DO YOU USE A RETURN FUEL LINE

[ACUDANUT]

Actually most carbs work better at 5 psi's.  I have had problems with my Holley's that have 7.5  psi's going into them. We all have different luck it seems, regardless of the carb and pump..

[tan top]

I'm using a Holley Red Pump.  I wonder what kind of shape the inside of the original return line is in.  Got any idea on prices for a new one. ? Thanks  

you can get shaped lines OEM style  , in plain steel  & stainless steel  ,  stainless is roughly double the price ,    if your car  , is not a stock etc , ( you have already a electric fuel pump ,  I would consider bending up your own vapour line  , from a reel of hard line below  ,  ( that what I done )   lot cheaper than a pre shaped line  , if your not going with a OEM resto  ,   second link  ,    I used copper line first easier to bend , to get the shapes ,  wernt sure how the stock fuel & vapour lines would fit round my added torque boxes &  2x2" x 1/4 " box frame connectors .  

 http://www.summitracing.com/int/search/part-type/tubing/tubing-material/steel?N=4294948076%2B4294949974&SortBy=BestKeywordMatch&SortOrder=Ascending&keyword=hard%20line


http://www.classicindustries.com/product/mopar/b-body-charger/parts/mf532a.html

http://www.summitracing.com/int/search/part-type/tubing/tubing-material/steel?N=4294948076%2B4294949974&SortBy=BestKeywordMatch&SortOrder=Ascending&keyword=hard%20line

[ACUDANUT]

The second option sounds right for me. Thanks

[303 Mopar]

I installed a Mallory 4110 pump on my '71 Challenger and it was very quiet.  I measured the 6.5-7 psi so I did not install a regulator to my Quick Fuel carb and it ran very strong.

http://www.summitracing.com/parts/maa-4110

[Charger-Bodie]

I installed a Mallory 4110 pump on my '71 Challenger and it was very quiet.  I measured the 6.5-7 psi so I did not install a regulator to my Quick Fuel carb and it ran very strong.

http://www.summitracing.com/parts/maa-4110

I have the same on my hemi.

[Jaysick]

I installed a Mallory 4110 pump on my '71 Challenger and it was very quiet.  I measured the 6.5-7 psi so I did not install a regulator to my Quick Fuel carb and it ran very strong.

http://www.summitracing.com/parts/maa-4110

Ive been wanting to get one but im worried about how loud it will be. 
Does anyone know how this compares to a holly red as far as noise goes? 

[303 Mopar]

I installed a Mallory 4110 pump on my '71 Challenger and it was very quiet.  I measured the 6.5-7 psi so I did not install a regulator to my Quick Fuel carb and it ran very strong.

http://www.summitracing.com/parts/maa-4110

Ive been wanting to get one but im worried about how loud it will be. 
Does anyone know how this compares to a holly red as far as noise goes? 

From the research I did, this was one of the quietest pumps on the market, including the Holley red.  On my Challenger, you actually had to go to the back of the car on the drivers side and be still to hear it.  I would not hesitate to buy this pump again.

[Charger-Bodie]

The Mallory is very quiet as far as electric pumps go.

[ACUDANUT]

The key to a quieter electrical pump is the thickness of the rubber against the frame. (less vibration)

[Charger-Bodie]

The key to a quieter electrical pump is the thickness of the rubber against the frame. (less vibration)

This is a very true statement. But the mallory ones are a different design (non-vane style i think) and is just quieter by desighn as well.

[firefighter3931]

The Mallory pumps are quieter due to the design as mentioned by Brian in the post above. The quieter operation is due to the gerator pump which is very similar to the rotors in a BB oil pump. The rotary vane pumps are noisier and more prone to cavitation than the gerator style. 

Big fan of the Mallory pumps here....I have the 250 GPH model in my car 

The 110 is an excellent street pump and can be run without a regulator deadheaded to the carb....and it's one of the quietest pumps out there 

The Holley pumps are not even close in terms of noise output 



Ron

[ACUDANUT]

Well, on a Holley, at least you can hear it working. 

[Jaysick]

The key to a quieter electrical pump is the thickness of the rubber against the frame. (less vibration)

This is a very true statement. But the mallory ones are a different design (non-vane style i think) and is just quieter by desighn as well.

Yeah this is what I was thinking too.  A lot of the bracket i see, look like the rubber around the ignition coil looking bracket is really thin.  The Mallory seems to come with a good looking bracket, really beefy looking.

[Jaysick]

The Mallory pumps are quieter due to the design as mentioned by Brian in the post above. The quieter operation is due to the gerator pump which is very similar to the rotors in a BB oil pump. The rotary vane pumps are noisier and more prone to cavitation than the gerator style.  

Big fan of the Mallory pumps here....I have the 250 GPH model in my car  

The 110 is an excellent street pump and can be run without a regulator deadheaded to the carb....and it's one of the quietest pumps out there  

The Holley pumps are not even close in terms of noise output  



Ron

Im not even gonna risk it.  The tinkerer in me wants to try and get a cheaper one and make it quieter but this technical explanation is enough.  When I go cheap I usually regret it..