190XT intercooler?

100 psi intake boost  (2 stacked turbos with 3 inch inlet) is possible on a completely stock cylinder head, with the exception of stronger valve springs to prevent valve float at 4500 RPM's.  In the NTPA Heavy SSDiesel division with 3 and 4 turbos, they run between 250 and 300 psi intake boost.

When I was thinking of this question originally, I was thinking of a intercooler like is on my Ram turbo diesel or my Talon turbo car. It looks like a radiator that goes in front of the main radiator. It cools the incoming air without the aid of lines routing thru the cooling system. I had never seen a 7020 intercooler in person until after I made the post. Maybe a tractor version of this is not possible due to fact that a tractor is at such a slow ground speed. This has been an interesting post.

AC720Man wrote: When I was thinking of this question originally, I was thinking of a intercooler like is on my Ram turbo diesel or my Talon turbo car. It looks like a radiator that goes in front of the main radiator. It cools the incoming air without the aid of lines routing thru the cooling system. I had never seen a 7020 intercooler in person until after I made the post. Maybe a tractor version of this is not possible due to fact that a tractor is at such a slow ground speed. This has been an interesting post.

The intercooler in front of a radiator is referred to as an air-to-air type.

Older tractors usually had a small radiator coil inserted inside their air intake manifold. These are usually referred to as "aftercooler" in that the 180-190 degree radiator coolant circulates thru the aftercooler's small coil inside the intake.

Under a load, a tractor's turbo can heat intake boost air from outside air temp (75 degrees) to 300-500 degrees. So the 190 degree coolant coil helps cool the turbos compressed air.
Air-to-air intercooler can help even though tractor is not traveling fast down a freeway like a truck, if the tractor's engine fan speed is faster. But as mentioned earlier by TBran? DrAllis?, your tractor's fan belts & fan pulleys can wear out faster in this scenario.

Edited by AC7060IL - 09 Jan 2018 at 2:43pm

I have not been around a 433 intercooled engine,ours is just a turbo,but how does that system work, air or water?

FREEDGUY wrote: I have not been around a 433 intercooled engine,ours is just a turbo,but how does that system work, air or water?

The 433I (I for Intercooled) used in Gleaner F2-F3 have their "aftercooler" radiator coolant coil inserted into their intake manifold. Although I've never owned an AC6080 tractor or AC 880 cotton picker, I believe their 433I is setup the same way.
If you research older diesels, the two terms "aftercooler" & "intercooler" seem to be used freely to describe cooling intake air after the turbo.
In some older diesels, a turbo might compress incoming air initially, that heated compressed turbo air would then be followed by an intercooler ("inter" or in between) to cool the air, which may then run thru a supercharger(blower) before it reached an aftercooler ("after" series of compressions), then taken into engine cylinders.
I believe some older WWII planes (P51, P38, Corsairs, etc) used a supercharger or turbo-supercharger combo to compress their engine's thinner high altitude air. Here's a weblink for a good long read about WWII warbird's super chargers & turbos.
https://www.pacificaviationmuseum.org/pearl-harbor-blog/superchargers-and-turbochargers/

AC720Man wrote: Thanks for the great explanation AC7060IL.

You're very welcome. After discussing some of these decade diesel improvements (1960's Turbo additions, 1970's aftercooler additions, & 1990's air-to-air intercooler additions), it always makes me appreciate, even more, the older 1940-1950 non-turbo natural air diesel's lugging power designs. My Dad's 1952 Cat D4 dozer developed 48 hp (drawbar hp) from a 350cu in 4 cyl diesel. It's power had a pushing weigh of 10,000lbs, 100% of its weight. I think the older AC dozers performed equally well, too.

Edited by AC7060IL - 12 Jan 2018 at 2:20pm

I've got a few things here to discuss:   Mr. Tornado 8070...  installing an intercooler (a 7020 intercooler?? or something else?) on your 8010 that had 111 HP should not have dropped the HP to 95. It should have remained the same OR slightly increased. You have an air leak or lack of fuel delivery or #1 fuel versus #2 fuel, or a different dyno on a different air temp day....something's different. A properly functioning coolant to intake air manifold (intercooler) will not cause a drop in HP. No way.  With your stock 8010 producing 111 HP on a 90 degree day, the exhaust temp might have been 1250 degrees. (This is a guess, but just stay with me) . The addition of a properly functioning factory (7020) intercooler allows the injection pump delivery to be increased approximately 3 quarts per hr for 123 HP and the same 1250 degree exhaust temperature. Controlling the intake air temp keeps the exhaust temps in an acceptable range for a desired engine life. When fuel delivery is increased, turbo boost goes up creating more intake air heat. The exhaust temps will also rise accordingly, taking them to a level that is unacceptable for desired engine life. The intercooler brings down the intake and exhaust temps to a more reasonable figure.  If you go to the Nebraska Test data, some interesting things can be found. A 1974 AC 7060 P.D. makes 161.51 HP and burns 10.179 GPH of fuel. A 1977 AC 7045 P.D. makes 146.18 HP and burns 10.133 GPH. What is the difference between these engines???  The factory coolant to intake air intercooler. This is a 15 HP difference  !!!!  Now, I should disclose that the 7060 would have had a slightly smaller transmission pump, so let's say there's only a 13 HP gain between the two engines.  Need more proof?? The same two tractors now being tested at a reduced load. The 7060 @ 143 HP used 9.333 GPH. The 7045 @ 130 HP used 9.365 GPH !!!! This will give you something to think about.  Modern day air-to-air after-coolers are more efficient due to the ambient temps are way less than 180 degree coolant temps. Higher boost numbers are the norm because of more efficient turbos and emissions specs have to be met.  Tbran's reference to a cooling system being maxxed out was for the 190XT @100 HP and he had added a 6 blade fan (instead of 5 blades) to help out the cooling system performance. The negative to the extra fan blade is more belt power required to spin it, and this takes a bit more engine HP too. That's all I've got for now.

And yes it was a factory 7020 intercooler. If you actual knew me you would know I don’t have cobbled up on my Farm.