Fuel Pump Adn Regulator Selection

[camerondownunder88]

Hi,

For a while now I have been re-building a set of Phh 40 mkuni/solex carbs for my KE15. Time has come to start thinking about fuel pump.

 

I want to get rid of the mechanical pump and go electric. Now here is the stumbling point. What to choose. I have been looking at Holley Red and that but really not sure what to go with.

 

Solex need exactly 2.84 to 4.98 PSI fuel pressure.

 

Now link below is to the holley red pump. Has in-built pressure adjustment and pumps 0-7PSI.

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

 

Now this is just one pump.

 

Can anyone suggest other brands etc and where I can buy one from for a good pump?

 

After the pump ill need a fuel pressure reg and fuel pressure gauge for tuning and something fancy to look at.

 

Now for easy of installation I want the gauge in the regulator and the gauge has to be small increments for preciseness. Again can any one suggest brand/type/where to buy for this part also?

 

Cheers

Cameron

[Trev]

Have not heard of rotary pumps surging like the old dak dak pumps so they are safer with fuel pressures, you should be able to set this one and leave it but a reg is entirely up to you trusting the pump, if you decide to get a reg then $80 - $100 buys you a fairly decent one although you can get them on ebay with a gauge built in for around 50 bucks, check the holley regs out, they have one that does 1-4psi.

 

I would be sticking with the rotary pump, fuel pump whirr is better then dak dak.

[philbey]

Cam this one doesn't have pressure adjustment, it just has a max pressure relief at 7psi. You'll definitely need the reg with it.

 

I use a holley Red FPR, it's been set at ~3.5 for nearly 2 years and no trouble. I had a gauge on it but took it off when I redid my fuel lines. It has NEVER given trouble, it's easy to set and it's shiny! I paid about 50 bucks for it from a rod shop.

 

My only complaint is the mounting setup is pretty shit. But you can get around that easy enough.

[Taz_Rx]

I can never recommend Carter pumps enough!!! :yes: I've got a Holley red in my mazda so I'm also familiar with holleys, but if I ever had to get another pump for it I'd swap it out for a Carter.

 

Why? Well for starter the mounting bracket is far superior to holleys simple bracket, which hence makes the pump a LOT quieter. They're also self priming which give you a lot more options in mounting locations. You also don't have to run the risk of getting a mouth full of petrol proiming the holley if you ever run out of fuel. Prices for both a pretty much the same too. You would want a Carter "green" which has the same sort of specs as the holley red - 70 odd GPH @ 7psi.

 

As for regs, as Tom said you'll deffinately need one. Get yourself a holley as he mentioned or if you want something a little bit pretty you could get a Mallory like what I have in the RX4. You can screw a guage into the second outlet of either. :wink:

[camerondownunder88]

Thanks heaps for the usefull replys :)

 

I am leaning towards a US brand item atm due to the exchange rate..LOL

 

I also want to do this correctly the first time so will now be getting a reg and pump and I wouldnt trust a inbuilt reg in a pump trev have had bad issues in the past.

 

And I definatly do want a self priming pump due to the setup of the car.

 

What do people think about SARD gear? I hear a lot of good stuff for them all EFI but have noticed they list a carby FRP. Any one got info on that item?

 

As for the reg if I can screw a pressure gauge into the second outlet that makes my choice better when it comes to gauges etc.

 

Also should I mount the pump in the boot and the reg? In a the KE1X aircon manual it shows when the pump is mounted on the K motor they installed an electric pump into the boot. Now all my fuel lines are metal rubber sections all new and high pressure. Would it be advisable to boot mount the pump and reg? As space in the engine bay of the ke15 is limited and would provide a cleaner look. But if it wont pass a RWC with it in the boot ill keep it in the engine bay.

 

Other issue is the pressure drop if reg is in the boot set at 4psi come engine bay pressure might be about 2psi so that would come into it also.

 

Cheers

Cameron

[philbey]

Pump I'd put down the back but the reg is best in the engine bay, because if you set the reg for say 4psi in the boot, you'll have pressure drop and it'll be less at the carby.

 

So you either work out your pressure drop across that distance and account for it, or you just mount it in the engine bay, as close as possible to the carby.

[Taz_Rx]

+1 Pump in boot, reg in the bay. Its not like they take up much room, you can even mount them somewhere on the inlet manifold if you want.

 

Yeah Sard is realy only EFI stuff. Personally I don't think it would suit an old skool engine bay anyway. :no2:

 

Here's one of the carters I was talking about BTW, come with a holley reg too by the looks of it....

 

http://cgi.ebay.com.au/Escort-Mazda-etc-Electric-Fuel-Pump-Carter-Gold-/260683049482?pt=AU_Car_Parts_Accessories&hash=item3cb1ebaa0a

[Trev]

Cam this one doesn't have pressure adjustment, it just has a max pressure relief at 7psi. You'll definitely need the reg with it.

 

# Regulator is not required

# Has externally accessible pressure relief valve (max 7 PSI)

 

Not known anyone to have a prob but as I said, it comes down to how much you trust the pump.

[Taz_Rx]

Not known anyone to have a prob but as I said, it comes down to how much you trust the pump.

 

That just means the pump won't put out anymore than 7psi. Whats Tom's getting at is if you're using carbs that can be quite pressure sensitive Cam's "Solex need exactly 2.84 to 4.98psi" then is neccessary to run a reg to reduce the holleys 7psi. If you were using say a down-draft weber which are much less pressure sensitive then yes, the internal relief valve would be adequate and you could get away without a reg. :yes:

[Trev]

That just means the pump won't put out anymore than 7psi. Whats Tom's getting at is if you're using carbs that can be quite pressure sensitive Cam's "Solex need exactly 2.84 to 4.98psi" then is neccessary to run a reg to reduce the holleys 7psi. If you were using say a down-draft weber which are much less pressure sensitive then yes, the internal relief valve would be adequate and you could get away without a reg. :yes:

 

Pretty sure it is this pump that you can adjust the relief valve up to a maximum of 7psi.

[Taz_Rx]

Pretty sure it is this pump that you can adjust the relief valve up to a maximum of 7psi.

 

Ah, with ya now. That was a holley you say? Pretty sure my holley red doesn't have that. :hmm:

[philbey]

ahh I just thought that the accessible relief was so you could depressurise the line before removing it.

 

HMM - just looked at the picture in this PDF. Figure 7 shows a piston valve with a screw on it. You could back the screw off but this will be really unreliable, best way to set the pressure would be either change the spring or put a washer under the screw.

[Trev]

ahh I just thought that the accessible relief was so you could depressurise the line before removing it.

 

HMM - just looked at the picture in this PDF. Figure 7 shows a piston valve with a screw on it. You could back the screw off but this will be really unreliable, best way to set the pressure would be either change the spring or put a washer under the screw.

 

Yeah that is why I said if you don't trust it then buy a reg.