Being the original owner of my 89 and when polished all the aluminum parts on my engine I had my heater tube chromed I don’t ever remember seeing any O-ring on the heater tube (between the upper and lower nut or any where else), and I never installed an O-ring when I reinstalled the heater tube either and I’ve never had a leak so I’m really curious where this O-ring is suppose to go?
Last weekend I help a good friend pull his engine and when removing the heater tube I specifically looked and then asked my friend to look for an O-ring somewhere on this heater tube that you’ve talked about. Neither he nor I could find any O-ring, but we both agreed the end from the top heater tube had a swagged flange that shows up in the bottom portion of the nut that screws into the lower intake as
Boydster had mentioned.
Any pics of where this so-called O-ring goes would be very appreciative.
Thank in advance…