New radiator big problems
Thread Starter
Pro
Joined: Oct 2005
Posts: 623
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From: SpringHill Florida
New radiator big problems
I replaced my radiator yesterday and when i started it up the lower fitting on the tranny cooler leaked all over.it is coming out the threads.there is an inverted flare on the cooler hose and the fitting in the tank looks correct. i have repositioned it and retightened to no avail. i purchases a second new radiator and there are o rings in the fittings in the tank why would you need these when a flare should be self sealing.i have not installed it yet but would like to get back at it tomorrow.anyone have any suggestions?
Drifting
Joined: Feb 2007
Posts: 1,793
Likes: 7
From: Santa Maria Ca.
Well,a flare WILL seal if you get it tight enough-but "tight enough" is probably just about the point where the fitting twists out of the radiator, so the "o" rings make it so "really snug" will seal it enough not to leak.
If you use a backup wrench properly on the radiator fitting,you won't have this problem.
As for YOUR leak-make sure there isn't a groove or flat spot on the sealing surface of the fitting on the radiator(take a CLOSE look-the threads don't seal it,the flare does)-it doesn't take much of an imperfection on the fitting to let it leak.
I'm assuming the flare on the pipe from the tranny is ok,since it wasn't leaking before,so if it's not crossthreaded,it almost has to be something wrong with the radiator fitting.
If you use a backup wrench properly on the radiator fitting,you won't have this problem.
As for YOUR leak-make sure there isn't a groove or flat spot on the sealing surface of the fitting on the radiator(take a CLOSE look-the threads don't seal it,the flare does)-it doesn't take much of an imperfection on the fitting to let it leak.
I'm assuming the flare on the pipe from the tranny is ok,since it wasn't leaking before,so if it's not crossthreaded,it almost has to be something wrong with the radiator fitting.
Team Owner
Joined: May 2006
Posts: 21,473
Likes: 356
From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----
Well what I did was get a tranny cooler and totally BYPASS the stupid radiator - they share too much heat !
Now the tranny is nice and cool and the motor is nice and cool - the new DEWITTS helps too
Get a tranny cooler and bypass it all together and you will not regret it one bit
Thanks,Matt
Now the tranny is nice and cool and the motor is nice and cool - the new DEWITTS helps too
Get a tranny cooler and bypass it all together and you will not regret it one bit
Thanks,Matt
