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Thread: Carb mod: GM fuel pump re-purposed as a fuel pickup.

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    Uncensored Hypocrite stevedmc's Avatar
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    Carb mod: GM fuel pump re-purposed as a fuel pickup.

    So my fuel pump boot finally bit the dust and is leaking.

    Instead of spending $50 on a new fuel pump boot, I've decided to drop in a GM fuel pump, similar to what DMCH is selling. I won't be using it as a fuel pump, but as a pickup assembly instead. My low pressure fuel pump (carburetor setup) is mounted outside of the tank.

    Today I received an el cheapo fuel pump that I ordered from eBay.

    http://www.ebay.com/itm/331532141530...BIDX%3AIT#rwid

    It fits nicely in the tank, but I need that fancy smancy clamp that Houston includes with their new fuel pumps.

    Does anyone have a clamp they aren't using or a clue where I can pickup the same clamp? From what I understand, it does more than just wrap around the tank insert. It actually presses the lip of the fuel pump against the lip of the fuel tank, resulting in a nice snug fit that won't leak.
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    Quote Originally Posted by stevedmc View Post
    So my fuel pump boot finally bit the dust and is leaking.

    Instead of spending $50 on a new fuel pump boot, I've decided to drop in a GM fuel pump, similar to what DMCH is selling. I won't be using it as a fuel pump, but as a pickup assembly instead. My low pressure fuel pump (carburetor setup) is mounted outside of the tank.

    Today I received an el cheapo fuel pump that I ordered from eBay.

    http://www.ebay.com/itm/331532141530...BIDX%3AIT#rwid

    It fits nicely in the tank, but I need that fancy smancy clamp that Houston includes with their new fuel pumps.

    Does anyone have a clamp they aren't using or a clue where I can pickup the same clamp? From what I understand, it does more than just wrap around the tank insert. It actually presses the lip of the fuel pump against the lip of the fuel tank, resulting in a nice snug fit that won't leak.
    Is it just a big hose clamp? If so, I might have one.

  3. #3
    Uncensored Hypocrite stevedmc's Avatar
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    Its a little fancier than a big hose clamp. My first thought was I would just reuse my old fuel pump boot clamp, then I saw this video. Fast forward to 8:45 to see what I'm talking about. I really don't want to spend $400 on a fuel pump just so I can get a $20 clamp.

    https://youtu.be/W2vaigaomog?t=525
    Rest assured, we have a backup of Farrar's car blog and it will be restored in the near future. (Steve Rice - March 2016)
    Rest assured, we have a backup of Shep's posts and all of them will be restored in the near future. (Steve Rice - March 2017)

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    Quote Originally Posted by stevedmc View Post
    Its a little fancier than a big hose clamp.
    Elitist....

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    KJET_SUX FABombjoy's Avatar
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    You're looking for a V-band clamp.

    Does the new module fit in the opening well? The DMCH module has a rubber seal/gasket to make up the difference like the one shown here:

    https://www.carid.com/ic/carter/fuel.../p74663m_6.jpg

    Part of the magic of these module baffles staying full might rely on flow from the return line or fuel bypassing the internal regulator. Do you know if these work well purely as pickups?
    -Luke / 10270 / Superman 3 Turbo Kit

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    Uncensored Hypocrite stevedmc's Avatar
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    Quote Originally Posted by FABombjoy View Post
    You're looking for a V-band clamp.

    Does the new module fit in the opening well? The DMCH module has a rubber seal/gasket to make up the difference like the one shown here:

    https://www.carid.com/ic/carter/fuel.../p74663m_6.jpg

    Part of the magic of these module baffles staying full might rely on flow from the return line or fuel bypassing the internal regulator. Do you know if these work well purely as pickups?
    The module came with a similar rubber gasket and it fits pretty dang perfect. My only complaint, is the cheapo fuel pump I purchased has a hole on the top (for a sensor I think) that I will need to seal. Well, the other complaint is that it takes a bunch of pressure to compress the springs for it to be a snug fit. I'll probably see if I can snip away some of the springs so it will be easier to compress.

    I don't think I need a return line to fill the baffle. When I took the thing out of the tank it was full of fuel. I actually had to tip it upside down just to empty its integrated baffle.

    I've no clue if it will work purely as a pickup. Thats what this experiment is all about. If it does work, those of us with carburetors can spend $25 for a fuel pump every decade or so (if fuel manages to eat plastic) instead of buying a rubber boot every 5 years for $50.
    Rest assured, we have a backup of Farrar's car blog and it will be restored in the near future. (Steve Rice - March 2016)
    Rest assured, we have a backup of Shep's posts and all of them will be restored in the near future. (Steve Rice - March 2017)

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    KJET_SUX FABombjoy's Avatar
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    It won't be super duper cheap but a plain old v-band clamp is what my module came with.
    -Luke / 10270 / Superman 3 Turbo Kit

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    Uncensored Hypocrite stevedmc's Avatar
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    I don't mind spending the cash on a v-band clamp since it is a one time purchase. Providing this works, I'll never have to buy another $50 fuel pump boot again.

    Looks like there are several options for this stupid clamp. Its an exhaust clamp of all things. Thanks for the advice.



    https://www.amazon.com/Ticon-Industr...h+v-band+clamp

    http://www.ebay.com/itm/Universal-4I...ZYUfGc&vxp=mtr

    http://www.oreillyauto.com/site/c/de...5149&ppt=C2440
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    Uncensored Hypocrite stevedmc's Avatar
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    It looks like I can get a sensor to plug that top hole for $8. I was going to make a trip to ACE hardware for a rubber plug, but at $8 for a sensor that snaps into place its a no brainer.

    http://www.ebay.com/itm/172447944407

    I just might piece this whole thing together for less than what I would cost me to get a $50 rubber boot.
    Rest assured, we have a backup of Farrar's car blog and it will be restored in the near future. (Steve Rice - March 2016)
    Rest assured, we have a backup of Shep's posts and all of them will be restored in the near future. (Steve Rice - March 2017)

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    Quote Originally Posted by stevedmc View Post
    It looks like I can get a sensor to plug that top hole for $8. I was going to make a trip to ACE hardware for a rubber plug, but at $8 for a sensor that snaps into place its a no brainer.

    http://www.ebay.com/itm/172447944407

    I just might piece this whole thing together for less than what I would cost me to get a $50 rubber boot.
    I wish you'd post some damn pics so I can follow along with what's going on here....

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