What year is best?
#12
What's the difference in materials, I've never heard of that before? I was unaware of that.
#13
The design is better in my opinion. If it were not why would the bulletproof "improved" egr cooler replicate it? It has less surface area. Fewer welds and less bends to fatigue. It dosent abosrb as much heat as you stated meaning the is less potential metal fatigue. Comparitively the round will out flow the square cooler. This is not the issue though about effectiveness of the heat transfer though since most of us are less concerned with hugging trees and more concerned having a leak free coolant system. The consensus comparing the two coolers is that the round cooler is better. The consensus from people that I know that work on them is that they rarely if ever see a bad round cooler. Yes the production number was less being as they made that style for 1yr vs the square for 4yrs.
#14
The design is better in my opinion. If it were not why would the bulletproof "improved" egr cooler replicate it? It has less surface area. Fewer welds and less bends to fatigue. It dosent abosrb as much heat as you stated meaning the is less potential metal fatigue. Comparitively the round will out flow the square cooler. This is not the issue though about effectiveness of the heat transfer though since most of us are less concerned with hugging trees and more concerned having a leak free coolant system. The consensus comparing the two coolers is that the round cooler is better. The consensus from people that I know that work on them is that they rarely if ever see a bad round cooler. Yes the production number was less being as they made that style for 1yr vs the square for 4yrs.
I still dont get where the tree hugging part comes in? Cooling efficiency is a good thing. If it cools better, then that means the coolant is as hot and failure is less likely...
#15
Maybe you need to look past the out side.... The round style incorporates round tubes where gasses pass for the heat exchange. The square coolers use a radiator style heat exchanger. This is what I'm refering to. The round and square cooler from the factory are 2 completely different designs out side and in. Bullet proof uses the round tube design and claims they use a heavier gauge stainless than factory. Bullet proof uses this design in the round cooler and retrofits this design to the square cooler.
#16
Maybe you need to look past the out side.... The round style incorporates round tubes where gasses pass for the heat exchange. The square coolers use a radiator style heat exchanger. This is what I'm refering to. The round and square cooler from the factory are 2 completely different designs out side and in. Bullet proof uses the round tube design and claims they use a heavier gauge stainless than factory. Bullet proof uses this design in the round cooler and retrofits this design to the square cooler.
#17
Well I've had both the round and square egr coolers in my truck, the curent one which has FAILED is the round one, the last time the truck was in the shop for an egr r&r the dealer installed a round one saying "that it was an improved design" and that failure rates where "almost nil"? well he was wrong it's been in there for about two years now and it's doing the same thing as the first one did .... LEAK...so it's going into my scrap metal pile just as soon as I get it out of there.
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