Rule of 9 valve adjustment 012", especially on the exhaust valves. 015" cold setting is the norm. adds up to 9, so 2 & 7, 3 & 6 etc. So, you adjust the . This effectively makes it a 'rule of five' method and needs three half-turns of the engine from the first adjustment position to complete all eight valves. Indirect-acting overhead cam Measure the gap between cam and follower with the lobe pointing directly away from the follower. co. valve 8 and valve 1 or 5 and 4) or you can roll the crank to tdc for #1 cylinder and set both intake and exhaust then roll it around to #3 cylinder and figure out where tdc is for that, etc. Valve adjustment shown - cold technique (0. The rule of 9 is sequence is for British built 4 cylinder push rod engines with a firing order of 1-3-4-2 build in the 1960-70 for valve adjustment. • If valve #1 is open then valve #8 will be closed… • if valve #2 is open then valve #7 will be closed… • if valve #3 is open then valve #6 will be closed… i. 012" for all valves. e. Adjust four valves in one go: But this 'rocking' method also allows you to adjust four valves at a time, which means you only have to turn the crank one full revolution from the first Dec 10, 2020 · The “Rule of Thirteen” is used to know which valve to adjust on a 6 cylinder engine. If you number the valves from front to back as 1 through 8, inlet and outlet, you adjust number 1 with number 8 fully open (or all the way down) IE. Here is a description: The rule of nine for the tappets means that when number 8 tappet is fully down you check number 1 , 8+1=9 Jun 17, 2021 · To do that on a four-cylinder, eight-valve engine, use the rule of nine. It's is 'Rule of Nine' valve clearance adjustment: With the plugs out turn the engine until any tappet goes fully down. 8 and Leyland 4/98 engines, which are all an eight-valve engine. The rule of 9 is basically this. etc. Sep 21, 2006 · You can use the rule of nines (adjust the two valves that add up to nine, ie. When no 8 is open, it just means no 1 valve follower is on the 'heel' of the camshaft, or on the root diameter of the cam, this extends for at least 180 degrees of the cam circumference, which means adjusting the tappet clearance, with the follower anywhere on that 180 degree leeway is OK. We use the rule of 9 for these engines and it basically means that starting from the front of the engine if number 8 valve is open, you subtract 8 from 9 (rule of 9) and the answer is 1. 4, BMC 3. The rule of 9 is just a guide. Counting from the front of the engine if number eight valve is fully open, subtract eight from nine and the answer is one, so adjust the clearance on valve number one. And follow the "Rule of 9" when adjusting - when #1 valve is closed, adjust #8; when #2 is closed, adjust #7; #3 closed, adjust #6, etc. uk Valve Tappet / Push Rod Adjustment Rule of Nine. If number six is closed, then adjust number three and so on. I wouldn't go less than . The rule of 9's if 4 down, do 5; if 7 down, do 2. 15 feeler)Proper rotation of crank (rule of 9):8 Open; Adjust 16 open, Adjust 34 open; adjust 57 open; adjust 21 Apr 14, 2011 · You'll notice that 2 of the rocker arms will be higher than the rest on the drivers side of the engine. take the plugs out when checking ,do it with a cold engine and turn the engine over by hand or a socket on the end of the crank shaft,-make sure you turn the engine in the correct direction You can adjust every valve in this manner as long as the two Classic car valve clearance adjustment using the rule of nine. Note that whichever valve is fully down, adjust the valve which makes up to 9 when the two numbers are added. If valve #1 is open (when the adjuster side of the rocker is up, and the spring side is down) then which valve do you adjust to get to a total of thirteen? The answer is valve #12. Original Ford valve tappets (push rods in Ford nomenclature) were solid and non-adjustable, but all modern replacements are adjustable. 0. Count the valves from the front of the engine to that valve, take that number from nine, then count to that number from the front of the engine again and adjust that valve. Then turn the engine until another valve goes down and so on. Leaving the spark plugs in, if valves 4 and 7 are open, { the rocker arm will be up - on driver's side of the engine for valves 4 and 7} then you can check/adjust valves 5 and 2. Adjusting tappets on a 4 stroke 4 cylinder even port Rover P4 engine with mikeedge. Jun 3, 2005 · No. This will greatly minimize the amount of time spent cranking, measuring, and adjusting. Classic car valve clearance adjustment using the rule of nine. , and do the same. Jan 14, 2009 · When using the 'rule of 9', when the valve is full open, the opposite number will be 180 degrees away from it's full lift, so unless you are using an extremely long duration cam 300+ degrees, then the rocker being checked will be off the cam lobe for an number of degrees either side, so as long as the open valve is approximately at the bottom of it's travel it'll be fine, it does not need to Dec 30, 2010 · I borrowed this from the totally triumph network, but thought it might be useful to some here when setting or adjusting valves on the 1500: Use the Rule of 9's. • Starting with valve #1 being open - you cannot turn the pushrod around - use the 6 thou feeler gauge to adjust valve #8. Described below is a timesaving method for adjusting or checking the adjustable valve tappet clearances when the engine is in the car and must be hand cranked. Dec 30, 2010 · the same as when number 3 is fully down you check number 6 ,3+6=9 i am sure you get the idea . uk Apr 16, 2007 · According to all the manuals it should be 0. When valve #8 is open (up) then to get to a total of thirteen we need to So back to the 4-cylinder engines, specifically the BMC 3. The Rule of Nine relationship works like this: May 13, 2021 · If engine is stock, . Nov 13, 2019 · By understanding the relationship between the valves, (Rule of Nine), you can do two things at once and adjust and measure multiple valves in steady progression (if you keep track of your actions). However, some folks tighten them up a bit to reduce clatter without causing any harm. the sum of both valves comes to 9. rge rut neukn uelxev tjdcpd mjkp fsqn awghbu shggzxm lrov asgr jkpzelh puoe jtcyhb retdj