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Now I understand 6.5L cooling... thanks Heath!

GM Guy

Manual Trans. 2WD Enthusiast
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I read the latest issue of maxxtorque today, and wow, that is a great article Heath wrote on the 6.5L cooling system. It explains WHY his is better, and why he used each piece in his kit. It is a simple but explanatory article.

I now know that all of our 6.5L diesels will be getting the Heath kit and no other.
 
It was a good article.

I am totally disappointed that the magazine is now black and white printing. Not what I paid for. I paid to have something to hold onto that I would want to keep.
 
That was a good article! I have no idea what kind of cooling upgrades is in my truck but, it has never even come close to overheating.
 
That was a good article! I have no idea what kind of cooling upgrades is in my truck but, it has never even come close to overheating.

Lol, here is another quote from you on another thread :)

"I purchased my truck a year ago or so and have put a entire 2,000 miles on it. It is one of the best driving trucks I have ever owned. I will not get rid of it ever!"

I'm sure you're dying to put more miles on the rig!!!

Just having fun bro :):thumbsup:
 
Anyone care to paraphrase or summarize the article for those who didn't receive it?

-Rob :)
 
It was a good article.

I am totally disappointed that the magazine is now black and white printing. Not what I paid for. I paid to have something to hold onto that I would want to keep.


I agree.

Also, aren't they shooting themselves in the foot putting the entire mag online? shouldn't they put in an occasional article on the website? I would think one article of lube notes, and one only would get enough interest to get more subs. give a little, not all!
 
i wish he'd do some exhaustive lly duramax testing to help us guys out:) good write up. i now have something to recomend to a buddy.
 
I agree.

Also, aren't they shooting themselves in the foot putting the entire mag online? shouldn't they put in an occasional article on the website? I would think one article of lube notes, and one only would get enough interest to get more subs. give a little, not all!

shhh dont tell anyone:mad2:
 
I'm sure the more people who read it whether online or in magazine form makes their advertising more valuable.
 
I agree.

Also, aren't they shooting themselves in the foot putting the entire mag online? shouldn't they put in an occasional article on the website? I would think one article of lube notes, and one only would get enough interest to get more subs. give a little, not all!

Probably not, the other option was to shut the mag down due to funding, and lose all advertisers... THis way, they keep their sponsers, and the mag. Win/Win, just stinks reading a magazine on a computer IMO.
 
What's really bad is the restricted coolant flow on the turbo-side of the engine, as if that 650*avg heat radiation into that side of the engine wasn't bad enuff, in itself - the fix is in - the fix is good - get'er done, folks - don't even leave home without it...............
 
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GMCTD what restriction is in the turbo side head? I thought the heads were symetrical sort of????.

I believe the flow balance is mostly from the water pump turbulence??? and port/passages sizes being equal? Which is a little baffling when one pump could have so much better flow balance vs another. As the inlet and outlet are the same. One has to be slightly different flowrate or a flatter flowrate curve or something. Maybe a "smoother" bypass mechanism or ?
 
Heath 6.5TC cooling writeup

This is some good reading. My guess on the imbalance of GPM left to right may be due to the clockwise rotation of the impeller, perhaps. The coolant sees the driver's side bank of cylinders first maybe?

The '93 I just bought may have been the victim of a cracked block or head dumping coolant into the crankcase thus taking out the rotating assembly-(bought it with a known engine problem). Haven't turned any wrenches on it yet.

I need to post a video of this thing making a racket on youtube for you guys to see.
 
The passages are shaped such that the left bank gets coolant from the bottom half of the wp, the right bank from the top half of the wp - the pump passages are equal except that the inlet is also on the bottom half - the article mentioned an orifice, iirc
 
None that I know of, Schiker - I was referring to the unbalanced flow doubly affecting the passenger side of the block due to the additional heat of the turbine - noone prolly would have noticed if the reduced flow had been to the cooler driver's side - I'd like to see one of the new service replacement pumps, dissect, analyze and compare it - personally, if I was still into the 6.5, I'd shoot for the electric fan clutch that GM uses on several other models - larger versions are used on Cummins, IH, etc - would allow full control from the 'stat and the driver's seat
 
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