I will be timing my new engine up this weekend. Now I've got a good idea how to do it just wanted to check n see if I am correct so.. * * First attach timing disc, then using either a dial guage or a strip of steel secured across the deck with a bolt in as a positive stop wind the piston up untill it stops on the bolt record how Many degreess on disc then wind forwards untill it does the same, middle point between these is true tdc(add together divide by 2). Then rotate to that number on the disc. Undo the disc and zero it. * * I'm assuming the cam is fully fitted and torqued up at this point.Also do the hydraulic lifters have any impact on this measurement if they have been left in oil as mine has they should be full of oil ?? A friend of mine who does drag racing in a big way says you have to get an old tappet and open it up and put a bolt or shim or weld in there to stop any deflection it might have is this true ? Anyway dial guage on the head (steel strip on the head) measuring off the top of the tappet rotate the cam untill full lift at the middle of the dwell point as best as possible. Stick the belt on and tighten it up, then rotate the crank untill just before full lift on inlet one say 0.1 mm for example then record the number on the timing disc then rotate crank other way untill the same 0.1mm on dial appears and record timing disc number. Add together divide by two give you middle point wich is true full lift, adjust using the vernier pulley to get timing figure in my case 110 degrees at full lift on the inlet . * * *Is this all correct ? Main questions are is there a standard advance I need to add to my 110 degrees of 5 degrees or am I thinking of ignition advance ? And hydraulic lifters if soaked in oil prior do they affect maxiuim lift measurements ? Please correct me on any bits I've got wrong or any hints or tips would be ideal thanks*
