RCNITROFREAK06

iTrader: (10)

I was cleaning my losi 8 truggy 454 engine and I took off the cooling head and for some reason a turned the flywheel with my hand and the piston sleeve moved up and I wasn't able to put it back to place ? Can someone help please

AZTman

Not sure how far in/out the sleeve is stuck, so bear with me. Make sure everything is dirt and dust-free and the cylinder has some after run oil on it or at the very least some fuel so it is slick. You can flush the engine out with fuel if there's any crud that fell in it. Make sure you are gentle with the sleeve. No metal tools on it, it scratches easily.
If the sleeve is completely out:
Heat up the engine case with a heat gun and hold it with oven mitts or work gloves or whatever. Don't heat the sleeve.
Rotate the piston to the bottom.
Hold the engine upside down, with open combustion chamber pointing down so the piston hangs in the center.
Slide in sleeve, matching up the notches if there are any to use for alignment.
When it's halfway or more in the engine, you might need to rotate the crank to get the piston inside the sleeve. Sometimes easier than when it's nearly all the way at the bottom.

If it's stuck halfway or mostly in, you might be hitting the piston or one piece or another might not be totally aligned.
Heat up the engine, trying to get as little heat on the cylinder as you can.
Back the sleeve out a little, flip over engine, align the piston, and continue as described above.

The reason you heat the engine case is so it expands and is easier to fit the sleeve. If you heat the sleeve a lot, there's less benefit to heating it all up.
It's a tight fit, but you want to keep everything clean and make sure you are not scratching the parts when you reassemble.

Stick with it! This is one of my favorite parts of racing!

nickdawg18

iTrader: (33)

Just pull it all the way out so you can disassemble the entire engine and give it a good cleaning

RCNITROFREAK06

iTrader: (10)

But I have no knowledge can I mess up something ?

nickdawg18

iTrader: (33)

It's super easy. Your going to need to do it eventually. Might as well start today lol. Just take pictures along the way and make sure the piston is at tdc before you remove the back plate.

RCNITROFREAK06

iTrader: (10)

The piston sleeve is sticking out 1mm is that normal ? Here's how it looks now

RCNITROFREAK06

iTrader: (10)

But in this pic it looks the same same position where the piston sleeve is ?

jnorwood_losi

iTrader: (10)

No it should not stick out....there is a notch in the sleeve that lines up with a dimple in the block

RCNITROFREAK06

iTrader: (10)

Do u know wat type of screwdriver is for the 4 screws that hold the back engine plate ?????

RCNITROFREAK06

iTrader: (10)

Does it look damage in any way ?

RCNITROFREAK06

iTrader: (10)

nickdawg18

iTrader: (33)

If you take it apart you can measure the thickness of the sleeves collar and the recess where the collar sits with a set of calipers. But im pretty sure it should be flush.

nickdawg18

iTrader: (33)

It does look like some pitting on the sleeve and on the piston head.

RCNITROFREAK06

iTrader: (10)

Which means I didn't do the break in correctly ?????

nickdawg18

iTrader: (33)

It could just be the camera angle. Was it running good before you took it apart? Hows the glow plug look?