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M110 valve adjustment tips?

6044 Views 27 Replies 5 Participants Last post by  nobby
I have read Nobby's valve adjustment writeup and it is my guide.

I have the feeler gauge, the special wrench, the valve cover gasket and the will to do it as an oil change is up.

My question is there anything to look for while the engine is opened up? I want to measure the timing chain stretch, I think you line the engine up to TDC on the crank pulley then you compare the marks on the cam and see how much it is off.

When I turn the motor over is there anything I should do other than

Is there anything to look at? Check the rocker arms or rattle clips for wear?
21 - 28 of 28 Posts
doesn't matter, I guess the spring was OK.
I adjusted one of the intake valves to the spec for an exhaust valve so that is probably what caused all the racket in the engine. I'll button it up and see what happens, thanks for the tips folks!
..............but you will get the most accurate adjustment with a COLD engine. Overnight cold.
Fixed, thanks for all the help folks. My car is happy again!
I have a doubt for some time on...

Allways when I adjusted my M110 valves I read on the manual intake 0,10 mm and exahust 0,25 mm (Cold Engine) and now my fouvorite part warm engine (60º Celsius) intake 0,15 mm and exahust 0,25 mm.

So...hotter engine more valve clearence ? inst supoused to expand and bring the valve lash tighter when the engine warms up ?

So why give some clearence at first if when it warms up It will make his "own" clearence ? Why not give 0,10 on both sides ? I cant understand this manual.

Can someone give me a reasonable explanation for this ???

Tnks !!!
I have a doubt for some time on...

Allways when I adjusted my M110 valves I read on the manual intake 0,10 mm and exahust 0,25 mm (Cold Engine) and now my fouvorite part warm engine (60º Celsius) intake 0,15 mm and exahust 0,25 mm.

So...hotter engine more valve clearence ? inst supoused to expand and bring the valve lash tighter when the engine warms up ?

So why give some clearence at first if when it warms up It will make his "own" clearence ? Why not give 0,10 on both sides ? I cant understand this manual.

Can someone give me a reasonable explanation for this ???

Tnks !!!
I'm surethere must be an explanation ....but the best way to adjust is still on a cold engine.
I'm surethere must be an explanation ....but the best way to adjust is still on a cold engine.
Yes, I know. I allways did my valves whit an overnight cold engine.
I was just curious about the gaps being larger whit a warm engine.

Another thing that keeps me thinking it`s why when I adjust the valves to the correct lash that engine idles like shit and has less vaccum than if I give them 0,05 mm more on each side, by the other hand the engine was more sharp and lively (Like an engine whit a narrow LSA angle)
The only answer I found It´s that for greater lash the valve opens later (more slack to compensate before it begins to open) so each cam "reatards" It`s opening point from each other (giving the engine a more wide LSA angle).

But why wouldnt work whit the original values? Ok, I forgot to mention that this head was resufaced 2 times and the cams position wasn`t cheked (the service manual forces the shop to correct the cam position when they skim the head).
I will have to check the cam timing I gess.

What do you think ???

Cheers.
Yes, I know. I allways did my valves whit an overnight cold engine.
I was just curious about the gaps being larger whit a warm engine.

Another thing that keeps me thinking it`s why when I adjust the valves to the correct lash that engine idles like shit and has less vaccum than if I give them 0,05 mm more on each side, by the other hand the engine was more sharp and lively (Like an engine whit a narrow LSA angle)
The only answer I found It´s that for greater lash the valve opens later (more slack to compensate before it begins to open) so each cam "reatards" It`s opening point from each other (giving the engine a more wide LSA angle).

But why wouldnt work whit the original values? Ok, I forgot to mention that this head was resufaced 2 times and the cams position wasn`t cheked (the service manual forces the shop to correct the cam position when they skim the head).
I will have to check the cam timing I gess.

What do you think ???

Cheers.
I'll be honest and say...........that shit is beyond me.

I'm not so good with the "WHY??"
21 - 28 of 28 Posts
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