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Unread 01-11-2010, 06:21 PM   #1
mmerlina
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Mounting the York AC compressor on 258

Hey folks, I've been gearing up to begin this OBA project and I've been collecting parts from all across the nation.. from Alaska to Indiana, all the way to some local yards here in Boston.

Anyhow, I found a stock AMC 258 A/C compressor bracket (very hard to find, hence Alaska being the closest one). I also found a large York 210 compressor.

My question is, am I missing anymore brackets before I start tearing things apart? I have attached photos of the bracket that I have and a picture I found online of it installed on a 258.

That small black piece of steel that bolts from the alternator to the bracket looks easy enough to fab. I'm wondering if there's any other bracketry that isn't so easy that is not visible in this photo?

Mainly I'm questioning where the adjustment for the belts is...

Thanks folks.

pict4693.jpg   dscn0610.jpg  
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Remanufactured 258, ARB lockers front & rear, 4.10 Yukon gears, 35x12.5" Super Swamper SSR's, Motorcraft 2100, 4.5" Rubicon Express Extreme-Duty lift, York 210 OBA, Big Daddy steering, Tatton rear CV driveshaft, Herculined interior, TJ flares, lots of body & upholstery work
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Unread 01-11-2010, 06:34 PM   #2
No_Bs
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You need the idler pulley and bracket, it is what adjusts the belt and it mounts on the two forward head studs. I'll see if I can find a picture quick. You can get it off of an AMC eagle with a saden compressor, it's the same, and easier to find.

Edit, quick google found this:

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Unread 01-11-2010, 07:05 PM   #3
mmerlina
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Hmm okay.. I started getting a little confused about the idler pulley because here on jedi.com's oba writeup he stated that he eventually ended up ditching the idler because the belts were snug enough...

.. but I also see that in your signature you basically have the same setup as I'm looking to get, the 258 with OBA.. you are using the idler?

On-Board Air - Mounting the Compressor

The result required a 49-5/8" v-belt (model 15490). The center of the belt originally had a little more play than I'd like, but a 49-1/8" (15485) belt just wasn't long enough. I made an idler pulley to keep tension on the belt once it stretched a little. Replacement belts that I bought seemed plenty tight by themselves, so I've since ditched the idler pulley. The mounting tabs can still be seen on my mounting bracket, though
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1986 Jeep CJ7 (photos)
Remanufactured 258, ARB lockers front & rear, 4.10 Yukon gears, 35x12.5" Super Swamper SSR's, Motorcraft 2100, 4.5" Rubicon Express Extreme-Duty lift, York 210 OBA, Big Daddy steering, Tatton rear CV driveshaft, Herculined interior, TJ flares, lots of body & upholstery work
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Unread 01-11-2010, 07:10 PM   #4
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That what I've got in mine. Out of a AMC concord.
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Unread 01-11-2010, 07:28 PM   #5
No_Bs
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Yeah, I do have it. I think I know what you are talking about. I've seen setups from Eagles with an idler down by the alternator, however, they also have the one I am talking about, that one is not needed. While on the subject, does anyone else have issues with the belt clearing the upper radiator hose? I wish I had pictures of my own, but I don't.
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Unread 01-11-2010, 07:36 PM   #6
mmerlina
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Hmm.. I've never seen that bracket over by the water pump on any of my searches all this time.. I wish there was a better angle on it, I'll search some more and focus more on that area.

What would that bracket be called? I'd prefer to get whatever I can scrape together for stock brackets, and then fab what I really have to..

I believe Kilby offers a bracket kit for this application, but I think most of their stuff is a bit high price. Where I'm not in a rush and don't mind spending time on stuff, I'll save my money.
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Remanufactured 258, ARB lockers front & rear, 4.10 Yukon gears, 35x12.5" Super Swamper SSR's, Motorcraft 2100, 4.5" Rubicon Express Extreme-Duty lift, York 210 OBA, Big Daddy steering, Tatton rear CV driveshaft, Herculined interior, TJ flares, lots of body & upholstery work
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Unread 01-11-2010, 07:37 PM   #7
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Quote:
Originally Posted by No_Bs View Post
.. While on the subject, does anyone else have issues with the belt clearing the upper radiator hose? I wish I had pictures of my own, but I don't.
Not if you get the right hose...
acheaterhose.jpg  
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Unread 01-11-2010, 07:45 PM   #8
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Quote:
Originally Posted by mmerlina View Post
Hmm.. I've never seen that bracket over by the water pump on any of my searches all this time.. I wish there was a better angle on it, I'll search some more and focus more on that area.

What would that bracket be called? I'd prefer to get whatever I can scrape together for stock brackets, and then fab what I really have to..

I believe Kilby offers a bracket kit for this application, but I think most of their stuff is a bit high price. Where I'm not in a rush and don't mind spending time on stuff, I'll save my money.
Maybe you just missed it. All the picts I've seen have the idler. Can't see how they rout it without it. Even the dealer installed ones.


Not a York but same pulleys and idlers for my york setup. Possibly the one by the alternator but it could hit the fan blades on the alternator if the belts were too new.
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Unread 01-11-2010, 07:52 PM   #9
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Quote:
Originally Posted by John Strenk View Post
Not if you get the right hose...
I looked everywhere for that hose when I did mine, and it was discontinued or not available everywhere I went. I'll try that part #, thanks.
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Unread 01-11-2010, 08:14 PM   #10
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Got mine at NAPA. That is a Goodyear part number
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Unread 01-11-2010, 08:30 PM   #11
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Hey John, you're absolutely right, I've always been so focused on the left side of the engine and how the compressor/alternator mounts, I never really paid much attention to the rest of the engine.

I've been all over the internet in search of the mounting bracket for the york. But I never came across any ads regarding idler pulleys to go along with the system. car-parts.com was a huge help in helping me find my bracket.

Should I call some people who have an AMC on their lot and see if they have those pulleys still bolted to the engine?
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1986 Jeep CJ7 (photos)
Remanufactured 258, ARB lockers front & rear, 4.10 Yukon gears, 35x12.5" Super Swamper SSR's, Motorcraft 2100, 4.5" Rubicon Express Extreme-Duty lift, York 210 OBA, Big Daddy steering, Tatton rear CV driveshaft, Herculined interior, TJ flares, lots of body & upholstery work
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Unread 01-11-2010, 08:35 PM   #12
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Remanufactured 258, ARB lockers front & rear, 4.10 Yukon gears, 35x12.5" Super Swamper SSR's, Motorcraft 2100, 4.5" Rubicon Express Extreme-Duty lift, York 210 OBA, Big Daddy steering, Tatton rear CV driveshaft, Herculined interior, TJ flares, lots of body & upholstery work
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Unread 01-11-2010, 08:43 PM   #13
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Quote:
Originally Posted by mmerlina View Post
Should I call some people who have an AMC on their lot and see if they have those pulleys still bolted to the engine?
Yes, most AMC cars, especially late 80's will have A/C and this bracket.
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Unread 01-11-2010, 10:10 PM   #14
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Back on the east, out here they are a rotary compressor. If I do find a york it's setup like the diagram from Mike. That same bracket will work for a serpentine setup also, with the correct clutch. The belts are close, but on a serpentine you the original belt.
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Unread 01-12-2010, 03:16 AM   #15
John Strenk
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With the serpentine belt I've seen were they use a "Dummy" compressor if you don't have AC.


Before you sharp guys pick it out, it looks like the belt is routed wrong on this picture.

It seems to been used on 86 CJ's a lot.
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