So long story short the French got a little payback on the German's. :lol:
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Dave.0 Helix & RMW PoweredLifetime Supporter
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Joker New Member
Heres more, in the suceeding picture is the chain guide , the yellow markers shows where it cracked.
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Joker New Member
More pictures
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Joker New Member
Another angle
You can see how the piston is chippedAttached Files:
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Metalman Well-Known MemberLifetime Supporter
- Sep 29, 2009
- 7,688
- Ex-Owner (Retired) of a custom metal fab company.
- Ratings:
- +7,960 / 1 / -0
What was the cause? Carbon buildup on the pistons or "Death Rattle"....
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GokartPilot Well-Known Member
Thats got to hurt, I hope MINI helps you out with this.
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Joker New Member
Non turbo rated material
The piston that BMW put on the r55 cooper s is the same piston material they use on the M3. Light weight precise and works well with N/A. Using it on a SC or turbo engine was a mistake. The culprit was the heat produced by the turbo. Do you guys remember the water injector for the old turbo system? After continuous boost the top of the piston glows and to cool it down BMW uses oil which is sprayed from the bottom of the bore and this piston literally melted , the rings were fused to the piston. From what i know there is a class action suit against BMW . I dont know if this had something to do with the casette breaking up. The car was running and the symptom at first was a random misfire and random smoke till it got worse with aconstant misfire on 4 , loss of compression and continuos blue smoke. The death rattle is cuased by the chain guide casette getting thinner until the tensioner can not compensate any more rendering the chain loose and slapping on the timing cover. I strongly suggest to owners if you have a stock casette on your mcs , replace it.
Thats how loose the chain was before i rebuilt the engineAttached Files:
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Crashton Club Coordinator
Not sure I understand melting pistons. The top of that piston does not look melted. Is the oil jet plugged that was supposed to cool that piston? The ring lands look snapped off not melted off to me. How do the other 3 pistons look? Just trying to get a handle on this.
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Joker New Member
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Joker New Member
Here you can see rings purple and yellow fused to the piston .
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Joker New Member
Sad to say i have another r55. Clubman s coming in later , customer complains of sudden lose of power, misfire and blue smoke.
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Joker New Member
There is enough evolution put into this motor. The vanos is amazing more simpler than its big bro the n52 but more effective
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Joker New Member
The r55 is here
Next r55 is just arrivec and how ironic same color, s e symptom -
Joker New Member
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Joker New Member
Here she is now
At $11500 newly rebuilt engine , new cp 78 mm pistons, new conn rod bearings, new impeller shaft bearing , new impeller 3 blade, intake port and polish , rebuilt with pride , yes still proud of BMW, and guaranteed when you stick your hand in any part of the engine compartment it will come out clean, no grease gunk oil , every part, screw , bolt was polished. The person that would buy this is lucky .Attached Files:
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Joker New Member
The guy i used to work with at a local dealership here told me that the vanos will shriek for about 4-7secs and its completely normal because its a dry start and vanos is empty. Didnt hear anything except for dry lifters.
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Joker New Member
Initial dry start. No shriek ? Has anyone heard that supposedly dry start mandatory 4 sec shriek. Im just curious on how it sounds