The Cal-look Lounge
Welcome, Guest. Please login or register.
Did you miss your activation email?
March 29, 2024, 15:53:58 pm

Login with username, password and session length
Thank you for your support!
Search:     Advanced search
350646 Posts in 28563 Topics by 6811 Members
Latest Member: Bren
* Home This Year's European Top 20 lists All Time European Top 20 lists Search Login Register
+  The Cal-look Lounge
|-+  Cal-look/High Performance
| |-+  Pure racing
| | |-+  electric fuel pump advice
« previous next »
Pages: [1] Print
Author Topic: electric fuel pump advice  (Read 3637 times)
andy54
Full Member
***
Posts: 117


« on: May 24, 2016, 22:19:28 pm »

hi people
looking to up grade my electric fuel pump as the ol cb 3.5lb is not up to the job as its not keeping up with the carbs.was looking at getting a mallory with areomotive reg or something along those lines.
motor is 2276cc clay smith cam like fk89 44/37 heads not sure the compression 10/1.. 48 i.d.a's any advice would be very good


thanks for looking andy
Logged
leec
Hero Member
*****
Posts: 2584


« Reply #1 on: May 25, 2016, 06:54:32 am »

I run a cb pump with very similar motor spec. Why do you think it's not keeping up with the carbs?
Logged
richie
Hero Member
*****
Posts: 5620



« Reply #2 on: May 25, 2016, 07:03:21 am »

hi people
looking to up grade my electric fuel pump as the ol cb 3.5lb is not up to the job as its not keeping up with the carbs.was looking at getting a mallory with areomotive reg or something along those lines.
motor is 2276cc clay smith cam like fk89 44/37 heads not sure the compression 10/1.. 48 i.d.a's any advice would be very good


thanks for looking andy

Andy

have the carbs had the float bowl mod to enlarge it? if not that is where I would start, its simple enough mod

cheers Richie
Logged

Cars are supposed to be driven, not just talked about!!!   


Good parts might be expensive but good advice is priceless Wink
67_looker
Newbie
*
Posts: 4



« Reply #3 on: May 25, 2016, 20:48:07 pm »

The CB 3 1/2 lbs. rotary fuel pump #3193 supports 250hp with no problems. My friend and I have tested it at the Autobahn…  Grin 140mph with 3.0 Needle Valves and enlarged float bowls.
« Last Edit: May 25, 2016, 20:56:42 pm by 67_looker » Logged
andy54
Full Member
***
Posts: 117


« Reply #4 on: May 25, 2016, 23:09:42 pm »

hi people
looking to up grade my electric fuel pump as the ol cb 3.5lb is not up to the job as its not keeping up with the carbs.was looking at getting a mallory with areomotive reg or something along those lines.
motor is 2276cc clay smith cam like fk89 44/37 heads not sure the compression 10/1.. 48 i.d.a's any advice would be very good


thanks for looking andy

Andy

have the carbs had the float bowl mod to enlarge it? if not that is where I would start, its simple enough mod

cheers Richie
hi richie and others
no the only mods to the carbs are 3rd progression hole and jpm stacks and vents.there is a 8mm hard line from the tank to the reg.when the car was on the rollers jim said the fuel pressure was dropping right off at high rpm range.also he seemed to think the float bowls were emptying too.
also the reg is just now a flash t pice as it was a cheap holly one..

cheers andy
Logged
dragvw2180
Sr. Member
****
Posts: 304



« Reply #5 on: May 26, 2016, 01:47:10 am »

 Hey Andy,
             The float bowl mod is merely opening the well that looks like another accelerator pump well to gain a few more cc's of fuel storage. I have used Holley fuel pressure regulators with no problems , in fact I have one on my turbo car now .  Make sure your fuel tank vent system is working properly also. Mike McCarthy
Logged
leec
Hero Member
*****
Posts: 2584


« Reply #6 on: May 26, 2016, 07:12:58 am »

Replace the reg with just a normal tee piece?
Logged
kever65
Jr. Member
**
Posts: 56


« Reply #7 on: May 26, 2016, 19:11:53 pm »

Make sure your fuel tank vent system is working properly, had same issue before.
Logged
andy54
Full Member
***
Posts: 117


« Reply #8 on: May 29, 2016, 13:55:16 pm »

thanks guys for the info.the old reg is now just a flash t pice as the cb pump i think has a built in reg.my fuel tank in the car is a stock 54oval tank with the 100mm cap so thats the only vent is there.
so you would say leave the pump at just get the float bowels made bigger???


cheers andy
Logged
Pages: [1] Print 
« previous next »
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.21 | SMF © 2015, Simple Machines Valid XHTML 1.0! Valid CSS!