Charge Air Cooler:
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Construction and other equipment
Forum Description: everything else with orange (or yellow) paint
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=197916
Printed Date: 23 Nov 2024 at 1:38pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Charge Air Cooler:
Posted By: Codger
Subject: Charge Air Cooler:
Date Posted: 27 Oct 2023 at 9:44am
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My 11-B tractor is turbocharged but not inter, or aftercooled. Injection pump is fresh and all filters are new. No problems at all but have room for a charge air cooler in back of the grille on a swing mount for cleaning, or can mount a water to air coil onto the engine. Reason for my question is tractor has great power and balance as is but I'm kinda wondering if this would be any kind of improvement? I've seen this series of engine produce well over the power output it currently makes and being a "gearhead" from days gone by sets me off to wandering if this is feasible. Cooler, denser air input is always good whether you dump more fuel to the engine or not, is my thinking. ------------- That's All Folks! |
Replies:
Posted By: DrAllis
Date Posted: 28 Oct 2023 at 9:42pm
| I think you'll find that it probably won't increase the HP any, unless you also increase the fuel delivery too. Now, if your engine is a bit overfueled already, it probably will add some HP. I've always felt the inter or after cooling was when exhaust temps were getting too high, that was the next step to keeping the engine together heat wise. I do know when an inter/after water type cooler is added to a cooling system, the radiator core gets thicker (4 rows of tubes goes to 5 rows of tubes) to get rid of the extra heat picked up from the water cooled intake manifold. This info is specific to a 7030/40 to 7050/60 farm tractor engine application. |
Posted By: Codger
Date Posted: 28 Oct 2023 at 10:02pm
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I was told the fuel delivery was set to factory settings and when the pump was rebuilt recently, those settings were retained. By the books this should be about 140 flywheel horsepower. These engines develop well over 200 horsepower in other applications such as wheel loaders, but the way the dozer performs in it's stock trim, I don't see any reason to increase the power. Parts are just too difficult to acquire to wreck them through abuse. I'm kinda wondering about lengthening the service life of the engine. It will do just fine in my tenure but wondering if the charge air cooling would provide any benefit from a purely service life extension point of view. It runs what I would consider damned near perfect and doesn't miss a beat along with starting very easily. Don't want to hurt it in any way; but will use it probably to limit. ------------- That's All Folks! |
Posted By: DrAllis
Date Posted: 28 Oct 2023 at 10:18pm
| If that's the 516 engine, they had it at 270 flywheel HP in the N-7 and R-7 Gleaner combines. Never heard anything bad about them, in fact usually all good. They were intercooled and had a P-series Robert Bosch in-line injection pump on them. Turbo was same as a Mack truck of the day, a TV-77 Air-Research which worked good on D-21 pullers with EXTRA fuel and big injector tips !!! |
Posted By: Codger
Date Posted: 29 Oct 2023 at 7:03am
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Yes, this is the 516 engine or 11000 Mk. II as referenced in the manual. I've looked in different manuals I have on the engine series and there are differences to the injection pump drives and seemingly front timing covers from what I have which is a "DC" Roosa-Master pump. The fuel shop guy tells me the injection pump and nozzles are easy to upgrade for more fuel, but again I don't want to shorten the service life of the engine or parts on the tractor; just too difficult to find replacements to unnecessarily expend. I've not delved into the numbers but the turbocharger installed is embossed T04 and is physically small in compared to some of my trucks. It does have a nice "whine" through the exhaust however. Never really being around anything AC except for track type tractors and a small amount of wheel loaders many years ago, I hadn't realized the engine series was used so broadly. I know where there are a couple of combines that are worn out so may pursue one of these for the engine which I believe still runs. I really would like to have a spare engine for parts running or not.  ------------- That's All Folks! |
Posted By: SteveM C/IL
Date Posted: 30 Oct 2023 at 7:23am
| My brother had a 71 11B.It had a P pump. It would do more work than a D6C of that time. The 2-speed PS had better suited ground speed. |
Posted By: Codger
Date Posted: 30 Oct 2023 at 7:40am
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I'll have this one back down in your area in the spring doing a couple jobs for family. Wanting to convert about 12 acres of overgrowth into hay or something useful yet still retain the bordering treeline. Very limited access to the back area now so going to punch one through.
------------- That's All Folks! |