Broken Rocker Arm Question?

[bimmer_E30]

Hey,

So i got a broken Rocker arm on my M20 (Cylinder number 6)....it's all fixed and got the valve adjusted too.


But since i only got the broken rocker arm replaced not all of them, could this problem happen again?


what causes this problem to happen anyway? Weak Head?

[jlevie]

While some folks claim that operation at the high end of the rpm band causes rocker arm failure, I've also seen them fail on automatic street cars that never see the upper end of the rpm band. Accordingly my theory is that the arms fail from repetitive shock loading that results from a lack of timely valve adjustments perhaps aggravated by worn valve guides.

[StereoInstaller1]

Caused entirely by lunar cycles, nothing short of witchcraft will fix them permanently

[bimmer_E30]

oh i see.


Well i told them to throw a new: timing belt, Tensioner, Spark plugs+wires also put my stock airbox back.

I can see the Reliability walking it's way to me finally Lol.

[blocke]

oh i see.


Well i told them to throw a new: timing belt, Tensioner, Spark plugs+wires also put my stock airbox back.

I can see the Reliability walking it's way to me finally Lol.

What about a water pump and seals while they are in there?

[bimmer_E30]

If water pump fails i don't care Lol. i could replace that my self.

Seals, i don't see leaks anywhere! :)

[StereoInstaller1]

Seals, i don't see leaks anywhere! :)

PM me when you need my witch's phone number

[nando]

While some folks claim that operation at the high end of the rpm band causes rocker arm failure, I've also seen them fail on automatic street cars that never see the upper end of the rpm band. Accordingly my theory is that the arms fail from repetitive shock loading that results from a lack of timely valve adjustments perhaps aggravated by worn valve guides.

that, and fatigue of the metal, and soft valve springs leading to float.

[Slangbox]

Wait you can replace the waterpump yourself but not the timing belt? Please do explain

[bimmer_E30]

Wait you can replace the waterpump yourself but not the timing belt? Please do explain

No this shit again.

:weak:

[Slangbox]

No this shit again.

:weak:

What?? What am I missing?

[MR 325]

If water pump fails i don't care Lol. i could replace that my self.

Seals, i don't see leaks anywhere! :)

You do know you have to pull the timing belt to change the water pump, correct?

[nando]

You do know you have to pull the timing belt to change the water pump, correct?

no you don't ;)

[SpecM]

no you don't ;)

not technicly, but it makes it easier

and you might as well ;)

[StereoInstaller1]

Hmmm GRAF water pump was $60 or so. Timing belt kit was $35 or so, add a few bux for a couple of seals, get on with it.