For cooling capacity (coolant), you literally have to do NOTHING. Even razorlab with his massive setup runs the stock radiator and fans. The CSF started leaking at a weld where the tube meets the end tank, and I can't weld aluminum. Pulling it once in SHAME was enough for me, because I should have listened that it wasn't needed. I wasn't going to patch it and try it again. The OEM one went back in and has been great for many track events. My power isn't near what others have pushed with the factory radiator. It is fine.
For oil cooler, I went completely custom with a Derale 25 row core. MAP has a great kit (as mentioned above). I did buy a SPAL fan to bolt onto it, but haven't needed or used it (still in box).

 

I'm not sure when Radium changed the fuel hanger design but if it was before the 21st of October 2020 their new design will still need a surge tank.

Good to hear that there's plenty of cooling from the factory setup. Summers out here are hot a humid. With both of us driving, the car gets very little cooldown.

For the oil cooler fan, adding an inline thermal switch would be pretty easy and would only run when needed.

Did you happen to take any pictures of your JUN oil pan before you installed it?

 

The fan will block airflow at speed. I recommend against it. You also have little to no room behind the oil cooler to add a fan. Especially if you are running higher offset wheels with 275+ tires.

Just cut out the factor fender liner vents more, that will give the cooler more airflow. The oem liner only has one side with holes. Here is before and after of mine:





Does your fuel basket look like the first or second one:




Here is a video show the JUN next to the Moroso. Keep in mind his comments are before trying to install the Moroso pan. In fact, later he puts in the comments that it was a nightmare trying to fit it.

 

I replaced the section with a wire mesh a while ago when I replaced that inner fender well. Not sure if it helped.

When rebuilding the 4b11t what are things that need special and what parts can be reused? For example, piston failures are not excepted until 500hp and 9k rpm.

 

Yes I did:

 

Here is the 25 dual Derale setup I have going on:

Drivers side for SST (one of three coolers):




25 Row for OIL:





Final front end with ductwork and coolers:

 

if you fuel starve (ie exiting a corner on power), will that be a "true" lean scenario that causes lean scenario and knock, or would the engine just pull timing/stop?

i remember years ago top gear did a 1-gallon race with supercars until they ran out of fuel... a very expensive test if it actually caused the motors to go lean

 

I would imagine that "supercars" do not have this issue. MHI decided to use this tiny little tank without a sub-tank pickup area, and a hump going to the passenger side. There is a venturi that pulls fuel from there, but not enough when there isn't a good place to PUT the fuel once it is sucked over (from the factory).

 

i mean regardless of starve per se, any car will reach a point where there's no more fuel picked up (the top gear bit ran them until totally empty) - what then? mass lean to detonation?

 

Mass lean and things like this happen, this is my spark plug and valve when my Evo 10 was starved of fuel.

 

I guess the short answer is that running out while idling versus running out under high load determines if damage will occur. It isn't good for ANY car to run out (and hence go lean) under load. The pics razorlab posted are a great example of the mayhem that occurs!