Cylinder Pressure Test

[Adirondackstihl]

Gonna try to make a homemade adapter for the plug hole using an old plug so I can press /vac test easier.

This is where I'm at. I found the nipple in muh tool box.

Am I on the right track?

 

[jake wells]

 

[CR888]

Hardest part is getting the porcelain out of the spark plug. They can be stubborn! Once you have the barbs that match the hose on your Mityvac, JB weld is all you need. While your at it, make up a 10mm one too for smaller saws blowers etc.

 

[drf256]

Needs to be barbed Jeremy. Unless you're looking to connect the entire Saw to your compressor, but then you can't do vacuum.

 

[Al Smith]

FWIW if you cut the metal off even with the hex portion a 1/4" pipe thread tap will cut nearly perfect threads inside the plug base . With a wrap of teflon pipe tape it won't leak .

 

[Steve670]

Made a couple myself, the first one I jb welded but it leaked, second one I soldered and it's been airtight so far.

 

[Magic_Man]

View attachment 46824 Gonna try to make a homemade adapter for the plug hole using an old plug so I can press /vac test easier.

This is where I'm at. I found the nipple in muh tool box.

Am I on the right track?

What the others said, a barbed fitting that fits the hose on your tester would be better. What your building is what we used to use when changing valve springs on cars without tearing the heads off. Hook the compressor hose to the fitting and pressurize the cylinder to hold the valves in place.

 

[Adirondackstihl]

Needs to be barbed Jeremy. Unless you're looking to connect the entire Saw to your compressor, but then you can't do vacuum.

I'll look for a barbed fitting at the hardware store this week!

 

[Adirondackstihl]

Hardest part is getting the porcelain out of the spark plug. They can be stubborn!

You ain't sh!tten!

 

[Warped5]

Hardest part is getting the porcelain out of the spark plug. They can be stubborn! Once you have the barbs that match the hose on your Mityvac, JB weld is all you need. While your at it, make up a 10mm one too for smaller saws blowers etc.

Jeremy, if you have access to a metal lathe you can cut the rounded metal area off (where it meets the porcelain). Remove enough until you see the edge of the lip clearly, then put the plug in a vise and give the electrode end a good whack using a small drift. The whole assembly should fly right out.

 

[Adirondackstihl]

I got it out using a vice, hammer & punch.
Took more than I expected for sure.
My buddy with the machine shop is in Florida at the moment.

 

[psuiewalsh]

http://performanceoutdoorequipment.com/products/pressure-test-plug-tool

 

[exSW]

My Mittvac came a plug hole fitting for vac tests.g

 

[Warped5]

http://performanceoutdoorequipment.com/products/pressure-test-plug-tool

Keith, what fun is that?

 

[Adirondackstihl]

My Mittvac came a plug hole fitting for vac tests.g

Guess maybe I should look huh?

 

[Adirondackstihl]

http://performanceoutdoorequipment.com/products/pressure-test-plug-tool

Who's site is that?

 

[exSW]

Guess maybe I should look huh?

Maybe,little blue plastic thingy. Need to Teflon tape it.

 

[psuiewalsh]

Who's site is that?

Ford150.

 

[Al Smith]

Within the last two or three weeks I used a plug to make a fitting to hydraulically push a piston out of a chainsaw.I used a long thread Ford plug which I cut the threads short.

Getting the porcelain and electrode out of it wasn't that big of a deal .Tap tap tap with a little ball peen not thump thump thump like driving a railroad spike .

As far as that goes I'd imagine if you surfed flea bay you could probably find an M14-1.25 bushing on the cheap .Whatever works,a plug or a bushing ---same same .

 

[Adirondackstihl]

Maybe,little blue plastic thingy. Need to Teflon tape it.

It's a Mityvac 8500 kit.
Maybe it's in there.
I think I recall a little blue piece.......