Notices
Series I Major Horsepower Upgrades This is the place to discuss Super Chargers and Turbos, Nitrous, Porting, etc

Fuel Pump Solution - All Failure Modes

Old Aug 4, 2009 | 04:12 PM
  #126  
MazdaManiac's Avatar
Thread Starter
Banned
iTrader: (3)
 
Joined: Oct 2003
Posts: 16,386
Likes: 28
From: Under my car
Originally Posted by dannobre
The Denso replacement that fits without the OEM filter in the basket is the 195130-1020 Supra TT pump.
No. The pump I reference in this thread is the OE pump for the Evo. It is drop-in and will fit the sock and such.
Not much of an upgrade, though. It tops out below 200 l/hr.
Reply
Old Aug 4, 2009 | 05:45 PM
  #127  
dannobre's Avatar
Modulated Moderator
iTrader: (3)
 
Joined: Feb 2004
Posts: 13,720
Likes: 344
From: Smallville
^^ That would be kinda useless Not enough of a flow upgrade...

The Supra pump is a good upgrade for those that don't want to go with the Walbro 255 for whatever reason. ( Like I hate Walbro pumps )
Reply
Old Aug 4, 2009 | 11:52 PM
  #128  
madcows's Avatar
Registered User
 
Joined: Apr 2009
Posts: 239
Likes: 0
From: michigan
Maybe not much of an upgrade asides from reliability I suppose. But shouldn't it be plenty for a n/a motor?
Reply
Old Aug 5, 2009 | 08:56 AM
  #129  
olddragger's Avatar
Registered
iTrader: (3)
 
Joined: Apr 2004
Posts: 10,828
Likes: 40
From: macon, georgia
i have always been curious about the kenne bell boost a pump set up. I know it is probably impractical for most but for boosted guys it may be interesting? Anyone have any experience with this?. Dont mean to thread jack here, just a short answer?
olddragger
Reply
Old Aug 5, 2009 | 10:35 AM
  #130  
chickenwafer's Avatar
Nope
iTrader: (9)
 
Joined: Jan 2007
Posts: 3,312
Likes: 0
From: Denver
That actually looks kinda cool, OD. Says it bumps voltage to 17v and up to 20v! I think it would fry the stock pump.....the fuel pump resistor pack wouldn't effect it because the booster only comes on in boost, so the resistor is already bypassed by then.

I think it would work better with the aforementioned secret squirrel Walbro pump mentioned here. I'm looking for all the fuel flow I can get since I want to go E85
Reply
Old Aug 5, 2009 | 10:57 AM
  #131  
dannobre's Avatar
Modulated Moderator
iTrader: (3)
 
Joined: Feb 2004
Posts: 13,720
Likes: 344
From: Smallville
The Walbro's are well known to not like the voltage boost from the voltage booster type pump mods.

The Densos seem to be more tolerant of the overboost voltage

What all this boils down to is that there is more than one way to skin a goose
Reply
Old Aug 5, 2009 | 11:14 AM
  #132  
chickenwafer's Avatar
Nope
iTrader: (9)
 
Joined: Jan 2007
Posts: 3,312
Likes: 0
From: Denver
^True story.

I've been doing some reading on that Boost A Pump on various Ford forums, etc, and it's pretty split over there. One side loves it- the other claims it kills your pump(s). I dunno. It's $250 for the Boost-A-Pump and under $100 for the Walbro.....

I still want the most fuel I can get with E85 requiring it.....maybe dual Walbro pumps is in my future?
Reply
Old Aug 19, 2009 | 04:07 PM
  #133  
mrslysly's Avatar
07 Rx8
 
Joined: May 2008
Posts: 123
Likes: 0
From: Marshfield, WI
I'm anxious about a fuel pump replacement. I'm experiencing fuel cutouts after only using 2.5 gallons out of the tank on long left hand sweepers. The dealership tech said the fuel pump I have is functioning normally. He even called the mazda tech help line and that guy said the fuel cutting out is how the car is. WOW!

Right not, anything is better than the stock pump. I have another lapping day in two weekends I want to attend and don't want to have to fill up after every 20 minute run.
Reply
Old Aug 19, 2009 | 08:14 PM
  #134  
dannobre's Avatar
Modulated Moderator
iTrader: (3)
 
Joined: Feb 2004
Posts: 13,720
Likes: 344
From: Smallville
You need a new pump....it should work fine down to 1/4 tank..if it doesn't you need a new pump

The Walbro is the easiest upgrade..you take out the old pump..and direct fit the Walbro pump in its spot...that's if you like that pump
Reply
Old Aug 21, 2009 | 04:47 AM
  #135  
david8's Avatar
Registered User
 
Joined: Jun 2009
Posts: 13
Likes: 0
I will pick my car up from the shop today with the Walbro upgrade, hope it can keep up to the boost and keep my AF away from 13's.
Reply
Old Aug 21, 2009 | 02:57 PM
  #136  
olddragger's Avatar
Registered
iTrader: (3)
 
Joined: Apr 2004
Posts: 10,828
Likes: 40
From: macon, georgia
no thread jack--but folks watch your fuel fittings while doing all this swapping.
od
Reply
Old Aug 21, 2009 | 03:32 PM
  #137  
mrslysly's Avatar
07 Rx8
 
Joined: May 2008
Posts: 123
Likes: 0
From: Marshfield, WI
I think someone not affiliated with BHR needs to post walbro part number. If I could buy it thru BHR right now, they would have my money. But since they aren't offering up anything until they are satisfied with testing and I'm sick of having fuel cutouts, I need something installed within two weeks.

Help?? Please!
Reply
Old Aug 21, 2009 | 03:41 PM
  #138  
Jedi54's Avatar
Administrator
iTrader: (7)
 
Joined: Mar 2004
Posts: 22,602
Likes: 3,471
From: The Dark Side
even if we had a part # (which I honestly don't have), Im pretty sure the pump needs to be modified in order to work, doesn't it?

your car should be under warranty, have you tried getting Mazda to replace yours for the time being?
Reply
Old Aug 21, 2009 | 04:54 PM
  #139  
chickenwafer's Avatar
Nope
iTrader: (9)
 
Joined: Jan 2007
Posts: 3,312
Likes: 0
From: Denver
The pump doesn't need to be modified it's a drop in replacement

I know the model # but I don't need to start a flame fest, so whatever
Reply
Old Aug 21, 2009 | 04:57 PM
  #140  
Jedi54's Avatar
Administrator
iTrader: (7)
 
Joined: Mar 2004
Posts: 22,602
Likes: 3,471
From: The Dark Side
Originally Posted by chickenwafer
The pump doesn't need to be modified it's a drop in replacement

I know the model # but I don't need to start a flame fest, so whatever
I'm no expert on this stuff but...

Originally Posted by MazdaManiac
To increase flow through the siphon, just drill the venturi orifice out to 1/8" through the fuel return outlet (you should only do this with the upgraded pump and it MUST be done with the Walbro to avoid blowing open the pop-off valve at all times, reducing flow and cavitation of the pump assembly) and reinstall.
Reply
Old Aug 21, 2009 | 04:59 PM
  #141  
chickenwafer's Avatar
Nope
iTrader: (9)
 
Joined: Jan 2007
Posts: 3,312
Likes: 0
From: Denver
That's part of the fuel pump basket, Jorge, not the pump itself.
Reply
Old Aug 21, 2009 | 05:00 PM
  #142  
Jedi54's Avatar
Administrator
iTrader: (7)
 
Joined: Mar 2004
Posts: 22,602
Likes: 3,471
From: The Dark Side
Refer to the "I'm no expert" comment.
Reply
Old Aug 21, 2009 | 05:53 PM
  #143  
mrslysly's Avatar
07 Rx8
 
Joined: May 2008
Posts: 123
Likes: 0
From: Marshfield, WI
Originally Posted by chickenwafer
The pump doesn't need to be modified it's a drop in replacement

I know the model # but I don't need to start a flame fest, so whatever
PM me the part number.

Jedi54, I did goto the dealer for warranty. Mazda dealer tech AND the Mazda tech help line both said its function normally and the pump is suppose to be like that.

To quote what the Mazda tech help line said "the pump is functioning as it was intended and that is just how the Rx8 is." Isn't that wonderful??!!
Reply
Old Aug 21, 2009 | 07:41 PM
  #144  
dannobre's Avatar
Modulated Moderator
iTrader: (3)
 
Joined: Feb 2004
Posts: 13,720
Likes: 344
From: Smallville
Originally Posted by mrslysly
PM me the part number.

Jedi54, I did goto the dealer for warranty. Mazda dealer tech AND the Mazda tech help line both said its function normally and the pump is suppose to be like that.

To quote what the Mazda tech help line said "the pump is functioning as it was intended and that is just how the Rx8 is." Isn't that wonderful??!!

Typical....Did they even check the FP? Likely not....they figure the pump works OK if the car starts
Reply
Old Aug 21, 2009 | 07:48 PM
  #145  
dannobre's Avatar
Modulated Moderator
iTrader: (3)
 
Joined: Feb 2004
Posts: 13,720
Likes: 344
From: Smallville
Which issue is the large one
Reply
Old Aug 21, 2009 | 08:06 PM
  #146  
mrslysly's Avatar
07 Rx8
 
Joined: May 2008
Posts: 123
Likes: 0
From: Marshfield, WI
I am running NA. I am getting fuel cutouts on hard left hand sweepers at 2.7 gallons short of a full tank. Unless someone else has a better solution, I think that I need a new fuel pump.

I understand that with the split saddle fuel tank I will always have fuel issues, but that should only be at lower fuel levels. Not damn near a full tank! How is this pump not a solution for a NA car, especially my situation?

I don't know what the tech did to check the fuel pump.

Last edited by mrslysly; Aug 21, 2009 at 08:11 PM.
Reply
Old Aug 21, 2009 | 08:32 PM
  #147  
dannobre's Avatar
Modulated Moderator
iTrader: (3)
 
Joined: Feb 2004
Posts: 13,720
Likes: 344
From: Smallville
Originally Posted by mrslysly
I am running NA. I am getting fuel cutouts on hard left hand sweepers at 2.7 gallons short of a full tank. Unless someone else has a better solution, I think that I need a new fuel pump.

I understand that with the split saddle fuel tank I will always have fuel issues, but that should only be at lower fuel levels. Not damn near a full tank! How is this pump not a solution for a NA car, especially my situation?

I don't know what the tech did to check the fuel pump.
You can't do worse than a fully function stock pump..that is good down to say 1/4 tank....Below that there are other issues at play..but NA you should be golden

When I swapped to a Denso 265litre pump..the problem mostly went away NA....but came back Turbo'd, So far 2 pumps seems to do the trick Turbo'd
Reply
Old Aug 21, 2009 | 08:42 PM
  #148  
mrslysly's Avatar
07 Rx8
 
Joined: May 2008
Posts: 123
Likes: 0
From: Marshfield, WI
Once I get a pump I will report if it made any difference in my power lose issues.
Reply
Old Aug 22, 2009 | 07:59 AM
  #149  
Benjamz's Avatar
Tony says, RX8s are GREAT
 
Joined: Nov 2007
Posts: 507
Likes: 2
From: Bay Area.
Originally Posted by mrslysly
I am running NA. I am getting fuel cutouts on hard left hand sweepers at 2.7 gallons short of a full tank. Unless someone else has a better solution, I think that I need a new fuel pump.

I understand that with the split saddle fuel tank I will always have fuel issues, but that should only be at lower fuel levels. Not damn near a full tank! How is this pump not a solution for a NA car, especially my situation?

I don't know what the tech did to check the fuel pump.
Here is SaRD's fix for saddle type fuel tanks, the "Jet Pump Killer"

http://sardracing.com/jetpumpkiller.aspx
Reply
Old Aug 22, 2009 | 12:32 PM
  #150  
olddragger's Avatar
Registered
iTrader: (3)
 
Joined: Apr 2004
Posts: 10,828
Likes: 40
From: macon, georgia
dont exclude the 09 pump assembly. I understand the need for a stronger pump but they are other things that are important as well.The 09 assembly address's things like air bubbles/cavitation, the siphon( no matter what type increased flow fp you get you also need to get the 09 siphon tube--its bigger). replaceable fuel filter, its a denso pump and quality is much better etc.
An increased flow pump will be dang good and i hope what works for the pre 09 model will also work for the 09.
OD
Reply

Thread Tools
Rate This Thread
Rate This Thread:
You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -5. The time now is 12:15 PM.