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  #1  
Old 11-25-2010, 09:16 PM
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Default Rick's efi tank to carb plumbing? Will it work?

Here's what I was thinking for the 68 bird, let me know what you think. I've got a Rick's efi tank w/built in walbro-255 pump and -6an feed/return. Feed 3/8" soft line to filter, then soft line from filter to Aeromotive A2000 carbureted bypass regulator (set at approx. 6 psi), feed line from regulator to fuel log w/gauge feeding a race demon 750. Also a 3/8" return line from regulator back to tank, the regulator will be set up at the tank end of the car. I would use 5052-0 aluminum tubing for hard line, should I use an flares or compression? What do you think, will it work. Has anyone gone this rout with a carb? Are there any negatives? Motor is a pontiac 400 stroked to 461, should be alittle over 500 hp/550torq.
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Old 11-26-2010, 09:13 AM
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IMHO it Won't work dude! <said Spicolli syle>

Pump will be trying to make 40+ #'s of pressure at a high rate of flow.... and you're pushing that through a CARB regulator.... and trying to reduce it to 6#'s.

You'll end up with a bunch of cavitation and most likely a burned up pump.

Now -- there are "experts" on here that know far far more than I ever dreamed of... and have done more. So maybe one of them will jump in here and tell you that you can do this. But not IMHO....

You've got to talk to Ricks and see if they have a carb solution for your EFI tank/pump.
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Old 11-26-2010, 10:12 AM
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I've used their regulators that are specifically made for EFI pumps with a carb, and they worked fine. A regular carb type regulator will not work with an EFI pump, but the 13224 A1000 carb regulator or the A2000 should work fine.

Jody
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Old 11-26-2010, 11:57 AM
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Greg/Jody, thanks
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Old 11-26-2010, 12:06 PM
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In a return style it should be OK. I'd run -8 on the return even with the reducer at the tank unless it's a really short run.
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Old 11-26-2010, 12:21 PM
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Thanks Todd, as you know the tank came with -6 fittings, I wish they were -8. If I ran the return all the way to the motor I'd run 1/2" but I'm just keeping it at the tank. Contemplated changing out the fittings on the tank like you did but I'm at the point I just don't want to hassle with it if it will work as is... poor excuse, but I'll change it if there are problems.
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Old 11-26-2010, 12:32 PM
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Putting -8 on a tank with an internal pump and internally plumbed for -6 really wouldn't help you.... and -6 is plenty to feed a carb based little weenie motor like you're using...

You really just need to change the pump buddy.... do it right.
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Old 11-26-2010, 12:44 PM
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Quote:
Originally Posted by GregWeld View Post
Putting -8 on a tank with an internal pump and internally plumbed for -6 really wouldn't help you.... and -6 is plenty to feed a carb based little weenie motor like you're using...

You really just need to change the pump buddy.... do it right.
Yeh... I know, Dam-it
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Old 11-26-2010, 02:09 PM
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I would do Stainless line instead of the aluminum. I would use AN fittings through-out. They use a 37 degree flair- I have the tool if you need it. Greg gave me a hook-up for stainless- Pure Choice Motorsports. I got enough material for fuel and brake lines and all the clamps for under $300. get a grip of black anodized fittings and it will look really really sweet under that black car- Chris
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  #10  
Old 11-26-2010, 02:27 PM
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Ditto that Lenie --- I have all the 37* stuff for the MasterCool hydraulic flare kit I have.... It's loanable... with a modest deposit and first deed on your house and the car.
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