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Old 22 February 2011, 05:14   #1
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mariner 135 pistons

looking at a blown engine with impellor failure,
it has been stripped and inspected needs new pistons,so i am told
surely the crank would of bound up also???????
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Old 22 February 2011, 08:56   #2
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Not necessarily. If it was just a cooling failure, pistons would have cooked, but as long as it is rotating, the crank is lubricated by oil......

What may be more of interest is whether it needs a rebore or not. (and do that first before you buy the pistons - if it needs more than about 0.030" chances are you will need bespoke pistons. Mallory do some "XL" (+45 thou' rings a bell?) for certain engines.
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Old 22 February 2011, 10:28   #3
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Originally Posted by 9D280 View Post
Not necessarily. If it was just a cooling failure, pistons would have cooked, but as long as it is rotating, the crank is lubricated by oil......

What may be more of interest is whether it needs a rebore or not. (and do that first before you buy the pistons - if it needs more than about 0.030" chances are you will need bespoke pistons. Mallory do some "XL" (+45 thou' rings a bell?) for certain engines.
cheers for the input
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