1979-1993 & 94 Conv [Subscribe to Daily Digest] |
Okay all you motorheads.... 9000 owner here checking with all you knowledgeable 900ers about a rebuild matter.
Soon I will be elbow deep in 92 2.3 non-turbo engine bits, repairing the aftermath of the snapped timing chain. As per the usual, the pistons smashed into the valves, only in this case a piece of valve guide actually lodged itself in the crown of the number four piston. That means that guy's gotta go.
However, the shop that removed the head assured me there's been NO scoring of the cylinder wall, fortunately. This raises my question:
When I get in there and see the inevitably pristine cylinder walls, complete with factory crosshatches, would there be any need to hone the cylinder? Other than a light touchup with the hone to ensure a good surface for the new rings, I don't want to get involved in any honing/boring unless it's absolutely necessary. And what if I look in there and see very, very light scoremarks? As long as I give it a good crosshatch, why wouldn't the motor be fine?
This is an everyday car, not a museum piece, and I want to get it back together and on the road. I do NOT want to have to take the block to a machine shop for boring/honing, etc. etc.
I'd like a good explanation as to the ups and downs of honing from anyone who can give one, or the nearest approximation. Is this a scenario in which I'm guaranteed to regret not painstakingly rehoning, or is it acceptable to install a replacement piston in a cylinder with minor scoring? If so, at what point should scoring be considered not minor? What's the consensus?
Thanks in advance!
posted by 63.186.19...
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