Improving the cooling on our TJs

In case you didn't notice they built the engine around the head. Oh by the way, in case you didn't notice they got more than 50hp.
WTF, are you just dense or what? AGAIN (!!!!!!!!!!) that 50+ HP they gained was NOT from just replacing the head as you said/implied. Of course a 4.0 can be built to gain 50+ HP but NOT from just replacing the head with an Edelbrock.
 
Perhaps you didn't notice but they didn't just replace the head.

I found the video kinda typical for this Uboob generation we live in. The basics of the engine build were generally OK . However when you delete the port injection and computer controlled ignition , add on a hack job throttle body injection , ( that doesn't add any real power ) and resort to a Holley knock off carb for your Big dyno pull , I question your true abilities.
It is also interesting that the " math " used to pump up the numbers were based on the first pre. - HO version of the 4.0 ( 177 hp ).

What ever makes someone feel better is all that matters .

Oh by the way did I mention I installed Corvette 370 hp stickers to my 71 C-10 air cleaner ? That bitch runs cooler and the horsepower is unbelievable ! :LOL:
 
Here is the ultimate solution to over heating and you get a 50 hp gain and better mpg. https://www.edelbrock.com/performer-jeep-4-0l-cylinder-head-50169.html.
Quoted in its entirety so you can't go back to change your original post to add more than just changing the head to make that 50 HP gain.

That is rich from a macrame artist. 🤣
And where did you come up with that "macrame artist" bullshit? Blaine is a well-known Jeep builder/designer.
 
No insult here, I have always admired a guy that could weave rope into a thing of beauty.

Sadly, I am not the one that does that. The best I can do is a few eye splices and a few of the basic Boy Scout knots. I pay folks who are better than I am to do the things I am not good at. You should see what the guy that writes my forum responses charges me.
 
Not to mention his profile shows his occupation as gambler, not engineer.

Hey own a Jeep, every time I get in it it is gamble I will get home without calling AAA. Just some of the joy of ownership. 😀

P.S. Never had to call AAA yet.
 
Sadly, I am not the one that does that. The best I can do is a few eye splices and a few of the basic Boy Scout knots. I pay folks who are better than I am to do the things I am not good at. You should see what the guy that writes my forum responses charges me.

I can see what you mean. I could never figure out how these recovery guys make money on the rope or shackles with the time it takes to make those knots. Good luck with your recovery gear, it seem well thought out.
 
Simply saying technology marches on, the Edelbrook head is an advancement in technology that can offer TJ owners path to more hp and efficiency.

Probably the only factual thing you've posted in this thread. I agree.

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I like how you've been editing your posts after your argument gets destroyed. Nice. And your "66hp" worth of proof is compared to an older version of the 4.0, not the HO version that came in every single version of 6 banger TJ (which has an iron head). So even your 51hp gain was with an aftermarket performance cam, a header, roller rockers, no exhaust, a custom tune, no accessories......need I continue? I need to go back and look what rpm they ran it too also.

But back to the practicality or even theory of how it improves cooling........
 
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Probably the only factual thing you've posted in this thread. I agree.

View attachment 357137

I like how you've been editing your posts after your argument gets destroyed. Nice. And your "66hp" worth of proof is compared to an older version of the 4.0, not the HO version that came in every single version of 6 banger TJ (which has an iron head). So even your 51hp gain was with an aftermarket performance cam, a header, roller rockers, no exhaust, a custom tune, no accessories......need I continue? I need to go back and look what rpm they ran it too also.

But back to the practicality or even theory of how it improves cooling........

Here is the deal, I live in Las Vegas, it gets hot here. I have 2005 LJR that would see 238 in traffic in the summer, I put this head on a couple years ago and now only see 210 in traffic. Additionally the performance is night and day difference. I already had Banks headers, louvered hood, Banks cold air intake and HP tune.

Can't prove it was the head, because we didn't do any dyno testing but my butt dyno says wow.
 
I'm about 1/3 into my flush. Removed the thermostat, installed the Prestone backflush tee on the upper heater hose, flushed until clear with garden hose water, added Prestone Flush and drove it for a couple days.

That engine coolant drain plug looks to be a real PITA. How critical is it to remove and drain, and when exactly during the process should I remove it?
 
I'm about 1/3 into my flush. Removed the thermostat, installed the Prestone backflush tee on the upper heater hose, flushed until clear with garden hose water, added Prestone Flush and drove it for a couple days.

That engine coolant drain plug looks to be a real PITA. How critical is it to remove and drain, and when exactly during the process should I remove it?

Same folks say that drain plug is not really critical. All you need to remove the drain plug is one socket from Amazon. After you do it first time, it is simple.
In order to open it, you need an extension with Rachet and this square 8mm, push it between the cats to the side of the block and open it.
 
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Main reason why I use the drain plug is that I live in HOA area, and our HOA is like bunch of very angry Karens, so using the hose and flush until clean is not an option.
Cannot spill anything more than little bit.
The street drain goes into our lake, so nothing can be flushed there