Recent content by FrankGRUN

As a FYI note, the air speed measured is, among other factors, a direct function of the pressure differential across the radiator. The fan generates a reasonably localized low pressure zone and air flows in to the pressure gradient. These measurements were taken at 6,125 ft. elevation...

I was surprised how uniform and how repeatable the air speed numbers are, both for the radiator with triple fans mounted in the garage on my test bench and for the Jeep in the driveway. I not only carefully moved the anemometer around the core surface, I also did the measurements flush with the...

Given that the air speed numbers drop off so sharply at the mechanical shroud boundary, I think it is reasonable to choose the mechanical fan area value for the air flow calculation to be the dimension of the core bounded by the shroud. On my Jeep, the there is no frontal air path other than the...

Just setup the anemometer for some measurements at the condenser face of the operating 1996 Cherokee 4.0L with the factory dual mechanical clutch fan and electric AC fan system. The air speed measurements: Idle (cold) mechanical fan side - 950 ft/min Idle (engine at 210F) mechanical fan side...

Good point! I had thought about it but thought my fingers were in jeopardy! The Cherokee is fully operational as yet till I do the radiator exchange. Hope to start Saturday. I'll try to rig up something to get in there. I can certainly measure the airflow through the radiator/condenser...

I'm in the process of installing a new all-aluminum bar and plate radiator (BC1193) from Champion Cooling in my 1996 Cherokee. It turns out that in 2013, I purchased the Triple Threat Extreme fan set with integrated shrouds from FF Dynamics. I didn't install them at the time because of a number...

Just thought I'd offer a few pressure measurements for background. My 96 XJ has no radiator/cooling system leaks, but I had repeated radiator cap (Crown) leaks. I installed a mechanical pressure gauge tapped into the upper radiator hose. Running a Stant 16 psi cap, the system routinely runs up...

Anak, very helpful information. The shipping damage was rather significant to me. I would not have been able to repair the port. As for shipment packing, my BC1193 was packed identically to yours. Apparently, the transit from SoCal to Northern Nevada is a bit softer! As to the lower bushings, I...

Very interesting idea. I was only focussing on the effective electrical conductivity of the glycol/water mix. The various additives in the commercial solutions are designed to minimize Aluminum galvanic corrosion, but their effectiveness rapidly degrades at sustained temperatures above 210 F. I...

Just a quick note ... Given the Aluminum radiator and all the dissimilar metals in contact with the cooling system liquid (in my case 50% water) I've replaced the side radiator drain petcock with an anti-corrosion anode (1.75 inches long and bonded to a brass 1/4 NPT hex fitting).

I guess I was lucky, no shipping damage. I can't get to the install for at least a week. How did the installation go? Any fitment issues? There haven't been any reports on Champion radiators in the XJ threads I could find since Cal's report in 2019. Hopefully they have had the time to address...

Today I received the Bar and Plate BC1193 radiator from Champion. To my untrained eye (no Aluminum welding experience) it looks rather impressive. I had been trying to get some technical detail from Champion about liquid core height. I was told that the core thickness was 2.125 inches and the...