| Re: Hello to all! First potential MotorHome purchase [message #370888 is a reply to message #370887] |
Sat, 24 December 2022 10:56   |
tphipps
Messages: 3005
Registered: August 2004
Location: Spanish Fort, AL
Karma: 9
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If the quadjet carb is not an actual motorhome version, it will work somewhat, but you will need the correct carb. They are actually different internally. Dick Patterson is your man.
2012 Phoenix Cruiser model 2552
KA4CSG
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| [GMCnet] Re: Hello to all! First potential MotorHome purchase [message #370889 is a reply to message #370850] |
Sat, 24 December 2022 10:56 |
tphipps
Messages: 3005
Registered: August 2004
Location: Spanish Fort, AL
Karma: 9
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Senior Member |
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If the quadjet carb is not an actual motorhome version, it will work somewhat, but you will need the correct carb. They are actually different
internally. Dick Patterson is your man.
--
2012 Phoenix Cruiser model 2552
KA4CSG
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2012 Phoenix Cruiser model 2552
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| Re: [GMCnet] Re: Hello to all! First potential MotorHome purchase [message #370893 is a reply to message #370892] |
Sat, 24 December 2022 17:54 |
Bruce Hart
Messages: 1500
Registered: October 2011
Location: La Grange, Wyoming
Karma: 5
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Senior Member |
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Carb numbers found on left side, stamped on the flat surface close to secondary throttle shaft
Date code (4 digits) stamped in same area, 73 to 76 has number starting with 70. 77 & 78
Carbs start with 170. Do not interchange parts between these series
The proper power spring for the gmc is 7036019 that has operating rang of 4"to 8" of vacuum
DELCO OVERHAUL KIT FOR 73 & 74 7046812
73 and 74 carb #7043254
Bruce Hart
1976 Palm Beach
1977 28' Kingsley
La Grange, Wyoming
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| Re: [GMCnet] Re: Hello to all! First potential MotorHome purchase [message #370918 is a reply to message #370897] |
Mon, 26 December 2022 13:45 |
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Jarrod Bagwell
Messages: 18
Registered: December 2022
Location: Crawfordville, Fl
Karma: 0
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Junior Member |
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Quick update for everyone. I'm on site working on the motorhome right now. It turns free, the frame looks good and I've pulled and inspected all the spark plugs. One broke on me but I was able to remove the broken one and replace it with a new similar one. It looks like this one does have HEI as I don't see points on the distributor and the sparkplugs (majority Autolite 847s) are for HEI. I've lubed the cylinders and with a bit of redneck engineering I was able to extend my vacuum nozzle to clean out the rest of the acorns and such in the intake, so I don't need to take it off now.
Right now my brother and I are prepping the carb to be mounted. It's a later year carb (stamped 170) so I know the CFM is not right but I should still be able to get the engine to fire, which is the point of my work today.
After we get the carb mounted I'll put power to the system and see if I can get the starter turning, see if I can get oil pressure. After that, see if we have spark and can make it fire.
Jarrod Bagwell
Potential 1973 GMC
Crawfordville, Florida
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| Re: [GMCnet] Re: Hello to all! First potential MotorHome purchase [message #370921 is a reply to message #370918] |
Mon, 26 December 2022 16:29 |
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Jarrod Bagwell
Messages: 18
Registered: December 2022
Location: Crawfordville, Fl
Karma: 0
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Junior Member |
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Well folks, I'm happy to report that it runs! I wasn't able to use the carb as it is the wrong one and a linkage was impacting the top of the intake. But, I was able to use my remote start switch to get the engine turning over, then give it a snort of ether to make it fire off for a second or so. Exciting times for me.
Jarrod Bagwell
Potential 1973 GMC
Crawfordville, Florida
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| Re: [GMCnet] Re: Hello to all! First potential MotorHome purchase [message #370927 is a reply to message #370918] |
Mon, 26 December 2022 18:59 |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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Jarrod Bagwell wrote on Mon, 26 December 2022 14:45Quick update for everyone. I'm on site working on the motorhome right now. It turns free, the frame looks good and I've pulled and inspected all the spark plugs. One broke on me but I was able to remove the broken one and replace it with a new similar one. It looks like this one does have HEI as I don't see points on the distributor and the sparkplugs (majority Autolite 847s) are for HEI. I've lubed the cylinders and with a bit of redneck engineering I was able to extend my vacuum nozzle to clean out the rest of the acorns and such in the intake, so I don't need to take it off now.
Right now my brother and I are prepping the carb to be mounted. It's a later year carb (stamped 170) so I know the CFM is not right but I should still be able to get the engine to fire, which is the point of my work today.
After we get the carb mounted I'll put power to the system and see if I can get the starter turning, see if I can get oil pressure. After that, see if we have spark and can make it fire.
Jarrod,
When you get close to road worthy, plan to lay in all the spares for the HEI. Olds are different than others, but the others will work. HEI is now an old system, and spares are essential as the system will fail if a plug gap gets too far open. The owners that stay on top of this have less trouble.
good to read that it has fired.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| Re: [GMCnet] Re: Hello to all! First potential MotorHome purchase [message #370928 is a reply to message #370927] |
Mon, 26 December 2022 20:28 |
Bruce Hart
Messages: 1500
Registered: October 2011
Location: La Grange, Wyoming
Karma: 5
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Senior Member |
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Ignition coils and pickup coils should be considered a "matched set", that is, you need to look at the
color codes on each part and match the codes to each other, and to the vehicle/engine family the
distributor will be used in. Failure to use the appropriate color codes may result in poor starting and
misfiring at low speed. The brand names listed are for the ENGINES, not the CARS--a Chevy-designed
engine in a Buick car uses the Chevrolet color codes, not the Buick color codes.
For V-8 engines, there are three color codes for the pickup coils:
Yellow tyrap (early) or Yellow plastic connector on the wires(later). Used on Chevrolet;
Cadillac; and[u] Olds engines in Toronado[/u]
Blue tyrap (early) or Black plastic connector (later) on the wires. Used on Buick; and all Olds
engines except those in Toronados. The lead wires are slightly longer than those used on the "yellow" pickup coil.
Clear or NO tyrap (early), Clear or NO plastic connector (later) on the wires This is identical to
the Blue/Black color code, except the wires are even longer to fit a Pontiac distributor
There are two color codes for the in-cap ignition coils:
Red and Yellow wires Used on vehicles that use the Yellow coded pickup coil. (CHEVY, Cadilac, Toronado)
Red and White wires Used on vehicles that use the Blue/Black, or Clear pickup coils
One of the more common problems in that HEI is the wires going into the pickup coil right at the coil itself. (The yellow and green wires). They break inside the insulation where they go into the coil because that coil is constantly being rotated slightly by the vacuum advance. The constant bending of those wire breaks them. I suspect yours has had the biscuit. Remove the distributor and Replace the pickup coil whether that is the problem or not. (I suspect it is however) I replaced the pick up coils in vehicles that had more than 50000 miles since being done as part of a major tune up.
(Distributor removed, cleaned, lubed, weight friction points polished, and vacuum pot tested for operation).
That distributor rotates counter clockwise in such a way that the cam constantly pulls the distributor shaft down and into the engine. The large amount of end play is normal. Chevy turns clockwise and will push it up and has a spacer at the bottom of the distributor to accommodate that movement. (Do not put one in yours)
When you buy a new pickup coil, make sure wire colors and position on the coil is the same as yours. Make sure you clean the spiral groove on the distributor shaft of gum and other oil goo. Lubricate the the centrifugal advance parts and put the advance weights with writing down. (Opposite to most other GM HEI units) Finally make sure you put silicone dialectic compound under the ignition module. Measure the plug wires for resistance, add a set of fresh plugs, ensure the timing is correct and things should be fine for a long time to come.
Be sure to get the red and yellow wire on the ignition coil.
https://www.napaonline.com/en/p/MPEIC19SB?impressionRank=1
This one has the white and red wires.
https://www.napaonline.com/en/p/ECHIC18?impressionRank=1
Ask for Delco-Remy coil, module, cap, and rotor.
Bruce Hart
1976 Palm Beach
1977 28' Kingsley
La Grange, Wyoming
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| Re: [GMCnet] Re: Hello to all! First potential MotorHome purchase [message #370931 is a reply to message #370928] |
Tue, 27 December 2022 20:17 |
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Jarrod Bagwell
Messages: 18
Registered: December 2022
Location: Crawfordville, Fl
Karma: 0
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Junior Member |
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Got the estimate for the tow to my house... ~1000 dollars because of the complexity of removing the Motorhome from the current owner's yard. If I want that estimate to go down I'd have to get the front brakes working and the air suspension working. At this point I don't think this deal is going to be worth it. I'd be in it 2k and still need a carb and not know if the transmission works or not.
Jarrod Bagwell
Potential 1973 GMC
Crawfordville, Florida
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| Re: [GMCnet] Re: Hello to all! First potential MotorHome purchase [message #370932 is a reply to message #370931] |
Wed, 28 December 2022 05:55 |
Bruce Hart
Messages: 1500
Registered: October 2011
Location: La Grange, Wyoming
Karma: 5
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Senior Member |
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Do the air bags have valve stems so you can manually inflated the bags? Cheap and easy to install, and you would need the backend raised as high as it would go anyway.
Why do the front brakes have to work? Without engine vacuum you wouldn't be able to put much pressure on the brakes anyway.
Make it a condition of the sell to have owner place motor home in a more accessible location.
Bruce Hart
1976 Palm Beach
1977 28' Kingsley
La Grange, Wyoming
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| Re: [GMCnet] Re: Hello to all! First potential MotorHome purchase [message #370933 is a reply to message #370932] |
Wed, 28 December 2022 06:23 |
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Jarrod Bagwell
Messages: 18
Registered: December 2022
Location: Crawfordville, Fl
Karma: 0
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Junior Member |
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The brakes need to work somewhat to assist in controlling the motorhome during the moves needed to get it out of the owner's yard. Issue there is that at some point the front passenger rotor overheated and broke. The remains of the rotor and the caliper firmly grabbed onto it are in a box in the motorhome. From what I can see it would be around 250 dollars in parts just for a new rotor and caliper, not to mention I'd still need a new brake line and pads. The air bags from what I saw might be the original ones and are in very rough shape. They might hold air for a time but ultimately they'll need replacing. That's another 1.5k from what I found online. Ultimately, it's not just the complexity of the tow but as I start to estimate the costs of getting the drivetrain fixed to the point where this thing can drive I'm looking at around 3-5 thousand plus the 2 thousand of purchase plus tow.
Over time I could get this done as I do all of my own work, but I have other projects that also require my attention and I really want to use the money elsewhere, mainly to get a few of these other projects done and out the door.
If my Youtube channel was providing a money stream that would be different, but it's not there yet. So when I look at the whole picture, it's not a great deal for me, unless I basically could get an investor to help pay with repairs. I don't see that happening either.
Jarrod Bagwell
Potential 1973 GMC
Crawfordville, Florida
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| Re: [GMCnet] Re: Hello to all! First potential MotorHome purchase [message #370934 is a reply to message #370933] |
Wed, 28 December 2022 08:57 |
lqqkatjon
Messages: 2324
Registered: October 2010
Location: St. Cloud, MN
Karma: 5
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Senior Member |
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Do some searching on gmc forum. The rotor/caliper problem is a BIG deal. One thing unique with the gmc is the front bearing system. The rotor is mounted to hub. To change a rotor properly, you have to service front bearings and that takes special tools and usually the knuckle bore is wore out and needs replacing.
That can be pushing $500 a side to do it right. And to not do it right some have learned the hard way it is $2000-$3000 and being stranded for a period of time to fix a failed front bearing on the road.
Jon Roche
75 palm beach
EBL EFI, manny headers, Micro Level, rebuilt most of coach now.
St. Cloud, MN
http://lqqkatjon.blogspot.com/
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| Re: [GMCnet] Re: Hello to all! First potential MotorHome purchase [message #370935 is a reply to message #370933] |
Wed, 28 December 2022 08:59 |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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Senior Member |
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Jarrod good friend,
First, if the brake disc is cracked, the knuckle has to get taken apart to replace it. A replacement is over 100$us and the job requires special tools to do and you should probably ship the knuckles to Dave Lenzi to have them rebuilt correctly. His usual bill for just the rebuild is about 1K, but well worth it.
Yes, you can put shrader valves in the airsprings for a temporary move.
We have a consistent line we use in the community that I suggest that you use to keep focus.
"A reliable and ready to travel coach will cost you 30,000$. All at once or as a kit."
What this does not say is that sweat gets credited at full shop rate. A Sirum's that is 125$/mHr. There is nothing about these coaches that a literate and decent technician with the downloaded documentation can't manage. And with 125$hr credit, tools can be easily afforded.
I submit to you that the current untitled owner would like it gone. Therefore, I also suggest that you change delivery to something like FOB at the curb for his price. It has been my experience that owners can change their position very fast when looking at the result of both unloading and getting cash.
Best of luck.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| Re: [GMCnet] Re: Hello to all! First potential MotorHome purchase [message #370937 is a reply to message #370935] |
Wed, 28 December 2022 12:47 |
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Jarrod Bagwell
Messages: 18
Registered: December 2022
Location: Crawfordville, Fl
Karma: 0
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Junior Member |
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I already told the owner and he understood. I don't think it's going to sell so it will be in his yard awhile yet. He also said I'm welcome to come up and work on it bit by bit whenever, though I really don't want to do much more work on it at all unless I have a bill of sale. Perhaps in a few months when my cash setup is a bit better I'll revisit. It really is too good to let rot away but I just don't have the resources in place right now to bring it back.
Jarrod Bagwell
Potential 1973 GMC
Crawfordville, Florida
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| Re: [GMCnet] Re: Hello to all! First potential MotorHome purchase [message #370939 is a reply to message #370938] |
Wed, 28 December 2022 20:02 |
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Jarrod Bagwell
Messages: 18
Registered: December 2022
Location: Crawfordville, Fl
Karma: 0
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Junior Member |
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I will be. In a few months I'm hoping to have more cash flow that I can devote to something like this. The whole point of this coach is that a family member would live in it as they got back on their feet and could have something they could down the road drive on a piece of land they buy eventually. That family member is interested in trying to get this thing turned around as it's available and its well... a motor home. We'll just have to see where he is and I am in a few months and if the coach is still available.
Jarrod Bagwell
Potential 1973 GMC
Crawfordville, Florida
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| Re: Hello to all! First potential MotorHome purchase [message #370941 is a reply to message #370850] |
Thu, 29 December 2022 11:09 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Senior Member |
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Have you a picture of this coach in situ? As long as the wheels turn, you should be able to get it to pavement one way or another. Your goal should be in your workspace for a thou or less.
--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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