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  #11  
Old 18th October 2018
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Be sure that you insist on .003” running clearance between cylinder and piston, if they try to suggest something tighter. My guy way back said he set the clearance to .0015, and everyone here agreed that was way too tight. You don’t want to stick a piston after it’s all put back together.
Awesome. I've been looking for that info.

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  #12  
Old 18th October 2018
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1st piston. I slid th pin out with my thumb after I PBed it.

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  #13  
Old 18th October 2018
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2nd piston. Same with this pin as well. The brown on them is really old oil. I can take it off with my fingers.

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  #14  
Old 18th October 2018
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that is a very interesting pair of oil rings. never seen them like that, i wonder if they are factory?
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  #15  
Old 18th October 2018
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that is a very interesting pair of oil rings. never seen them like that, i wonder if they are factory?
I'd say they are really. There's like 3 or 4 parts.

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  #16  
Old 18th October 2018
The Doctor71 The Doctor71 is offline
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Those oil rings look like original factory 2 piece oil rings..... or at least they appear similar to what came installed on my '71 & '74.

IMHO, they are garbage..... I'd trash them at your first opportunity.

Replace 'em with a newer 3 piece oil ring..... from Hastings, for example.
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  #17  
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Those oil rings look like original factory 2 piece oil rings..... or at least they appear similar to what came installed on my '71 & '74.

IMHO, they are garbage..... I'd trash them at your first opportunity.

Replace 'em with a newer 3 piece oil ring..... from Hastings, for example.
Yeah like I said ar the beginning I planned on getting rid of the rings. I wasn't going to keep them what so u think about the pistons? Thanks for the heads up on the ring company.

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  #18  
Old 18th October 2018
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+2 for hastings rings. those pistons are probably ok to put back in service, especially if your funds are tight.
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+2 for hastings rings. those pistons are probably ok to put back in service, especially if your funds are tight.
Lol yeah there a little tight. It's my birthday this week & in Ohio u have to get tags for Vehicles but this year I have to get a new license as well. So 1 car, 1 truck, the bike & a new license. It's not going to be cheap. I Didn't think she would be down & out.found a site that had a set of std pistons I think.

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  #20  
Old 18th October 2018
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You guys make me smile some days, and that's not a dig!

Let's get this moving. BMI karts has brand new 900 cylinders for $50 a pair, gasket sets for $10. I just had a couple of sets delivered last Thursday.

Standard cast pistons with rings and clips are circa $100 from many vendors.

Oil rings are stock, these are called ladder rings. They work, but you will pass much more oil.

Check your rods for twist, the wear pattern is odd.
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