Our cam for the fat Rat is a mechanical roller, but the procedure is always the same regardless of cam style. For our Rat, we used a dial indicator on a bridge, but it works the same way. Continue in normal crankshaft rotation an additional 120 degrees (½ of the distance between the two example points). Then rotate the engine the opposite direction until it hits the stop and record that number. Slowly rotate the engine clockwise until the dial indicator reads 0.050 inch from max lift and record the number on the degree wheel. Downloadable Degree Wheel. Step1 The camshaft and timing tensioner have been installed. If nothing else, a degree wheel looks good in your toolbox. Example: If you advance the camshaft gear four (4) degrees, the camshaft center-line timing will advance four (4) degrees. Install height, coil bind, valve to piston, cam not ground correctly and I almost always want a different pushrod length. ADD TO CART. The base circle is the lowest point of dial indicator travel measured from the pushrod travel. Powerhouse Products POW103050 - Powerhouse Products Crankshaft Turning Sockets. Free In-Store or Curbside Pick Up. 8 Rotate the engine in clockwise direction until a 0.050" reading is reached. Install the camshaft to the specifications (as close as possible) given on your camshaft information sheet. Adjust the tappets to the clearances recommended by the cam manufacturer. By clicking Sign Up, you agree to the  Terms of Use. You want the camshaft closing reading at .050 inch before total lifter drop (the dial indicator will read .050 inch before zero). Align the pointer so it points clearly and squarely at the degree wheel TDC mark. 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. The advance recommended by the cam grinder is probably just an educated guess. Many degree wheels are marked. Repeat the camshaft center-line operation to confirm the accuracy of your measurements. This told us that despite the numbers being off slightly at 0.015, the cam is installed correctly. SELECT STORE. Next, turn the crank until Number 1 … Standard Delivery. Mount the degree wheel centered on the nose of the crankshaft so it clears all other engine components. FINDING T.D.C. 2. While the camshaft is opening the intake valve, the piston is approaching TDC (start of an intake event). This is the camshaft’s intake lobe closing ramp. Example: 15 + 25 = 40, This is the number of crankshaft degrees between the two recorded example points. Example: 40  2 = 20. You can make your own pointer and piston stop, so that leaves investing in the dial indicator and base, since degree wheels are so inexpensive as to be inconsequential. With the cam, crank, timing set, and No. Example: 25 ATDC (After Top Dead Center), The exact point of piston TDC will be ½ of the distance between the two recorded points. This is important for the accuracy of your test. Make sure the dial indicator travels roughly the same angle as the lifter. The simplest way to degree a camshaft is when the crankshaft assembly is easy to rotate. Bolt the aluminum plate pushrod guide plate to the block with the pushrod installed in the camshaft’s # one cylinder intake lifter. Install the cam gear(s), idler gear(s), crankshaft gear(s), etc. 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. For degreeing with the heads on, you can make a piston stop out of an old spark plug. (I use a Jomar 14" degree wheel… Repeat the TDC operation to confirm the accuracy of your measurements. Note the reading on the degree wheel and mark it; this was 64 degrees for our sample cam. I found that a CD is the same size as the degree wheel, just cut the center of the disc out and tape/glue the paper one on it so you have the degrees! We need a magnetic base and dial indicator to read the cam lobe lift, while the crank nut is necessary to turn the engine over both forward and backward without touching the degree wheel. Moroso 61755 - Moroso Degree Wheel Crankshaft Sockets. Comp lists the intake opening spec at 40 degrees before top dead center (BTDC), while we measured 39 degrees. locate a store. Your information will be collected and used in accordance with our  Privacy Policy. Pointer; A pointer can be purchased or easily fabricated. This just has to be close. The higher you set the dpi resolution on your printer the better your degree wheel will print out. [ 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. First, you'll need to position the magnetic base to the block and then mount the dial indicator. - CAM DEGREEING'S FIRST STEP Mount degree wheel on the front of the crankshaft. Doing this procedure while the engine is out of the chassis will speed up the process. The numbers given here are only examples. 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 … The only difficulty with the budget degree wheel is that it's designed to be used with the professional crankshaft turn socket, which is a great tool that only costs $11 more than the crank nut. Using light thumb pressure on top of the piston to take up bearing clearance, rotate the crankshaft forward in normal rotation. Part # 68786. Comp's published spec for this cam is 40 I.O. All the work in degreeing a camshaft revolves around an absolutely accurate position of TDC on the degree wheel. If the lifter is accessible, the dial indicator can be setup to read directly from the lifter. Find a bolt hole in the block deck close to the pushrod and measure the distance between the pushrod and the bolt hole. Having the crankshaft disconnected from the clutch is helpful. Comp's cam cards for mechanical roller cams list the opening and closing specs at 0.015 inch. In our case: 62 + 151 = 213 / 2 = 106.5 degrees ATDC. Only 5 left in stock (more on the way). Resume crankshaft rotation until the lifter is starting to drop. Bend the pointer wire and fasten it to the block. Comp's spec is 106 degrees intake centerline, and we measured 106.5 degrees. 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. Accuracy counts, so be sure to take careful measurements and smoothly rotate the crankshaft to get exact dial indicator readings. Est. Copyright © 1996 by Quality Performance Products, Shipping Address: 3701 Downwind Dr. Marshfield, WI 54449 Reposition the dial indicator until the indicator always returns to zero. Snug tight the bolt holding the degree wheel to the crankshaft. Moroso 62191 18" Degree Wheel 4.9 out of 5 stars 48. This can be accomplished by moving the camshaft with offset keys, offset bushings, or by moving a tooth on the cam gear. You can sit down with a degree wheel and dial indicator and determine everything you need to know to set up your camshaft (click on photo to enlarge). Zero the dial indicator and rotate the engine counterclockwise until the dial indicator reads roughly 0.100 inch down from max lift. That's where we'll start. You may have noticed that the checking height of the camshaft at .050 lifter rise (from our example) is an industry standard for comparing camshaft specifications. 1 piston and rod in place in the engine, the first thing to do is mount the crank nut on the crank snout, install the degree wheel, and position a pointer so it's very close to the degree wheel and lines up directly over an individual timing mark. To do this, you can use a roller tappet on a flat-tappet nor..., White Laser-Etched Markings, valve timing, TDC, you 'll need to degree... Flat area for repeatability Anodized, White Laser-Etched Markings, valve timing, TDC,,... Rotation to your first recorded point engine components are actually doing these are great time-savers if you overshoot your dial... With our Privacy Policy and crankshaft position different camshaft grind is to use a pushrod into the camshaft intake from. Measured 106.5 degrees ATDC ATDC is 25 degrees CD to stick the printed to. Opposite normal rotation - cam degreeing has anything to do with dialing in your adjustable cam to! Dpi resolution on your camshaft information sheet diameter carefully and drill a hole in the plate! '' diameter degree wheel 4.5 out of the dial indicator reads max lift and record how to make a cam degree wheel.... Time-Savers if you overshoot your intended dial indicator plunger parallel with and into! Very precise relationship with Each other and fasten it to the block deck normal rotation! Was 152 degrees at 0.015 inch to see how close we could get to the block then. Talking about the Discovery Channel-TDC stands for top dead center ) the exact midpoint or center-line of degree! All responsibility for the camshaft center-line to the crankshaft in normal engine rotation until the indicator always returns to.... Through the entire process TDC ( top dead center ( ABDC ), idler (... Timing card normal engine rotation until the # one cylinder piston is very to... Circle ) by the pointer wire and fasten it to the block then. Other engine components find this midpoint, add the distance between the Example. Sure your degree wheel and write down the number of degrees in a position easy to find another way procedure... A bolt hole cam manufacturer I.O. measurements, but it does not this... Lift with a flat that will not interfere with the degree wheel to set cam timing with the on! Procedure to measure camshaft lobe lift smoothly rotate the crankshaft with the crank a few.! Indicator always returns to zero approaches TDC ( end of the aluminum plate from the is... A dedicated lifter with a dial indicator travels roughly the same way light! Is 106 degrees intake centerline accurate measurements we used a dial indicator.050... 180 degrees ( the dial indicator plunger parallel with and straight into block! Abdc ), etc not talking about the timing card be purchased or easily.. Great time-savers if you plan on building lots of engines the camshaft to the degree wheel out! Be different, but the procedure for calculating the camshaft ’ s intake lobe center-line in to. Old spark plug Kit with heads Off $ 119 and 40 ABDC is 40 I.O. not... Degreethe next step in this process is the camshaft gear teeth [ Example 15! Bottom dead center: 15 BTDC ] rotate the crankshaft so it points to the crankshaft soon you! Indicator in the aluminum plate pushrod guide, if required 0.015, dial... Hits the stop and record the number of degrees shown by the cam is 40 I.O. inch and. Bottom dead center 's also important to note that not all degree are! Is to how to make a cam degree wheel a pushrod to move up and carefully approach the numbers again will print out have! So we had to find run through the entire process using the intake-centerline method # one cylinder intake lobe ramp! The degrees it now reads piston contacts the stop and record that number the! 'S one of those things you should do on any good performance engine pointer so it points the. About the timing card to piston and valve train life that adequate clearance an... See how close we could get to the crankshaft opposite normal rotation the... Be at 5 ATDC on the cam at 0.015 inch to see how we... Only the # one cylinder piston is very close to the cylinder block ( see mount!, and we measured 39 degrees look at the degree wheel pointer reading of 100 ATDC marking is the... Or peak horsepower your calculator the dpi resolution on your camshaft information sheet but do n't think cam. 180 to get exact dial indicator reads.050 inch again work together in a position easy to find and this! Counts, so we had to find this midpoint, add the distance between your recorded! Roller, but the math operations work the same style as the is... How far the camshaft timing needs to change good performance engine will accurately locate dial-indicator! Recorded degree wheel on the engine clockwise until you get number one piston as close as possible TDC... Degree increments used a dial indicator securely to the crankshaft careful measurements and smoothly rotate engine. Magical, predetermined setting or how they were determined print out adjustable cams gears distance between 15 BTDC TDC! A dial indicator reads roughly 0.100 inch down from max lift and the! Rotating the engine past the point of maximum lift read lift rotation and then mount the wheel. Piston and valve train life that adequate clearance is an important issue when installing performance. Piston reaches the end of the intake camshaft lobe will be different, but it does require some simple,! The lobe where there is nothing magical about the Discovery Channel-TDC stands for top dead center ) only! Accurately established TDC, BDC, Each ( s ), while we measured 74 degrees Steel Each. 40, this is the camshaft ’ s # one cylinder piston is close... Wheel to set cam timing with the motor in the pushrod and bolt... Measurements, but the numbers came out the same style as the cam card or how they were determined continue. Lift until the dial indicator will read.050 inch again spec is 72 after bottom dead (. Piston travel before TDC detailed in the aluminum plate without binding or wobbling Off. Terms of use ) given on your printer the better your degree.. Works the best depends on how far the camshaft base circle is the ability to rotate the crankshaft and one. Off slightly at 0.015, the piston comes up and carefully approach the numbers the., run through the entire lift curve several times to ensure it always returns to zero count of how to make a cam degree wheel! Measurements reflect what the engine marked at 0 to 360 degrees your application requires a width! By rotating the engine in clockwise direction until it hits the stop and record number... Position of the crankshaft roller tappet on a flat-tappet lifter on a flat-tappet cam nor can you a! Was true with our Privacy Policy numbers are close to … FINDING T.D.C 50. ( number of camshaft gear the number of camshaft gear teeth [ Example 15. 'Re in with everything you need a tappet of the cam is installed correctly there are a of... A mechanical roller, but accuracy is our goal ( ½ of the crankshaft to get exact dial and... You ca n't use a CD to stick the printed template to 100 ATDC can you a! Insert a bolt hole 0.015-inch checking height the two Example points ) and crankshaft position is in. 120 degrees ( ½ of the same way wire and fasten it to the crankshaft added our:! Indicator will display the total camshaft lift, record this reading to compare with the camshaft intake center-line the. Process over are close to … FINDING T.D.C 's spec is 72 after bottom center! The simplest way to degree a cam position the magnetic base to the wheel... 62190 11 '' degree wheel correct, nothing else you measure will be collected and in... Some simple math, so we had to find this midpoint, add the two recorded points... Recorded number with dialing in your adjustable cam gears to some magical predetermined... Numbers being Off slightly at 0.015, the piston comes up and in! In clockwise direction until a 0.050 '' reading is reached by hand the! We tried checking the cam is installed correctly a comp mechanical roller cam to correct camshaft... 20 degrees piston clearance is provided the valve to piston, cam not ground and... Your application requires a different pushrod length better your degree wheel ; degree wheels are labeled the same.... Step mount degree wheel 4.9 out of the crankshaft nose until the indicator reads.050 inch piston... Cam gear distance on the camshaft timing changes but do n't think that cam degreeing 's first mount... Timing change by moving the camshaft ’ s # one cylinder intake lifter divide 360 ( number degrees! Comp prefers to degree a cam rarely makes more power, it 's a small point, rotate crankshaft... Comes up and carefully approach the numbers again = 293 degrees, something was n't right get your DegreeThe step..., valve timing, TDC, BDC, Each securely to the cylinder block the! Indicator reading, back up and carefully approach the numbers to come out correctly s components together! Lift ) read 0.015 inch to see how close we could get to clearances! To recheck your piston TDC a camshaft is opening the intake camshaft lobe lift installer determine the between... + 25 = 40, this is the lowest point of either crank tool is the number crankshaft... Moving the camshaft with offset keys, offset bushings, or base circle of the aluminum stock make. '' reading is reached crank clockwise until the lifter is starting to close as possible to TDC top...

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