Intercooler Leak Detection...
#14
#16
As Uncle Bubba stated, some of these guys are new. When I first started reading forums and wrenching, I would have looked at your post count, along with "chpmnsws6" post count, and normally just gone with who ever had been around here longer. For many of us, this is our only lifeline then starting to wrench on automobiles. That would mean I'd been spraying the intercooler down with soapy water which would have done nothing but cleaned it. Come to think of it, when I had my 1991 Eagle Talon, I did that exact thing looking for a boost leak, because no one mentioned the fact it needed to be pressurized
#17
#18
All intercoolers leak; they're designed to. That's why they are technically known as "finny leakers".
Cummins procedure for testing whether a finny leaker meets their standards (on an ISB) has two parts.
First, it calls for no more than a 3 PSI pressure drop across the finny leaker under load. I'm sure this spec is higher when you're running twice as much boost as stock.
Second, it calls to cap the finny leaker (PVC works stuck into the existing booties works) and pressurize to 30 PSI (tap a regulator into your PVC elbow). Shut air flow to it once it reaches 30 PSI and it should drop no more than 7 PSI in 15 seconds. Be aware that a piece of 4" diameter PVC with a lot of 30 PSI air behind it can put you in the hospital if it flies out.
Expect to see bubbles with pressure in them and soapy water. It in no way condemns the finny leaker.
Cummins procedure for testing whether a finny leaker meets their standards (on an ISB) has two parts.
First, it calls for no more than a 3 PSI pressure drop across the finny leaker under load. I'm sure this spec is higher when you're running twice as much boost as stock.
Second, it calls to cap the finny leaker (PVC works stuck into the existing booties works) and pressurize to 30 PSI (tap a regulator into your PVC elbow). Shut air flow to it once it reaches 30 PSI and it should drop no more than 7 PSI in 15 seconds. Be aware that a piece of 4" diameter PVC with a lot of 30 PSI air behind it can put you in the hospital if it flies out.
Expect to see bubbles with pressure in them and soapy water. It in no way condemns the finny leaker.
#19
Thread
Thread Starter
Forum
Replies
Last Post
Diesel Bombers
Latest Automotive Industry News
0
12-05-2014 08:30 AM