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Old 29-07-2013, 04:25 PM   #1
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Fuel regulatior xr2

Hi can you help? We have an old xr2 that had an old holly fuel pump and regulatior attached witch packed up throw old age!! So we have bought a new holly pump and put an inline fuel regulatior but it seems to be causing havoc with over fueling and flooding etc! Dose it have to be a pacific regulatior???? And also could we of damaged the carbs in any way???? Thanks for your time! Rob
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Old 29-07-2013, 06:05 PM   #2
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I gather you have a fuel pressure gauge? What are your readings?
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Old 29-07-2013, 08:17 PM   #3
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Hi we have a manual regulatior with settings from 1to5/12 psi we were told to set at 5psi but it must push 5 psi as soon as the key is on and floods may be its not up to the job??
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Old 29-07-2013, 10:58 PM   #4
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If its flooding at 5 psi you have a float needle issue !!
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Old 30-07-2013, 09:04 AM   #5
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Or its not 5psi, I dont like dead head regulators as the pressure will equalize on the low pressure side if not being used fast enough.

What colour holley pump are you using? Ive never used a regulator with a holley red pump, they should be self regulating at 5 psi.
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Old 30-07-2013, 06:44 PM   #6
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Hi it's a red top holly may be its a carb issue rather than regulator issue and it just bad timing on are part!! Do you recommend not using a regulatior at all??? Will it be ok at low speed? Any advice welcom!!! Thanks!!
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Old 30-07-2013, 07:02 PM   #7
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Quote:
Originally Posted by rob lister View Post
Hi it's a red top holly may be its a carb issue rather than regulator issue and it just bad timing on are part!! Do you recommend not using a regulatior at all??? Will it be ok at low speed? Any advice welcom!!! Thanks!!
If its is the right spec pump, no regulator is required. I believe Xr2s were supplied with an electric marine holly red but I believe the specs are different to a standard red.

http://www.holley.com/12-801-1.asp

http://www.holley.com/712-801-1.asp

Can't recall the specified psi but I'm sure it's on here somewhere if you search. Holley do lots of pumps though so worth checking you have the right spec. Was it bought new?

Plus, what bob said...
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Old 30-07-2013, 08:21 PM   #8
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I just got one of these http://www.glencoeltd.co.uk/facet-48...uel-pump-1288/ and had them put in a 4/5psi spring. No regulator needed
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