I forgot witch line is witch..lol.. I need to know witch line is in and witch is return ? Also on the rad. I need to know in and return ? Thanks....
the front line on the C4 is the pressure line and the rear is the return. Looking at the radiator as though you are sitting in the driver's seat the right side (passenger) is the return.
Thanks Paul, I'm going to get that done this week end... Also going to hook up a cooler in series to give it a little extra protection...
It doesn't matter which goes where on the radiator. It'll work the same either way. Put the lines where they fit with the least amount of modification if they're not the original lines.
The auxillary cooler should always be connected to the return line of the transmission. The factory line has a large "U" bend just before it goes into the right side of the radiator. That is a perfect place to cut for tying into the new cooler.
You mean AUX cooler is downstream of the radiator cooler...yes? The lines to and from the coolers have no really easy route. If I use rubber hydraulic hose it's really going to be an eyesore.. and the coolers I'm lookin at want rubber hose..
I trimmed off the ends of that metal lines, then used a short rubber trans line to complete the conection... Line go's from pump side of the trans to the right side of the rad then out the left side to the cooler, then out of the cooler back to the metal return line.... I hope this helps you... The radiator and and added cooler are in series for proper cooling...
the front line is to the radiator and it is on the driver's side of the radiator. The passenger side of the radiador has a line with a bit of extra line (from the factory) with a 180 bend. That line should go to your cooler - If you cut the line at the bend you can use short hoses (at least 250 psi "Pushlock" or equivalent) to run to the cooler. The lines run from the front of the C4 to the driver's side of the radiator, from the passenger side of the radiator to the bottom of the cooler and from the top of the cooler to the rear of the C4. That will prevent air fom staying in the cooler and give you the maximum cooling for your C4.
thanks for clearing that up... I was planning on mounting the cooler sideways anyway, yet was trying to weigh the pros and cons of whether to introduce the fluid at the top or to the bottom. I was thinking of the tranny pump having to "push" the weight of the fluid to fill the extra cooler vs the weight of the fluid pushing by gravity towards the tranny, if I were to fill the new cooler at the top. (wow I reall split hairs sometimes) I will do it as you say, push to the bottom of new cooler. I plan to use copper 5/16" inch tube and 5/16" SAE 45 degree fittings to avoid the sharp sheetmetal that rubber tubing would probably contact. Two short 2-1/2" hydraulic 3/8" hose pieces to connect to the 12x12 Hayden, double clamped, if possible. I want to change my fluid too.. I realise that over the years there is many different fluid types in there.. I just had a new filter put in when I had my guy weld in a sending unit in my pan. I dont want to take the pan off again can I disconnect the line at the radiator and run the tranny dry in Park? Or should I introduce new F fluid at the same time via a IV drip like in a hospital.. gallon jugs in a milk crate hoses to the OEM steel lines..
I just called and NAPA has the steel line AND steel fittings... so the guy says. You made me make one last call.. thanks! I'd given up looking for steel. Copper can work harden and suffer what we call in the boat biz "sudden catastrophic failure" ..
Ha ha NAPA did not have steel SAE 45 degree fittings...;brass. But I did buy two 40" premade 5/16" steel hoses that have male compression fittings(which I'll cut off.) Heavy wall .032 copper probably is just as good and would cool better..
