sorry it took so long to reply guys, anyway im ordering the parts now, and im gonna start on taking off the head.. a little worried but i think i can do it. and the PO hit it everytime he drove it... and then i hit it everytime i drove it untill this happened
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1986 325es
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I just found a broken rocker arm in my car as well...
I was worried about having more failures and glad you pointed out the valve adjustment point as I had not adjusted mine since I bought it 27k miles ago.
I did some quick math and figured a rough estimate of cycles of the valvetrain.
Assuming average speed of ~60 mph and ~3000rpm that equates to 3000 revolution/mile.
With a head at say a low 100k miles that equated to
3000*100,000*2 roations of the head for every rotation of the crank = 600,000,000 or a cycle life of 600 million just for the broken rocker. This could be way off if the rockers were never changed and could easily be closer to over a billion cycles. Looking at it that way is actually really impressive numbers for a rocker built 25 years ago...
318iS Track Rat :nice: www.drive4corners.com
'86 325iX 3.1 Stroker Turbo '86 S38B36 325
No one makes this car anymore. The government won't allow them, normal people won't buy them. So it's up to us: the freaks, the weirdos, the informed. To buy them, to appreciate them, and most importantly, to drive them.Comment
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you have it backwards, it's 1 rotation of the head for every 2 of the crank.Comment
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