[tonyroma]

As the title states, I am looking for the thread size/pitch of DSM spark plugs. I believe it is M14 x 1.25, but I'm not positive.

Reason I ask is I am performing the compressed air method on my car to do valve stem seals, and I need to make/order a fitting.

Thanks for your help!

-Tony

 

[stevep]

Based on my cheap calipers it's M14 x 1.50mm

 

[tonyroma]

K. Now it's a tossup! I'm thinking about going outside work and setting a tap next to the plugs in my car lol. Trying not to do that though...

Thanks Steve, anybody else?

 

[stevep]

Since they don't make a M14 x 1.5 spark plug thread I'd use the M14 x 1.25 measurement.
I guess my eyes aren't that good anymore, sorry.

 

[tonyroma]

Since they don't make a M14 x 1.5 spark plug thread I'd use the M14 x 1.25 measurement.
I guess my eyes aren't that good anymore, sorry.

Oh yeah!? Well thanks man; I still think you're in the prime of your youth BTW. :rofl:
:happy:

 

[PROZIUM451]

If your mind isn't set on comp. air, you could try using rope. It offers a physical stop for the valves so you don't overpower the air. Just cram the chamber full of rope, crush it by moving the piston up and then go to work.

 

[kennyjr904]

OR........you could get a compression tester from your local parts store (the screw in kind) and remove the schrader valve. Connect it to an air hose and you are in business:happy:

 

[tonyroma]

OR........you could get a compression tester from your local parts store (the screw in kind) and remove the schrader valve. Connect it to an air hose and you are in business:happy:

Yeah, I'm kind of old-fashioned though. I'd rather get something which actually threads in, and about 90psi ought to do the trick for holding them up. It's nicer to be able to set a pressure regulator, connect a line and be problem free if you ask me.

I know about the rope method, but that's way too much of a pain in my ass. Rope takes forever to get into the cylinders and to be honest, I don't have the patience! Compressed air FTW. Thanks for the advice though guys!

 

[kennyjr904]

Yeah, I'm kind of old-fashioned though. I'd rather get something which actually threads in, and about 90psi ought to do the trick for holding them up.

The compression tester does screw/thread in. The end that the gauge would normally hook to will connect to your air hose.

 

[tonyroma]

Yeah, I ended up making one anyway. Worked out well! Man, it's nice having a car that doesn't burn oil and smell like shit! Haha, anyway I'm finished, so mods can close this now unless anybody else has anything to say.

 

[tonyroma]

Oh yeah, and I used the Toyotool for the valve springs. That tool is fucking AMAZING. Springs came off in 30 seconds or less, and the installation of the springs/retainers/keepers went even faster. I do recommend buying valve stem pliers though, taking the seals out without some was a royal PITA.

-Tony

 

[talon_boy69]

You can also put the pistons in TDC for this.

 

[tonyroma]

I did both.