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post #1 of (permalink) Old 11-25-2002, 08:48 AM Thread Starter
 
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Howell tbi fuel pump and filter

Anyone out there with a Howell tbi kit that can tell me what pump and filter they use? I'm building a gm tbi system for my jeep and would like some direction on what pump is a good value and dependable. Can't remember what I heard about the Walbro, which I think Howell uses. Heard that a "Master E2000" is good, but they don't seem available here in Canada or even online.

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Tim
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post #2 of (permalink) Old 11-25-2002, 09:26 AM
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Re: Howell tbi fuel pump and filter

The filter is a generic "fram" type metal inline filter. The pump is their own brand. I am sure any good electric pump will work.

Later,
Tom
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post #3 of (permalink) Old 11-25-2002, 09:39 AM
 
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Re: Howell tbi fuel pump and filter

The filter just has a 5/16" barb for a rubber hose on each end. There are serveral out there that will work, just go to the parts store and open all the boxes.

The pump that came with mine has no branding or other markings, so I'm not sure who makes it. It's basically just a universal fuel injection pump that puts out 35 psi or so. I've seen these at the parts stores before.(they usually keep them behind the counter)
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post #4 of (permalink) Old 11-27-2002, 08:36 PM
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Re: Howell tbi fuel pump and filter

The Howell pump on my system has no markings either, but it puts out an internaly regulated 12 psi, NOT 35 like a MPI system needs. If you use a higher pressure pump, use a seperate regulator and a gauge to adjust it down from the pumps high pressure.
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post #5 of (permalink) Old 11-28-2002, 01:39 AM
 
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Re: Howell tbi fuel pump and filter

12 PSI is what is needed by the actual injectors. The 12 PSI is produced by a regulator in the throttle body itself.
The pump supplies a higher pressure.
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post #6 of (permalink) Old 11-28-2002, 07:23 AM Thread Starter
 
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Re: Howell tbi fuel pump and filter

Thanks for the input. There was a really limited selection of pumps available here locally, so I bought a Carter P5001, its a univeral pump that is listed in their catalogue as designed for conversions from carb to tbi.

Did you simply cut the steel line to install the pump and slip hose to connect it to the pump? I'm wondering if I shouldn't be flaring the steel line ends to prevent a disasterous event like the hose slipping off.

And I ask this as a question, it is filter first then pump right? Any thoughts on pump mounting location? I know to keep it close to the tank. I'm figuring on the passenger side frame rail inside the frame. I'd like to have done it protected by the skid plate, but I hate working in tight spaces to hook up the hoses and tighten the clamps. What kind of hose clamps does Howell have you use? Screw type or spring?

Does Howell have you install an oil pressure switch to kill the pump if the engine dies? Any safety concerns? I know some oem systems have an inertial shut off, so in an accident the pump is shut down.

Thanks,
Tim
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post #7 of (permalink) Old 11-28-2002, 11:45 AM
 
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Re: Howell tbi fuel pump and filter

Yes, you need to flare the ends of the steel to keep the hose on. I put mine on the frame right in front of the tank. Just cut a foot or so out of the steel and flared the ends. The pump pushes better than it pulls, so you want it as close to the frame as possible.
The filter should go before the pump to catch any particles before they reach the pump. My kit had screw clamps. I wouldn't use spring clamps on a fuel line - those things are kinda scary IMO when they're not on fuel lines.
You don't need an oil pressure switch. If everything is wired properly, the ECM will kill the pump if it loses the tach signal from the distributor.
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post #8 of (permalink) Old 11-28-2002, 01:07 PM Thread Starter
 
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Re: Howell tbi fuel pump and filter

Thanks for the help.
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