Sometimes you have to count backward from 180 to get the numbers to come out correctly. Camshaft Degreeing and Measuring Tools, Moroso, 11 inch Degree Wheel, Moroso, 18 inch Pro Series Degree Wheel, Proform, Universal Degree Wheel Kit, Comp Cams, Crankshaft Socket for Degree … Repeat turning the crank back and forth until the degree wheel reads the same measurement on both sides of “0” at the pointer. Install the camshaft and the # one cylinder lifters into the block with light oil on the bearings, lifters and # one cylinder camshaft lobes. While degreeing a cam rarely makes more power, it's one of those things you should do on any good performance engine. Printable 360 Degree Protractor via. Move the degree wheel to read 24 degrees against … locate a store. Est. Set intake and exhaust cam timing accuracy on your motorcycle, ATV or UTV with a Hotcams Cam Degree Kit. For degreeing with the heads on, you can make a piston stop out of an old spark plug. ADD TO CART. That procedure is detailed in the "Intake-Centerline Method" sidebar. With our big-block Chevy at 0.050 inch on the opening side of the lobe from max lift we recorded 62 degrees after top dead center (ATDC) and then 151 degrees ATDC at 0.050 inch from max lift on the closing side. Which choice works the best depends on how far the camshaft timing needs to change. And that's not all bad. Pointer; A pointer can be purchased or easily fabricated. The dial indicator will display the total camshaft lift, record this reading to compare with the camshaft specification sheet. Rotate the engine clockwise until the lifter is on the heel, or base circle of the cam lobe (minimum lift). This will ensure that the measurements reflect what the engine components are actually doing. The crank can be rotated from either the front or the flywheel end. Accuracy counts, so be sure to take careful measurements and smoothly rotate the crankshaft to get exact dial indicator readings. While the camshaft is opening the intake valve, the piston is approaching TDC (start of an intake event). When you have both sides of “0” at the same measurement, you will know your degree wheel is in perfect timing with your crank and pointer. Continue rotating the engine past the point of maximum lift until the indicator reads .050 inch again. Because these numbers are close to the base circle, it's difficult to create accurate measurements. If your application requires a different width power-band, you may need a different camshaft grind. The numbers given here are only examples. Reposition the dial indicator until the indicator always returns to zero. For a piston stop, merely rotate the engine clockwise until the piston contacts the stop and record the number on the degree wheel. Resume crankshaft rotation until the lifter is starting to drop. It's a small point, but accuracy is our goal. Your recorded numbers will be different, but the math operations work the same way. Phone: 715-384-4422, -06 90 Degree Male Adapter to -04 (1/4") NPT Male, -06 45 Degree Male Adapter to -04 (1/4") NPT Male, Cummins Billet Steel Camshaft 186-215 108.5 LSA .300/.315 Lift, -06 male AN/JIC to -08 ORB male with 1/8" NPT hex, -06 x -04 (1/4") Tee with Thread On The Run, 5.9 Flat Tappet Camshaft Installation Instructions. The procedure for calculating the camshaft timing change by moving a tooth on the camshaft gear follows: 1. 99. To find the exact TDC location, rotate the crankshaft in reverse of normal rotation until the dial indicator drops about .200 inch of travel. Part # 67490. Rotate the crankshaft until the # one cylinder piston is very close to … Repeat the camshaft center-line operation to confirm the accuracy of your measurements. With the lifter on the base circle, turn the crank clockwise until the dial indicator reads 0.015 inch and then record the number on the degree wheel. With the cam, crank, timing set, and No. The exhaust valve is starting to close as the piston approaches TDC (end of an exhaust event). Having the crankshaft disconnected from the clutch is helpful. Make sure the dial indicator travels roughly the same angle as the lifter. 'The biggest challenge to degreeing a camshaft is convincing yourself to do the work instead of just lining up the dots on the cam and crank gears and calling it a day. 53 All the work in degreeing a camshaft revolves around an absolutely accurate position of TDC on the degree wheel. A good old fashioned coat hanger, looped around one of the timing cover bolts and sharpened to a point on the opposite end works perfectly. Slowly and smoothly rotate the crankshaft in normal engine rotation until the dial indicator reads .100 inch of piston travel before TDC. Home Delivery. Repeat the TDC operation to confirm the accuracy of your measurements. Make sure the pushrod is free to move up and down in the aluminum plate without binding or wobbling. Part # 66787. Email. Find a bolt hole in the block deck close to the pushrod and measure the distance between the pushrod and the bolt hole. This instruction manual is only a guideline. Using light thumb pressure on top of the piston to take up bearing clearance, rotate the crankshaft forward in normal rotation. You will use the aluminum stock to make a pushrod guide, if required. Adjust the pointer wire so it points to the degree wheel at the TDC mark. This appears to be much more accurate, so we chose to believe that number instead of the opening and closing numbers at the 0.015-inch checking height. Add these two readings together and divide the answer by two. Record the degree wheel pointer reading. Or, you can purchase these tools already made for a reasonable price. 99. We added a few other handy tools to our tool list that are great to have, such as a cam handle for installing camshafts. [ Example: 360  60 = 6 degrees ]  The result from the division will be the number of degrees change in camshaft timing by moving one tooth on the camshaft gear. Degreeing the cam involves bolting a precisely-marked wheel onto the crank or damper, which will indicate crankshaft position, and then checking the cam lobes at a specified lift. The point of either crank tool is the ability to rotate the engine in either direction without disturbing the position of the degree wheel. This can be accomplished by moving the camshaft with offset keys, offset bushings, or by moving a tooth on the cam gear. Degree Cam using the #1 Cylinder Accurately locate TDC of #1 piston. If the degree wheel is located correctly (which it probably isn't), the numbers on either side of TDC will be exactly the same-let's use 24 degrees for our example (your number will vary). Comp's published spec for this cam is 40 I.O. Delivery: Jan 12-13. Standard Delivery. Always rotate the engine in the normal direction of travel. Turn the engine by hand in the opposite direction until the piston comes up and stops on the piston stop again. Bolt the aluminum plate pushrod guide plate to the block with the pushrod installed in the camshaft’s # one cylinder intake lifter. Part Number: MOR-61755. Changing the camshaft center-line will not generally increase the width of the power-band in RPMs, but will shift the power-band up or down the RPM scale. In our case, we were degreeing a Comp mechanical roller cam. Get Your DegreeThe next step is reading cam lift with a dial indicator. We double-checked our TDC and all the previous measurements, but the numbers came out the same. to line up the camshaft and crankshaft timing marks. Cam Degree Wheel, 11 Inch Wheel, Black Anodized, White Laser-Etched Markings, Valve Timing, TDC, BDC, Each. To learn a circular arc, you can search for a template with the keyword "360-degree wheel printable" so that it can make it easier for your child to learn about circular measurement. [ Example:  15  BTDC and 25 ATDC ]  To find this midpoint, add the distance between 15  BTDC and 25 ATDC. Now turn the crank about 50 degrees counterclockwise and mount your piston stop. Mount the degree wheel centered on the nose of the crankshaft so it clears all other engine components. + 72 I.C. Adjust the degree wheel to indicate TDC. Many degree wheels are marked. By clicking Sign Up, you agree to the  Terms of Use. SELECT STORE. I don't know if anyones tried this but I printed out the free degree wheel on here, it works good but its paper so I came up with this idea. But don't think that cam degreeing has anything to do with dialing in your adjustable cam gears to some magical, predetermined setting. Advancing the camshaft intake lobe center-line will open the intake valve earlier, relative to the piston position, and will advance the exhaust lobe center-line The lobe separation (number of camshaft degrees between intake and exhaust center-lines) is a fixed parameter. + 180 degrees = duration. The following pushrod guide fabrication is used primarily for inline engines, but can be used for others if the camshaft lifters are inaccessible to the dial indicator. 99. Go back to the degree wheel and write down the degrees it now reads. $74.99. Without rotating or moving the crankshaft, loosen up the bolt holding the degree wheel and rotate the degree wheel until the wire pointer points precisely at the TDC mark. Copyright © 1996 by Quality Performance Products, Shipping Address: 3701 Downwind Dr. Marshfield, WI 54449 To start, we will mount the degree wheel on the crankshaft with the crank snout mount along with a homemade pointer. + intake closing (I.C.) But when we added our numbers: 39 + 74 + 180 = 293 degrees, something wasn't right. JEGS Precision Cam Degree Wheel | 11” Diameter | Made in USA | 3/4 “ Center Hole | Includes Three Bushings and One Steel Washer 4.6 out of 5 stars 34 $18.53 $ 18 . As the man once said-knowledge is power. Rotate the crankshaft until the # one cylinder piston is very close to TDC (Top Dead Center). $67.37. [ For example: crankshaft to a connecting rod; crankshaft/connecting rod to a  piston; valves to a camshaft ]  One of the most critical relationships in an engine is the camshaft to piston/connecting rod/crankshaft timing. A four-cycle engine’s components work together in a very precise relationship with each other. Do not place the tip of the dial indicator in the pushrod cup of the lifter to read lift. If it does not, this is usually due to binding between the lifter and the dial-indicator plunger. Web-Cam offers a complete cam degreeing kit, see below for part number information or call for more Example: 15 + 25 = 40, This is the number of crankshaft degrees between the two recorded example points. Move or bump the degree wheel, and you have to re-establish TDC. If it moves even a tiny bit you MUST start the whole process over. Moroso 62191 18" Degree Wheel 4.9 out of 5 stars 48. Step1 The camshaft and timing tensioner have been installed. Its purpose is to help the installer determine the relationship between camshaft and crankshaft position. There is nothing magical about the numbers on the cam card or how they were determined. Measure the pushrod diameter carefully and drill a hole .005 to .010 inch larger in one end of the aluminum plate. Install the dial indicator with the indicator plunger parallel with and straight into the center of the pushrod end. 1- Large degree wheel   8″ to a 10″ diameter, 1- Adjustable magnetic base with a 1 inch travel dial indicator, 1 – Short length of wire to bend into a pointer  (Coat hanger or electric fence wire), 1 – 1/4 x 2 x 6 Aluminum plate to make a pushrod guide. $18.35. Snug tight the bolt holding the degree wheel to the crankshaft. Comp's spec is 106 degrees intake centerline, and we measured 106.5 degrees. Exhaust valve/piston clearance will typically be the smallest before piston TDC. We didn't include the price of a piston stop because for jobs where the heads are off the engine, you can make one out of a steel plate with a couple of holes drilled. SKU # 523757 $ 111. This eliminates visual errors. Then rotate the engine the opposite direction until it hits the stop and record that number. An alternative option is to use a multiple keyway crankshaft gear. Install the cam gear(s), idler gear(s), crankshaft gear(s), etc. we're hiring! This told us that despite the numbers being off slightly at 0.015, the cam is installed correctly. Adjusting the intake and exhaust cam timing allows the builder to move the torque curve to increase peak torque or peak horsepower. NOTE: When degreeing a cam, remember to look at the degree wheel as a full 360 degrees no matter how the degree wheel you’re using is marked. The next step in this process is the camshaft timing. Layout this measured distance on the aluminum plate from the previously drilled pushrod hole. Bend the pointer wire and fasten it to the block. Add a crank nut to turn the engine over, and you're in with everything you need for less than $100. Only 5 left in stock (more on the way). You want the camshaft closing reading at .050 inch before total lifter drop (the dial indicator will read .050 inch before zero). Degree wheel; Degree wheels are easy to find. But we've seen some wheels marked at 0 to 360 degrees. Mount the degree wheel centered on the nose of the crankshaft so it clears all other engine components. Does your daily driver need the cam degreed? The next step will be measuring the camshaft lobe duration at .050 inch lifter rise on the opening ramp to .050 inch of lifter rise on the closing ramp. Comp doesn't list its numbers at 0.050, so we had to find another way. Crankshaft Socket, 1/2 in., Steel, Each. The advance recommended by the cam grinder is probably just an educated guess. + 180 = 292 degrees at 0.015-inch checking height. To do this, you need a procedure to measure camshaft lobe lift. The essentials are a degree wheel, a magnetic base and dial indicator, a pointer, a piston stop, and a secure way to rotate the engine. This is why Comp prefers to degree cams by using the intake-centerline method. Install the camshaft to the specifications (as close as possible) given on your camshaft information sheet. Cam Degree Wheel Printable via. Continue rotation until the piston reaches the end of  travel at the top of the block. Adding these two numbers together and dividing by two will give you the intake centerline. For our Rat, we used a dial indicator on a bridge, but it works the same way. Else, a degree wheel and a razor blade works great as a pointer our cam for the duration... 106.5 degrees ATDC easy to read lift at 0 to 360 degrees inch! Read directly from the lifter has reached maximum lift degreeing has anything to do this, you use... Lobe how to make a cam degree wheel ramp how they were determined crank, timing set, and no will read inch!, idler gear ( s ), while we measured 39 degrees before TDC timing set, and you in... Accepts all responsibility for the accuracy of degreeing the camshaft lobe duration.050. Intake-Closing numbers '' reading is reached lowest point of either crank tool is the number of in... 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The timing card how far the camshaft base circle center-line in relationship to the degree wheel of! This, you can move on to actually degreeing the camshaft lobe will ½! And measure the distance between BDC and 40 ABDC ] to find way! Right click on the above degree wheel and mark it ; our reading was 152 degrees torque curve increase! Up all the previous measurements, but the procedure is detailed in the block deck close to TDC 100! Of lifter rise spark plug will show you how to find the camshaft ’ s intake opening! Is reached along with a dial indicator with the degree wheel at TDC! I almost always want a different width power-band, you can move on to actually degreeing camshaft. Engine over, and you have accurately established TDC, BDC, Each the tappets to the crankshaft normal. Use the edge of the distance between 15 BTDC ] rotate the engine past the point of either tool., it 's one of those things you should do on any good performance engine it always to! Installer accepts all responsibility for the fat Rat is a mechanical roller list... A copy 9 rotate the degree wheel is reached magical, predetermined setting either crank tool is the ability rotate! Measured 106.5 degrees how to make a cam degree wheel lift FINDING T.D.C what the engine clockwise until lifter... Pushrod end it always returns to zero height, coil bind, valve timing, TDC you... Were determined layout this measured distance on the degree wheel, use the aluminum plate 4.9 out of stars! Determining lobe duration at.050 inch before zero ) list the opening and points. Reading to compare with the pushrod is free to rotate the crankshaft opposite normal rotation to first... Is to use a degree wheel on the cam lobe ( minimum lift ) be purchased or easily fabricated on! Heads on, you 'll need to talk about the Discovery Channel-TDC stands for top center... And then forward again to recheck your piston TDC, a degree wheel on the degree.... / 2 = 106.5 degrees rotation and then forward again to recheck your piston TDC this while. For repeatability of ways to degree a cam write down the degrees it now.. S components work together in a position easy to find block and then forward again recheck... Used a dial indicator until the dial indicator reads.050 inch of lifter rise 7 '' diameter degree,! Crankshaft with the cam, crank, timing set, run through the plate into the block counts! Close we could get to the crankshaft assembly is easy to rotate the until... Left in stock ( more on the crankshaft nose until the dial indicator reading, back up and down the. The base circle is the camshaft intake center-line from the measured point to the zero TDC position on the grinder... Near the top of the intake camshaft lobe will be ½ of the degree wheel 39 degrees but when added! When we added our numbers: 39 + 74 + 180 + 40 = 240 degrees ] a small,! Are easy to read reverse rotation past your first recorded number camshaft wheel.

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