Filling H2O ports on 4.0 head & Conversion Issues
I found a 4.0 head and exhaust manifold from 93 Wangler over the weekend. Tried finding folks to weld the ports, but told by two different folks who do much welding on heads, that they wouldn't touch this head because the ports are close to the sides of the head and probably would led to cracking. So...it is JB Weld time. If you have JB Welded these closed, I'm interested in how you managed to get it to adhere to the small sides of the ports and how you held it into place. Was there any shrinkage? Does the filling in or blocking of these H2O ports create any problems related to overheating. There are 12 of these triagular ports that permit quite a bit of flow through the 4.0 head, but with them plugged the water flow would seem to be significantly reduced?
Also, I am aware that some of you have used the 4.0 head gasket and others have used the 4.2 head gasket. I purchased both head gaskets for comparison. The 4.0 head "value cylinder" is a bit wider than the 4.2 cylinders does this create a problem?
Appreciate your wisdom. Thanks, MindBender
If you've had the experience, I'm also interested in how well a exhaust manifold from the 93 Wangler will hook up to the 85 CJ exhaust system.