Maybe our sight admin guy can put us on the “other engine†board under Jag six.
The Jag six is a wonderful motor that dates back the second word war. It has some history as well. It won a few Lemans races in the late fifties and managed to make Enzo rethink his game.
The 4.0L motor has an iron block with aluminum heads. There are racing articles that say the bottom end can take 400hp without modification. The head can easily produce 350 hp in naturally aspirated form with the right cams and headers. The Jag six has more performance items available than the twelve. This should suggest something in itself.
It is my thought that a naturally aspirated, Megasquirted fuel injected motor with hi performance cams and headers would provide the Z with a very lively level of excitement. However with deep pockets and an old low compression bottom end, new fuel injection head, turbo(s) and a Megasquirt system, the car would be something else all together.
There is some interesting reading on turbo charging the Jag six in a book called Fuel Injection by Jeff Hartman.
The author's three-turbo, twelve-injector, six-port nitrous, 3x2-throttlebody Jaguar XKE. The fuelling system has run with both Haltech and NOS EFI control. The enormous Cartech Intercooler (far right) is tilted slightly forward for radiator air flow. TWM throttle bodies have over-and-under injectors, a total of twelve of them on a twin-cam, six-cylinder engine. A Bosch fuel pump located on the bulkhead in the trunk's spare tire compartment, provides plenty of fuel for up to 8OO hp. Note the triple turbo "Heiney Manifold" by Latham Race Cars, Austin, Texas.
Hey Matt:
The critical measurement will be the length. Motor rad and fan all have to fit. If you put the rad out front then you might not have room for your intercooler later.
You can find a bell housing here.
http://www.longrun.com/parts/parts.htm
Ok Matt…Get to work!