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Old 11-21-2015, 05:42 AM   #351
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Originally Posted by jm2 View Post
ISSPRO makes a pretty good product, and their sending units are built with a tubular style like this RA9512-ISS - ISSPRO Inc. ,

or the traditional style like this R8926 - ISSPRO Inc.

if I were having a 'custom' sized tank like Martin, the tubular style length can be specced to match the depth of the tank.
The problem with the after market senders is the GM sending unit is a combined unit with the suction and return pipes as well as the sending unit. If I use one of the aftermarket senders then there is no way to get fuel out of the tank!

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one of the previous owner's of our coach removed the mechanical fuel pump, and installed an external, electric fuel pump.
I don't know about Martin's but mine had an electric pump right beside the tank and just forward of the switching valve that selected front or rear tank. I plan on installing a replacement pump in the same location.

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my other thought and question, if I were dropping or replacing my own custom (supposed to be 45 gallons) tank, is it worth installing an in the tank electric pump?

best,
My front tank is the OEM 30 gallon tank. I don't have any plans on upgrading that tank. I believe Martin has the same thoughts but I'm not certain about that.

I think the only reason to have a pump in the tank is if you're planning on installing EFI which I am not. I've already spent way to much on this rig and I don't think the cost of EFI could be justified considering I've got a new engine with new performance manifold and carburetor. EFI would be nice though wouldn't it!

Brad
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Old 11-21-2015, 06:09 AM   #352
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Originally Posted by bkahler View Post

I don't know about Martin's but mine had an electric pump right beside the tank and just forward of the switching valve that selected front or rear tank. I plan on installing a replacement pump in the same location.

Brad
Hmmm.....fuel pump, that's another subject.

Currently I have the original mechanical pump (with the bypass/return) which certainly doesn't help getting Bella started if I haven't run the engine for a few days. Coupled with the tank leaks and a large capacity separator filter in-line equals lots of cranking when starting.
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Old 11-21-2015, 06:25 AM   #353
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Originally Posted by bkahler View Post
...

I think the only reason to have a pump in the tank is if you're planning on installing EFI which I am not. I've already spent way to much on this rig and I don't think the cost of EFI could be justified considering I've got a new engine with new performance manifold and carburetor. EFI would be nice though wouldn't it!

Brad
But why in the tank for EFI. My EFI system has a low pressure pump just outside of the tank for easy accessibility. After dropping these tanks a few times, you get kinda tired of it, especially the 80 gal ones
The high pressure electric pump is located just on the engine side of a heavy duty collector tank.
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Old 11-21-2015, 06:27 AM   #354
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Martin, I would definitely install an electric fuel pump somewhere near the fuel tank. That will help push fuel up to the carburetor.

On the longer coaches Airstream installed fuel pumps close to the tank to help get fuel up to the carburetor and to also overcome vapor lock issues.

Not that expensive or difficult to do.

Brad
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Old 11-21-2015, 06:37 AM   #355
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Originally Posted by martin300662 View Post
Hmmm.....fuel pump, that's another subject.

Currently I have the original mechanical pump (with the bypass/return) which certainly doesn't help getting Bella started if I haven't run the engine for a few days. Coupled with the tank leaks and a large capacity separator filter in-line equals lots of cranking when starting.
I am 100% with Brad on the inexpensive addition of a rear electric fuel pump.
I added a dash switch on my 79 28', only to use the pump prior to starting and on long inclines.
Once, when climbing a 10k' pass, the engine started to sputter. One flip of the switch "zoomed" me up the pass.
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Old 11-21-2015, 03:08 PM   #356
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On the 310 that I had the rear electric fuel pump was connected to the ignition switch so it ran anytime the switch was turned on. I know it never starved for fuel on grades with a 14' trailer and we climbed a lot of grades with it!
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Old 12-08-2015, 02:03 PM   #357
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Well bummer. I took my two fuel tanks over to the radiator shop to have them dipped and after looking over the OEM main tank he said it's shot and nothing he could do for it

So that means I need to figure out what combination of tank and sender that I want to buy to replace it.

As for the custom made rear tank it's to big to fit in his tank for cleaning

He suggested pouring in a couple gallons of Muriatic acid, sealing the openings and rolling the tank around to get the acid to clean out the inside. He's apparently used this procedure before on some tanks with success. After that's done I would need to take it back to him so he can seal the inside with sealer.

I'm not exactly looking forward to dealing with a tank that has a couple of gallons of acid in it but it would probably be cheaper than having a custom tank made. However I still might look into that alternative just so I have a price comparison to work with.

Oh well, back to looking at tanks and senders

Brad
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Old 12-09-2015, 08:26 AM   #358
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That is a bummer! If he is suggesting Muriatic Acid I am assuming it was rusting on the inside? As for dealing with the acid I believe Baking Soda will neutralize it so all you would need is a bucket with a box or two of baking soda to pour the mixture into when done.

If you know the dimensions off the top of your head of the propane tank, I can help search the web or even some local shops around here for some possible replacements.

-Dane
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Old 12-09-2015, 09:07 AM   #359
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Dane, this tank is my rear gasoline fuel tank.

It is rusty on the inside, however the tank is made from some fairly thick sheet metal so if I can eliminate the rust I should be able to salvage the tank.

Barring that I'll possibly check into a custom made tank although I'm leery of the cost for one. But I really would like having the extra fuel on board for long trips.

I have found several marine fuel tanks that are somewhat close in size but I don't know if they will work or not as the filler neck is always in the wrong location.

Thanks!

Brad
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Old 12-09-2015, 09:29 AM   #360
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Doh! I was reading Elisa's thread about her propane tank and then switched to this one after and my brain didn't switch over. Sorry about that, I remember you've been hunting the right sending unit down and contemplating on what to do with the tank for a little while now. Ignore my scattered brain.

-Dane
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Old 12-09-2015, 09:31 AM   #361
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Doh! I was reading Elisa's thread about her propane tank and then switched to this one after and my brain didn't switch over. Sorry about that, I remember you've been hunting the right sending unit down and contemplating on what to do with the tank for a little while now. Ignore my scattered brain.

-Dane
My guess is you have other things on your mind at the moment

I ordered a new sending unit last night from Mill Supply. Once it comes in I plan on comparing the opening size of the new one with the tanks being sold on ebay. If they match I'll buy a tank from ebay instead of Mill Supply. Price difference is about $100. Be nice to save the money if I can

Brad
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Old 12-09-2015, 03:47 PM   #362
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Originally Posted by bkahler View Post
My guess is you have other things on your mind at the moment

I ordered a new sending unit last night from Mill Supply. Once it comes in I plan on comparing the opening size of the new one with the tanks being sold on ebay. If they match I'll buy a tank from ebay instead of Mill Supply. Price difference is about $100. Be nice to save the money if I can

Brad
I think I maybe following the same route Brad. My tank has been at the specialist for nearly 4 weeks now, so I am expecting a call any day to say 'sorry, we couldn't revive it'.
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Old 12-09-2015, 04:02 PM   #363
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larger fuel tank

the second owner of our coach replaced the factory tank with a single tank with a nominal capacity of 43 gallons. and, it doesn't hang below the body!

I've pumped as many as 42 gallons to fill it, so, it's about "as advertised".

i can try to take the dimensions and a picture on the weekend if that would be useful?

best,
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Old 12-09-2015, 04:02 PM   #364
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I think I maybe following the same route Brad. My tank has been at the specialist for nearly 4 weeks now, so I am expecting a call any day to say 'sorry, we couldn't revive it'.
That would be a bummer. The extra capacity of your tank would sure eliminate the hassle I'm going through trying to get my auxiliary rear tank resurrected.
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