Sophomore Rider
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Post by bigmac on May 1, 2018 11:21:29 GMT -5
I used 15w-40 oil but started using 10w-30 conventional after doing a top end rebuild and then switched to 10w-30 full synthetic after the break-in period for that rebuild. I had a minor oil leak issue with my cylinder head cover even before the rebuild but finally decided to replace the gasket seal that goes around the cover after noticing it leaking more with the lighter oil. Being super duper careful to make sure I got the right part, I removed the seal and held it up to my computer monitor to make sure what I was ordering online looked identical to what I had in my hand and that its description said it was indeed for a gy6 50cc scooter engine. After all that, I get the part and find that it's too big to fit in the groove along the edges of the cover. Here's a picture to show what I'm talking about:  I don't get it. I thought maybe it was for a 150cc gy6 but the seller claims to not even have 150cc cylinder head cover gaskets available. Are there multiple versions of 50cc cylinder head covers? I know there are two types of cylinder heads for the 50cc gy6 and I've had both and used the same cylinder head cover on both. Now I need to figure out if it's worth the trouble to send back this $3.55 part or forget about the lost money and if I should attempt to buy another one from a different seller or just continue using my old seal and just deal with any oil leakage because Chinese scooter parts are too difficult to replace. |
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Post by tortoise on May 1, 2018 12:23:24 GMT -5
I thought maybe it was for a 150cc gy6 but the seller claims to not even have 150cc cylinder head cover gaskets available. Just curious . . who was the vendor? Definitely NOT optimal . . but one option is to cut the O-ring at highest position, overlap ends, and cut a "join-splice" at a 45° angle. |
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Post by pistonguy on May 1, 2018 13:24:23 GMT -5
I thought maybe it was for a 150cc gy6 but the seller claims to not even have 150cc cylinder head cover gaskets available. Just curious . . who was the vendor? Definitely NOT optimal . . but one option is to cut the O-ring at highest position, overlap ends, and cut a "join-splice" at a 45° angle. Yup and a tiny dab of Black ultra Permatex at that splice won't hurt |
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Sophomore Rider
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Post by bigmac on May 1, 2018 19:35:11 GMT -5
The vendor I bought from is 1800coolparts on ebay. www.ebay.com/itm/182197797450When I told the seller of my problem and the possibility that it may have been for a 150cc gy6, I got a reply saying he sells no other seals. I checked the seller's ebay store myself and found no other cylinder head cover seals aside for the one I bought. Who knows what happened. Maybe the seller got a seal for a 150cc gy6 or some other engine in what was suppose to be a shipment of just 50cc seals and I got the mixed up one. I've gotten 150cc parts instead of 50cc parts several times from ebay sellers so it's always the first thing I suspect when something doesn't fit. I had thought about adjusting it by removing the extra length but wasn't sure if it was a good idea but since you guys mentioned it, I think I'll try it. The seller said I could return it, so I'll be fully committed to getting this to work if I try to modify it. |
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Post by chewbaca on May 2, 2018 0:45:32 GMT -5
i don't even bother with the crappie new O rings for the head cover anymore
a little oil resistant silicon on the old squashed ring works very well
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Post by cyborg55 on May 2, 2018 8:40:56 GMT -5
I'd do either,,first choice do the cut and permatex at the highest part of the cover and call it a deal,,,second choice clean both the cover and head and a bead of sealer assemble and again call it a deal
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Sophomore Rider
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Post by bigmac on May 3, 2018 14:43:39 GMT -5
I lucked out with the Permatex. I didn't have any on hand nor wanted to buy a tube of it for this extremely small project. Luckily, a relative of mine bought a tube of Permatex for a car repair and didn't need the rest, which was still about half a tube full, so I got it yesterday while visiting.
I cut the extra length off, put a drop of Permatex on and brought the two ends together. That was done today and the package says to give it 24 hours to cure, so I should be ready to get my scooter back together tomorrow.
If it doesn't seal well, I'll try some of the other suggestions mentioned here.
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Sophomore Rider
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Post by bigmac on Jun 23, 2018 11:29:02 GMT -5
FAIL.
It started leaking oil a few days ago. The rear body panels needs to come off to excess the cylinder head cover and I want to wash it before taking it apart as it's as dirty as a well used dirt bike at this time. It's going to take me about a week to do something about it.
Frustrates me so much how they basically throw some random thing in a package and send it to you as your replacement part.
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Post by toddmaples on Jun 23, 2018 12:40:00 GMT -5
FAIL. It started leaking oil a few days ago. The rear body panels needs to come off to excess the cylinder head cover and I want to wash it before taking it apart as it's as dirty as a well used dirt bike at this time. It's going to take me about a week to do something about it. Frustrates me so much how they basically throw some random thing in a package and send it to you as your replacement part. those seals are meant to "squish" into the groove. It want to big, you just didn't squish it in enough, you probably stretched it out instead of pressing it straight in and working it straight in the entire time.... Option number two is using silicone all the way around. Do not tighten all the way up with the silicone wet as it won't work that way, wait the required time for the permatex to set, then torque to spec. |
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Sophomore Rider
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Post by bigmac on Jun 27, 2018 21:19:39 GMT -5
I'm so glad that gasket did not seal well. I ended up buying another one from a different seller but when I removed the cover to install it, I noticed this:  Had I not taken the cover off and saw that, things could've gone really badly. I don't know how long that crack was there but it couldn't have been too long since it was only about a month ago when I last had the cover off. I'm sure I would've noticed it then unless it was really small and has since grown. The new gasket I got fits perfectly all the way around the groove so it's defiantly the right part. I swear the part I got on my first order wasn't even made for this bike. But now I need a rocker arm / camshaft holder before I can confirm the leak is gone. |
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Post by tortoise on Jun 27, 2018 21:41:33 GMT -5
need a rocker arm / camshaft holder If not aware . . there are 64mm and 69mm valve length rocker arms. |
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Sophomore Rider
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Post by bigmac on Jul 4, 2018 11:47:58 GMT -5
I got my new rocker arms from a seller whom I've ordered from before as he appears to know about these things and even points out that there are 64mm and 69mm versions in his listings.
It was brutally hot and I was sweating profusely while working but I got it all together. Everything seems to be good after its first few uses. Hopefully no more oil leaking nor cracked rocker arm / camshaft holder.
That kind of has me freaked out now. I feel like at any moment, some part of the engine is going to crack and blow apart while I'm miles from home.
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Post by chewbaca on Jul 4, 2018 18:23:15 GMT -5
this is just a simple truth
at any moment a scooter can break down and leave you stranded
same as a car
but I can push my scooter home and fix it my self
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