecting driver from engine and driveline components DRIVETRAIN 1) Chassis material, design and workmanship must meet safety requirements and tech approval 2) Rear engine vehicles roll cage must provide adequate protection to driver legs 3) Any type suspension allowed 4) Paddle tires or maximum 46.5" DOT tires with alterations (Cuts) allowed 5) Minimum weight with driver and power adders 2450 big block, 2150 small block. Minimum weight with driver and no power adders 2150 big block, 1850 small block. 6) Dual independent master cylinder brake system required 7) Four independent wheel brakes required 8) Maximum wheelbase 150"
ENGINE
1) Any automotive type engine acceptable (aluminum blocks allowed) 2) Blowers, Turbo Chargers, Injection, Multiple carbs, and Nitrous allowed 3) Gas or Alcohol only, no nitro methane or similar fuel accelerators 4) Any safely constructed competition exhaust allowed 5) Blower restraints and belt shield required. Blower and hat blanket and fuel line shield highly recommended Vehicle must meet all safety requirements.
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