Go Back   VetteMOD.com > VetteMOD Technical Discussion > Engine

Reply
 
Thread Tools
  #1  
Old 09-27-2014, 08:08 PM
496BBC's Avatar
496BBC 496BBC is offline
United States | Addict
 
Join Date: May 2008
Location: Deep in the marsh, South Louisiana
Posts: 215
My Photos: (61)
Default Issues with Holley Big Port Regulators

Anyone else having issues with Holley regulators?

I've had two doing the same thing,

they chatter and will not maintain pressure, they chatter so bad it will shake the needle off the gauge.

I replaced the Holley with an Areomotive 13201 and it is solid as a rock.

I was using the Holley big port regulators,

Neal
Reply With Quote
  #2  
Old 09-27-2014, 10:09 PM
Stroker-427 Stroker-427 is offline
Italy | Addict
 
Join Date: Mar 2008
Location: Pistoia - ITALY
Posts: 317
My Photos: (39)
Default

Same thing !!!
Bad regulators..... tens of broken pumps..... many problems....

But everything went fine when I bought Aeromotive 13201 regulator an Aeromotive A1000 fuel pump.

Very good stuff, to me !!!!!
Reply With Quote
  #3  
Old 09-27-2014, 10:51 PM
496BBC's Avatar
496BBC 496BBC is offline
United States | Addict
 
Join Date: May 2008
Location: Deep in the marsh, South Louisiana
Posts: 215
My Photos: (61)
Default

Yep, going to start switching over to all Aeromotive stuff shortly,

running the Holley Black pump right now and have had good luck so far,

Looking to go all Aeromotive SS Series stuff,

Neal
Reply With Quote
  #4  
Old 09-27-2014, 10:53 PM
496BBC's Avatar
496BBC 496BBC is offline
United States | Addict
 
Join Date: May 2008
Location: Deep in the marsh, South Louisiana
Posts: 215
My Photos: (61)
Default

Quote:
Originally Posted by Stroker-427 View Post
Same thing !!!
Bad regulators..... tens of broken pumps..... many problems....

But everything went fine when I bought Aeromotive 13201 regulator an Aeromotive A1000 fuel pump.

Very good stuff, to me !!!!!
Stroker how is the 13201 working with the A1000 pump?

their web site suggest a different regulator for the A1000 but since I already have the 13201 it would be great if it would work.

Neal
Reply With Quote
  #5  
Old 09-28-2014, 05:17 PM
Stroker-427 Stroker-427 is offline
Italy | Addict
 
Join Date: Mar 2008
Location: Pistoia - ITALY
Posts: 317
My Photos: (39)
Default

To be honest I can't remember the part number..... but is an Aeromotive bypass regulator..... which is very important if you have a very big pump like the A1000.

I have a huge collection of broken fuel pumps..... and erratic regulators.

Aeromotive was the cure !!!!
Reply With Quote
  #6  
Old 09-29-2014, 01:23 AM
496BBC's Avatar
496BBC 496BBC is offline
United States | Addict
 
Join Date: May 2008
Location: Deep in the marsh, South Louisiana
Posts: 215
My Photos: (61)
Default

thanks for the reply,

well my issues are not resolved, started having issues with the Aeromotive regulator today, pressure just falls off to 2 psi while accelerating and once I let off to level out the pressure returns.

I'm going to install a gauge in the supply line just before the regulator and see if the pump is the problem.

it never stops with this hobby,

Neal
Reply With Quote
  #7  
Old 09-29-2014, 06:31 AM
Stroker-427 Stroker-427 is offline
Italy | Addict
 
Join Date: Mar 2008
Location: Pistoia - ITALY
Posts: 317
My Photos: (39)
Default

Have you connected the vacuum tube from the manifold to the eventual connecton in the regulator?

If yes, this can be the problem.

If not the problem should be the pump.

Can you post a pic of the istallation ??
Reply With Quote
  #8  
Old 10-01-2014, 01:55 AM
496BBC's Avatar
496BBC 496BBC is offline
United States | Addict
 
Join Date: May 2008
Location: Deep in the marsh, South Louisiana
Posts: 215
My Photos: (61)
Default

Quote:
Originally Posted by Stroker-427 View Post
Have you connected the vacuum tube from the manifold to the eventual connecton in the regulator?

If yes, this can be the problem.

If not the problem should be the pump.

Can you post a pic of the istallation ??
I don't have any pics right now,

The pump is mounted in the rear of the car near the tank pulling suction from the OE unit and discharging into the OE fuel line to the engine compartment where the regulator is mounted to the passenger fender near the overflow tank. From the regulator to the carb fuel log is a 8AN line with a 10 micron filter. The second outlet of the regulator is connected to the return line with a .060" bleed jet.

I sent this description to Aeromotive and they suggested that the pump may be cavetating due to the suction line.

Neal
Reply With Quote
  #9  
Old 10-01-2014, 08:32 PM
Stroker-427 Stroker-427 is offline
Italy | Addict
 
Join Date: Mar 2008
Location: Pistoia - ITALY
Posts: 317
My Photos: (39)
Default

Yes, it can be a cavitation issue....

...or some air sucking in the line from the pump to the tank !
Reply With Quote
  #10  
Old 10-05-2014, 04:33 PM
496BBC's Avatar
496BBC 496BBC is offline
United States | Addict
 
Join Date: May 2008
Location: Deep in the marsh, South Louisiana
Posts: 215
My Photos: (61)
Default

Tried removing the bleed jet and playing with the adjustment of the Aero regulator today.

The regulator does not react to the adjustments right away its like the regulator is sticking.

I took a ride after working the regulator back and forth and things are a little better. The fuel pressure is a lot more stable now at 6 psi and is holding there even when driving.

Now I think I need to look at the pump, when I get in it for a few seconds the pressure drops to around 1 psi, when I get out of it the pressure comes back.

I'm going to install the Holley regulator and see if it has the same symptoms, if so I know I need to look at the pump.

I've made quite a few runs at WOT in the past but have not watched the fuel pressure. I do have a wide band with data logging and have never seen the AFR go lean at WOT so don't think it was a issue in the past but it is now. The pump may be going out and its time to change it.

Neal
Reply With Quote
Reply


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 04:18 AM.
 


Design by: vBulletin Skins Zone
Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.