Leakdown Testing

BlueOval Ralph · 10-04-2012, 01:50 PM

Those Sun Leak Down testers are like Gold I have two one in the shop and the one in the trailer. When there is a auction in the area I look for them. As I remember no mater what the input pressure is the only put 30 or 60 psi into cylinder.

motohead1 · 10-04-2012, 02:07 PM

Thanks to everyone for all the info. Chuck

Ed Wright · 10-04-2012, 02:49 PM

Quote:

Originally Posted by BlueOval Ralph

Those Sun Leak Down testers are like Gold I have two one in the shop and the one in the trailer. When there is a auction in the area I look for them. As I remember no mater what the input pressure is the only put 30 or 60 psi into cylinder.

That's what I use. Have had mine for forty years. (got it in 1972) Still works like new. Just needed a new hose once.

FED 387 · 10-04-2012, 03:17 PM

Yep had mine bout that long too-NO its not for sale---one more thing remember to RESET TO ZERO the % gauge before you go do the next cylinder( part of the attach/ unattach/attach tap the lense LIGHTLY routine---REPEATABILITY is what counts here---this is not rocket science merely comparing one cylinder to another looking/hearing for wear or malfunctions/damage---we always leak a new engine before start up/after initial start up to get a baseline for the future to see how much wear we really are getting as we put runs on the car--but we do leak it at the end of EVERY day racing just to see whats going on-FED387

Harry 6674 · 10-04-2012, 03:41 PM

It's also good to check for leaks with the piston all the way down (with rockers backed off). Just a little more information.

David Lee · 10-05-2012, 04:05 PM

Good day, can a leak down test be done on a cold engine?

Ed Wright · 10-05-2012, 04:41 PM

Quote:

Originally Posted by David Lee

Good day, can a leak down test be done on a cold engine?

Sure.

FED 387 · 10-05-2012, 04:45 PM

Engine temp really does not come into play here!!!!!

10-04-2012, 01:50 PM	#1
BlueOval Ralph Banned Join Date: Feb 2008 Posts: 852 Likes: 0 Liked 0 Times in 0 Posts	Re: Leakdown Testing Those Sun Leak Down testers are like Gold I have two one in the shop and the one in the trailer. When there is a auction in the area I look for them. As I remember no mater what the input pressure is the only put 30 or 60 psi into cylinder.

10-04-2012, 02:07 PM	#2
motohead1 Junior Member Join Date: Apr 2009 Posts: 8 Likes: 0 Liked 0 Times in 0 Posts	Re: Leakdown Testing Thanks to everyone for all the info. Chuck

10-04-2012, 03:17 PM	#4
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,422 Likes: 529 Liked 333 Times in 180 Posts	Re: Leakdown Testing Yep had mine bout that long too-NO its not for sale---one more thing remember to RESET TO ZERO the % gauge before you go do the next cylinder( part of the attach/ unattach/attach tap the lense LIGHTLY routine---REPEATABILITY is what counts here---this is not rocket science merely comparing one cylinder to another looking/hearing for wear or malfunctions/damage---we always leak a new engine before start up/after initial start up to get a baseline for the future to see how much wear we really are getting as we put runs on the car--but we do leak it at the end of EVERY day racing just to see whats going on-FED387

10-04-2012, 03:41 PM	#5
Harry 6674 Senior Member Join Date: Dec 2006 Posts: 589 Likes: 0 Liked 0 Times in 0 Posts	Re: Leakdown Testing It's also good to check for leaks with the piston all the way down (with rockers backed off). Just a little more information.

10-05-2012, 04:05 PM	#6
David Lee VIP Member Join Date: Oct 2007 Posts: 1,168 Likes: 487 Liked 346 Times in 126 Posts	Re: Leakdown Testing Good day, can a leak down test be done on a cold engine?

10-05-2012, 04:45 PM	#8
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,422 Likes: 529 Liked 333 Times in 180 Posts	Re: Leakdown Testing Engine temp really does not come into play here!!!!!