Jump to content

Photo

Higher flow fuel pump, worth it if normally aspirated?

- - - - -

  • Please log in to reply
7 replies to this topic

#1
95mx5okc

95mx5okc

    Member

  • Members
  • PipPipPip
  • 11 posts
  • Location:Oklahoma City
  • Region:NASA Central/Texas
  • Car Year:1995
  • Car Number:077

Somewhat of a noob here.

 

If I am not using forced induction, is it still worth it to run a higher flow fuel pump. Regardless if I do or not, is a high performance fuel regulator a good idea?



#2
Walter Vetter

Walter Vetter

    Veteran Member

  • Members
  • PipPipPipPipPip
  • 2,354 posts

If you are racing in SM then only an OEM or OEM equivalent fuel pump is permitted.

 

Many people believe a fuel pressure regulator is of benefit, particularly on NB cars. (Not sure what a "high performance" regulator is)


2017 - SMSE SEDiv ECR Champion
Donor - Made PayPal donation Bona fide - A bonafide Spec Miata driver

#3
MPR22

MPR22

    Veteran Member

  • Members
  • PipPipPipPipPip
  • 2,005 posts
  • Location:Houston
  • Region:Southwest
  • Car Year:1999
  • Car Number:22

In NB applications it is not worth buying the higher flow fuel pumps.  Without the ability to use the fuel ie better air flow through the engine there is no need for additional fuel.  In the NBs the pumps will burn out if used with the fuel pressure regulators as they overheat trying to push so much restricted volume.    


Shattering - For those who cant drink tequila NASA Champs Winner - NASA Champs Winner Majors Winner - Novel Approach - When a paragraph simply won't do... We have a Winnah! - Won their 1st race... Congratulations! Bona fide - A bonafide Spec Miata driver Donor - Made PayPal donation

#4
Johnny D

Johnny D

    Veteran Member

  • Moderators
  • 5,831 posts
  • Location:Fremont, CA
  • Region:San Francisco
  • Car Year:1999
  • Car Number:88

He's not running SM or at least not last year.
http://mazdaracers.c...5okc#entry63460

J~


2011 NASA Western Endurance Racing Championship E3 Champ
We have a Winnah! - Won their 1st race... Congratulations! Beta-Tester - Assisted us with beta testing the website. Donor - Made PayPal donation Bona fide - A bonafide Spec Miata driver Novel Approach - When a paragraph simply won't do... Survive the 25, NASA Thunderhill - Survive the 25, NASA Thunderhill Instigator - Made a topic or post that inspired other Make it Rain - Made Paypal donation of $100+

#5
Keith Novak

Keith Novak

    Steadily Improving Member

  • SMembers
  • PipPipPipPipPip
  • 1,128 posts
  • Location:Seattle
  • Region:Northwest/Oregon
  • Car Year:1995
  • Car Number:88

In my '95, I get better HP and Tq with lower pressure than stock so the adjustable regulator is a good thing, and the stock pump works just fine.  That's with a restrictor plate though.  I've never measured AFM without the RP.

If you're not going to dyno or measure AFM though, I'm not sure you'd find much benefit to an adjustable FPR.  Running too lean is certainly not healthy for your motor.


Donor - Made PayPal donation Bona fide - A bonafide Spec Miata driver We have a Winnah! - Won their 1st race... Congratulations!

#6
95mx5okc

95mx5okc

    Member

  • Members
  • PipPipPip
  • 11 posts
  • Location:Oklahoma City
  • Region:NASA Central/Texas
  • Car Year:1995
  • Car Number:077

He's not running SM or at least not last year.
http://mazdaracers.c...5okc#entry63460

J~

It is somewhat frustrating that this is an SM only site. Many guys with Miata's run NASA TT and PTE/D etc.



#7
Tom Hampton

Tom Hampton

    Egregious Member

  • SMembers
  • PipPipPipPipPip
  • 1,781 posts
  • Location:Mckinney, tx
  • Region:South west
  • Car Year:1992
  • Car Number:41

While is is fair to say that this site is heavily biased to SM, it is not true that it excludes other classes where Mazda cars race.  You just posted in a SM specific portion of the site.  Here is a link to the non SM forums:

 

http://mazdaracers.c...ps-and-classes/

 

Admitedly these sections are not heavily frequented. 


-tch
Build: www.tomhampton.info

video: vimeo.com/tomhampton

Support: X-Factor Racing

 

I didn't lose, I just got outspent!

Beta-Tester - Assisted us with beta testing the website. Donor - Made PayPal donation Bona fide - A bonafide Spec Miata driver

#8
Johnny D

Johnny D

    Veteran Member

  • Moderators
  • 5,831 posts
  • Location:Fremont, CA
  • Region:San Francisco
  • Car Year:1999
  • Car Number:88

It is somewhat frustrating that this is an SM only site. Many guys with Miata's run NASA TT and PTE/D etc.

 

I'm not trying to make it frustrating.

Tom is also correct.

But more will reply from a SM point of view and I was pointing out you were not in SM to be clear.

Also the FPR is an improvement when tuned. (on a dyno) Not saying you're not.

Otherwise you could be running lean and blow up or rich which defeats the point of getting it.

J~


2011 NASA Western Endurance Racing Championship E3 Champ
We have a Winnah! - Won their 1st race... Congratulations! Beta-Tester - Assisted us with beta testing the website. Donor - Made PayPal donation Bona fide - A bonafide Spec Miata driver Novel Approach - When a paragraph simply won't do... Survive the 25, NASA Thunderhill - Survive the 25, NASA Thunderhill Instigator - Made a topic or post that inspired other Make it Rain - Made Paypal donation of $100+




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users