tomgregory2000
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| posted on 12/3/09 at 08:31 PM |
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Fuel regulator
Evening all
I am having a problem with my DHLA carbs and fuel pump, i am sure the pressure is to high for the carbs at 4.2psi and was wondering if
this pressure regulator is any good?
Many thanks
Tommy
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flak monkey
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| posted on 12/3/09 at 08:46 PM |
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Thats the sort most people use.
Had one on my carbs and it worked well. They often come up on ebay quite cheap.
Cheers,
David
Sera
http://www.motosera.com
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britishtrident
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| posted on 12/3/09 at 08:58 PM |
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You should never depend on any pressure regulator that dosen't bleed off excess pressure to return line.
You would be wiser to get a new pump and sell your old one.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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flak monkey
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| posted on 12/3/09 at 09:02 PM |
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quote:
Originally posted by britishtrident
You should never depend on any pressure regulator that dosen't bleed off excess pressure to return line.
You would be wiser to get a new pump and sell your old one.
You dont need a return line with DCOE/DHLA carbs. I have never seen a set up using one.
The regulators are a very simple diaphragm type. Even the expensive regulators dont bleed off the the return line.
The electrical pumps idle once the float chambers on the carbs are full.
Sera
http://www.motosera.com
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Paul TigerB6
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| posted on 12/3/09 at 09:04 PM |
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As per what David says - exactly my set-up and never had an issue. 2.5psi should be fine with your DHLA's
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tomgregory2000
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| posted on 12/3/09 at 09:13 PM |
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thanks guys
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britishtrident
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| posted on 12/3/09 at 09:14 PM |
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That type of regulator can only wear fail and give excess pressure --- you will never see this type of regulator used by a vehicle manufacturer. OEM
regulators work on a bleed off principal which is fail safe.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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flak monkey
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| posted on 12/3/09 at 09:23 PM |
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quote:
Originally posted by britishtrident
That type of regulator can only wear fail and give excess pressure --- you will never see this type of regulator used by a vehicle manufacturer. OEM
regulators work on a bleed off principal which is fail safe.
We arent OEMs building cars for 200,000 mile lives and 15,000mile service intervals though....
Injection reulators work in the same way as that one too. Even ones fitted in OEM applications, only they are fitted on the return side anyway. They
are still a diaphragm type pressure regulator.
Sera
http://www.motosera.com
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Schrodinger
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| posted on 13/3/09 at 10:37 AM |
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If you have a bleed off type regulator the pump will be working at full chat all of the time, just what the low pressure pumps don't need.
Equally the carb type cars that I had in the past never had fuel returns so it isn't an oem type solution to carb based vehicles.
Keith
Aviemore
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