Freshman Rider
Currently Offline
Posts: 64
Likes: 0
Joined: Apr 6, 2013 2:33:44 GMT -5
|
Post by natedoggaz on Apr 24, 2013 18:55:01 GMT -5
I have 2 rear shocks on mine...
It probably has stock weights - whatever that is... Doesn't using less weights just make the engine rev higher and reach top speed faster?
I will try replacing the head, piston, rings and gasket(s) while its in the scoot...
Anyone know a good place and price for this rebuild kit?
Hopefully my valves are OK and I wont need those as well...
Thanks!
ND
|
|
Freshman Rider
Currently Offline
Posts: 64
Likes: 0
Joined: Apr 6, 2013 2:33:44 GMT -5
|
Post by natedoggaz on Apr 26, 2013 23:58:43 GMT -5
I took off all the body panels tonight as well as the plastic engine shroud. The oil leak appears to be coming from before and after the exhaust port so it looks like I may have two bad gaskets... Not to mention the loss of compression which may be from the piston rings. I got a good price on a top end replacement, so I'm just going to do that and see what happens.
|
|
Freshman Rider
Currently Offline
Posts: 64
Likes: 0
Joined: Apr 6, 2013 2:33:44 GMT -5
|
Post by natedoggaz on Apr 27, 2013 1:43:47 GMT -5
It appears that I have found the cause of my oil leak and probably the compression issues as well?   Should I even worry about changing out the cylinder and head - everything looks brand new inside... The guy I bought the scooter from gave me the receipts and everything had been replaced already. I'm not sure how this gasket broke like this? Maybe it was just a cheap gasket? Is this causing my compression issues and the reason for it not starting you think? Thanks! ND |
|
|
|
Post by scootnwinn on Apr 27, 2013 9:34:50 GMT -5
That will do it just replace the gasket unless you want to rebuild a brand new motor... I wouldn't
|
|
|
|
Post by onewheeldrive on Apr 27, 2013 13:03:58 GMT -5
Hopefully the gasket fixes all your issues. I've seen a brand new head gasket that didn't appear to be properly made, right exactly where the bolt hole and tear is in your pic. I'm not sure if it was just bent out of shape or whatever. Maybe there was a flaw to begin with in that area?
|
|
Freshman Rider
Currently Offline
Posts: 64
Likes: 0
Joined: Apr 6, 2013 2:33:44 GMT -5
|
Post by natedoggaz on Apr 27, 2013 16:02:00 GMT -5
Good question... who knows what the mechanic did to the scoot for the previous owner. The receipts he gave to me with the scoot from all the work performed when he owned it were over $1300 of parts and labor!
The mechanic must have put a bad head gasket on it.
All the work that the previous owner paid for:
5/3/12-
piston
piston rings
new battery
6/25/12-
remaufactured cylinder head and gasket kit (engine tear down)
8/11/12-
new battery (warranty)
headlight wiring harness
starter coil
Looks like I just have to spend another $10 or so hopefully for this fix...
ND
|
|
|
|
Post by justbuggin2 on Apr 27, 2013 16:10:59 GMT -5
yea that blown gasket will cause the loss of compression you need to check the head for flatness on the mating surface get a good straight edge and use your feeler gauges ideally you will not be able to slid the thinnest gauge under your straight edge
|
|
Freshman Rider
Currently Offline
Posts: 64
Likes: 0
Joined: Apr 6, 2013 2:33:44 GMT -5
|
Post by natedoggaz on Apr 27, 2013 16:36:01 GMT -5
Ah, so you are saying I should check and see if it could possibly be warped?
ND
|
|
Freshman Rider
Currently Offline
Posts: 64
Likes: 0
Joined: Apr 6, 2013 2:33:44 GMT -5
|
Post by natedoggaz on Apr 27, 2013 16:44:00 GMT -5
Also, do I need to measure and see what size gasket I will need - or will any gy6 150cc 157QMJ head gasket work?
|
|
New Rider
Currently Offline
Posts: 39
Likes: 0
Joined: Apr 5, 2013 16:47:21 GMT -5
|
Post by kyle401 on Apr 27, 2013 16:44:09 GMT -5
Have you done this? Attachments:
|
|
Freshman Rider
Currently Offline
Posts: 64
Likes: 0
Joined: Apr 6, 2013 2:33:44 GMT -5
|
Post by natedoggaz on Apr 27, 2013 17:58:19 GMT -5
What is that picture of? I see its a cylinder...but not downloading on my phone.
Is it a gauge to measure the cylinder?
|
|
New Rider
Currently Offline
Posts: 39
Likes: 0
Joined: Apr 5, 2013 16:47:21 GMT -5
|
Post by kyle401 on Apr 27, 2013 18:44:47 GMT -5
It is basically saying in the pic to make sure the opening of the rings are not on top of each other or else it won't have compression
|
|
|
|
Post by alleyoop on Apr 27, 2013 18:49:49 GMT -5
I think when he put on the new gasket he rip it on the stud and did not bother to get a new one. The gaskets sometimes get hung up on the top threads and folks just pull it down and they will rip right by the stud the because that is where they will grab it and pull down to get it past the threads.
Alleyoop
|
|
Freshman Rider
Currently Offline
Posts: 64
Likes: 0
Joined: Apr 6, 2013 2:33:44 GMT -5
|
Post by natedoggaz on Apr 27, 2013 19:49:12 GMT -5
Thanks Alley! Sounds like a shady mechanic to me...will stay away from that place
I am not removing the piston, so at this time im not worried about the ring position. I am going to replace the gasket and see if that is the fix... most likely is.
What size you think.i will need - 58mm?
|
|
|
|
Post by justbuggin2 on Apr 27, 2013 19:54:45 GMT -5
use a set of calipers to measure it and yes to check for the head being warp
|
|
..BAD TO THE BONE..