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Vent in the engine deck, stock??
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cmonSTART Premium Member
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PostPosted: Thu Mar 05, 2015 1:37 pm    Post subject: Vent in the engine deck, stock?? Reply with quote

Hi Folks,

Is this round vent in the engine deck stock, or something a PO added? It's in the rear left corner, behind the spare tire well.

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Bleyseng
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PostPosted: Thu Mar 05, 2015 1:43 pm    Post subject: Reply with quote

What's in the engine compartment a gas heater?
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PostPosted: Thu Mar 05, 2015 1:51 pm    Post subject: Reply with quote

No, it has a BA6 under the belly, but the only thing in the engine compartment is the engine itself..

Actually, the entire stock heat system is missing.

The rear defroster is INOP, so I was thinking this might be an attempt to defog the rear window.
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Bleyseng
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PostPosted: Thu Mar 05, 2015 2:22 pm    Post subject: Reply with quote

Just a weird hack then. Try to source all the stock pieces for the stock heating system as it does work pretty well when complete. Especially hooked upto a BN6 gas heater!
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PostPosted: Thu Mar 05, 2015 2:48 pm    Post subject: Reply with quote

I'll bet it was an intake for a recirculating heat system that was installed at one time.
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1967250s
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PostPosted: Thu Mar 05, 2015 3:04 pm    Post subject: Reply with quote

Yeah, bet it hooked to a tube going to the heater fan. Not a bad idea really. Just have to make sure the rest of the system doesn't suck in any other fumes.
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PostPosted: Thu Mar 05, 2015 3:06 pm    Post subject: Reply with quote

kreemoweet wrote:
I'll bet it was an intake for a recirculating heat system that was installed at one time.


That is where I am cutting the hole for mine.There is a commonly available flange fitting (it's actually a outdoor drain) That makes a clean job of transitioning to 3 or 4" flex duct. You just rig it in the winter to recirculate air from up front at idle. cap it in the summer.
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PostPosted: Thu Mar 05, 2015 4:19 pm    Post subject: Reply with quote

Great, thanks guys. I'm going to close it off for now.

I'm using the BA6 (refurbished) as a stand-alone heat system. It's surprising how much heat it actually cranks out, but it would do better with a bigger distribution fan. I also have to close off air leaks around the cabin - I feel a cold draft coming from the back of the bus while at speed. Toasty warm around the town, though!
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PostPosted: Thu Mar 05, 2015 6:15 pm    Post subject: Reply with quote

The stock BN6 air inlet is behind the rear seat. Isn't that where yours is?
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PostPosted: Thu Mar 05, 2015 6:35 pm    Post subject: Reply with quote

Yup, passenger side.
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PostPosted: Thu Mar 05, 2015 6:52 pm    Post subject: Reply with quote

cmonSTART wrote:
I feel a cold draft coming from the back of the bus while at speed. Toasty warm around the town, though!

I'll bet you do, if that isn't connected to the booster fan the pressure in the engine compartment would make for an icy gale blowing up out of there any time the bus is in motion.
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PostPosted: Thu Mar 05, 2015 7:05 pm    Post subject: Reply with quote

Here is a pic of the stock fresh air intake. Only the green part is inside the cabin.
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PostPosted: Sat Mar 07, 2015 9:46 am    Post subject: Reply with quote

Update: I removed the vent today and sure enough, there was a remnant of a PVC flex duct attached to it. It probably was a heat recirculating system like you said. I added some duct tape to the equation to cover it and took a test ride - very very much better! I would say it cut down on the icy breeze about 75%. The bus is much warmer now - even on a single digit morning.

Thanks folks!
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Tcash
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PostPosted: Sat Mar 07, 2015 12:39 pm    Post subject: Reply with quote

Did you happen to take a picture of it when it was out?
Thanks
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PostPosted: Sat Mar 07, 2015 1:32 pm    Post subject: Reply with quote

in your first pic, it seems to have a cover plate on it. So the draft was coming through this?
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PostPosted: Sat Mar 07, 2015 2:25 pm    Post subject: Reply with quote

There's no cover on it.. it's just an open, screened hole.

I didn't take any photos while it was out, but if you think it's worthwhile I don't mind doing so.
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PostPosted: Sat Mar 07, 2015 2:39 pm    Post subject: Reply with quote

ah so. Screened.
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