As per my sig, I've had a set of PODs sitting around for awhile. Bought 'em before I understood all the periphial requirements. Well, I've got the exhaust handled, 16cm housing, BHAF on and a stage IV installed. So the last thing is the fuel pump. I've been thinking about it and I see really three options:

1. Go with the tried and true piston pump with the 15 psi innards.
II. Do a regulated electric setup like Wanna's.
C. But what if I got a second gen piston pump and regulated it after the filter like the electric setup? Would this get me better volume than the 15 psi piston pump without the tear-up of the electric system? Combined with the big in-tank pick-up that was written up by BC847 would the second gen pump perform like the electric?

What do you guys think?

 

I vote for the 1/2" fuel hose and in tank pickup, along with the low pressure piston lift pump. Should provide plenty of volume. This is how my 91.5 is setup.

 

I like both II and C myself. The thing I really like about the way my truck is set up is that I have 2 separate fuel systems. If anything goes wrong with one I still have the other.

I think a 2nd gen pump regulated post filter would do a good job, but the cost would be about the same as the Walbro setup.

If POD's is really the end of the line for you, option 1 will be fine. I was never able to pull the piston lift pump below 8 psi with the POD's, and that was with a stock pick-up.

 

Sure. End of the line. I don't know how it is where you are, but the hill is mighty greasy over here.

I don't know if PODs will be the last step, they may be too dirty for me.

Is 8 psi enough to maintain the dynamic timing? Maybe I should just go ahead and pull the pump for a re-seal and 366 spring(already got the kit) and fix the front seal to prevent blowout with the higher pressure pump. What's involved with that fix? And other than the front seal issue is there any downside to running a higher pressure at the inlet of the VE?

 

With POD's, 8 psi is sufficient.

Loctite Red is supposed to keep the seal in pretty good.

The thing I worry about running high input pressures continuously is side thrust on the vane pump. If you're going to aim for more that 15-18 psi feed, you should boost reference it like Bill and KTA have done, so the pressure rises when you are on the boost but stays at a reasonable level at low power.

 

Thanks Dave. Now to start scrounging.