20-02-2012, 12:03 PM
Ruan Wrote:You run a T2 - revving past 4500rpm is farily pointless anyway, at least, your pump is going to deliver MORE than enough fuel in it's stock way to fuel a T2 to long past melting it...
Put it this way, my car doesn't need a lift pump, yes I'm running far less RPMs, but you shouldn't need one... Putting pressure into a VE pump COMPLETELY cocks them, it should be a last resort IMO. So unless you're swirl potting it, don't bother. And as Darren says, HDi lift pumps are useless past 200hp, if not before then TBH, the amount of fuel the VE bypasses is WAY more than a HDi, and the HDis have seen issues past 200hp, sort of 220hp, they're needing bigger pumps.
IMO before even touching lift pumps, you need to see what's actually going on, whether you're actually starving of fuel, by having an Internal Pump Pressure gauge... Only then will you know what's going on.
Spot on mate! Good info, Cheers. I wasnt planning on increasing the pump pressure, just maintaining the same pressure throughout the rev range, but I see you point, without a gauge it will be near impossible to regulate.
An idea on the bench for now then!!!!
Edit: @Dave. Bigger pipes all the way to the tank? Will the ve cope with this or would it just start sucking the pipes thin?