Fuel Pump Q: How-to-change it...
 

i have searched....

Does anyone have some instructions on how to swap out my stock FP for an upgraded fuel pump(rotary performance)?

I'm sure I can figure it out, but I rather not reinvent the wheel here...

Any help would be appreciated. Thanks!

fairly easy
 

make sure you do it in a well ventilated area....
remove the rear hatch carpeting
youll find the cover plate left of the spare tire
if i recall correctly...it as simple as removing the plate screws and connectors and basically lifting the assembly out of the tank do the replacement...

make sure you take the bottom piece of the fuel pump brace off when you disassemble and reassemble. i found that mine was hanging out of its place. the pump will sit straight up and down and will not be cocked any other way when it is installed correctly.

paul

That simple, huh? I guess it'll go in this weekend.
Oh yeah, I bought it used. Is there a way to check it, and make sure it's working properly? I'd hate to pop my motor due to a bad/clogged pump.

ttt
thanks jpandes you are asking all my questions for me at the perfect time how convenient

i second that.

i got a line some fuel pumps....pretty cheap, too. the walbro 255 lph for just under $98 shipped

anyone know how to wire up two fuel pumps together?

luigi

Yea PFS give them a call.


get your workshop manual download here www.iluvmyrx7.com

Thanks guys. Did the FP swap on Friday. It took about an hour. The toughest part was getting all the fuel lines to come loose w/o breaking any of the nipples. Other than that it was straight forward. i recommend doing outside...it's pretty messy and the fumes are pretty bad.

The one thing that makes me feel uneasy about the whole deal is that I bought the pump used and it looks identical to the OEM pump, except that the part numbers on top were grinded/melted off the top of the pump. The guy I bought it from said that it was from rotary perf.

Seems to work...

fd3boost i don't know if you were directing me to this sight, but i did not find anything.

luigi

anyone know how to wire up two fuel pumps.

Its pretty easy to do. Make sure you have something to cap off the lines while they drain. The only thing I had around was duct tape, duct tape adhesive and fuel don't work out and make a mess. :( (Of course I already knew that, but was trying to do something quick)

The number is taken off from Rotary Performance, because you are buying nothing more then a Supra TT Denso drop in pump, that you could find for $200.00 at other places. :(

Why do you want two pumps???
Do you plan on having over 500 whp??? :confused:

Cool, as long as it does the job, I'm happy. Besides I only paid $130.00 for it:)

https://www.rx7club.com/forum/showth...ight=fuel+pump

Great job searching! :) the exact reason I did this write-up ;)

LOL...smart ass;)

but Van....I searched! :D

why doesn't everbody just get the walbro 255, it's only 90 bucks brand new.

Because its smaller, doesn't flow as well, doesn't support as much horsepower, and is more prone to failure.
:)
You get what you pay for! :)

exactly glassman
Instead of a new walbro I got a used supra tt fuel pump with 55k on it and I feel more confident about that than a new walbro because I know supras are reliable and I have heard those things about the walbro so it was an easy choice

Then why is it that most of the high end hp Okinawa FD's run the same pump?

What does SIZE of the pump have to do with flow and horsepower support? 255 lph in a small pump is just as good as 255 lph in a bigger pump.

I have NEVER seen a walboro pump fail on ANY car...Mustang/Camaro/FD/180SX/Silvia/GTR...NONE.

MOST of fd owners won't even get CLOSE to using the walboro at it's full potential...

Because most of you are cheap Military paid bastards!!! j/k :)
Why do more people run PFC's over Motec's or Kuhmos over Bridgestones???
Not much, but it does have things to do with heat dissipation.
Bigger is almost always better.
Not to mention it does flow more.

I've never had one fail on me (because I don't use them). But have heard of numorous failures compared to none of the Denso pumps.
I'm sure some of this is hearsay, but why take a chance on one of the most important parts of your system???

This may be true, but why not get the best (straight drop in) while you are at it? I would have gone with 1600 cc secondaries from the start (instead of 1300) if I could have done it all over again.
Because when the horsepower bug bites, you never know when it will stop (if ever), maybe until your pockects are completely empty??? Well if they are, I'm glad I spent the extra $60 on the Denso pump. :D

Good points made glass man!

I'm still waiting to see ANY walboro pumps go bad however. If I could do it again, I would have just gotten 2 walboro pumps instead of 1 ND pump....then I would have the system I wanted in the first place...2 intake Fuel Pumps!:D

the walbro flows more than either the supra or 20b pumps.

Yes it is true that the walbro pump flows more than the supra fuel pump but the fact that we have heard of a couple failing was enough to turn us away from using it even if the thing came gold plated
Can you imagine boosting to 13 psi while flooring it and having your fuel pump go out? Not good

The walbro pump sounds better in many aspects like that it is newer, flows better, and it is still cheaper than a used supra tt fuel pump but I like to take every precaution possible and it has been rumored that the walbro pumps may fail...it seems they are a much cheaper made product and the price reflects that.

How many supra tt fuel pumps have you heard of that failed? I've heard of supras with 150k on them totally stock and still running fine with good compression and good turbos. They are reliable so therefore their parts must be.

I think many people run that dual walbro setup not because they have more than 500 rwhp but just incase oneof the walbros fails they have a backup:D

Does it?
Here are the flow charts of some fuel pumps.

Denso
Toyota part number is 23221-46110
260 lph @43psi @12v
290 lph @43psi @14v

Just a few others.
Mazda RX-7 Twin Turbo
210 lph @43psi @12v

Mazda Cosmo
250 lph @43psi @12v

3000 GT VR-4, Celica GT-4
180 lph @43psi @12v

260 lph, is more then 255 lph. Is it not???