Anybody mounted Viair 450H under hood? - JKowners.com : Jeep Wrangler JK Forum
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post #1 of 6 Old 01-04-2019, 08:47 PM Thread Starter
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Anybody mounted Viair 450H under hood?

450H is 1.5" longer than other models that fit Synergy PPM-4034 mount. If I extend the bracket will it fit in the same spot under the hood, or are there better mounting options? Open to buying a different bracket if need be.
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post #2 of 6 Old 01-08-2019, 10:03 AM
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Quote:
Originally Posted by RSHHD1 View Post
450H is 1.5" longer than other models that fit Synergy PPM-4034 mount. If I extend the bracket will it fit in the same spot under the hood, or are there better mounting options? Open to buying a different bracket if need be.
It fits - you just have to flip the stamped steel feet around to reach inward toward the holes in the bracket.

Keep in mind, that's a lot of weight cantilevered off the 2 bolts that hold your brake master cylinder in place (always made me nervous).

However, I ran that for a few years without failure. Here are some pics of the 450C and 400C mounted:

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<snip>

Recently pulled out my OBA setup to move some crap around to make room for an sPOD in the future.


And swapped out the Viair 450C for a 400C.

Smaller, lighter, and faster. It's not continuous duty like the 450, but the 400 should air up comfortably before shutting down.


When I first installed the Viair setup, I moved the plug on the front of this bracket down around the corner and away from the heat of the compressor.

Just pulled the steel bracket, drilled two holes, shot a little paint, and reinstalled.


SHOP TIP: cheap, disposable soft jaws are easy to fake out of aluminum angle.

Takes all the guilt out of thrashing 'em, because new ones are like a buck and 5 minutes away..


OBA setup back in.

It'll be a close race, but I think the sPOD will fit in there without re-making the copper coil. Everything else is out of the way.

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post #3 of 6 Old 01-09-2019, 02:54 PM Thread Starter
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Thanks, your setup looks clean. I thought about switching the mounts too. The Viair Q&A says not to do that, but I don't see why it would matter. I have the S-pod setup already, and the 450H unit is a little longer. I'll check it out and see how it clears.
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post #4 of 6 Old 01-09-2019, 10:27 PM
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To clarify: the 450C wasn't going to be in the way of the sPOD. I swapped to the 400C to make airing up tires faster. The 450 is slower and heavier than the 400C, but the continuous duty rating is nice.

I hit the thermal protection shutdown on the 400C while airing up on a hot day with a heat-soaked engine compartment (fresh off a long 4-lo section). That added ~15 minutes to airing up while waiting for the compressor to cool off .

I fixed that problem with a trick little fan setup:

. . . which has been awesome and I'm done fookin' around with my OBA setup





. . . for now
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post #5 of 6 Old 01-10-2019, 03:22 PM
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I'm not sure about the VIAR compressors but, I ran my ARB twin under my hood for awhile and it would always shut off because of getting too hot after about 3 tires (40"). Sometimes I would get all four, but then it would definitely shut off and I couldn't help my buddies air up. I moved it to the back of the Jeep (inside) and it does great now. Last time out we aired up 3 jeeps in a row with it. I made my own bracket and mounted it above the driver's side wheel well.

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post #6 of 6 Old 01-15-2019, 06:43 PM Thread Starter
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Yea Redrock, I came with the same spot. I've done a mockup with a couple revisions that will bolt into the fender well and use the 2 forward hard top mounting bolts. Ready to cut \ weld \ drill \ powdercoat, I think it will work out well. If I can figure it out I'll post pics when it's done...
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