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Engine Rebuild - lower end bearings

posted by  Will740turbo on  Fri Aug 14 15:09 CST 2020
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last visit: Wed Oct 22 16:09 CST 2014
[RELATED]

I did not understand this at first, but it makes sense now.

Machine shop says:
+ Crank and rod bearings can stay standard size, just polished the crank.

+ Bores are a little egg-shaped 3-5 thousandths and tolerance is 4 thousandths according to the manual, but 2.5 according to him (I might be reading it wrong).

- Recommending overbore and new pistons 10 thousandths over, but the boring is 200 and oversize pistons (with rings) are another 200 in parts. Kind of pricey. I know the turbobricks guys would say it's fine, but ... I mean, I *can* afford it for now, but I don't want to spend gobs of money on it if it doesn't need it. I never heard any piston slap at all from this engine ever. I may make a new post about this.






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