fuel pressure

Post by **peeweethepinstriper** » Sat Sep 12, 2009 5:39 pm

How much fuel pressure should a Minor 1000 have? I recently bought a minor wiith an aftermarket fuel pump that ran a regulator also could i just replace both with one of these? I have dual SU carbs and not trying to win a beuty contest with the little car.. just be functional http://cgi.ebay.com/ebaymotors/Low-Pres ... 911.c0.m14 or one of these http://cgi.ebay.com/ebaymotors/Cube-Sol ... ccessories here is the huge pump it has now...

Post by **MarkyB** » Sat Sep 12, 2009 6:53 pm

Is the current pump in the boot or near the petrol tank.
All I can see is what looks like a pressure regulator/water trap that isn't connected to anything.
It is in the position I would expect to see an SU petrol pump.

Post by **Alec** » Sat Sep 12, 2009 7:15 pm

Hello Peeweetps,

about 1 1\2 to 2 psi. Any more is likely to cause flooding.

Alec

Post by **peeweethepinstriper** » Sat Sep 12, 2009 7:33 pm

That is the current fuel pump but being how it had an additional regulator I think it is too powerful

Post by **bmcecosse** » Sat Sep 12, 2009 8:58 pm

Low low pressure - the SU's don't like much pressure! Just test the delivery - if it manages to pump a pint in a minute - it will be fine.

Post by **peeweethepinstriper** » Sun Sep 13, 2009 1:49 am

would this pump be okay? DRY LIFT: 12 INCH,
STARTED AT 9V.
FLOW: 10GPH @ 9 V STARTED.
12v, FREE FLOW: 32 GPH
12V, FLOW: 23 GPH @ 2-3 PSI

INLET AND OUTLET THREAD SIZE: 1/8-27 NPTF

Post by **peeweethepinstriper** » Sun Sep 13, 2009 1:54 am

heres another http://cgi.ebay.com/ebaymotors/LOW-PRES ... 911.c0.m14

Post by **bmcecosse** » Sun Sep 13, 2009 10:17 am

It's enough flow and pressure - but the 'dry lift' is not enough if you place it where the SU normally sits. However - if you position it on the engine bay floor - it should be ok.

Post by **MarkyB** » Sun Sep 13, 2009 5:57 pm

The last link you sent (item 320422842385) looks like it is based on the original pump type.
I'd go with that one, mounted low as BMC suggests.

Post by **bmcecosse** » Sun Sep 13, 2009 6:03 pm

If the engine has a mechanical pump -use it!