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What is this leak?


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Yeah i thought shearers too.

Well u can tell by looking at the cylinders if they have been ported or not but u should probably just post pictures on here. You know if u have a cool head if its shiny haha i guess thats best way i can explain it for you. Reeds- if they are v force reeds it will say on the sides of the cages. If compression is 180 then you have a cool head or a stock head thats been modified.  If u have a different crank than stock they are stamped on the side of the rods with a model number

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8 more bolts...
Buy a base gasket and cool head o rings.
Measure cylinders---take them someplace that can measure them and fit them with new pistons/rings.
 
Make your self a leak down tester...
 

Omg, you're gonna confuse this cat beyond.


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7 minutes ago, Ayesully810 said:

Yeah i thought shearers too.

Well u can tell by looking at the cylinders if they have been ported or not but u should probably just post pictures on here. You know if u have a cool head if its shiny haha i guess thats best way i can explain it for you. Reeds- if they are v force reeds it will say on the sides of the cages. If compression is 180 then you have a cool head or a stock head thats been modified.  If u have a different crank than stock they are stamped on the side of the rods with a model number

I do have a cool head sorry forgot to mention. I'm on stock cages for sure but the inside was carbon fiber so my buddy thought they might not be stock.

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1 minute ago, spurdy said:


Omg, you're gonna confuse this cat beyond.


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You beat me to it.  Thats just gunna go over his head 

Op if u really wanna learn how to work on these, read in these forums as much as you can and use that search bar to type in key words of what ur looking for.  Ive been on here actively for a year now almost and ive learned a lot and am still learning, most ppl here are willing to help too. Learning to diagnose a problem is important that way ur not chasing ur tail

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5 minutes ago, kawa110 said:

8 more bolts...

Buy a base gasket and cool head o rings.

Measure cylinders---take them someplace that can measure them and fit them with new pistons/rings.

 

Make your self a leak down tester...

 

Gonna look into the leakdown test after I get everything back together. I was thinking about ordering some new piston and swapping them myself, or do you guys not reccomend that? I want to save $$ obviously by avoiding the mechanic route, but I want to do things right.

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1 minute ago, spurdy said:

At this point you're probably best off to just post pics of everything. No offense, but I can't trust anything without a photo.


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Not a problem, I can post pics of everything's you guys need me to, just ask. It helps me too that way we're on the same page. 

 

What should my next step here be? Remove my cylinders? Should I place an order for a new set of reeds? If so which ones? 

Is it possible for me to get this done without going to a shop or mech?

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Gonna look into the leakdown test after I get everything back together. I was thinking about ordering some new piston and swapping them myself, or do you guys not reccomend that? I want to save $$ obviously by avoiding the mechanic route, but I want to do things right.

You have 65.50mm pistons. Stock is 64mm. So your cylinders have been bored over stock. Not good or bad just where you're at in the usable life of the cylinder sleeve. I wouldn't bore bigger than 66mm but that's me. Weisco makes larger dia pistons than 66mm.

That being said, before I put a set of pistons in it is want to make sure my bore was good. You need a bore gauge for that. A tapered bore or egg shaped bore will lead to failure. Your cylinder walls need to be parallel all the way around. A clymers manual has photos of how to check this with a bore gauge.

All of this information is out there and available if you will research it.

I know, asking someone is much easier, but you'll learn a lot more and remember a lot more if you work for the information a little bit.


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Yes its possible.  First take apart your top end and post pics of everything. Pistons and what the insides of the cylinders look like 

I am out on that one. For $40-$50 a hole I don't even mess with my own cylinders. Send them out and have them bored for the size piston I'm using. Done.

Pistons today are accurate enough they don't need to be fitted. Just double checked.


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2 minutes ago, kawa110 said:

Pistons and rings need fitted to cylinders, If you have the patience every here could walk you through most things and save you $
Post more pics..if you have a cool head the domes may be stamped with a number to tell size

I would highly recommend getting smaller cc domes so you can run pump gas and not eff ur engine.  That can be done when you go to order pistons from a builder on here

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