Leak Down Testing - ZR-1 Net Registry Forums

tf95ZR1 · 04-25-2018

Good article about just compression
vrs. leak down testing:

https://www.hagerty.com/articles-vid...25_HagertyNews

Paul Workman · 04-26-2018

Thanks 4 posting, Ted. Good general info for DIY'ers to tuck away!

I don't have a leak-down rig, but that's an idea for the HOTB!

If someone wants to grab the bull by the horns and conduct a test, document the heck out of it with pictures, etc., AND maybe couple that with a source for a LEAK-DOWN TEST RIG...that would make a dandy article!!

Any takers??

tnova · 04-27-2018

Ted,
Good article. Leak down testing is a great next step after compression testing. I've done it on one of my "Brand P" time trials cars and recently worked with the Houston guys who were at the South TX BBQ to leak down a C5. I've used expensive and less expensive leak down rigs and hate to admit that the Harbor Freight rig does just as good a job as the Snap On rig. Be cautious of the threads on the HF rig. I recommend chasing those with a die first. When we couldn't get the HF fitting to screw into the spark plug hose, we swapped out the fitting from a compression tester we knew easily screwed in.

BTW, wish I was with you guys this weekend at ACS.

Tony - Tnova

04-25-2018	#1
tf95ZR1 Join Date: Aug 2005 Location: Northridge, CA Posts: 1,456	Leak Down Testing Good article about just compression vrs. leak down testing: https://www.hagerty.com/articles-vid...25_HagertyNews

04-26-2018	#2
Paul Workman Join Date: Nov 2007 Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri Posts: 6,466	Re: Leak Down Testing Thanks 4 posting, Ted. Good general info for DIY'ers to tuck away! I don't have a leak-down rig, but that's an idea for the HOTB! If someone wants to grab the bull by the horns and conduct a test, document the heck out of it with pictures, etc., AND maybe couple that with a source for a LEAK-DOWN TEST RIG...that would make a dandy article!! *Any takers??* Last edited by Paul Workman; 04-26-2018 at 08:47 AM.

04-27-2018	#3
tnova Join Date: Oct 2013 Location: Spokane Valley, WA Posts: 115	Re: Leak Down Testing Ted, Good article. Leak down testing is a great next step after compression testing. I've done it on one of my "Brand P" time trials cars and recently worked with the Houston guys who were at the South TX BBQ to leak down a C5. I've used expensive and less expensive leak down rigs and hate to admit that the Harbor Freight rig does just as good a job as the Snap On rig. Be cautious of the threads on the HF rig. I recommend chasing those with a die first. When we couldn't get the HF fitting to screw into the spark plug hose, we swapped out the fitting from a compression tester we knew easily screwed in. BTW, wish I was with you guys this weekend at ACS. Tony - Tnova