Boost Solenoid

R

robert mueller

New member
Jul 4, 2007
17,586
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G'day,

The boost solenoid on the Kingsley is badly rusted and someone used a coarse threaded nut on one of the the fine threaded 5/16 power connections.

I checked the GMCMI parts list and got the correct part number ECH ST80 but was wondering if it would be better to get one that is rated at higher
amperage?
--
Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
 
> G'day,
>
> The boost solenoid on the Kingsley is badly rusted and someone used a coarse threaded nut on one of the the fine threaded 5/16 power connections.
>
> I checked the GMCMI parts list and got the correct part number ECH ST80 but was wondering if it would be better to get one that is rated at higher
> amperage?

Rob,

That one is rated at 80 continues and 200 inrush. The only others I could find that were only rated at 200/600 and were Cole/Hersee and somewhat more
expensive. For as much as it gets used, I pretty sure I wouldn't bother.

Matt
--
Matt & Mary Colie - '73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan
OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Twixt A2 and Detroit
 
Bob,
When it comes to high amp, I would neve go lower than what the factory
called out for. It will work, but cannot determin for how long depending on
usage.
As usual, should yo have any issue aquirig one, we have them in stock

On Sun, Aug 5, 2018 at 9:37 AM, Robert Mueller
wrote:

> G'day,
>
> The boost solenoid on the Kingsley is badly rusted and someone used a
> coarse threaded nut on one of the the fine threaded 5/16 power connections.
>
> I checked the GMCMI parts list and got the correct part number ECH ST80
> but was wondering if it would be better to get one that is rated at higher
> amperage?
> --
> Regards,
> Rob M. (USAussie)
> The Pedantic Mechanic
> Sydney, Australia
> '75 Avion - AUS - The Blue Streak TZE365V100428
> '75 Avion - USA - Double Trouble TZE365V100426
>
> _______________________________________________
> 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
http://www.appliedgmc.com
1-800-752-7502
 
Rob,

I recently had a whole post about this issue. http://gmc.mybirdfeeder.net/GMCforum/index.php?t=msg&th=41120&rid=5339

I ended up buying this one: https://www.napaonline.com/en/p/ECHST80

There are some cheaper suggestions in that threat from Amazon, but the Napa store near me had it and I was cleaning up my wiring, so I went ahead and
purchsed that. Mine was really old and the posts were loose. I definitely noticed a significant difference in operation of the Boost, between my old
one and the Napa one.
--
Brian K
1977 Eleganza II, TZE167V100261
Bellevue, WA
Rebuilt 455, New brake system, a lot of Original Equipment ready to fall apart (discovering more as I go along....)
 
I took the easy way out on this one: Called Jim Bounds and had him send me two new ones.
--
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles,
Solar battery charging. GMCSJ and GMCMI member
 
$16.00 at Amazon

--
1977 Kingsley 455 as stock as it gets except lots of Ragusa parts
 
I had to replace my booster solenoid a couple of weeks ago. While I was testing the Intellitec Battery Disconnect I found I had voltage on both sides
of the solenoid. Found a new in the box Echlin st80 on e-bay. I have no idea how long I was running with all the batteries connected. Put on the new
solenoid and all is well.

Jim Wagner
Brook Park, oh

76 GMC500
71 Vega355
69 Vette383
 
That's kind of funny. Maybe he means with one batt disconnected? I cut this board 3 times and it's still too short!

--
John Lebetski
Woodstock, IL
77 Eleganza II
 
Thanks John. That is what I ment.
When I disconnected the cables from one side of the solenoid I still had voltage to both sides. A new solenoid fixed the problem.
Jim Wagner
76 GMC500
71 Vega355
69 Vette383

That's kind of funny. Maybe he means with one batt disconnected? I cut this board 3 times and it's still too short!
 
Thanks for stepping in Bruce. I don't want anyone to through away a good solenoid because what I typed. I have no idea how long the solenoid had been
shorted across but all is OK now.

Jim Wagner
Brook Park, oh

76 GMC500
71 vega355
39 Vette 383

Sorry for stepping in there, I should have read Jim's posting more carefully.
 
Looks good Rob, I especially like the weatherproof covering.
I ended going with the Cole-Hersee. I like the silver tungsten contacts on the inside. Mine says made in Mexico..........better than China, I
think...
Scott.
--
Scott Nutter
1978 Royale Center Kitchen, Patterson 455, switch pitch tranny, 3.21 final drive, Quad bags, tankless water heater, everything Lenzi. Alex Ferrera
installed MSD Atomic EFI
Houston, Texas
 
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