crank thrust bearing gone
#1
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crank thrust bearing gone
its a long story but i`ll try and keep it short
basically i found gliiter in my oil so i knew something was up, no knocking though.oh and the oil pressure at warm idle was a bit low - 2 bar
more out of curiosity than anything else ive stripped the block, ..all the bearings seem ok except for the thrust bearing which has serious wear to the sides, right down to the copper. ive checked for end float ,crank seems tight no movement at all.
what idid find to my horror was 0.5 on the bearings so i presume the crank has had a regrind.
what do you think had caused the wear on the thrust bearing, the only thing i can think of is when the crank was ground they didnt grind the sides where the sides of the thrust bearing contacts therefore it would have been very tight fitting, i presume the 0.5 also means the sides of the thrust bearing are also 0.5 thicker.
apart from that the crank is in good nick.
cheers steve
basically i found gliiter in my oil so i knew something was up, no knocking though.oh and the oil pressure at warm idle was a bit low - 2 bar
more out of curiosity than anything else ive stripped the block, ..all the bearings seem ok except for the thrust bearing which has serious wear to the sides, right down to the copper. ive checked for end float ,crank seems tight no movement at all.
what idid find to my horror was 0.5 on the bearings so i presume the crank has had a regrind.
what do you think had caused the wear on the thrust bearing, the only thing i can think of is when the crank was ground they didnt grind the sides where the sides of the thrust bearing contacts therefore it would have been very tight fitting, i presume the 0.5 also means the sides of the thrust bearing are also 0.5 thicker.
apart from that the crank is in good nick.
cheers steve
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some say 2 bar is ok but my old 70k motor was 3 bar, it would have just gone pop sooner or later so i stripped it , it was going to have an 18g fitted so i dont think it would have lasted long
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i think its the centre thrust bearing, looks fcuked.
love nice surprises like seeing 0.5 on the bearings. it was meant to be a rear thrust bearing crank, had once again
yeah see what you mean about the regrind, is that why youre not meant to grind them
love nice surprises like seeing 0.5 on the bearings. it was meant to be a rear thrust bearing crank, had once again
yeah see what you mean about the regrind, is that why youre not meant to grind them
Last edited by stedee; 12 December 2010 at 12:24 AM.
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its part of the problem being a boxer engine.i didnt want to split it, ive learned (kind of)
i bought it as forged and it did have forged pistons plus receipts so i thought it would have had the rest.
i bought it as forged and it did have forged pistons plus receipts so i thought it would have had the rest.
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