Rocker Arm and Cam belt broken

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ricky1329
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Post Fri Apr 15, 2016 8:48 am

Found one rocker arm broken; cam belt broken after open the valve cover.
Found 1,3,5,6 exhaust valve damage after removal the cylinder head.
Piston surface seem still OK, just little scratch mark from value.

Did I really need a new rebuilt engine or just rebuilt cylinder head is good enough?

I want post photos but don't know how to make it

Looking forward comments.

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Last edited by ricky1329 on Sat Apr 16, 2016 3:38 am, edited 1 time in total.
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Speedtouch
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Post Fri Apr 15, 2016 9:12 am

Sounds like new/refurbished cylinder head is required - or rebuild your old one. What engine is it?
///M aurice
ECU Upgrade EPROM Chips, £40 posted within the UK. Note these are not Zone chips.
viewtopic.php?f=6&t=279421
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ricky1329
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Post Fri Apr 15, 2016 9:16 am

Speedtouch wrote:Sounds like new/refurbished cylinder head is required - or rebuild your old one. What engine is it?
M20b25
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Speedtouch
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Post Fri Apr 15, 2016 9:45 pm

Yes, in that case, as above. Hopefully, your old head should be repairable, but in the meantime it would probably be easier/quicker/cheaper to source another head from here/E-bay/breakers yard, etc.
///M aurice
ECU Upgrade EPROM Chips, £40 posted within the UK. Note these are not Zone chips.
viewtopic.php?f=6&t=279421
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ricky1329
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Post Sat Apr 16, 2016 4:06 am

Thanks comments and attached some pics FYI.
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reggid
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Post Sat Apr 16, 2016 4:45 am

hopefully any valves that touched the pistons didnt pinch a ring
E30 325is with M20B31
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ricky1329
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Post Sat Apr 16, 2016 6:30 am

I try to rotate the crankshaft and found the pistons up and down smoothly.
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Yeti
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Post Sun Apr 17, 2016 9:08 pm

as long as the bottom end rotates mate you will be fine, take the head to a specailist and they will check the head i.e cracks , pressure test it and change the valves that are needed dude :D
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