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400 big cam Cummins

Posted By CSA Monday, February 25, 2019 4:30 PM
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CSA
 Posted Monday, February 25, 2019 4:30 PM
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I am looking for a AC Mount bracket for my 400 big cam Cummins. I need the flat steel plate that attaches the AC unit to the engine mount. I have this mount on the engine.http://forums.aths.org/Uploads/Images/6d975184-6a34-4a40-8544-e071.jpg
Geoff Weeks
 Posted Tuesday, February 26, 2019 1:55 PM
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What CPL of the Engine? I ask because all Big Cam I know have the multi rib waterpump belt, not the twin V belts that were common on the small cam.
Most A/C drives were set up by the end user (Truck mfg) so each will be different.
Do you know what compressor was used? It looks like it might have been a GM A-6
another issue is often the A/C is driven off it's own groove in front of the fan drive belts. You don't have the "extra" groove.
Your bracket looks similar to what IHC used, and is still available as of last summer when I bought one, however it is set up for a pulley drive you don't have.
Was yours set up for drive off one of the fan belts? That would make tensioning a problem, as you would have to tension the belt that goes to the fan alone 1st then the one that goes to both the fan and A/C.
More application info is needed.
Geoff Weeks
 Posted Wednesday, February 27, 2019 1:46 AM
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Could you have a "Diesel RE-Con" Magnum 400 small cam? These were Cummins Factory re built Small Cams updated with Big Cam externals and boosted to 400 HP.
You are also missing the support at the to top of the fan drive bracket that runs to rocker box/jake brake.
 fa102gi.png (33 views, 22.13 KB)
Wednesday, February 27, 2019 3:18 AM by Geoff Weeks
Geoff Weeks
 Posted Friday, March 01, 2019 5:24 AM
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http://forums.aths.org/Uploads/Images/094f1db1-4c56-4e68-97b7-d1c3.JPGHere is IHC's version. The bracket that bolts to the timing cover/block is slightly different, it doesn't bolt to the block behind/in front of the compressor, rather it bolts to the timing cover/acc drive and looks very similer. The 2nd piece is a "cradle" for the A-6 and it pivots in the same way as your bracket.
 CIMG3459.JPG (28 views, 1.67 MB)
 CIMG3460.JPG (39 views, 1.64 MB)
 CIMG3461.JPG (31 views, 1.61 MB)
Friday, March 01, 2019 5:27 AM by Geoff Weeks
Newto
 Posted 2 days ago @ 10:12 AM
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certainly is a Bitza Geoff!

Has Small Cam Accessory Drive pulley,Big Cam 2/3 cross bolt aftercooler,Midland Air Compressor which to me indicates International spec engine, no fan hub support bracket but the mount is the late model that support goes under the jake housing.....

I'd guess that you're right in saying its a Recon SC Magnum,not a Big Cam.

(Of course all of the above has absolutely nothing to do with getting an air conditioner bracket.......just saying')

Newto
2 days ago @ 10:13 AM by Newto
Geoff Weeks
 Posted 2 days ago @ 12:36 PM
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Air compressor is a Bendix TF 501, and yes I agree it is at least similar to IHC spec's. Although I have one that had the Holset compressor in an IHC and I believe it is original.
Original poster hasn't been back since he posted, so I don't think this is going anywhere.

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