Well a month ago when all these bad Walbro threads started surfacing; and having experienced a premature failure myself I did alot of searching on the boards and other internet resources.
There was mention of the Supra pump being a possiblity in a few threads.
So I decided to order the Toyota Supra Twin Turbo Fuel Pump rated at 280 LPH. I even had seen some figures putting it at 300 LPh at 14.5 volts.
I looked up the application using the Denso website and came up with the part number : 950-0155 their site then has a link to order the item and it refers you to a authorized Denso distributor which in this case was Sparkplugs.com!
The pump arrived today and I couldnt wait to put it in since I had my share of practice with these TR pump changes over the years that I could now do it in the dark.
I'm not going to mention a step by step, just what is different and what I did to install the pump.
I used two stainless worm gear clamps to secure the pump to the hanger.
I installed the sock first, how you position the pump sock is very important you have to angle it on the same side as the level float (as close as you can with out interfering with the operation of the float lever.) (See pic)
Then put on the little feed hose from pump to hanger, the little hose in the kit seemed like it was good quality so I used that one. It didnt need any cutting. It was a bit of a PIA to get this little hose on.
I then clamped each end of the line.
Next I clipped off the little "jumper wire" that the TR pump used and installed two spade connector ends. I played it safe and crimped and soldered the connection. You can cut the harness directly an d not use the jumper but I wanted to have the option of easliy going back to the TR pump if my mission failed.
The two little nuts needed for the POS & NEG (which are two different sizes) does NOT come with the kit. You need to reuse the ones that came with your Supra Turbo.
Since I didnt have a Supra turbo, I had to go digging in my tackle box of hardware I accumulated over the ages. If you do not have a little tackle box of joy, with alot of little metric and machine thread stuff in there; save yourself the heartache and take the pump to the hardware store and start matching it up.
Now for the install-- the little fuel sock has to be gently bent (its bendable) to fit the pump assm into the tank while angling the float in there (see pic).
Then you have to put a little notch at the twelve O clock position of the tank lip. (opposite the tank filler neck)This is because that little nub of the float lever that sticks out gets caught because the pump body is MUCH larger than the stock sized pump.
Trust me on this, I tried to install this without doing it and NO GO.
So I used a small vice grip and bent the metal until there was sufficent clearance. Dont go animal here or you will cause sealing problems for the giant O ring. When I got the pump in I straighted this metal out as best as I could. Do NOT use a grinder or any spark producing implement be very carefulnot to produce any sparks while working in this pump access opening.
When you get it in, install is the same as any TR tank install.
Now I filled up my tank -DO NOT be tempted to run the pump dry it will damage it; (says in the instructions too) and keyed on a few times pressure on my hood gauge came up to 40 psi. Started the car and looked for leaks so far so good.
Went inside took a shower and got ready for my test drive.
Came back out 32 Psi was still showing on the gauge--good no leaks.
Drove slow here and there. So far so good.
Drove to the testing grounds...
Long stretch got boost to 20 psi fuel gauge showed 65 PSI (I have my reg set to 45 line off)
My previous Walbro pump with all the same settings showed 60-62 PSI at 20 lbs of boost.
With my old set up I saw .2 KR when I really got on it....No evidnece of that anymore with this pump.
I do notice the fuel pump gauge sweeps alot faster than before. I dont knotice a "seat of the pants' increase --which I didnt expect but the operation seemed much smoother and moved the power band sooner.
I may have to lean it out a bit up top not sure still have trials but during cruising and idle the Block learn hovers at 128! I saw as low as 124 and high as 130. so no issues there. I have an unfortunate small exhaust leak at the crossover/header connection that I cant seem to seal so That is my next project but it doesnt seem to affect drivablity. (too much at least)
I'm happy.
I put about 40 miles on this thing so far.... Will keep you posted.
There was mention of the Supra pump being a possiblity in a few threads.
So I decided to order the Toyota Supra Twin Turbo Fuel Pump rated at 280 LPH. I even had seen some figures putting it at 300 LPh at 14.5 volts.
I looked up the application using the Denso website and came up with the part number : 950-0155 their site then has a link to order the item and it refers you to a authorized Denso distributor which in this case was Sparkplugs.com!
The pump arrived today and I couldnt wait to put it in since I had my share of practice with these TR pump changes over the years that I could now do it in the dark.
I'm not going to mention a step by step, just what is different and what I did to install the pump.
I used two stainless worm gear clamps to secure the pump to the hanger.
I installed the sock first, how you position the pump sock is very important you have to angle it on the same side as the level float (as close as you can with out interfering with the operation of the float lever.) (See pic)
Then put on the little feed hose from pump to hanger, the little hose in the kit seemed like it was good quality so I used that one. It didnt need any cutting. It was a bit of a PIA to get this little hose on.
I then clamped each end of the line.
Next I clipped off the little "jumper wire" that the TR pump used and installed two spade connector ends. I played it safe and crimped and soldered the connection. You can cut the harness directly an d not use the jumper but I wanted to have the option of easliy going back to the TR pump if my mission failed.
The two little nuts needed for the POS & NEG (which are two different sizes) does NOT come with the kit. You need to reuse the ones that came with your Supra Turbo.
Since I didnt have a Supra turbo, I had to go digging in my tackle box of hardware I accumulated over the ages. If you do not have a little tackle box of joy, with alot of little metric and machine thread stuff in there; save yourself the heartache and take the pump to the hardware store and start matching it up.
Now for the install-- the little fuel sock has to be gently bent (its bendable) to fit the pump assm into the tank while angling the float in there (see pic).
Then you have to put a little notch at the twelve O clock position of the tank lip. (opposite the tank filler neck)This is because that little nub of the float lever that sticks out gets caught because the pump body is MUCH larger than the stock sized pump.
Trust me on this, I tried to install this without doing it and NO GO.
So I used a small vice grip and bent the metal until there was sufficent clearance. Dont go animal here or you will cause sealing problems for the giant O ring. When I got the pump in I straighted this metal out as best as I could. Do NOT use a grinder or any spark producing implement be very carefulnot to produce any sparks while working in this pump access opening.
When you get it in, install is the same as any TR tank install.
Now I filled up my tank -DO NOT be tempted to run the pump dry it will damage it; (says in the instructions too) and keyed on a few times pressure on my hood gauge came up to 40 psi. Started the car and looked for leaks so far so good.
Went inside took a shower and got ready for my test drive.
Came back out 32 Psi was still showing on the gauge--good no leaks.
Drove slow here and there. So far so good.
Drove to the testing grounds...
Long stretch got boost to 20 psi fuel gauge showed 65 PSI (I have my reg set to 45 line off)
My previous Walbro pump with all the same settings showed 60-62 PSI at 20 lbs of boost.
With my old set up I saw .2 KR when I really got on it....No evidnece of that anymore with this pump.
I do notice the fuel pump gauge sweeps alot faster than before. I dont knotice a "seat of the pants' increase --which I didnt expect but the operation seemed much smoother and moved the power band sooner.
I may have to lean it out a bit up top not sure still have trials but during cruising and idle the Block learn hovers at 128! I saw as low as 124 and high as 130. so no issues there. I have an unfortunate small exhaust leak at the crossover/header connection that I cant seem to seal so That is my next project but it doesnt seem to affect drivablity. (too much at least)
I'm happy.
I put about 40 miles on this thing so far.... Will keep you posted.
