New option for fuel pump replacement - ZR-1 Net Registry Forums

VetteMed · 07-12-2012

Quote:

Originally Posted by Blue Flame Restorations

The modification to the fuel pump holsters was a simple relief cut and will not compromise the ability to hold the pumps. The holsters will outlast the pumps. No problem.

My thoughts exactly. Much ado about nothing.

tomtom72 · 07-13-2012

I did this "mod" at 17 yrs and about 33k miles. My OE pumps were just a bit tired showing on the low side of the FSM PSI spec spread. I now have 55k miles so figure about 22k miles and 5 yrs worth of use, and the only issue I have had was one of the factory plastic clamps cracked. The holders for the pumps are in great condition as I just looked at them the other day when I pulled it out to check the screw clamps I used to replace the OE plastic clamps.

I know this sounds a bit stupid, but I could actually feel the difference from my original BG pumps and the new ones when I get into the secondaries. My OEM pumps tested right at 46 PSI with the KOEO test, now the Bosch pumps still test at 55 - 54 PSI.

I should mention this as a fwiw. When I bought the Bosch pumps they were over or right around $100.00 each. I looked them up like a year ago and the price is almost 1/2 now...unless I made a mistake with the part numbers because you can't look them up by application. I just wonder why they are less now than back when I bought them?

Tom

VetteMed · 07-13-2012

Quote:

Originally Posted by tomtom72

I did this "mod" at 17 yrs and about 33k miles. My OE pumps were just a bit tired showing on the low side of the FSM PSI spec spread. I now have 55k miles so figure about 22k miles and 5 yrs worth of use, and the only issue I have had was one of the factory plastic clamps cracked. The holders for the pumps are in great condition as I just looked at them the other day when I pulled it out to check the screw clamps I used to replace the OE plastic clamps.

I know this sounds a bit stupid, but I could actually feel the difference from my original BG pumps and the new ones when I get into the secondaries. My OEM pumps tested right at 46 PSI with the KOEO test, now the Bosch pumps still test at 55 - 54 PSI.

I should mention this as a fwiw. When I bought the Bosch pumps they were over or right around $100.00 each. I looked them up like a year ago and the price is almost 1/2 now...unless I made a mistake with the part numbers because you can't look them up by application. I just wonder why they are less now than back when I bought them?

Tom

Tom, is it possible you looked up the price of a Bosch standard roller-vane type pump rather than the turbine pump? I remember paying around 90-100 each as well, about 3 years ago with my red car, and again 2 years ago with my current Z.

scottfab · 07-13-2012

[QUOTE=tomtom72;145157]I did this "mod" at 17 yrs and about 33k miles. My OE pumps were just a bit tired showing on the low side of the FSM PSI spec spread. I now have 55k miles so figure about 22k miles and 5 yrs worth of use, and the only issue I have had was one of the factory plastic clamps cracked. The holders for the pumps are in great condition as I just looked at them the other day when I pulled it out to check the screw clamps I used to replace the OE plastic clamps.
/QUOTE]

You cut a slit on the side of each pump holder? And that was at something called "17 yrs" ?
And you are now at year what?
Oh wait I see, 5yrs !!!
Ok maybe this mod has more clock time then I thought. That's different then.
I wish that would have been stated.

07-13-2012	#2
tomtom72 Join Date: Dec 2004 Location: Jacksonville, FL USA Posts: 4,609	Re: New option for fuel pump replacement I did this "mod" at 17 yrs and about 33k miles. My OE pumps were just a bit tired showing on the low side of the FSM PSI spec spread. I now have 55k miles so figure about 22k miles and 5 yrs worth of use, and the only issue I have had was one of the factory plastic clamps cracked. The holders for the pumps are in great condition as I just looked at them the other day when I pulled it out to check the screw clamps I used to replace the OE plastic clamps. I know this sounds a bit stupid, but I could actually feel the difference from my original BG pumps and the new ones when I get into the secondaries. My OEM pumps tested right at 46 PSI with the KOEO test, now the Bosch pumps still test at 55 - 54 PSI. I should mention this as a fwiw. When I bought the Bosch pumps they were over or right around $100.00 each. I looked them up like a year ago and the price is almost 1/2 now...unless I made a mistake with the part numbers because you can't look them up by application. I just wonder why they are less now than back when I bought them? Tom __________________ 1990 ZR-1, Black/grey, #2233, stock. ZR-1 Net Reg Founding Member #316 & NCM member

07-13-2012	#4
scottfab Join Date: Jan 2009 Location: Portland Oregon metro area (Washington side) Posts: 3,193	Re: New option for fuel pump replacement [QUOTE=tomtom72;145157]I did this "mod" at 17 yrs and about 33k miles. My OE pumps were just a bit tired showing on the low side of the FSM PSI spec spread. I now have 55k miles so figure about 22k miles and 5 yrs worth of use, and the only issue I have had was one of the factory plastic clamps cracked. The holders for the pumps are in great condition as I just looked at them the other day when I pulled it out to check the screw clamps I used to replace the OE plastic clamps. /QUOTE] You cut a slit on the side of each pump holder? And that was at something called "17 yrs" ? And you are now at year what? Oh wait I see, 5yrs !!! Ok maybe this mod has more clock time then I thought. That's different then. I wish that would have been stated. __________________ Scott Vett owner since 1979._It's about the car and the people Last edited by scottfab; 07-13-2012 at 08:08 AM.