Tweet
Removing the A.I.R. tubes from the manifolds and was able to get the 2 middle fittings without a fuss. The two outer tubes are another story and are not moving. One has an exhaust leak. Passenger side so plenty of room to work. Any hints. They are not stripped but are 35 years tight. My 9/16 flare wrench is not slipping on so I am using a box wrench. I would like to get them off with the threads intact in the manifold and the individual tubes. Is it impossible? Signed, the soon to be missing skin on my knuckles.
-
-
Re: A.I.R. tube removal from manifold
Charles-----
I really don't understand how you are getting a box wrench on these fittings. If you really mean an open end wrench, that's a VERY bad idea. You'll almost certainly round of the flats on the tubing nuts that way.
Anyway, as far as getting these off, sometimes the only way that will work is to heat the manifold in the area SURROUNDING the tubing nut fittings. It may take getting this area cherry red. Usually, at that point, the tubing nuts will turn free.In Appreciation of John Hinckley -
Re: A.I.R. tube removal from manifold
Hi Charles, try some penetrating oil and use a 9/16 brake-fitting wrench. This won't round the nut.
Ken.Comment
-
Re: A.I.R. tube removal from manifold
KROIL works great on threads that have been heated up. Also a high temp anti-seize on the threads will make taling them off easy.
KEN 780865 350 TI CONV 67 J56 435 CONV,67,390/AIR CONV,70 454/air CONV,
What A MAN WON'T SPEND TO GIVE HIS ASS A RIDEComment
-
Re: A.I.R. tube removal from manifold
Ken and Charles-----
Yes, you DEFINITELY want to use anti-seize compound on the threads when you re-install them (AFTER you clean the manifold fittings with a special tap). The compound that I recommend is Permatex #771. This is a very high temperature, nickel-rich anti-seize compound that's good to 2400 degrees F. It's expensive because it's good.In Appreciation of John HinckleyComment
-
Re: A.I.R. tube removal from manifold
Yes, the wrench used was a flare (brake line wrench), although it does not seem to fit. I think that these have been tightened in the past and they are now slightly asymetric, hence the 9/16 will only fit on 2 sides. I plan on retapping the threaded holes for the tubes in the manifold when I get them all off. Anyone know the tap size to use for these?Comment
-
Re: A.I.R. tube removal from manifold
Charles-----
The thread size is 1/4-18 NPSF. You won't find that in most hardware stores. McMaster-Carr has them, though.In Appreciation of John HinckleyComment
Comment