Leakdown Testing

Jim B · 06-04-2012, 08:15 AM

From the sound of your post I would doublecheck the accuracy of your 0 - 90 -180 - 270 markings on your damper and insure the 0 mark on the damper is really #1 piston TDC. I've seen a partially spun damper off by less than 5 degrees cause what you are describing. I am assuming you don't have some outrageous piston wrist pin offset that might contibute to this scenario. (I've never seen up to a 0.60" offset have any effect)

06-04-2012, 08:15 AM	#4
Jim B Member Join Date: Dec 2008 Posts: 100 Likes: 0 Liked 1 Time in 1 Post	Re: Leakdown Testing From the sound of your post I would doublecheck the accuracy of your 0 - 90 -180 - 270 markings on your damper and insure the 0 mark on the damper is really #1 piston TDC. I've seen a partially spun damper off by less than 5 degrees cause what you are describing. I am assuming you don't have some outrageous piston wrist pin offset that might contibute to this scenario. (I've never seen up to a 0.60" offset have any effect) Last edited by Jim B; 06-04-2012 at 08:20 AM.