[BillyM]

Well, since I'm pretty well decided upon using the rising rate fuel pressure regulator, I was wondering what the stock fuel pump does at about 90psi... I was looking at a bosch unit that will still flow way more fuel than I need, even pushing 90psi on the rail. It is not nearly affected by preasure as the walbro units are.

Well, I was just wondering if my stock fuel pump would be pissed about a 6:1 rrfpr and me running 7psi... Phil D, I think you had some prior knowledge of the stock pump capabilities. Any info would be greatly appreciated.

--BillyM

 

[RaptorRacing]

Hey Billy,

just wondering(not to hijack this thread but)...did you want me to post that pix of you with the bottle on your head :shock: ...or just delete it. Later dude.

 

[Daves2JZGTE]

http://www.jblmk3.com/id82.htm if you look on this link you can see a mk3 pump gose out at about 60 and we know the mk2 is a close comparison on the bad side. Dave

 

[cheappower82]

I was running my 295's at 7psi boost and a 12:1 FMU on the stock internal pump with no problems.

 

[WadeT]

i'd start to worry at about 300+ rwhp.

 

[Muchbzy]

The stock one wouldn't stand up to more than 65 or 70 or so. It would make mine go lean at high boost but once I put in the larger pump I could run less pressure and no lean conditions at all.

 

[BillyM]

Allright, thanks. I think I'll source up a bosche unit then.

As for the drunken late-night picture sharing... Sure, why the hell not, I did it, and I'll take responsibility for it, regardless of how much to drink I had...

--BillyM

 

[BillyM]

Overkill? I just shelled $140 for a mac-daddy pump.

Bosch unit, number: GFP216.

I little clip from a pump spec page...
"228 litres per hour and supports 500 bhp at 73.5 PSI # 0 580 254 984"

Equals the WalbroHP at 60psi,
4.5% better @80psi,
20% better @90psi,
52% better @100psi,
192% better at 110psi.
120psi anyone?

Better safe than sorry eh?
Heh.

--BillyM