Home » Public Forums » GMCnet » [GMCnet] My 1976 Palm Beach Project
| [GMCnet] My 1976 Palm Beach Project [message #320317] |
Wed, 12 July 2017 09:51  |
glwgmc
Messages: 1014
Registered: June 2004
Karma: 10
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Senior Member |
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Hi Justin,
Congrats on your marriage!
Glad you ditched the mechanical pump and engine compartment fuel lines. Watch out for the fuel selector valve as it is another known failure point. Better in my mind to draw directly from one of the tanks (I like the rear/main) with the electric pump to push fuel to the Fuel Command Center. That will provide access to around 42 gallons, way more driving than I ever do in one stretch. My process is to fill the tanks, drive for 200-250 miles and stop to refill and walk around a bit. No matter how much steady up hill driving you do there still will be adequate fuel from one tank to do 250 to 300 miles. Steady down hill driving will take care of itself. If you really want access to all 50 gallons and/or reduncancy, put on two electric fuel pumps with check valves and merge the lines forward of the pumps. Use the tank selector switch to power a normally on relay with the normally on line going to the pump on the rear/main tank and the normally off line going to the pump on the forward/reserve tank. Mount both pumps and the relay outside the frame rails where it is cooler and easy to access.
Jerry
Jerry Work
The Dovetail Joint
Fine furniture designed and hand crafted in the 1907 former Masonic Temple building in historic Kerby, OR
glwork@mac.com
http://jerrywork.com
=============
Message: 12
Date: Tue, 11 Jul 2017 19:36:15 -0600
From: Justin Brady
To: gmclist@list.gmcnet.org
Subject: Re: [GMCnet] My 1976 Palm Beach Project
Message-ID:
Content-Type: text/plain; charset="utf-8"
Quick update.
Were 95% finished and driving it to Wyoming to get married.
The first day was awful, mostly due to vapor lock (that my previous fix only helped postpone didn't fix) after a lot of head scratching and cursing I
finally said screw it and ran new fuel line from the selector switch to an electric fuel pump and then straight to the command center. Never goes into
the engine compartment and never goes through the mechanical pump.
This 100% solved the problem.
So the problem all along was the fuel line running in the engine compartment and through the mechanical pump. It's just too damn hot in there for fuel
to sit in a hose for very long.
Fuel was boiling between the mechanical pump and the command center.
Once that was fixed we were rolling.
Now I've got an oil leak somewhere. Looks like the mechanical pump gasket from what I can tell. (mechanical pumps are the devil in my eyes now).
Otherwise she's running great and were in Nebraska somewhere enjoying it.
--
Justin Brady
http://www.thegmcrv.com/
1976 Palm Beach 455
================
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Jerry & Sharon Work
78 Royale
Kerby, OR
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| Re: [GMCnet] My 1976 Palm Beach Project [message #320322 is a reply to message #320317] |
Wed, 12 July 2017 10:42  |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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The other way is two electric pumps with check valves and the outputs tee'd together. The Fuel Pump Follies pictures show how:
http://www.gmcmhphotos.com/photos/g6198-cane-9-creek-rv-park-heflin-2c-al.html
Don't use the supplied filters with the Mr. Gasket pumps, they fail at the seam. Wix has an exact replacement, use it. This method gives redundancy in the pumps - which I suspect come from the HEathen Chinee, and has the feed to the carb or in your case the fuel command center. Blank flange the mechanical pump opening and go on your way.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: [GMCnet] My 1976 Palm Beach Project [message #320326 is a reply to message #320322] |
Wed, 12 July 2017 10:55 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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I know that there is a significant pressure drop when you pull fuel through
a Carter 4070 electric fuel pump. For that reason, when I install one, I
plumb a bypass with a check valve in it around the pump. No drop in
pressure with that setup. I have always toyed with the idea of making a
metal lined bypass setup for sale. Any interest out there? With all the
hose nipples, tees, short hoses, clamps, barbs, etc. It is an ugly beast,
but it works. I'm thinking a manifold kinda like the Quadra bag airline
setup. Slick, compact, fewer short hoses and clamps.
Jim Hupy
Salem, Or
78 GMC ROYALE 403
On Jul 12, 2017 8:43 AM, "Johnny Bridges via Gmclist" <
gmclist@list.gmcnet.org> wrote:
> The other way is two electric pumps with check valves and the outputs
> tee'd together. The Fuel Pump Follies pictures show how:
> http://www.gmcmhphotos.com/photos/g6198-cane-9-creek-rv-
> park-heflin-2c-al.html
> Don't use the supplied filters with the Mr. Gasket pumps, they fail at the
> seam. Wix has an exact replacement, use it. This method gives redundancy
> in the pumps - which I suspect come from the HEathen Chinee, and has the
> feed to the carb or in your case the fuel command center. Blank flange the
> mechanical pump opening and go on your way.
>
> --johnny
> --
> 76 26' Eleganza(?) with beaucoup mods and add - ons.
> Braselton, Ga.
> "I forgive them all, save those who hurt the dogs. They must answer to me
> in hell" - ol Andy, paraphrased
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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| Re: [GMCnet] My 1976 Palm Beach Project [message #320327 is a reply to message #320326] |
Wed, 12 July 2017 11:02 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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Senior Member |
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Pix ?
On Wed, Jul 12, 2017 at 8:56 AM James Hupy wrote:
> I know that there is a significant pressure drop when you pull fuel through
> a Carter 4070 electric fuel pump. For that reason, when I install one, I
> plumb a bypass with a check valve in it around the pump. No drop in
> pressure with that setup. I have always toyed with the idea of making a
> metal lined bypass setup for sale. Any interest out there? With all the
> hose nipples, tees, short hoses, clamps, barbs, etc. It is an ugly beast,
> but it works. I'm thinking a manifold kinda like the Quadra bag airline
> setup. Slick, compact, fewer short hoses and clamps.
> Jim Hupy
> Salem, Or
> 78 GMC ROYALE 403
>
> On Jul 12, 2017 8:43 AM, "Johnny Bridges via Gmclist" gmclist@list.gmcnet.org> wrote:
>
>> The other way is two electric pumps with check valves and the outputs
>> tee'd together. The Fuel Pump Follies pictures show how:
>> http://www.gmcmhphotos.com/photos/g6198-cane-9-creek-rv-
>> park-heflin-2c-al.html
>> Don't use the supplied filters with the Mr. Gasket pumps, they fail at
> the
>> seam. Wix has an exact replacement, use it. This method gives
> redundancy
>> in the pumps - which I suspect come from the HEathen Chinee, and has the
>> feed to the carb or in your case the fuel command center. Blank flange
> the
>> mechanical pump opening and go on your way.
>>
>> --johnny
>> --
>> 76 26' Eleganza(?) with beaucoup mods and add - ons.
>> Braselton, Ga.
>> "I forgive them all, save those who hurt the dogs. They must answer to
> me
>> in hell" - ol Andy, paraphrased
>>
>>
>> _______________________________________________
>> 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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--
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 #320332 is a reply to message #320326] |
Wed, 12 July 2017 11:20 |
bdub
Messages: 1578
Registered: February 2004
Location: Central Texas
Karma: 5
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Sam as this but with steel lines?
http://appliedgmc.com/prod.itml/icOid/1790
bdub
-----Original Message-----
From: Gmclist On Behalf Of James Hupy
Sent: Wednesday, July 12, 2017 10:55 AM
I know that there is a significant pressure drop when you pull fuel through a
Carter 4070 electric fuel pump. For that reason, when I install one, I plumb a
bypass with a check valve in it around the pump. No drop in pressure with that
setup. I have always toyed with the idea of making a metal lined bypass setup
for sale. Any interest out there? With all the hose nipples, tees, short hoses,
clamps, barbs, etc. It is an ugly beast, but it works. I'm thinking a manifold
kinda like the Quadra bag airline setup. Slick, compact, fewer short hoses and
clamps.
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bdub
'76 Palm Beach/Central Texas
www.bdub.net
www.gmcmhphotos.com
www.gmcmotorhomemarketplace.com
www.gmcmhregistry.com
www.facebook.com/groups/classicgmcmotorhomes
www.facebook.com/groups/gmcmm
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| Re: [GMCnet] My 1976 Palm Beach Project [message #320333 is a reply to message #320332] |
Wed, 12 July 2017 11:31 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Senior Member |
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Yeah, kinda, but eliminate a whole bunch of hoses and clamps.
Jim Hupy
On Jul 12, 2017 9:21 AM, "Billy Massey" wrote:
> Sam as this but with steel lines?
> http://appliedgmc.com/prod.itml/icOid/1790
>
> bdub
>
>
> -----Original Message-----
> From: Gmclist On Behalf Of James Hupy
> Sent: Wednesday, July 12, 2017 10:55 AM
>
> I know that there is a significant pressure drop when you pull fuel
> through a
> Carter 4070 electric fuel pump. For that reason, when I install one, I
> plumb a
> bypass with a check valve in it around the pump. No drop in pressure with
> that
> setup. I have always toyed with the idea of making a metal lined bypass
> setup
> for sale. Any interest out there? With all the hose nipples, tees, short
> hoses,
> clamps, barbs, etc. It is an ugly beast, but it works. I'm thinking a
> manifold
> kinda like the Quadra bag airline setup. Slick, compact, fewer short hoses
> and
> clamps.
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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| Re: [GMCnet] My 1976 Palm Beach Project [message #320986 is a reply to message #320333] |
Mon, 24 July 2017 13:07 |
Justin Brady
Messages: 769
Registered: April 2015
Location: Bell Buckle, TN
Karma: 11
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Senior Member |
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Well we made it!
5000+ Miles in the last 2 weeks and we're home safe and sound.
Diverting the fuel lines around the engine compartment 100% cured the vapor lock. Not so much as a stutter after that. Anyone with vapor lock issues, fitech or not, should consider routing the fuel lines OUT of the engine compartment and using an electric pump instead of the mechanical. I'm convinced that carburetor or FI this is the real culprit.
For the motorcycle that we all had concerns about. It rode on the carrier all 5000 miles, up every mountain and into every campsite. Not a single shred of an issue.
There's a few reasons for that. This is just my opinions and your mileage may vary:
We rebuilt the whole interior, we did this with light weight materials instead of the heavy ass particle board that we pulled out. On the way westward I stopped at a certified CAT scale and weighed. Total weight, with both of us up front, fuel full, water full, and packed for 2 weeks out west our weight was 11,200 lbs. That includes the motorcycle at 590lbs and the carrier at 150lbs. So weight without the bike is a piddly 10,460 lbs FULLY LOADED.
That includes walnut countertops and trim and a full tile bathroom.
Point is, I think the reason we do so well with the bike is the fact that we're ~1500lbs lighter than stock.
http://www.thegmcrv.com/wp-content/uploads/2017/07/IMG_20170712_195148-EFFECTS.jpg
http://www.thegmcrv.com/wp-content/uploads/2017/07/IMG_20170712_200017.jpg
The only other major issue we had was an oil leak at the fuel pump (Gasket replacement helped but didn't fix it)and a BUNCH of broken belts. We broke 3 AC belts and 3 Alternator belts. What a PITA.
My view on this is two fold, we were driving too much (12hr days) to stop and retension them after a few miles (/ i was lazy) and 2nd, the quality of belts is all over the board depending on the source. I finally ended up with Napa Premium belts at $30/piece and those seem to be holding with no squeals so far after about 1000 miles.
We didn't quite get finished before we left, a few little things left to do but here's the "finished" product.
http://www.thegmcrv.com/wp-content/uploads/2017/07/IMG_20170713_081802.jpg
http://www.thegmcrv.com/wp-content/uploads/2017/07/IMG_20170713_081659.jpg
http://www.thegmcrv.com/wp-content/uploads/2017/07/IMG_20170713_082034.jpg
http://www.thegmcrv.com/wp-content/uploads/2017/07/IMG_20170713_074636.jpg
http://www.thegmcrv.com/wp-content/uploads/2017/07/PANO_20170713_074333.jpg
http://www.thegmcrv.com/wp-content/uploads/2017/07/IMG_20170711_072321.jpg
And all this work turned out to be worth it! Here's the end result:
http://www.thegmcrv.com/wp-content/uploads/2017/07/IMG_20170718_133353_346.jpg
Justin Brady
http://www.thegmcrv.com/
1976 Palm Beach 455
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| Re: [GMCnet] My 1976 Palm Beach Project [message #320999 is a reply to message #320986] |
Mon, 24 July 2017 16:43 |
werewilfs
Messages: 329
Registered: July 2012
Location: Rappahannock County, VA
Karma: 0
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Senior Member |
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Congrats Justin!
On Monday, July 24, 2017 2:08 PM, Justin Brady wrote:
Well we made it!
5000+ Miles in the last 2 weeks and we're home safe and sound.
Diverting the fuel lines around the engine compartment 100% cured the vapor lock. Not so much as a stutter after that. Anyone with vapor lock issues,
fitech or not, should consider routing the fuel lines OUT of the engine compartment and using an electric pump instead of the mechanical. I'm
convinced that carburetor or FI this is the real culprit.
For the motorcycle that we all had concerns about. It rode on the carrier all 5000 miles, up every mountain and into every campsite. Not a single
shred of an issue.
There's a few reasons for that. This is just my opinions and your mileage may vary:
We rebuilt the whole interior, we did this with light weight materials instead of the heavy ass particle board that we pulled out. On the way westward
I stopped at a certified CAT scale and weighed. Total weight, with both of us up front, fuel full, water full, and packed for 2 weeks out west our
weight was 11,200 lbs. That includes the motorcycle at 590lbs and the carrier at 150lbs. So weight without the bike is a piddly 10,460 lbs FULLY
LOADED.
That includes walnut countertops and trim and a full tile bathroom.
Point is, I think the reason we do so well with the bike is the fact that we're ~1500lbs lighter than stock.
http://www.thegmcrv.com/wp-content/uploads/2017/07/IMG_20170712_195148-EFFECTS.jpg
http://www.thegmcrv.com/wp-content/uploads/2017/07/IMG_20170712_200017.jpg
The only other major issue we had was an oil leak at the fuel pump (Gasket replacement helped but didn't fix it)and a BUNCH of broken belts. We broke
3 AC belts and 3 Alternator belts. What a PITA.
My view on this is two fold, we were driving too much (12hr days) to stop and retension them after a few miles (/ i was lazy) and 2nd, the quality of
belts is all over the board depending on the source. I finally ended up with Napa Premium belts at $30/piece and those seem to be holding with no
squeals so far after about 1000 miles.
We didn't quite get finished before we left, a few little things left to do but here's the "finished" product.
http://www.thegmcrv.com/wp-content/uploads/2017/07/IMG_20170713_081802.jpg
http://www.thegmcrv.com/wp-content/uploads/2017/07/IMG_20170713_081659.jpg
http://www.thegmcrv.com/wp-content/uploads/2017/07/IMG_20170713_082034.jpg
http://www.thegmcrv.com/wp-content/uploads/2017/07/IMG_20170713_074636.jpg
http://www.thegmcrv.com/wp-content/uploads/2017/07/PANO_20170713_074333.jpg
http://www.thegmcrv.com/wp-content/uploads/2017/07/IMG_20170711_072321.jpg
And all this work turned out to be worth it! Here's the end result:
http://www.thegmcrv.com/wp-content/uploads/2017/07/IMG_20170718_133353_346.jpg
--
Justin Brady
http://www.thegmcrv.com/
1976 Palm Beach 455
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Jared & Stefanie Kohl
Rappahannock County, VA
1973 Painted Desert "Onslow"
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| Re: [GMCnet] My 1976 Palm Beach Project [message #321000 is a reply to message #320986] |
Mon, 24 July 2017 17:01 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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Driving 12 hours does not cause the belts to brake, must had old stored
belt.
On Mon, Jul 24, 2017 at 11:07 AM, Justin Brady wrote:
> Well we made it!
> 5000+ Miles in the last 2 weeks and we're home safe and sound.
>
> Diverting the fuel lines around the engine compartment 100% cured the
> vapor lock. Not so much as a stutter after that. Anyone with vapor lock
> issues,
> fitech or not, should consider routing the fuel lines OUT of the engine
> compartment and using an electric pump instead of the mechanical. I'm
> convinced that carburetor or FI this is the real culprit.
>
> For the motorcycle that we all had concerns about. It rode on the carrier
> all 5000 miles, up every mountain and into every campsite. Not a single
> shred of an issue.
> There's a few reasons for that. This is just my opinions and your mileage
> may vary:
> We rebuilt the whole interior, we did this with light weight materials
> instead of the heavy ass particle board that we pulled out. On the way
> westward
> I stopped at a certified CAT scale and weighed. Total weight, with both of
> us up front, fuel full, water full, and packed for 2 weeks out west our
> weight was 11,200 lbs. That includes the motorcycle at 590lbs and the
> carrier at 150lbs. So weight without the bike is a piddly 10,460 lbs FULLY
> LOADED.
> That includes walnut countertops and trim and a full tile bathroom.
> Point is, I think the reason we do so well with the bike is the fact that
> we're ~1500lbs lighter than stock.
> http://www.thegmcrv.com/wp-content/uploads/2017/07/IMG_
> 20170712_195148-EFFECTS.jpg
>
>
>
> http://www.thegmcrv.com/wp-content/uploads/2017/07/IMG_20170712_200017.jpg
>
>
>
> The only other major issue we had was an oil leak at the fuel pump (Gasket
> replacement helped but didn't fix it)and a BUNCH of broken belts. We broke
> 3 AC belts and 3 Alternator belts. What a PITA.
> My view on this is two fold, we were driving too much (12hr days) to stop
> and retension them after a few miles (/ i was lazy) and 2nd, the quality of
> belts is all over the board depending on the source. I finally ended up
> with Napa Premium belts at $30/piece and those seem to be holding with no
> squeals so far after about 1000 miles.
>
> We didn't quite get finished before we left, a few little things left to
> do but here's the "finished" product.
>
> http://www.thegmcrv.com/wp-content/uploads/2017/07/IMG_20170713_081802.jpg
>
>
> http://www.thegmcrv.com/wp-content/uploads/2017/07/IMG_20170713_081659.jpg
>
>
> http://www.thegmcrv.com/wp-content/uploads/2017/07/IMG_20170713_082034.jpg
>
>
> http://www.thegmcrv.com/wp-content/uploads/2017/07/IMG_20170713_074636.jpg
>
>
> http://www.thegmcrv.com/wp-content/uploads/2017/07/PANO_
> 20170713_074333.jpg
>
>
> http://www.thegmcrv.com/wp-content/uploads/2017/07/IMG_20170711_072321.jpg
>
>
> And all this work turned out to be worth it! Here's the end result:
> http://www.thegmcrv.com/wp-content/uploads/2017/07/IMG_
> 20170718_133353_346.jpg
>
> --
> Justin Brady
> http://www.thegmcrv.com/
> 1976 Palm Beach 455
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] My 1976 Palm Beach Project [message #321013 is a reply to message #320317] |
Mon, 24 July 2017 20:01 |
SpookyEng
Messages: 208
Registered: June 2016
Location: Navarre, FL
Karma: -5
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Senior Member |
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Congrats! The coach came out beautifully, I really admire your craftsmanship. I wish you both many years of happiness!
JD Lisenby- USAF Ret
1978 Royale-455
MacDash, Manny Tranny, FI-tech, 3.70 etc etc
Navarre, FL
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