How long can a mech pump be run empty?
Thread Starter
Intermediate
Joined: Jun 2009
Posts: 41
Likes: 0
From: centreville va
How long can a mech pump be run empty?
How long can a mechanical pump survive if the car is run with an electric pump and the mechanical pump with the hoses disconnected ?
My pump was all over the place, pushing way too much pressure into the carb. it would have peaks of 15 or more psi and valleys of what looked to be 0.
Switched temporarily to a Mr gasket electric pump and i have 5 psi steady into the carb...
what are the ill effects i ll get from running the mechanical pump without gas in it ? will it cease?
Also seems that the gas gets heated pretty good with the electric and mechanical pump and can see air pockets in the glass filter.
My headers are close enough to the metal fuel lines that radiant heat is considerable and heats the gas. Should I worry about this ?
I don`t think this has caused any problems on fuel delivery.
Thanks !
My pump was all over the place, pushing way too much pressure into the carb. it would have peaks of 15 or more psi and valleys of what looked to be 0.
Switched temporarily to a Mr gasket electric pump and i have 5 psi steady into the carb...
what are the ill effects i ll get from running the mechanical pump without gas in it ? will it cease?
Also seems that the gas gets heated pretty good with the electric and mechanical pump and can see air pockets in the glass filter.
My headers are close enough to the metal fuel lines that radiant heat is considerable and heats the gas. Should I worry about this ?
I don`t think this has caused any problems on fuel delivery.
Thanks !
Burning Brakes
Joined: Aug 2005
Posts: 1,164
Likes: 1
From: Europe, France
That's what I would do, too.
About your problem of radiant heat, you can use ThemoTec products to insulate your fuel pipes :
http://www.summitracing.com/search/Brand/Thermo-Tec/
It's not very expensive but it is very efficient. Here is what I did with my braided hose and fuel lines :
Burning Brakes
Joined: Mar 2006
Posts: 915
Likes: 2
From: Lima, OH -- 69 L71 427/435hp
Get rid of the glass filter also.
Thread Starter
Intermediate
Joined: Jun 2009
Posts: 41
Likes: 0
From: centreville va
That's what I would do, too.
About your problem of radiant heat, you can use ThemoTec products to insulate your fuel pipes :
http://www.summitracing.com/search/Brand/Thermo-Tec/
It's not very expensive but it is very efficient. Here is what I did with my braided hose and fuel lines :
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GM came up with an excellent solution for vapour lock and incorporated it on all later C3s. It amazes me to see how many people defeat this system.
Three ports pumps/bypass lines are your friend.
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From: Plano TX
Thread Starter
Intermediate
Joined: Jun 2009
Posts: 41
Likes: 0
From: centreville va