bluebob71
Scoot Enthusiast
Posts: 192
Location: mt.pleasant, mi
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Post by bluebob71 on Aug 17, 2019 5:31:29 GMT -5
have a 150cc im working on trying to check the rings and was just wondering how reusable is the metal head gasket? the 1 right after u take the cam and everything off.
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bluebob71
Scoot Enthusiast
Posts: 192
Location: mt.pleasant, mi
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Post by bluebob71 on Aug 17, 2019 5:33:44 GMT -5
normally i wouldnt ask but some one told me the metal 1s were ok to reuse if not like 10k miles on it
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Post by jloi on Aug 17, 2019 11:53:16 GMT -5
I'm not 100% on this but I didn't re use mine , I just stocked up on them when I was doing engine/head/cylinder work . It seems to me ,when you compress them , then they're no good anymore . I have been told different things by different people when I asked the same question and this is the conclusion I came to . For me it's not worth doing all that work - tearing down , putting back together , to risk it being wrong or not running right because of a gasket leaking
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Post by rocketdog on Aug 18, 2019 20:16:42 GMT -5
I wouldn't Blue. It can probably be done, as long as there are no serious issues with it. By that I mean tears and such. But they are dirt cheap. You can probably clean it off with gas, let it dry, and spray a hi temp. cylinder head sealer on it. But why?
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Post by SMALL CC TEK on Aug 18, 2019 20:38:19 GMT -5
Yeah if your in a pinch you can use it as long as you haven't distorted it any . It's not recommended but will work just fine it's not like it's a 13.1 motor or it's water cooled or anything !
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bluebob71
Scoot Enthusiast
Posts: 192
Location: mt.pleasant, mi
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Post by bluebob71 on Aug 20, 2019 6:14:58 GMT -5
now my nxt question is my head has a outline of the old gasket, just like a shade from it idk how to explain is that ok? like ive tried cleaning it its like the metal lol idk how to explain
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Post by jloi on Aug 20, 2019 10:43:29 GMT -5
try a straight edge razor blade and wire brush. carefully ; don't slice it
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Post by crawford on Aug 20, 2019 11:52:29 GMT -5
NOPE endless you like doing it twice a few miles down the road and maybe walking it back or getting trucked back your dissission
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bluebob71
Scoot Enthusiast
Posts: 192
Location: mt.pleasant, mi
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Post by bluebob71 on Aug 22, 2019 11:28:17 GMT -5
try a straight edge razor blade and wire brush. carefully ; don't slice it its not gasket material, its like a outline from the metal gasket |
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Post by jloi on Aug 22, 2019 13:46:26 GMT -5
Oh , my bad. not paying attn. If there's nothing to clean , then ??
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Post by FrankenMech on Aug 22, 2019 17:15:05 GMT -5
The outline is oxidation caused by dissimilar metal corrosion. It is embedded in the metal on an atomic scale. Use a new gasket.
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Post by 3strokeengine on Sept 1, 2019 20:51:02 GMT -5
Ive reused MLS (Multi Layer Steel) headgaskets on my 232cc gy6 that runs 13.4:1 compression on 108 octane race gas and havent had an issue with it.
For a rebuild I would replace it, but you dont HAVE to.
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Post by milly on Sept 4, 2019 2:03:04 GMT -5
The only old head gasket we use to reuse decades ago was the solid copper ones if there was no damage by heating them up cherry red annealing its called. Once red it will be soft and malleable again dunk it in a bucket of water. Do this in ventilated area due to fumes given off when heating
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