So you stop the piston on a 225 v the torque on the nut is rather high.
Piston stop rope trick.
Replace a broken valve spring replacing valve seals.
The rope trick is a technique you can employ to prevent your crank from turning.
This keeps the valve s held up so you can remove the keepers for spring and or seal replacement without having to remove the head to do minor valve repairs.
To perform the rope trick unscrew the spark plug from the spark plug hole and begin feeding a long piece of rope or something similar into the cylinder the idea is to fill the cylinder with enough rope that the piston is not able to reach tdc top.
Holding a motor with rope above the piston to prevent turning over.
If you get your hands on one of the metal screw in peg type piston stops don t use it on the smaller homeowner grade saws or you might puncture the top of the piston.
Rope works great as long as you follow what hittinstihl said.
Trust me on that one.
The rope thing yes i spotted on here that if you ve got to beat the clutch to get it off then don t use a piston stop use a nylon rope.
You feed the rope into a cylinder through a spark plug hole turn the crankshaft by hand to raise the piston up compressing the rope against the top of the cylinder.
Try the rope trick.
Summit racing has a large selection of piston stops from innovative products of america proform parts comp cams crane cams and more.
It is effectively an economical replacement for a piston stop.
Thats why tools are like sex cant have enough and while ya may.
Find out why close.
There could be several reasons why you may want to remove valve springs with the head s installed on the engine.
The rollers on the rod and wristpins are not designed for being used as a stop.
Use rope to hold the valves in place and r r valve springs with the cylinder head installed.
Don t have a piston stop or don t want to drop the cash on one.
You ll need a good quality piston stop to get the job done right.
Our top dead center stops come in your choice of brass billet or steel and with anodized zinc plated or natural finishes.
However the plastic piston stops work just fine too.
The next video is starting stop.
That and the correct tools are just to cheap and handy try the rope trick when changing a shaft coupler and you will see why.