Greetings all,

Took my 67 RS 327 with auto transmission out for a spin this afternoon. Upon returning found that coolant is dripping from a joint in the line as it heads up / from the radiator.

Suggestions on how best to repair this? Since it's at the joint I'm hoping it's just a matter of de-joining, applying some type of joint sealant and rejoining the connection?

She's been sitting a long long time and I'm slowly going through all the nooks as they "spring" loose :)

THNX for the help

THNX

Allow me to clarify... the leak is on a joint that is a transmission cooling line.

Please clarify. Was the leak transmission fluid or coolant? The leak happened at the radiator?

The transmission lines should be one peice.
In order difficulty/expense:
loosen then tighten the connection and see if it seals up
remove the connection, put a flaring tool on and squish the flares a bit.
Cut an inch off the offending pipe and reflare.

In order of right:
Buy new properly bent repro lines and factory style clips, and replace both trans cooler lines.

The 93 vette I bought this summer has a joint in one of the trans cooler lines, reason unknown. If it ever leaks, the entire line will be replaced.

Do you have engine coolant leaking from a trans cooler line? Or is it trans fluid? If you notice engine coolant (as in green antifreeze) on your trans cooler line at the radiator, you probably just lost a little coolant out the overflow hose and that's where it landed. If it's trans fluid that's leaking there (red) do like Jim said and tighten the fitting. There is no joint sealing compound for flare fittings.

My apologies for muddling the description.

It's a coolant line (green) that makes a loop from the transmission to / from the radiator.

After about a five mile ride, she'll leak an easy pint to a quart, so it's a heavy leak, epically under pressure.

I'll try the tighten solution first, failing that I'll try the flare suggestion. Is there a joint compound that is suitable for this particular application?

THNX All!

try a dab of vaseline on the surface of the flare itself and then retighten slowly with proper tube wrench. I had a tranny line leaking at the radiator, but just a seep not a spray but I couldnt get it to stop. My mechanic buddy used vaseline on the flare and on the radiator side as well, also a dab on the stem behind the flare, then slowly tightened and its been dry for 3 years now. :thumbsup:
The vaseline lets the whole thing slip into a tight position where a dry fitting, even on the stem side, can bind before its tight.
Easy to try to see if it works. Also use magnifying glass on the end, it might have a crack in the flare, then do as the other suggest and cut/reflare.

Those cooling lines take transmission fluid from the transmission to the radiator. If you're loosing coolant at that connection you have a hole in your radiator. A radiator shop may be able to fix it.

hmmm,

Guess I'll do some tracing.... the fluid is green, not red.

THNX

What color stuff is on your trans dipstick?
Is it full to the mark (idling in park)?

What have you been adding to the car, antifreeze in the radiator, or trans fluid down the dipstick?

It's starting to sound like there is a crack where the trans cooler line exits the radiator. Coolant is running out, running down the bottom of the tube, hits that fitting and drips from there.