how to determine steering box ratio
The new one just spins around the steering box output shaft. So in this example, since there are 54 teeth on the larger gear and 18 teeth on the pinion. CARDONE® Remanufactured Steering Gear Boxes are re-engineered, built and tested to match O.E. DEGREES -----RATIO. This direct bolt-on, remanufactured power steering box replacement has a quick ratio 2-3/4"—three turns lock-to-lock. It will FIT ALL full size cars that take a model "808" Saginaw steering box (which the Riv. To make it clear we give you some important definitions: Tangential force or feed force. Place a degree wheel on the output shaft and turn the input shaft exactly one turn. FORD & MOPAR applications from about '62 to about 1976 as long as the box mounts inside the frame rails & NOT OUTSIDE. Chevelle 87 degree travel divided by 360 times 12.7 ratio = 3.06 turns. The steering wheel travel for one complete rotation =2π x r . •. Quick ratio manual was 4 turns lock to lock (16:1 ratio). NEW 1932-34 Ford 15:1 Steering sector / worm gear set Third, a bad, damaged, or failing gearbox is generally the result of a lack of proper lubrication, reducing smooth movement, and a lack of repairs or service. GM began using Saginaw 800 quick-ratio steering boxes as a sport option on Chevelle, Nova and Camaro models in the middle to late Sixties. I have a steering box that I think is a quick ratio box. Discussions . Standard manual steering ratio was 26:1, almost 6 turns lock-to-lock. But I have a manual trans so I often need to shift at same time I'm steering. Lock to lock turns are now about 2.3 and 2.5 turns on each car. Location: Menlo Park, CA. BMW 2002 and other '02 BMW 2002ti and BMW 1600ti Owners Group BMW 2002 Turbo BMW Neue Klasse Discussion BMW 1600GT Discussion BMW 700 Discussion BMW 2002 and Neue Klasse Events Project Blogs Project Blogs - Archive and the respective mean value determined in each . The cars with 16/13:1 ratios turned . 22.5 -----16.2. If the car had Power Steering, it already had the quick ratio box which received the normal power steering ID tag code. then i bolted a wire to the steering coupler. Your box sounds like the original 1970 power steering box. Pitman Shaft: 1-1/4" Mopar with 32 Splines and 4 Master Splines, 7/8"-14 Thread. That would be. 0° to 5°, 0° to 10°, 0° to 15°, etc.) Live. The difference in travel can make you think that your have a faster ratio than you actually have. Location: Menlo Park, CA. Local Time: 6:40 PM. Give your classic car a modern feel without losing the stock appearance. To measure steering box ratio on a non-variable ratio box: A steering box has 85 degrees in 3 turns of the input shaft, divide the 85 by 3, which equals 28.3 degrees per turn. Steering Box. This is what I have on my 67 Barracuda. There was no difference between the steering boxes on a PS or manual 62-67 Nova. If someone quotes you a stock power box for a 62-67 Nova then it is likely you will not get the correct box. This means that the steering ratio does not react to every little steering wheel wobble and the car does not quickly get off track at high speeds. 16:1 ratio. almost identical to the OEM Jeep box at 17:1. Part No. Greg needed to create a slot in the steering column to match the clamp style attachment of . Fits 1980-1988 Chevrolet El Camino, 1980-1988 Chevrolet Monte Carlo, 1980-1987 Oldsmobile Cutlass, 1982-1986 Pontiac Bonneville, 1980-1987 Pontiac . It doesn't fit! On-center feel was good but required more driver attention. Let's say it's 4 complete turns, stop to stop. Once you know what they fit then the service manuals will tell you additions information like ratio etc. Be the first to review "1932-34 Ford 15:1 ratio steering sector shaft" Cancel reply. Also, take a look at some of our top rated Mechanical Engineering Courses:**. Assuming this is true, a quicker-ratio manual box or r&p may be created by disabling the power steering system. Input Shaft: 11/16"(17MM)-36 Spline. Point the wheels straight ahead used board to mark line on floor, turn wheel one complete turn ( 360* ) make another mark on floor, then measure the angle of the lines on the floor and divide. We need to know how many teeth are in a . 11/05/2009 1:18 AM. A.K.A. Casting numbers from the box won't help you a bit. Forums. Steering Ratio - Effect on how fast the front tires turn. I looked at several websites on steering boxes but didn't see anything on how to determine a quick ratio box from non quick. . This is easy to measure from the outside of the gearbox. In motorcycles, delta tricycles and bicycles, the steering ratio is always 1:1, because the steering wheel is fixed to the front wheel. The steering gear box is the heart of the vehicle's steering system. Count the teeth on the pair of meshing gears. [1] Method 1 Finding the Gear Ratio of a Gear Train Two Gears 1 Start with a two-gear train. Steering Ratio: 14:1 (3.5 Turns Lock-to-Lock). To measure steering box ratio on a non-variable ratio box: A steering box has 85 degrees in 3 turns of the input shaft, divide the 85 by 3, which equals 28.3 degrees per turn. If you get a 76-78 Z28 box (probably same for . If it's there, then your car has variable power steering. Gear Box, Power Steering, 1980-88 G-Body. The 3-hole is the same pattern, just missing one hole and will fit directly into any vehicle that had a 4-hole pattern. steering wheel movement to be 180 degrees the steering ratio can be calculated as S.R =180/25 =7.2 V. RACK TRAVEL Once the steering ratio has been calculated the rack travel needs to be decided. Events Racing FAQ Use; More . Camaro 64 degree travel divided by 360 time 17:1 ratio = 3.02 turns. Is that the F41 box? The ratio of your power steering gearbox will determine how quickly your vehicle reacts to your steering input. Repeat for as many pairs of gears as may be involved in the gear train. Loosen, but do not remove, the nuts on all of the attaching ball joints. The only thing you have to be careful with is getting the steering column clocked back in the right place on the box input shaft. November 29, 2021. Start with a two-gear train. Had to take it out since I couldn't steer the car at low speeds. The Park Avenue takes about a 1/3 of a turn. Research shows the H1 box is also 4 bolt with the 76 cast mark. If not, what is it? Four bolts retain the 800-type cover, while the 605-type unit has a snap ring holding an inset Pitman cover. There's a ratio of 54 to 18 or 3 to 1 this means that pinion is turning . However, we prefer to calculate it in In/lbs. The 16:1 box will be too fast and require too much effort in a nose heavy B body car. Leave the idler arm, steering box, and Pitman arm tightly bolted in place for now. 3.99) portion.To calculate the group of curves a given steering angle range Δδ H must be assumed on, both wheels (e.g. Shocks. The are however some differences in modern and old boxes. When building from the ground up, several factors, such as the length of the pitman's arm and the length of the steering arm, affect the final steering ratio . $468.00. Here is the way to find out your steering box ratio. For example, BMW works with active steering. In this case F 2T = 2 * T 2B / d. Other than 3 or 4 turns, is there some other way to determine the steering box ratio? The question of "why" is based on the fact that I've had sports sedans and sports cars in the past. Forums. Both feature a nut in the center of the cover, which holds the Pitman splined output shaft in place. Return Port: 16mm X 1.5 Flare (Located Closest to Input shaft). Remove all of these using needle nose pliers and side cutters where needed. The 16:1 box will be too fast and require too much effort in a nose heavy B body car. Borgeson 800130 - Muscle Car Series 12.7:1 Ratio Power Steering Box for Camaro. The only identifier was an inked on 2 letter code on the aluminum end cap, and it is usually long gone, washed or worn away. This is the force [in N] needed to deliver the linear movement profile. Fast ration 16:1 was an option from 65-69, but it's very rare, and I particularly doubt it was supplied on big block cars, as it would make the steering effort enormous. Discussions . A 5/8-inch socket is used to mount the steering box. The true steering ratio, as experienced by the driver, would be the dynamic ratio i dyn, this comprises the proportions resulting from steering Δδ H and the elastic Δδ H,e (Fig. This is often spec'd out in torsion bar size. Input shaft seals are actually very easy to replace. Hi, I just got a powersteering box out of a 1980 T/A, at least thats what the guy who sold it to me said it was, the ink stamp is gone, and the casting numbers are all generic, so I used a degree wheel, to determine the ratio, and it seems to be 12.7, I used the method outlined on David's. The steering ratio is actively adjusted in certain car models. 360 degrees divided by 28.3 = 12.7208, which means you have the 12.7 to 1 ratio box. This is what the pinion sees and is simply tangential force * arm (radius pinion) [in Nm]. The steering box houses the gear train which determines the steering ratio. July 2007. Suspension and Steering News . Torque. Rear End Links. The steering ratio is the ratio of the number of degrees of turn of the steering wheel to the number of degrees the wheel (s) turn as a result. Technical specs on the Cardone 27-7595-. If the car had Power Steering, it already had the quick ratio box which received the normal power steering ID tag code. Local Time: 6:40 PM. As soon as it's at the. Borgeson Mopar 800127 technical information. If you do not regularly check the service of the steering box, a grinding noise can creep up. Quick ratio steering box, 3 - 3.5 turns lock to lock ; Standard ratio steering box, 4 - 4.25 turns lock to lock ; Pitman Shaft: 1-1/4" GM with 32 Splines and 4 Master Splines ; Input shaft 3/4"-30 spline ; Pressure port on gear box is 11/16"-18 flare ; The PS included a power cylinder (aka ram) attached to the steering linkage. We can express this basic concept with the formula Gear ratio = T2/T1, where T1 is the number of teeth on the first gear and T2 is the number of teeth on the second. It is my favorite steering box of all the GM boxes if you run large enough front tires to firm up the steering feel. 25 -----14.4 Calculate rack and pinion: important definitions. Easy if you make a few marks before taking it apart. A higher steering ratio means that you have to turn the steering wheel more, to get the wheels turning, but it will be easier to turn the steering wheel. Sitting on the bench I can turn the shaft that the steering column connects to almost 3 turns lock to lock. Sixity Auto Direct stands for value, selection, and quality. This ratio can be expressed as the number of gear teeth divided by the number of pinion teeth. " BIG " by wife, biatch in garage. The steering wheel decided is AIM Formula steering wheel 2 which has a radius of 130 mm. Part of this package was a quicker ratio steering box to reduce steering wheel movement when turning. Remove the old components. The steering valve is what gives you the feel of the road. . Maximum Pressure: 1450 PSI Maximum Operating Pressure, 1100 . This is what I have on my 67 Barracuda. This is the correct way to tell. rotate the steering coupler a perfect revolution or 2 or even 3 if. Remove all of these using needle nose pliers and side cutters where needed. It guides the wheels' movement in conjunction with the direction that the steering wheel is rotated, helping achieve ideal steering response for more efficient driving. This technique also works for sprockets as well as pitch-diameter ratios between belt pulleys. The easiest way to tell an 800-type gearbox from a 605-type box is by the type of Pitman cover on the shaft. Gear Box Identification Guide To properly identify a power steering gear box, use the following identification guide: • Casting number (see catalog) • Number of mounting holes • Input shaft diameter (measure across the splines) • Type of hydraulic port seats (flare or o-ring) • Pitman shaft spline count • Rotation of unit (standard . Tried to install my new rare parts pitman arm for my 383-S Barracuda that has a factory fast ratio steering box. Chevy put out some interchange books years ago, they might have them today also, that will give you the part numbers and what they fit. steering stop, spin the wheel in the opposite direction all. However, the best way to find out is to carry out a test procedure. This relationship is called the gear teeth - pinion teeth ratio or the gear ratio. Dec 17, 2007. It is worn out, but I have a . 20:1 is a good ratio for a B body car. This is the box ratio not the overall ratio listed on the option sheet. In a rack-and-pinion steering system, the steering ratio is determined largely by the diameter of the pinion gear. Mopar gearboxes from 1966-'74 only came in two ratios: The manual steering gearbox was a 24.0:1 ratio with a radius of five and a third turns of the wheel, while the power steering boxes came in 15.7:1 and three and a half turns of the wheel. Suspension and Steering News . The output shaft is connected to the steering rack. Looks like the exact same Ford box on the outside, so for me that was good because it appeared factory original (which is what I wanted). This was accomplished by installing the 16:1 ratio steering box in the car. The steering box includes adapters, so you can use either O-ring or flare-style hose connections. Lock to lock, the factory CJ box is 4.1 turns, the Hummer box is 3.4. Leave the idler arm, steering box, and Pitman arm tightly bolted in place for now. You've either got to know where it came from stock, as in pulled it off yourself, or take the word of the guy selling it.. HotRodRick Save Reply HotRodRick Registered Hop Shock (if equipped) Bumpstops. Borgeson Steering Gear Box for 1975-1986 Chevrolet C10 - Related Components vp. Use the number of turns to verify ratio. Steering ratio is also determined somewhat by the effective length and shape of the teeth on the sector gear. Steering ratio Solve Add to Solver Description The steering ratio is the relationship between how far you turn a steering wheel and how far the actual wheels turn as a result. The Borgeson Saginaw/Delphi 700 Series steering box, which can be ordered from Borgeson ( p/n 800205) or JEGS ( p/n 153-800205 ), is a variable ratio remanufactured steering box that shares the same dimensions as the original steering box. On the input shaft side of the steering box the steering wheel is attached. Redhead in Seattle has direct bolt-in Ford quick-ratio steering boxes that'll drop it to 15-1 at around 3.5 turns lock-to-lock. Lock to lock is less with linkage attached, but a box a bit below 3 turns sounds like a variable ratio box, probably 2.5 turns when links are connected depending on outer steering arm length and pitman arm length. 2. In this short video, we will be understanding the concept called Steering ratio. I have a 20:1 in my car and it's nice when you're off idle and rolling above 5 mph, little input is required to get desired results. Calculate Shipping Ask a Question. Divide one number by the other. Hey all, My 68 Elky has a manual steering box which i am in the process of switching it over to power and am wanting a quick ratio box that's 3 turns or a little less. I prefer the long pitman but with your box either one should work OK. David S seeburg220 Registered Joined Jul 4, 2008 351 Posts 2. Frame Brace (between front bed mounts) When I pull a full ZQ8 setup I rip the bed off because it's either that or the gas tank to get the frame brace out and it also gives me easier access to the rear suspension. Dec 17, 2007. The friction causes metal on metal contact, creating a loud grinding noise . If there is a flat spot on the shaft and some of the splines are missing, count halfway around where there are splines and double that number. H1 has a larger piston for less effort with a faster turning ratio (variable 13 to 16-1 vs 17-1), with 13/16" input splines and metric fittings as original on Scrambler. If it was 3 turns, you'd have 12:1. b. I recommend firm feel if you want to use the original box. Just by "eye balling" the movement of the sector shaft, it appears that it moves about 25 degrees for every lock-to-lock movement of my steering shaft (the box is 4 turns from lock to lock). With the variable ratio, it drives nicer at high speed than the fixed ratio boxes, and yet it turns faster at . It came in both a 3-hole "L" and 4-hole "H" mounting pattern. Free shipping Free shipping . To determine the spline size of a component (rack and pinion, steering column, and steering box), measure the outside diameter and count the number of splines. Loosen, but do not remove, the nuts on all of the attaching ball joints. I had 16* so it came out to 360* / 16* = 22.5 so 22:1 steering roughly. BORGESON Power Steering Box Saginaw 700 12.7:1 Ratio P/N - 800130. A 15/16-inch socket is used on the Pitman arm nut. B-3581-ST. Quick View; View Details. For safety, every nut in the system has a cotter pin. here is how i checked the ratios. The quicker the ratio the harder to turn. OPT FOR PREMIUM STEERING AND GEAR COMPONENTS: Steering and Gear Components need to be as finely tuned as the vehicle they support. The output shaft and frame bolts on old and new are identical and the steering box looks the same externally. Free shipping Free shipping Free shipping. This was accomplished by installing the 16:1 ratio steering box in the car. However, there is a limit to how small the pinion can be made. This is a constant ratio box. To go around a clover leaf I've never had to turn the wheel more than an 1/8th turn or so. Fast ration 16:1 was an option from 65-69, but it's very rare, and I particularly doubt it was supplied on big block cars, as it would make the steering effort enormous. These boxes are also higher effort and provide good road "feel". Check the label for the code NV7. Because the differences between a conventional 16:1 power steering box and a quick-ratio unit all are internal, it may be difficult to determine if a used box is, in fact, a quick-ratio unit. The actual effort it takes to turn the wheel and engage the power assist.