FlowKooler Hi-Flow Waterpump & Hesco Thermostat Housing Install In Our Jeep XJ! 

I decided to do like you recommended and flushed out the heater core. All this rusty gunk came out! Good Rec. Also, the exact same thing happened to me! I sprayed water and soaked myself. hahaha luckily it's hot and I didn't mind. Love the videos.

Nice job.👍👍 Personally I would have used the good old green coolant and a THIN layer of gasket SEALANT on the t-stat and water pump to help along with the gaskets.💪👊😁😁

when I installed the flow cooler on the pink engine, I used a very thin layer of grey silicone helps keep it in place and extra peice of mind. that does remind me time for a flush.

Good content, excellent filming, keep it up man, doing a good job! 👍🏻👍🏻👍🏻

nice vid

Nice to see someone still doing XJ videos, will be interested in how the cooling works out for you once you start driving it again. I have a 96 as well over here in NM. Looks like mostly stock cooling on mine except for the electric fan that replaced the mechanical fan, sounds like a turbo fan when its running but it seems to do the job, never gets above 210 for the most part. I haven't done anything to the cooling system, mostly drivetrain and suspension upgrades so far. Keep the content coming. 👍👍

Nice video and easy to understand, I’m using the same Thor intake and high flow pump rebuilt my 4.0 to a 4.7 last year and it’s been running great with the increased cooling did the dpg 2 row aluminum rad a few years back it’s a great upgrade but I think they stopped making it.

I might upgrade to that. Never overheated but runs 212 in traffic in the AZ summer.

Great video, very informative and easy to understand. I do wish it showed you doing the actual instal, as I am a super amateur "mechanic" but I think I got it! I have a noob question. What's the benefit of the high flow parts? Does it make the engine run cooler? Getting too hot is always an issue with my jeeps. I've already bought the one you showed on the left. Would it be worth it for me to return it and buy the higher flow one? Thanks a lot man! I'm going to check out more of your videos.

Not sure if what pump and housing was put on mine. I could see that this could be a benefit as the pump would provide higher flow rate, but not so sure about the housing as it has a regulator called a thermostat. If the thermostat had a larger valve to allow a higher rate of flow that would be an important factor. On this type of system I like to drill a small hole into the thermostat valve to assist in eliminating any possible air pocketing in the housing on my previous 5.2 ZJ. I don't know if this would be something that could be beneficial on the 4.0. Yet I have come to appreciate the cooling system on my early XJ as it's different and I do not need to burp/bleed the system as the coolant expansion bottle sits higher than the rest of the cooling system. I can say that my girlfriends 4.0 '89 Pioneer here in the PNW doesn't have any cooling issue's on the over 300,000 mile engine. Yet I did install the proper switch in the radiator that is for the secondary fan, but has a manual switch if/when needed which is rarely used. Thank You for the content.

I always use RTV on these gaskets. I've never had a leak.

Always back flush the heater core.

Does it create higher water pressure in the system? Do I have to change the radiator cap for a different pressure? You done a great job with video.

OK, you're killing me. I've been debating on doing this to my XJ. How is that new water pump performing ?

Did you notice any better cooling? I only get warm pulling grade. Does ot help?

What radiator are you running? I wanna upgrade mine so I don’t overheat after putting this new head on

I have the flow cooler and a alumaworks radiator and 3 fan combo. I'm having a problem with the Jeep when it gets warm it doesn't want to idle. Any ideas what this could be?

Why not add a high flow thermostat??

Does it run any cooler? And which radiator is it?

Do they make a high flow wp for the 4.2l with v belts?

Are you just using a stock Thermostat, or is there a special one to get?

How has it held up? I’ve seen videos about cavitation and the pump braking apart by another RU-vid channel?

How did that high flow water pump and T stat housing work out for you

What radiator are you running?

Not happy with flowcool. I have a water pump less that a year old leaking and i cant get any response from them on it

What radiator is that?

Why not just use the 50/50 antifreeze

Do those hood vents work?

That's the wrong coolant you're supposed to use green and only green not orange antifreeze