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Corvette Fuel Injection & Electronic Engine Control: 1982 through 2001
Corvette Fuel Injection & Electronic Engine Control: 1982 through 2001



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2/23/13 7:18pm - Original Message: 'Electric fuel pump on a 68 'AGAIN''
rlu1968
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Gordonvillle, TX - USA

Vette(s):
1968 Roadster 427

Joined: 11/28/2003
Posts: 222
In 2010 I had some good information on installing a electric fuel pump on my 68. (non return line to gas tank) and problems with vapor lock. This was from Lifetime member CTMcCloskey. I got busy with repainting and new interior and covt. top. and other life issues.
  Now I want to install this pump and would like to know if I can use the same stock fuel line. Or do I need to replace this line too. Which looks to be a difficult task. Also there is hardly any room to mount a fuel pump under the gas tank other than just above the muffler on the frame. Which could be problems with the heat from the muffler. Other than removing the spare tire cover altogether I cannot see a good place to put the elect. fuel pump.  Does anyone have pictures of their set up. Holley fuel pump instructions show a fuel filter, the fuel pump, another fuel filter all under the tank, and then on to the regulator at the carb. It looks like to have all these filters at the fuel pump then I will have to remove the spare tire cover completely ever so often so as to change these filters, and thus a shut off gas valve should be the first step, or I would have to drain the gas tank.  So how do you get all this stuff under or near the gas tank??


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2/26/13 12:04pm - Reply: 'Re: Electric fuel pump on a 68 'AGAIN''
knotacare
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Newark, DE - USA

Vette(s):
1968 Conv, 454HO,500HP-600TQ, TKO-600,3:70 HD rear,hotrod air, custom paint & suspension,1973 Ruby Red,T-top, 383 Stroker, TK)-500,frame off restro, 1977 Yellow (1 of 51 ) L-48 4 spd, 99% original.

Joined: 7/26/2004
Posts: 453
This is the setup on my 73 ..same as the 68






|UPDATED|2/26/2013 10:04:20 AM (AZT)|/UPDATED|


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2/26/13 12:33pm - Reply: 'Re: Electric fuel pump on a 68 'AGAIN''
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19454
That's a nice set-up, but....you're not running the spare tire tub. Would it clear if you wanted to install it?

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Joel Adams
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2/26/13 12:50pm - Reply: 'Re: Electric fuel pump on a 68 'AGAIN''
knotacare
Former Member
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Newark, DE - USA

Vette(s):
1968 Conv, 454HO,500HP-600TQ, TKO-600,3:70 HD rear,hotrod air, custom paint & suspension,1973 Ruby Red,T-top, 383 Stroker, TK)-500,frame off restro, 1977 Yellow (1 of 51 ) L-48 4 spd, 99% original.

Joined: 7/26/2004
Posts: 453
I'm not sure , but the spare tire doesn't do me any good as the tires on the 68 & 73 are oversize.  I like looking at the suspension rather than that nasty looking tub..

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2/26/13 6:47pm - Reply: 'Re: Electric fuel pump on a 68 'AGAIN''
rlu1968
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Gordonvillle, TX - USA

Vette(s):
1968 Roadster 427

Joined: 11/28/2003
Posts: 222

Thanks for the picture and I had measured that area for the fuel pump but I want to keep my spare tire cover. And the only other area is close to the muffler. I like the bracket set up!


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2/27/13 12:41pm - Reply: 'Re: Electric fuel pump on a 68 'AGAIN''
knotacare
Former Member
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Newark, DE - USA

Vette(s):
1968 Conv, 454HO,500HP-600TQ, TKO-600,3:70 HD rear,hotrod air, custom paint & suspension,1973 Ruby Red,T-top, 383 Stroker, TK)-500,frame off restro, 1977 Yellow (1 of 51 ) L-48 4 spd, 99% original.

Joined: 7/26/2004
Posts: 453
Here's a better picture, had to move a car to get under there. This should show you the routing of the hoses. I attached the outlet hose of the fuel pump to the existing line on the frame. As long as you are using a low pressure fuel pump (not fuel injection) you should be OK.  Especially since the 68 has a vented gas cap.


(modified large image to link-aapple)


|UPDATED|2/27/2013 10:41:36 AM (AZT)|/UPDATED|


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2/27/13 10:46am - Reply: 'Re: Electric fuel pump on a 68 'AGAIN''
rlu1968
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Gordonvillle, TX - USA

Vette(s):
1968 Roadster 427

Joined: 11/28/2003
Posts: 222
Great that pretty well answers my question on using the existing fuel line, and the picture really helped. I will probably have to attach the fuel pump with a home made bracket on the outside frame rail up near the taillight housing, and put the filter somewhere that I will be able to change it, without removing the spare tire cover. 
I have been reading all the fail safe methods to shut the fuel off if you were to have a collision. There are so many different sensors, relays, to shut the fuel off in a emergency.  Some will shut off the fuel pump if the oil pump is not working, others will shut it off when the ignition is turned off,  if the engine is running and you are in a collision and can't turn it off. Inertia switch etc. etc. etc.  Revolution Electronics has a controller that will not allow the pump to run if the engine is not running. But isn't that what the replay that comes with the electric fuel pump suppose to do. I can't use the oil pressure switch, because the 68 did not have one. ??????? 


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2/27/13 4:17pm - Reply: 'Re: Electric fuel pump on a 68 'AGAIN''
rraider1
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Woodland, WA - USA

Vette(s):
1977 T-Top,350,Auto Black Ruby Pearl,Steeroids R&P conversion

Joined: 10/14/2003
Posts: 1152
Just for the info Why cant the fuel pump be located in the engine bay?

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Bob R
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2/27/13 10:23pm - Reply: 'Re: Electric fuel pump on a 68 'AGAIN''
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19454
It can, but there are a few really good reasons not to.
First, most 'lectric pumps are designed to push fuel, not pull it. So they are more efficient, and will last longer the closer to the fuel tank they are.
Secondly, 'lectric pumps mounted in the engine bay tend to "vapor lock" easily. Engine heat can really do a number on them. This is mainly due to them being more suited to pushing fuel than sucking it.


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Joel Adams
C3VR Lifetime Member #56    
My Link


(click for Texas-sized view!)
             NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
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3/1/13 12:11am - Reply: 'Re: Electric fuel pump on a 68 'AGAIN''
rraider1
Former Member
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Woodland, WA - USA

Vette(s):
1977 T-Top,350,Auto Black Ruby Pearl,Steeroids R&P conversion

Joined: 10/14/2003
Posts: 1152
Thanks I thought they just put them back their to make it hard for us to chngeWacko

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Bob R
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 Forums -> C3 Fuel, Emission Control, and Exhaust Systems
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