im trying to take ther y pipe out the way cause im going to replace the trans cooler lines an need room to work

any tips i have headers an the y pipe is a bit rusty

 

Spray it with penetrating lube the night before
Use heat if possible whether its oxy acetaline or a little hand held map gas

 

i will try that i hope i dont melt anything

 

Your not going to melt anything. Reason I went stainless everything.. If you have used muffler clamps and not band clamps i can almost bet your going to have to cut them apart.

 

cutting is not a option, all im trying to do is gain access to the trans lines , i figure some map gas n rust liquid wrench will do

i believe i have muffler clamps too

 

No what I am saying is if you used standard muffler clamps, and ran them down, then cutting will more then likely be the ONLY way they will come apart, because you crimp the pipes together when you run a muffler clamp down on the 2 pipes. Been there done that with peoples exhaust....

 

i have muffler clamps,
the best place to CUT would be on a even surface if you know what im saying

 

Make a single cut, horizontally, so you can spread the outer pipe. You'll probably need a torch to get the metal hot too, help it stretch some. Then when you put it back together you'll clamp it back down(with better clamps hopefully) and then weld the cut closed again. Or buy a new Y-pipe.

 

Well first before anything I would get under there, take them(clamps) off, just to see the extent of how much it crimped the pipes together, if you find that you have to bang the clamps off with a hammer it is a good chance your going to be cutting. Even the slightest crimp can make for a pita to get out. Again you will have to see before any cutting. I have had the best luck( if your trying to save the pipes for reuse is to cut slots at a small angle up to the point of the crimp, work on opening up the crimped section, then will have to weld them back shut. It can be a pita for sure, or you might have got lucky and it will infact slide out. I will bet from now on you will not use a muffler clamp if they are crimped together.

 

going to take a closer look, an see