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Old 12-12-2015, 10:47 AM   #379
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Martin, shouldn't you be sleeping?!

Quote:
Originally Posted by martin300662 View Post
Brad, you finding out Mill Supply FG12Q senders made me go and look again at the sender I bought to try and swap the level mechanism. It is a GM part original (GM#25093914 made by ACDelco) for a S10/Sonoma 20 gallon tank, but does have 0-90ohm range. It is setup for two options of pickup; an open pipe or a shorter pipe able to have a electric fuel pump (there are two separate tubes), but the longer tube has a support bracket to hold the fuel pump if using the shorter outlet....both are 11 3/4".

11-3/4" is to long but from the looks of the assembly it could be shortened relatively easily. The depth of the original tank is 11-1/4" from the sending unit opening.

Also, some sort of strainer would be needed at the end of the pickup tube.

Quote:
It is pre-wired for the electric pump. It has the typical large diameter return but also a anti-tip outlet for venting.

I am now starting to think that maybe this sender could be used as a direct replacement either without or even with an added electric fuel pump (they are $230ish from Rock Auto/Amazon/etc so not a cheap part - I only bought it (for less than $50) to satisfy my curiosity.

What do you think?
I think it has definite possibilities. When you get a chance could you measure the diameter of the top where it fits in the tank?

Brad
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Old 12-12-2015, 10:51 AM   #380
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Originally Posted by martin300662 View Post
Hey Brad, did you ever order the aluminum fridge vent panels mentioned on one of the threads? I ordered two from RV Parts Nation; they were backordered but have just arrived.

They are made from aluminum, but unlike the photo on the website they are painted.



They look OK quality and I will see if they can be fitted during 'bodywork' to replace the plastic ones Airstream NE used.

But maybe worth noting they are Dometic parts, designed to be used with the RM 2214 R fridge.

Actually yes I did, I just forgot to post a picture of it! It seems to be of the same quality as the one that was on the 310 which when translated means somewhat cheap and flimsy but usable

Definitely better than using plastic when possible. It will be interesting trying to get paint to stick to them.

I only needed one vent as I will likely be placing the fridge in the same location it was originally so my existing roof vent is still usable.

Brad
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Old 12-13-2015, 06:47 PM   #381
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Quote:
Originally Posted by bkahler View Post
......

I think it has definite possibilities. When you get a chance could you measure the diameter of the top where it fits in the tank?

Brad
The overall outside diameter is 3 5/8", with the outside diameter of the raised lip/ring (I am assuming that ring sits inside the opening to center the sender) at 3 1/8"
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Old 12-14-2015, 04:57 AM   #382
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Quote:
Originally Posted by martin300662 View Post
The overall outside diameter is 3 5/8", with the outside diameter of the raised lip/ring (I am assuming that ring sits inside the opening to center the sender) at 3 1/8"
Those dimensions match the FG12Q sending unit so it looks like your sender will fit in the GM29 tank.

I believe this is the same sending unit that you purchased.
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If the longest tube is 3/8" and if there is a 1/4" tube that is suitable for a return line then I can't see why this one couldn't be made to work. The 11-3/4" tube would need to have a bend put in the bottom of it to bring it up off the bottom of the tank and a strainer sock installed but that shouldn't be a problem.

In my case what I would probably do is use the shorter of the large diameter tubes as a pickup for my genset.

I found this strainer sock online for $12 that I think will work.
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Now I just need to return the one I bought from Mill Supply and order one of these units.

Thanks!

Brad
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Old 12-14-2015, 07:20 AM   #383
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Would it help if I sent you the one I have to investigate Brad?
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Old 12-14-2015, 07:24 AM   #384
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Last night while watching football I decided to take some time to test the two Teleflex fuel gauges that I have. Both are used, one came from the 345 and the other from an ebay purchase.

I used the 0-90 ohm Mill Supply sending unit along with a 12 volt mower battery for testing. Both gauges responded the same, unfortunately neither gave correct readings. When the float was at the empty position the gauges read just slightly over half full. When the float was at the full position both gauges were pegged past the full mark.

The needles would move as the float was moved but would not drop below 1/2 tank. I'm not really sure where to go from here. I checked the resistance reading of the sender and when at low float position the reading was about 1 ohm. At high float level the reading was close to 100 ohms.

Since one of the gauges came from a 345 I'm fairly certain it's for the correct 0-90 sending units as used on GM vehicles of the era. The resistance readings are the same that Steve (Keyair) reported with the sender he purchased for his rebuild.

I am returning the Mill Supply sender since it's broken and doesn't have the right tube configuration. I'll probably end up buying the same unit that Martin purchased. Who knows, maybe that will solve my problem with the gauges.
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Old 12-14-2015, 07:29 AM   #385
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Originally Posted by martin300662 View Post
Would it help if I sent you the one I have to investigate Brad?
Martin, thanks for the offer. If yours has the 1/4" return and the feed is 3/8" then I can't see any reason that it couldn't be made to work. We already know it fits the tank so if the tube dimensions match we should be good to go at which point I will just go ahead and order one.

It would probably help as well for me to order a tank to go with it The cheapest Spectra GM29 tank that I've found is $173.98 delivered.

Brad
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Old 12-14-2015, 08:08 PM   #386
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Originally Posted by bkahler View Post
Martin, thanks for the offer. If yours has the 1/4" return and the feed is 3/8" then I can't see any reason that it couldn't be made to work. We already know it fits the tank so if the tube dimensions match we should be good to go at which point I will just go ahead and order one.

It would probably help as well for me to order a tank to go with it The cheapest Spectra GM29 tank that I've found is $173.98 delivered.

Brad
I'm not sure that is the case Brad.

I measure the longest pipe (that has the support bracket attached) as 1/4". The shorter pipe (which is meant to have the electric pump fitted) is 3/8". The shortest pipe (that I am calling the return) is 9/16" and the pipe fitted with the anti-tipping valve is also 1/4" (but is contoured/mandrelled at the pipe fitting down to 3/16")



I think this will only work with the pump extending the feed down to the base of the tank.
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Old 12-14-2015, 08:53 PM   #387
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Martin, nothing is ever easy is it

I think the large 9/16 line is probably a vapor line. That would either get capped off or in my case I can convert it to a generator feed with a little bit of rework.

The anti tip-over which is some sort of breather when the tank is upright would either be plugged or what would I probably try to do is go ahead and plumb it like they do in race cars.

The long 1/4 return line would be cut off to a few inches below the flange.

The 3/8 suction line would have to be lengthened somehow and a strainer attached.

I think this particular sending unit is the best option found so far. If you're not yet sure you'll be using this one I'll buy it from you and try the mods I'm suggesting. If it works and you want one done the same way I'd be happy to make the mods. That way you're not sitting on a sender you may not need and I would have one to tinker with. Or I can just go ahead and order one.



Brad
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Old 12-15-2015, 08:33 AM   #388
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Makes perfect sense Brad.

I have just spoken to the shop and there is no sign of my tank coming back (I guess at least I am getting free indoor storage!) but there there two things playing on my mind.

1) My tank is bigger than standard; so I am guessing 'taller', and so I am guessing may need a custom length pick-up anyway

2) I am really taken to the idea of using the electric pump within the tank as per the standard 1986 S10 install (that this sender comes from). I now they only had a little six pot engine but as a assistance pump I like the idea.

Both of which I can't really answer until the damn tank comes back!

As there is no way to tell how long the Ebay offer on these senders will last, I suggest you order one and I will take the hit if the one I have never gets used.
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Old 12-15-2015, 10:19 AM   #389
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Makes perfect sense Brad.

I have just spoken to the shop and there is no sign of my tank coming back (I guess at least I am getting free indoor storage!) but there there two things playing on my mind.

1) My tank is bigger than standard; so I am guessing 'taller', and so I am guessing may need a custom length pick-up anyway
Your tank definitely hangs lower than stock.

Quote:
2) I am really taken to the idea of using the electric pump within the tank as per the standard 1986 S10 install (that this sender comes from). I now they only had a little six pot engine but as a assistance pump I like the idea.
The S10 tank in 1986 was 13-1/2" deep and from the pictures of your tank I'd say you're at least 12-1/2" to 13" deep.

Quote:
Both of which I can't really answer until the damn tank comes back!
I can hear your teeth gritting from here

Quote:
As there is no way to tell how long the Ebay offer on these senders will last, I suggest you order one and I will take the hit if the one I have never gets used.
Sounds good. I just finished buying the ACDelco unit for $53.99 which is a lot better than the $414.95 I saw for the same unit also on ebay!

I might look at the in-tank fuel pump arrangement but that would mean shortening the two tubes slightly, moving the pump support bracket and figuring out how to add the bulge on the end of the 3/8" tube. None is insurmountable I just don't know if it would be worth the effort. Fortunately I have a little bit of time to decide what to do.

Brad
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Old 12-19-2015, 10:11 AM   #390
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Well thanks to Peter I now have my in-dash radio on order

I opted to purchase a Jensen XV7012 in dash radio with flip up screen for GPS, movies and rear view camera.
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For those of you not familiar with the early Argosy dashes here's some pictures to give you an idea of what they look like. The dash is the long narrow strip that runs left to right and has switches, radio, vents, etc in it.
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With the dash being long and skinny a standard 2-din radio with a 7" screen wasn't about to fit so a single din with flip up screen was the only option.

I will be reworking the arrangement of device located in the dash and will look at swapping the position of the ac/heater controls and moving the radio over to that spot.

I may have to find a way to test it in my Triumph TR4 in the mean time...

Should be interesting

Brad
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Old 12-19-2015, 10:57 AM   #391
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I was unaware they made screens that could come out and flip up like that, very neat! The only issue you might run into with that type of screen/dash combination is the clearance for the screen being able to flip up properly. It looks like there is a little strip of molding that sticks out a littler further then where your radio would be mounted. It probably won't be an issue but hopefully it doesn't prevent the screen from reclining back into position fully. I say this because it looks like that screen has to go back a certain amount for the little legs to lock it into place, at least that is what it seems like in the picture. In the end I guess you could just have the radio mounted out a little but a flush fit would be nice .

Edit: Never mind! Looking at the pictures again it doesn't appear to stick out much further if any at all. Also looks like your dash has a slight slope backwards as it goes up which should work perfectly. When you are done that is going to be one cool added feature!

-Dane
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Old 12-19-2015, 01:17 PM   #392
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Dane, there is a possibility that I will have to pull the radio out of the dash slightly to get it to lock in place properly. Unfortunately this style of flip up radio is about the only option that I know of for getting a 7" video display in the dash.

I didn't want an under dash mount and if I put anything above the dash it would likely be some sort of display for a camera system. As it is I think this radio can be made to work without being to much of an eyes sore

Brad
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