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Post by granty on Jan 17, 2017 22:31:31 GMT 1
Peeps -- was thinking that the special might be needing new rings -- couple of techie questions
1. How do I know if I need new rings or a re-bore?
2. How do I know what size of rings to get if it's just the rings?
Cheers G
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Post by NorryC on Jan 17, 2017 22:37:58 GMT 1
Take the barrel off the piston, check the rings are free to move around and no gummed up and the recess is clear, line up rings , compress and insert piston into barrel if a tight fit they should be fine if to easy the rings are done. If standard barrel should be easy to source if not a micrometer could measure more accuratly
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Post by NorryC on Jan 17, 2017 22:40:14 GMT 1
If pistons nd rings look shagged just replace , maybe get the baeeel honed as they can go smooth or glazed which reduces friction , Rab McKay does barrel honing
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Post by psychedelicropcircle on Jan 17, 2017 23:01:49 GMT 1
Rings off piston place in the barrel check with feeler gauge 0.30mm is ideal anything above 0.70 You should replace. You'll know how many mile you've done ?
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Post by granty on Jan 18, 2017 9:20:31 GMT 1
Cheers Boys -- not sure how many miles the rings have done -- I've done a good 10k since I got the engine replaced -- not sure how many miles it done before I got it -- I think the feeler gauge might be the ticket.
If I do need new rings how do I know what size? do I just micrometre the piston diameter?
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Post by skin on Jan 19, 2017 0:13:47 GMT 1
U sure granty didnt think u have had injun that long ?
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Post by granty on Jan 19, 2017 15:35:34 GMT 1
aye, pal -- I think I've done 3 seasons worth on it, maybe just 2 now I think of it & I get close to 3k a year, the issue might be how many clicks it done before I got it -- the compression is poor, struggles to start hot BUT runs well ??
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Post by skin on Jan 19, 2017 21:09:45 GMT 1
Ah right a just thot u. Hadnt had it long when a bought the auld injun from u ...... sounds like a worn topend right enuff
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Post by granty on Feb 20, 2017 17:10:48 GMT 1
Anyone have a loan of a vern gauge I could get a loan of the next couple of weeks?
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Post by psychedelicropcircle on Feb 20, 2017 22:03:08 GMT 1
Anyone have a loan of a vern gauge I could get a loan of the next couple of weeks? p To measure yer boaby? I have a pair you can borrow although the £20 ones out of Aldi work fine & a handy tool outwit have boaby measuring  |
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Post by granty on Feb 21, 2017 13:32:35 GMT 1
Perfecto -- I didnae realise there were that cheapo -- I'll just get one for boaby measuring then -- G
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