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Can you tell the oil change wasn't done frequently, the cam is very worn also.
Major Contributor
'89 525i M20 broken timing belt (PICS)
Customer with a broken timing belt, see pictures below, the piston #3 hits the exhaust valve pretty bad, bending it (along with two other ones).
With the impact the cylinder head got damaged. What are the chances that the bottom end (connecting rods...) is damaged???
I am putting 2300 Cdn or so of work into the car, and I don't want to have to replace the engine afterwards...
'85 Euro 635csi Race Turbo, megasquirt, Group A
'92 525i Touring 5 speed, 3.46 diff, UUC 8.5lb flywheel, soon to be turbo.
'02 Subaru WRX Wagon with STI springs, bigger sway bars
Major Contributor
More pictures of the engine
Can you tell the oil change wasn't done frequently, the cam is very worn also.
'85 Euro 635csi Race Turbo, megasquirt, Group A
'92 525i Touring 5 speed, 3.46 diff, UUC 8.5lb flywheel, soon to be turbo.
'02 Subaru WRX Wagon with STI springs, bigger sway bars
5-10 Grand Master
it's luck of the draw on if it will pop a rocker tower when the rubber band snaps, i did one last month that bent all 6 exhaust valves and 2 intake and the head was buildable
all america wants is cold beer warm cat and a place to take a poop with a door on it
Major Contributor
Considering that the piston has been hit.... Should I change the engine? Or just the head???Originally Posted by winfred
How strong the BMW engine is to withtand a hit like that???
Thanks.
'85 Euro 635csi Race Turbo, megasquirt, Group A
'92 525i Touring 5 speed, 3.46 diff, UUC 8.5lb flywheel, soon to be turbo.
'02 Subaru WRX Wagon with STI springs, bigger sway bars
5-10 Grand Master
if it just nicked the tops of the pistons they will be fine, just clean up any burrs with a small file, the only thing that really kills a piston is when a valve breaks off and pulverizes a piston
all america wants is cold beer warm cat and a place to take a poop with a door on it
Major Contributor
Big thanks, I called my engine builder... and he told me that maybe I should drop the pan and change the main bearings... But cheap customer don't want to spend lot's of money... the usual.
'85 Euro 635csi Race Turbo, megasquirt, Group A
'92 525i Touring 5 speed, 3.46 diff, UUC 8.5lb flywheel, soon to be turbo.
'02 Subaru WRX Wagon with STI springs, bigger sway bars
Green Beret Special Ops
I would offer the customer the option of pulling the pistons that hit bad and having them checked for cracks, thats the only way to make sure. If they opt out of that tell them that you cant guarantee the long term.
95 E34 530I V2.37
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Those who make peaceful revolution impossible will make violent revolution inevitable.
John F. Kennedy
Major Contributor
How come the book shows only 5.6 hrs for headgasket job???
This seems very low considering that you have a lot of cleanup to do on these old engines.
'85 Euro 635csi Race Turbo, megasquirt, Group A
'92 525i Touring 5 speed, 3.46 diff, UUC 8.5lb flywheel, soon to be turbo.
'02 Subaru WRX Wagon with STI springs, bigger sway bars
5-10 Grand Master
5.6 i can whip the hell outta that if everybody leaves me alone and the customer didnt **** it up by trying to work on it
all america wants is cold beer warm cat and a place to take a poop with a door on it
Big, Big Time Poster
That sounds like my engine (except for the belt snap). My headgasket went, we ended up replacing all valves, rocker arms, seals, guides, cam reground. I attribute this largely to the prev owner driving the car on short trips (never got to operating temp) and only changing the oil when the service light popped on. The amount of carbon build up was staggering even with only 108K miles on the car.
Parts came to 1800 or so and 23 hours of labor. (Did the waterpump, cap and rotor, radiator, belts and hoses while i was at it.)
5.6 is likely just a straight gasket swap with nothing else.
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