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Cylinder-head shaved? 700 1988

posted by  someone claiming to be Mikael on  Wed May 16 07:36 CST 2001 [RELATED]

Hello Bricksters!

Just a couple of questions I have for You.

If one shave the cylinder-head one millimeter on a B230F, how many degrees will the camshaft then be retarded if one line up everything as it is supposed to be (the timing belt at the proper markings on the crankshaft,camshaft and so on)?

As I understand it the power will move up in the rev scale if the camshaft is retarded, less low-end torque and more high-end torque or how is it?

Next is it then suitable that I buy a adjustable camgear so Ican set the camshaft to proper settings?Advance it the amount of degrees that was retarded because of the milled head?

About the adjustable camgear, it is not the camshaft one actually move/adjust or, because if one do that I guess one also move the timing settings back in the distrubutor and thatīs not wanted I suppose?One must hold the camshaft still I guess and move the crankshaft those little amount of degrees that is necessary to get the right distance in degrees when let say the intake valve will open against the piston when it is on its way up in the cylinder and then tighten the bolts on the camgear?

Lets make a scenario, in my case with the adjustable camgear on the shaved head which is bolted on to the engine block, the timing-belt is on, lined up on correct markings, the camshaft is retarded a couple of degrees cause of the one mm shaving which makes I suppose the valves will open a bit later, then for to get the correct distance between valve opening and piston I just loose the bolts on the camgear and hold the camshaft still while moving the crankshaft (with the belt and camgear of course) the right way until I get the correct distance in degrees between the valve and the piston and then tighten it up?

Hope You can understand what answers I am in need of, I will not do this myself but I want to know how it works although.I will let a Volvo-mechanic do this work but I would be very grateful if someone could straighten this up for me.

Thanks in advance! (Proper finish or)

Mikael

Sweden





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