Fuel Pump Question, tech question |
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Fuel Pump Question, tech question |
BadToTheBown |
Sep 7 2020, 08:42 PM
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#1
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Newbie Group: Members Posts: 36 Joined: 12-July 20 From: ABQ NM Member No.: 24,488 Region Association: None |
I'm the new proud owner of Tom's old track car (914/6 2.4) and I'm getting ready to club race it (SWMS in ABQ NM) and I have a strong gas smell in my garage with it in there and trying to run it down. I know the fuel cell bladder was well inspected and got new foam last year and is using 2 older (pre-2013?) Mallory electric fuel pumps (pics below). I've read the smell can come from them and I'm looking at rebuilding them but cannot tell which model they are and asking if a member recognizes which they are?
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brant |
Sep 9 2020, 02:07 PM
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#2
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914 Wizard Group: Members Posts: 11,623 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains |
I can't really tell the routing and plumbing from your pictures.
usually 2 pumps are used when there is a surge tank I have that set up in my -6 race car do you have a separate surge tank that one pump fills? on most systems... one pump fills the remote tank the other pump feeds the carbs from the remote tank the surge tank is used to prevent fuel slosh in the big tank that would cause pick up problems in a corner (it was created for FI systems that are more sensitive to pressure changes than the bowl of a carb. would be) each carb has 3 throats... but only 2 bowls a brass bolt, 10mm head... is the drain to the bowl the bowl is between two of the throats if it wasn't snowing.. I'd go get you a picture.. so draining the bowls: I use a butter container... small margarine or even yogurt container it has to be small to fit up tight to the screw... pull the screw, drain the fuel into the plastic container and put the screw back in. you don't want to over tighten these hollow brass screws... that thread into fragile castings |
BadToTheBown |
Sep 11 2020, 09:43 PM
Post
#3
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Newbie Group: Members Posts: 36 Joined: 12-July 20 From: ABQ NM Member No.: 24,488 Region Association: None |
I can't really tell the routing and plumbing from your pictures. usually 2 pumps are used when there is a surge tank I have that set up in my -6 race car do you have a separate surge tank that one pump fills? on most systems... one pump fills the remote tank the other pump feeds the carbs from the remote tank the surge tank is used to prevent fuel slosh in the big tank that would cause pick up problems in a corner (it was created for FI systems that are more sensitive to pressure changes than the bowl of a carb. would be) each carb has 3 throats... but only 2 bowls a brass bolt, 10mm head... is the drain to the bowl the bowl is between two of the throats if it wasn't snowing.. I'd go get you a picture.. so draining the bowls: I use a butter container... small margarine or even yogurt container it has to be small to fit up tight to the screw... pull the screw, drain the fuel into the plastic container and put the screw back in. you don't want to over tighten these hollow brass screws... that thread into fragile castings Saw you guys got snow. Sandia down here did too. I'm in the foothills, so just rain. I'll find it, thanx for pointing me. I'm going to map out the oil cooling and fuel systems and I'll look for a surge tank... |
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