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That same part broke on my '85 and I used a fitting that's normally used to extend the diff breathers. Part number is 90404-51319.
packetstormin said:Mine is not threaded. Mine is what's called a push style hose union.
From what I can tell it changed in 86 or 87 to the threaded style. I have a threaded style union I picked up from the dealership.
How hard would it be to use a tap and die and cut the threads so that the threaded union could be used? What I have to pull the entire lower manifold off in order to tap it?
packetstormin said:Upper plenum is off so it should make it easier. I will give it a go with a tap and report back.
I wonder if I pull the thermostat out if I could get a shop towel in the thermostat housing where the hole is. Maybe that would stop some shavings falling in as well.
Next question would be is Teflon tape better or maybe a thread or pipe sealant on the new union?