Home » Public Forums » GMCnet » My 1976 Palm Beach Project
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| Re: [GMCnet] My 1976 Palm Beach Project [message #284615 is a reply to message #283851] |
Tue, 11 August 2015 20:07   |
Justin Brady
Messages: 769
Registered: April 2015
Location: Bell Buckle, TN
Karma: 11
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Quick question for those still following along.
While hooking up my chariot gauge to vacuum I noticed that I have about 20in hg at idle coming from the rear vacuum port on the carb.
From the front port (the one that goes to the front of the engine then back to the vacuum advance etc) I only have about 5 in hg.
Does this sound right to anyone? It runs really strong but I'm not sure if the vacuum discrepancy is normal or what?
Justin Brady
http://www.thegmcrv.com/
1976 Palm Beach 455
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| Re: [GMCnet] My 1976 Palm Beach Project [message #284619 is a reply to message #284615] |
Tue, 11 August 2015 20:20 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Justin,
What you're seeing is completely normal. The front port is into the throat
of the carb ABOVE the butterfly. As soon as the butterfly is tipped open,
that port will see the same vacuum as the rear port. The front is called
"ported vacuum", and it is normal for the distributor's vacuum advance to
be connected there. There are those who argue for using manifold
(non-ported) vacuum for that purpose, but here are ignition timing
consequences to that change from OEM.
My one question is about your statement "back to the vacuum advance, ETC".
There should be no ETC on that hose.
Ken H.
On Tue, Aug 11, 2015 at 9:07 PM, Justin Brady wrote:
> Quick question for those still following along.
> While hooking up my chariot gauge to vacuum I noticed that I have about
> 20in hg at idle coming from the rear vacuum port on the carb.
> From the front port (the one that goes to the front of the engine then
> back to the vacuum advance etc) I only have about 5 in hg.
>
> Does this sound right to anyone? It runs really strong but I'm not sure if
> the vacuum discrepancy is normal or what?
> --
> 1976 Palm Beach 455
>
> _______________________________________________
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: My 1976 Palm Beach Project [message #284638 is a reply to message #281079] |
Wed, 12 August 2015 05:53 |
kerry pinkerton
Messages: 2565
Registered: July 2012
Location: Harvest, Al
Karma: 15
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Really good stuff. If you could find someone to make a plastic copy of that panel it would probably sell. I've thought about doing on in aluminum but it would be too expensive to recover any costs.
Btw, would you put a first name in your signature. I can't remember crap any more.
Kerry Pinkerton - North Alabama
Had 5 over the years. Currently have a '06 Fleetwood Discovery 39L
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| Re: [GMCnet] My 1976 Palm Beach Project [message #284663 is a reply to message #284638] |
Wed, 12 August 2015 09:15 |
Mr ERFisher
Messages: 7117
Registered: August 2005
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On Wednesday, August 12, 2015, Kerry Pinkerton wrote:
> Really good stuff. If you could find someone to make a plastic copy of
> that panel it would probably sell. I've thought about doing on in aluminum
> but it would be too expensive to recover any costs.
>
> Btw, would you put a first name in your signature. I can't remember crap
> any more.
Speaking of that
How about update and listing the parts you will have at GMCWS
http://www.bdub.net/pinkerton/
AND ADD THE LINK TO YOUR TAG LINE .
Erf
> --
> Kerry Pinkerton
>
> North Alabama
>
> 77 Eleganza II, 403CI, Manny Brakes, 1 ton, tranny, lots of aluminum
> goodies.
>
> Also a 76 Eleganza to be re-bodied as an Art Deco car hauler
>
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--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
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| Re: [GMCnet] My 1976 Palm Beach Project [message #284693 is a reply to message #284663] |
Wed, 12 August 2015 13:22 |
Justin Brady
Messages: 769
Registered: April 2015
Location: Bell Buckle, TN
Karma: 11
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Ken,
Thanks! That's what I figured but wanted to be sure before I went any further under false assumptions.
Kerry and Wally,
Thanks for the kind words, rest assured I will continue posting. We've been hard at work every night this week.
The door panels were taken to an upholsterer, along with the dash. I tried and tried but without sewing there's just no hope of a good looking panel, so off to the professionals 
Here's the dash before getting upholstered.
I have started ordering parts to get this thing rolling. In no particular order I've acquired:
PD4560 All on one 60 amp converter. I blew up the old(new) one so while looking fr a replacement I stumbled across this beauty. For roughtly the same cost as the PD converter you get a full 50A AC panel along with a DC panel, AND it's all in one unit. I got it for 250 shipped Amazon Prime (like everything I buy) through their warehouse deals program.
http://www.progressivedyn.com/all_in_one_pd4500_1.html
Next up I wanted to upgrade the air system. After disassembling the dash I got fed up with the way it's wired with the auto level etc, so I'll be bypassing all of that and wiring fresh. I'll have up and down buttons in the dash and the dual needle gauge to tell me the pressure in the bags.
For this I got a Viair 444C compressor (It's a boss) on ebay for 135 shipped.
Viair 2.5 Gallon tank. I know this is way overkill, but I want to be able to inflate tires and run air tools if I so desire, plus it will be really nice to be able to raise the coach quickly, instead of waiting several minutes for it to move.
All new 1/4" Air line and solid brass fittings. (Amazon prime also)
All this should be here friday, so hopefully I'll have install photos this weekend.
After all that buying I needed to do some work. So we proceeded to rip the interior all the way out down to bare walls!
All that wooden rotten crappy particle board went straight to the burn pile.
The bathroom was a bear to remove. Ended up smashing it with a hammer and taking it out in pieces.
And here's how she currently sits:
Next Up I'll be patching the holes for the refrigerator vent and the stove vent and then removing all the insulation to re insulate to hopefully help heat and cool this beast.
Justin Brady
http://www.thegmcrv.com/
1976 Palm Beach 455
[Updated on: Tue, 19 January 2016 09:26] Report message to a moderator |
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| Re: [GMCnet] My 1976 Palm Beach Project [message #284695 is a reply to message #284693] |
Wed, 12 August 2015 13:29 |
Justin Brady
Messages: 769
Registered: April 2015
Location: Bell Buckle, TN
Karma: 11
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On a semi related note:
I am going to be redoing all of the lighting in the coach with 4W LED flush mount lights.
I will be ordering them directly from the manufacturer. I'm going to snag 25 for myself, but if anyone else wants to jump in I can make the order bigger.
They'd be 5 bucks a piece. 40,000 hr life (so says the manufacturer)
They work perfectly in the ceiling, just hole saw a 3.5" hole and pop it into place:
They are also an almost perfect fit for the old ugly ones in the dome lights in the passenger compartment. Again I drilled a 3.5" hole and popped it in. 2 minute install. They are very bright and a pleasant 3000K temperature (Warm white).
I'll also be putting them under counter, so they will work for that as well with a bit more work to recess them in.
So if anyone wants to jump on to grab a few just send me a message. I'll be ordering early next week.
Justin Brady
http://www.thegmcrv.com/
1976 Palm Beach 455
[Updated on: Tue, 19 January 2016 09:27] Report message to a moderator |
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| Re: [GMCnet] My 1976 Palm Beach Project [message #284702 is a reply to message #284695] |
Wed, 12 August 2015 15:06 |
Justin Brady
Messages: 769
Registered: April 2015
Location: Bell Buckle, TN
Karma: 11
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Senior Member |
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Another question since I'm thinking about it.
Yesterday I ran the onan for about 3 hours (need AC here in the south!)
It ran perfectly while extended out of the enclosure.
After running great I slid it into the enclosure and it died about 10 minutes later. I pulled it out again and man it was hot!
So it works fine outside, but once it's in the enclosure it overheated pretty quickly.
Any ideas? I know this isn't normal, but I don't see any obvious reason for it
Justin Brady
http://www.thegmcrv.com/
1976 Palm Beach 455
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| Re: My 1976 Palm Beach Project [message #284981 is a reply to message #284953] |
Sat, 15 August 2015 12:03 |
Justin Brady
Messages: 769
Registered: April 2015
Location: Bell Buckle, TN
Karma: 11
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Senior Member |
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Matt,
I have not crossed that hurdle yet.
I plan to do the same with the temp sensors (I bought an AC deco sensor for trans temp, I figure why double up on gauges when I have the temp on the dash already, and I like to know my trans temp) so I'll use a set of known temps to measure it and go from there.
For the oil pressure I'm not sure yet. I have a couple of analog oil pressure gauges sitting around, so I'll likely hook one of those up at the same time and tweak the numbers in the chariot gauge app until they read the same values. I may have to use a compressor and known air pressure to do this one, haven't given it enough thought yet.
And for the wideband, there are published values for the Bosch sensor that I plan to use, so that one should be pretty simple.
So far I'll ive done is hook up the voltage and the vacuum gauge, and both work just fine.
Justin Brady
http://www.thegmcrv.com/
1976 Palm Beach 455
[Updated on: Tue, 19 January 2016 09:28] Report message to a moderator |
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| Re: [GMCnet] My 1976 Palm Beach Project [message #285045 is a reply to message #284981] |
Sat, 15 August 2015 18:17 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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OK, You Kids should know that you're making me feel OLD! A few years back
I sort of figured one day I'd do an electronic dash like Y'All are working
on. Fact is, though, I'm now too obsolete to even think about trying it.
Right now, I've got most of my test equipment, much of it my own designs
and fabrication, from the mid-'70's, packed to take to my grandsons, hoping
I can teach them some fundamentals with it.
I will say that you're on the right track with your tests, IMHO, since
those techniques are exactly how I calibrated the analog gauges for my new
dash. For temperature senders, I made a mounting jig for 8 senders, with a
stirrer, to fit on a pot full of liquid; a switch lets me run through the 8
quickly to record the temps and resistances.
I'll be following along, enjoying your competence and enthusiasm, so keep
us all posted!
Thanks,
Ken H.
Americus, GA
'76 X-Birchaven w/Cad500/Howell EFI & EBL,
Manny Brakes & 1-Ton, etc., etc.
www.gmcwipersetc.com
On Sat, Aug 15, 2015 at 1:03 PM, Justin Brady wrote:
> Matt,
> I have not crossed that hurdle yet.
> I plan to do the same with the temp sensors (I bought an AC deco sensor
> for trans temp, I figure why double up on gauges when I have the temp on the
> dash already, and I like to know my trans temp) so I'll use a set of known
> temps to measure it and go from there.
> For the oil pressure I'm not sure yet. I have a couple of analog oil
> pressure gauges sitting around, so I'll likely hook one of those up at the
> same
> time and tweak the numbers in the chariot gauge app until they read the
> same values. I may have to use a compressor and known air pressure to do
> this
> one, haven't given it enough thought yet.
> And for the wideband, there are published values for the Bosch sensor that
> I plan to use, so that one should be pretty simple.
>
> So far I'll ive done is hook up the voltage and the vacuum gauge, and both
> work just fine.
>
> http://i67.photobucket.com/albums/h298/jbrady2/EDB343CC-B39F-46BF-B836-6D97E590B677_zpsjhsbbb9r.mp4
> --
> Justin Brady
> 1976 Palm Beach 455
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: My 1976 Palm Beach Project [message #285107 is a reply to message #285051] |
Sun, 16 August 2015 10:46 |
Justin Brady
Messages: 769
Registered: April 2015
Location: Bell Buckle, TN
Karma: 11
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Senior Member |
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Ken You'd be surprised how simple most of this is. Compared to doing mechanical work the electrical side of it is really simple, it can really all be done with a basic knowledge of how stuff works and a thorough understanding of how to research ha!
I appreciate the compliments, I'm excited to do some stuff that I haven't seen in the gmc world yet.
Matt I'll find you the part number but I haven't tested it yet and am unsure of if it will work. I'll keep you updated.
A bicycle pump could work you'd just need something to hold the air, I think it would be tough to keep it steady. I'll probably air my tank down slowly with a blow gun and record the values as the pressure goes down.
Justin Brady
http://www.thegmcrv.com/
1976 Palm Beach 455
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| Re: My 1976 Palm Beach Project [message #285240 is a reply to message #281079] |
Mon, 17 August 2015 15:31 |
kerry pinkerton
Messages: 2565
Registered: July 2012
Location: Harvest, Al
Karma: 15
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Senior Member |
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So you're not going to have automatic leveling but set ride height based on PSI in the bag?
Kerry Pinkerton - North Alabama
Had 5 over the years. Currently have a '06 Fleetwood Discovery 39L
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