Anyone using a Holley 12-125 electric pump
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Joined: Aug 2000
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From: Toledo,Ohio,USA
Anyone using a Holley 12-125 electric pump
I installed a Holley 12-125 electric pump this week end and was very happy how quite the pump was and pressure was just shy of seven lbs. Right where holley said it would be. The problem is at full throttle the pressure drops down to below four lbs with the nitrous off.
Is anyone else using this pump and if so what pressures are you getting at wot? I ran a pump test into a fuel can and in put out almost a gallon in thirty seconds, so that's close the the 125 gph it's rated at.
I talked to Holley tech and they seem to think the pressure drop is normal, I ran a Edelbrock mechanical pump last year rated at 90 gph and never had a pressure issue. Just a vapor lock problem. With pressure below four lbs this will cause problems for the nitrous mixture.
The car has a copy of the ZZ430 in it except I'm still using a Qjet, I run a return line with a .030 orfice in the line which I tryed disconnecting and it made very little difference. The pump is mounted below and slightly behind the tank outlet and is wired using a relay. Any input would be appreciated.
Is anyone else using this pump and if so what pressures are you getting at wot? I ran a pump test into a fuel can and in put out almost a gallon in thirty seconds, so that's close the the 125 gph it's rated at.
I talked to Holley tech and they seem to think the pressure drop is normal, I ran a Edelbrock mechanical pump last year rated at 90 gph and never had a pressure issue. Just a vapor lock problem. With pressure below four lbs this will cause problems for the nitrous mixture.
The car has a copy of the ZZ430 in it except I'm still using a Qjet, I run a return line with a .030 orfice in the line which I tryed disconnecting and it made very little difference. The pump is mounted below and slightly behind the tank outlet and is wired using a relay. Any input would be appreciated.
