In tank fuel pump retrofit. The worrying bit!

[Racingroj]

Once again thanks for all the great info. I should have said that along with the fuel cavitation problems I also want to lose the noise from the pumps which is driving me nuts. I thought that to fit in tank punmps you would have to cut new holes hence the need to remove the tanks. How can I put a new system in without removing the tanks? Just remember guys I am just starting from scratch here and learning as I go along
Some of the comments assume a degree of knowledge already.
Thanks again
Roj

[MarkWebb]

Roj you have various pms from me as long as your piston heads email address is correct that is.

[huzilulu]

What pump speed controller are you using?

[MarkWebb]

http://www.professional-products.com/secure/upload...

[Steve_D]

MarkWebb said:

http://www.professional-products.com/secure/upload...

Is there a UK dealer or did you just buy it direct?

Steve

[Storer]

Mark
How much does the $328 controller price end up by the time it is in your hands and our Government has taxed it?

Paul

[MarkWebb]

$331.31 including shipping. Have not been asked for any tax.
Bought direct Steve contact is [e-mail]
The contact form on the website does not seem to work.

[MarkWebb]

Please note before purchase that not all pumps are suitable for PWM control. Bosch 044 is. I have a 340l/hr aeromotive in tank pump here brand new that also is and is surplus to requirements. Think it is the same as Paul has fitted and will fit through fuel level sender hole if thats the way you want to go. DYOR!
I have to say that the controller looks very well made and is suitable for engine bay mounting i.e. fully potted.

[MarkWebb]

Sorry Paul, Steve et al. Import duty was £49.91

[Storer]

So about £270 all in delivered Mark.

If I have any further issues I will look into fitting one of these.

Thanks Mark


Paul

[k wright]

This was a big factor that delayed my entry to EFI, the need to retrofit a high pressure pump inside the tanks.

After Holley released the 12-920 it was a done deal. The pump is smooth and quiet and easily fitted outside the tanks.

https://www.holley.com/products/fuel_systems/fuel_...

[MarkWebb]

Piece of cake to fit in-tank pumps without removing them. See my pics at beginning of thread. sincerely hope that you don't get the problems that many others have had with external pumps.

[BogBeast]

k wright said:

This was a big factor that delayed my entry to EFI, the need to retrofit a high pressure pump inside the tanks.

After Holley released the 12-920 it was a done deal. The pump is smooth and quiet and easily fitted outside the tanks.

https://www.holley.com/products/fuel_systems/fuel_...

Is there anything particularly special about this pump as opposed to the various other external EFI pumps out there ?

[Steve_D]

That pump looks no different from an 044 or a Chinese copy for that matter.

Can't find a spec for the fuel flow at different pressures. The add is just claiming a flow at 15psi...can't say I know of any EFI systems that run at 15psi most are up at 43 psi (3 Bar) or even higher.

Steve

[F.C.]

Steve_D said:

That pump looks no different from an 044 or a Chinese copy for that matter.

Can't find a spec for the fuel flow at different pressures. The add is just claiming a flow at 15psi...can't say I know of any EFI systems that run at 15psi most are up at 43 psi (3 Bar) or even higher.

Steve

Agreed, 15 psi sees low mine runs up at 3 bar.
Perhaps we are all missing a trick here, running at low(er) pressure could decrease heat issues.

[Storer]

But the LS7 needs 58 to 60psi of fuel pressure.

I am now thinking that a pump controller would be a good move.


Paul

[F.C.]

Storer said:

But the LS7 needs 58 to 60psi of fuel pressure.

I am now thinking that a pump controller would be a good move.


Paul

Only on a standard ECU though.

[GTRS]

I haven't ordered my fuel system (apart from the tanks) from the factory yet. So is this a better set up at a comparable cost to the factory offering? If so, it would be very useful to have an itemised list of parts.

[MarkWebb]

Depends on how you want to do it. For instance I am going to run 2 hp pumps. 1 in each tank I am using 2 peveekoil metal bodied solenoid valves to change over flow and return. One speed control system with a DPDT relay to swap, valves, gauges and pumps from one tank to another. I can price it for you but you may choose a different spec. Happy to talk about my choice and why I made it.
I would like to stress that I am not knocking the factory system in any way I have just chosen to do things differently following my experiences.

[GTRS]

Ideally I would like to have internal pumps and minimise the number of components required in the engine bay in order to reduce both the potential heat effect and noise. But I also need to keep an eye on my budget! So for me it would be very useful to get an idea of price for the alternative to what the factory offer. Then I can weigh up the pros and cons.