coolant header tank/tranny cooler

[keane]

Hi, just about to fabricate a header tank, thinking of using 4" ally tube, cut/welded with bottom feed and overflow etc, will fit on the rear bulkhead of my Dax cobra, not sure of the size of tank required? seen others but want to get it right, what capacity would suit?(BBF 429/C6) and what are the normal pipe sizes for the feed/overflow etc. Also trying to sort out the oil/Tranny cooling, what row cooler for the engine oil? and where do you guys mount your Tranny coolers for those running Auto? Are the combined Tranny/engine coolers any good? that would help with the space issue, vehicle is for street use generally, thanks for any advice offered. Dave

[Rick Parker]

The breather tank (?) you are attempting to make can also be made very neatly with by salvaging a pair of empty small fire extinguishers and cutting them apart. They have a formed bottom and look quite nice. The tubes going into them from the engine are usually 3/4". The cap and threaded bung can be had from some of the vendors that modify 9" Ford rear ends, they are used as a means to fill the oil into the axle housing . I think a current spec radiator with provisions for transmission oil to be plumbed into it as a means of cooling is a very good efficient alternative to an air to oil cooler. That being said the oil coolers used in the nose of the Cobras are about 13 inches between the hose fittings and 4 inches tall.

It is a nice little welding project.

Rick

[keane]

Thanks Rick appreciate the advice. Dave