Critical tech note replacing a AC/DELCO DELPHI radiator
Replaced a OEM AC/DELCO radiator with a DELPHI OEM radiator yesterday.
Pulled the old radiator, it was still the original, sat it next to the brand new OEM replacement (DELPHI). Everything looked exact.
Went to put the petcock into the drain plug, and it was a super tight fit. Next I noticed the lock grooves for the petcock pin were not cut. So I cut them. Still couldn't get the petcock in. Went to Advance Auto and bough a Dorman petcock. Still couldn't get it in.
Looked at it for 5 minutes. Light came on. I shined a light down the old drain, whole was wide open. Did it on the replacement radiator, sealed shut.
Lesson learned- the new DELPHI, AC/DELCO radiators may not offer the option of installing a petcock and/ or draining the radiator through the drain. I specualte they no longer want to have a opening at the bottom of the radiator and expect a person to flush it a different way than drain and fill.
2001 Bonneville SSEi, 219,000 miles.
Whats in my driveway:
1998 Chevy S10 4x4 ZR2, 1999 Olds Bravada, 2001 Pontiac Bonneville SSEi, 2007 Ford F-350 regular cab 2WD, 2008 BMW 335i coupe (Wife'* replacement for her Bonneville). The Bonneville is my favorite of all the cars in the driveway.