Leak tester plug

[ScottSchwarzer]

I recently build a leakdown tester and now all I need is an exhaust blocker if you know what I mean. Where might I be able to find a freeze plug for that will fit the exhaust? And would the size be 1 and 3/8 to 1 and 1/2?

Thanks

 

[jus_me]

Any auto parts store should have them. 1-1/4 to1-3/8...its the one i use.

 

[Wheels]

This is the one you need: I purchased it from O'Reilly auto parts, the ones they sell for plumbing at Home Depot/Lowe's wont work.

 

[Wheels]

^This one is labeled 1 1/4 and works on on a ported exhaust. The hole is right around an inch IIRC

 

[ScottSchwarzer]

So which do you think for a stock exhaust port?

 

[Wheels]

The one I posted will work with a stock cylinder, I tested it on my spare a few months ago. I would get you a measurement, but that cylinder is somewhere in CT getting worked over right now.

 

[ScottSchwarzer]

Okay thanks you guys. I got the 1 1/4 - 1 1/3. Should do the trick!

 

[Awk08]

i send out the 1-1/8" to 1-1/4" expansion plugs from advance auto with my testers.
i'm told they work.

btw...a ported exhaust is ported on the cylinder side, the pipe side should still be the same original diameter as the crush washer, which is 1-1/8"

 

[jus_me]

You might want to go with what AWK said. For mine it takes a little fanagaling for me to get it in, but once i do its tight. Or you could get both there pretty cheap..

 

[ScottSchwarzer]

Uh oh. Oh well. I'll test it out tomorrow and see. Worst case i'll go get another one. It was only four bucks.