2walbros, 2supra, or 2stock pumps?
#1
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2walbros, 2supra, or 2stock pumps?
Ok I'm very close to starting the fuel build up.
Anyway, can I run two stock pumps with a T-78? 850cc 1600cc etc..
Or would two walbros or supra pumps be the best option?
Anyway, can I run two stock pumps with a T-78? 850cc 1600cc etc..
Or would two walbros or supra pumps be the best option?
#3
The Walbros also flow more at 65psi than the other two will. The only thing that stops the Walbro is that Bosch Motorsports pump out of the Porsche GT1. But they're like $400 each!
#4
It would all depend on how you want your fuel system to be setup. Are you going to run parallel or series ? You could get a fuel reservoir and run a single high flow walbro to all injectors . May be two smaller walbro from the fuel reservoir which would run seperate to the primary and secondary before connecting back together with a fuel regulator .
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Despite what these guys are saying, the Supra pump is comparable to the Walbro pump, depending on how much fuel pressure you need.
Good Link for data: http://www.stealth316.com/2-fuelpumpguide.htm
Good Link for data: http://www.stealth316.com/2-fuelpumpguide.htm
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Thanks once again,
I'll probably go with two walbros, $100 is pretty good for this one.
The age of some supra pums or stock pumps could cause failure.
So, I'm going to run them parellel to each fuel rail.
I see what I can rig up in the next few weeks, thanks guys,
-Mike.
I'll probably go with two walbros, $100 is pretty good for this one.
The age of some supra pums or stock pumps could cause failure.
So, I'm going to run them parellel to each fuel rail.
I see what I can rig up in the next few weeks, thanks guys,
-Mike.
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I am running 2 walbros, "y"ed together at the pumps to a single feed line. Seems to be working pretty good. Id recommend hard wiring them to a direct 12v source, as they dont seem to like the variable voltage system the stock setup is run off of.
#12
Iam running a single supra pump with my T-88 @ 21psi with not problems , thanks to Chris at RP. The supra pumps tends to drop pressure after constant use , therfore when had to and a seperate relay dedcated to the pump itself.
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Originally Posted by rx7tt95
The Walbros also flow more at 65psi than the other two will. The only thing that stops the Walbro is that Bosch Motorsports pump out of the Porsche GT1. But they're like $400 each!
#15
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Wouldn't that Skyline GTR pump be good for this? I wanted to do the dual pump but one BIG pump seems like it would be a lot easier than messing with plumming 2 pumps together. Does the Skyline GTR pump flow as well as....say, 2 supra pumps?
#18
Originally Posted by FlameThrowingRotary
yeah but with two pumps if one fails you can still drive it home no boost instead of having it towed or replacing it on the side of the road lol.
I am currently running 2 stock pumps wired directly with relays. I have not had any real problems with them yet. I am however, considering going to one GOOD pump just because it would be my luck that one would fail during a WOT run.
#19
Eats, Sleeps, Dreams Rotary
Originally Posted by FlameThrowingRotary
yeah but with two pumps if one fails you can still drive it home no boost instead of having it towed or replacing it on the side of the road lol.
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Originally Posted by FlameThrowingRotary
is there anything that could sense a fuel press drop and cut off all flow can cause a stall as soon as one would go out?
-Alex
Last edited by TT_Rex_7; 04-24-05 at 08:13 PM.
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Originally Posted by maxcooper
One big pump is also more reliable. Two pumps aren't redundent if you need both -- it just has double the chance of failure.
-Max
-Max
A great example is how people always say to check for a leaky injector when your car floods, or there's a problem. How often do they really have a leaky injector?! It's not very common.
I would go with 2 Supra (Nippondenso) fuel pumps, or 2 stock pumps. I've heard of alot of Walbros failing, so i'd stay away to be safe!
Just some food for thought...If you keep an eye on your fuel pressure gauge, you'll know if something starts to go downhill.
-Alex
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Originally Posted by apneablue
Great...but how will you know one of them failed until you run lean and pop the motor...I'd rather do a roadside fuel pump swap than a motor swap
-Alex
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Originally Posted by TwinTurbo_SE7EN
ya, but if it fails during a WOT run...
I am currently running 2 stock pumps wired directly with relays. I have not had any real problems with them yet. I am however, considering going to one GOOD pump just because it would be my luck that one would fail during a WOT run.
I am currently running 2 stock pumps wired directly with relays. I have not had any real problems with them yet. I am however, considering going to one GOOD pump just because it would be my luck that one would fail during a WOT run.
-Alex
Last edited by TT_Rex_7; 04-24-05 at 08:52 PM.