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Originally Posted by drewclare25
anybody here put a new cam in a disco??
how much of a pain is it? i heard it can be done wihout taking the motor out.
and how hard is it to get the timing right after you put it in, simple as any vehicle with a timing light? i know rovers are usually more difficult thats why i'm asking.
i'm looking at putting a cam from a 4.6 into my 4.0 i know it will fit, but does anybody have any idea how much power i'd gain?
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Drew, timing a cam has nothing to do with a timing light, the timing light is used to set the Ignition timing.
To time your camshaft you will need to know where the timing marks are on the crankshaft timing chain sprocket (small one at the bottom) and on the Camshaft sprocket (big one at the top) and what position they need to be in to sychronise the valves in the head with the position of the pistons. You will need a Workshop Manual for your model or similar, which will show you the orientation of the sprockets when number 1 piston is at Top Dead Centre (TDC). Some aftermarket camshafts come with indexed keyways in the crankshaft sprocket so as you can Advance or Retard the Cam timing in relation to the crankshaft timing, usually these Cams come with full instructions, once you have the Camshaft timed to the crankshaft you can then set the ignition timing with a timing light, refer to your W/shop manual on how to replace the Distributor so when the #1 piston is at TDC when you slide the Dist. in the rotor button should be pointing to #1 on the Dissy cap.
I know I have written this rather simply as I don't know how much knowledge you have in this matter, I hope I haven't offended you, if you know more than I thought, because of your statement about the Timing Light, good luck, Regards Frank.
