Home » Public Forums » GMCnet » 6.5 swap progress
| Re: [GMCnet] 6.5 swap progress [message #284837 is a reply to message #284834] |
Thu, 13 August 2015 22:54   |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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I was referring to what looks like a long lever/handle between two things
that look sort of like regulators 'way up under the left side of the
compartment.
My one suggestion about the replacing the dash is this:
http://www.gmcmhphotos.com/photos/g4899-new-dash-panel.html
As far as you're into it anyway, why not go ahead and make it truly like
you want it inside. Of all the stuff I've done to the GMC, I'm probably
most happy with and enjoy that. And it REALLY wasn't very difficult.
Compared to what you've done, it's really trivial. Just jump in and DO it,
like I did. That windshield rail you're concerned about as an attachment
location for the OEM dash makes a really nice basis for a new dash top.
I'll look forward to seeing it in Pueblo. :-)
Ken H.
On Thu, Aug 13, 2015 at 11:21 PM, Hal StClair
wrote:
> Thank you Ken.
> The gauge was prior to the Hydroboost, it showed vacuum at the booster
> (Dave Lenzi's product). One of the reasons I changed over to the HB was
> because
> of that gauge-the pump could only make about 18" of vacuum here at a mile
> high elevation. We routinely travel over 7000' elevation and I was afraid
> the pump might have issues at those heights.
> There is a fuse and disconnect for the house batteries to the right
> (drivers side) if that is what you are referring to? The house batteries
> are
> located low on the drivers side behind/above the steering box. There is a
> 2/0 cable running to the rear of the coach from the switch. I don't like to
> have non fused conductors especially with big amperage running through
> them. Guess being a retired electrician sometimes shows :p
> I'm still trying to figure out a way to attach the new dash at the
> windshield area. I hate the idea of removing the front glass to get to the
> screws.
> I thought of using Sika Flex or a similar product but that would make it
> permanent I'm afraid. Any ideas?
> Thanks,Hal
>
>
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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: [GMCnet] 6.5 swap progress [message #284840 is a reply to message #284837] |
Thu, 13 August 2015 23:28 |
Hal StClair
Messages: 971
Registered: March 2013
Location: Rio Rancho NM
Karma: -12
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There are some air horns that look like regulators (?) with the wiper arm linkage you might be looking at?
As for the dash, I REALLY wish I'd have taken your advise. I waited 7 weeks for the new dash because I wanted to save some time. Ha, some time saver. But with all the distractions we've had this summer it really didn't make much difference I'll admit. Just got back from a 3800+ mile trip Monday night that wasn't on this summers agenda and two trips to Las Vegas the end of June and then in early July. Just glad fuel prices are down.  It would have been nice to have a REAL custom dash like your masterpiece.
Hal
"I enjoy talking to you. Your mind appeals to me. It resembles my own mind, except you happen to be insane."
1977 Royale 101348,
1977 Royale 101586, Diesel powered,
1974 Eagle Bus 45',w/slideout,
Rio Rancho, NM
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| Re: [GMCnet] 6.5 swap progress [message #284890 is a reply to message #284818] |
Fri, 14 August 2015 15:07 |
Kosier
Messages: 834
Registered: February 2008
Karma: 1
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Hal,
I'm probably a little late with this, but I have a suggestion. If you could
find the Hydroboost mounting bracket from a '76-'78 Eldorado, it would help
relieve the angularity in your push rod. Or, barring that, loosen the
mounting bolts and drop a couple of alignment shims over the two top bolts.
This would tip the whole unit down in front and up in back.
Gary Kosier
77PB w/ 500 Cad
Newark, Oh
--------------------------------------------------
From: "Hal StClair"
Sent: Thursday, August 13, 2015 8:10 PM
To:
Subject: Re: [GMCnet] 6.5 swap progress
> The summer has been full of unavoidable distractions and I haven't got
> nearly as much done as I hoped too do but I'm back home and at it again.
> Using
> the electric vacuum pump for brakes just didn't seem the 'right' way to go
> so I've been working on a Hydroboost system. I've posted a few details. I
> needed to complete this install before installing the dash as it's next to
> impossible to reach the brake linkage on the 1977 models with the dash
> installed.
> I also got some work done on the 3KW diesel genset, the sound box is about
> done and the gen close to being installed. Maybe in a couple of days I
> will
> have an update.
> Thanks for looking, Hal
>
> http://www.gmcmhphotos.com/photos/u42137-hal-stclair.html
>
>
> --
> 1977 Royale 101348,
>
> 1977 Royale 101586,
>
> 1974 Eagle Bus 45',w/slideout
>
> _______________________________________________
> GMCnet mailing list
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| Re: [GMCnet] 6.5 swap progress [message #284894 is a reply to message #284890] |
Fri, 14 August 2015 15:58 |
Hal StClair
Messages: 971
Registered: March 2013
Location: Rio Rancho NM
Karma: -12
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Thanks Gary, I do have a pair of washers under the top mounting studs which does indeed help the angle. The problem with the basic design lies in the factory designed angle I think. Shorting the rod exaggerates the problem though. When the brake pedal is engaged and the rod pushed it reverses the angularity problem. The angle looks worse than it is as the ball end of the rod is recessed into the HB somewhat. The only way I see to correct it completely would be to design a new belcrank(sp?) and push the HB out beyond the hood. It's a little surprising GMC never incorporated the HB in the original design. It could have been made to work with a right angle bracket possibly. Anyway, I think it should work as is.
As for the bracket, I just modified what I had on hand. The Chevy parts truck gave up some more pieces for the project. It was only a matter of slicing and dicing a little to make it work. The truck also gave up it's PS cooler which fit pretty well. Looking for parts in the men's mall is an all day affair and finding anything that old around here would be tough. I'm sure they are out there if someone else is looking to do something similar and they could source one with a little work. It's always better to use something already built than to have to custom fabricate the piece. You never know when you'll have to replace a part out in 'who knows where' land.
Thank you for the suggestion though.
Hal
"I enjoy talking to you. Your mind appeals to me. It resembles my own mind, except you happen to be insane."
1977 Royale 101348,
1977 Royale 101586, Diesel powered,
1974 Eagle Bus 45',w/slideout,
Rio Rancho, NM
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| Re: [GMCnet] 6.5 swap progress [message #287066 is a reply to message #284894] |
Thu, 10 September 2015 23:52 |
Hal StClair
Messages: 971
Registered: March 2013
Location: Rio Rancho NM
Karma: -12
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Senior Member |
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Just a short update on the swap. I took it out for a short (16 mile) run today for the first time. There are a few gremlins to deal with for sure. The trans only wanted to start in second and wouldn't shift into OD. Looks like a solenoid in the trans or a loose pin or wiring issue to trace down. The solenoid is only a $20 part that requires the pan to be dropped if that's the problem but tracing the wiring needs to be attacked first. I haven't even checked for a fuse yet as I ran out of time today. The cruise also was DOA which 'could' be part of the same issue. The code reader says to look at A solenoid which controls the 1st and OD shifts so that's will be a good starting point. I still have a MIL light on which tells me the ECM and injection pump need to be synched but I need to get the engine temp above 170 to get the computer to sync and I'm only seeing 160 max. I never pulled the stats assuming they hadn't been changed, my bad. The front diff only got to about 140 and there were no shakes, rattles, or unusual noises at all so I was happy with that for sure.
One issue did surprise me though. The front end sagged a good 3 inches on the first run. I have added about 500 lbs to the front but thought the new Huber bars with an additional 19% should be more than adequate to handle the extra weight. I hope they work out.
The little 3 kw Kubota genset pulled the old A/C just fine with the Magnum inverter/charger pumping so that seems to be a go.
Hal
"I enjoy talking to you. Your mind appeals to me. It resembles my own mind, except you happen to be insane."
1977 Royale 101348,
1977 Royale 101586, Diesel powered,
1974 Eagle Bus 45',w/slideout,
Rio Rancho, NM
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| Re: 6.5 swap progress [message #290493 is a reply to message #263848] |
Tue, 17 November 2015 22:32 |
Hal StClair
Messages: 971
Registered: March 2013
Location: Rio Rancho NM
Karma: -12
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Senior Member |
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Hadn't posted any pictures of the gen set installation and thought they may be of interest to some. Not as quiet as I had hoped but probably quieter than the Onan was (I hope).
Hal
http://www.gmcmhphotos.com/photos/u42137-hal-stclair.html
"I enjoy talking to you. Your mind appeals to me. It resembles my own mind, except you happen to be insane."
1977 Royale 101348,
1977 Royale 101586, Diesel powered,
1974 Eagle Bus 45',w/slideout,
Rio Rancho, NM
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