1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Dual Fuel Filter Mod

Thread Tools
 
Search this Thread
 
Old 04-11-06 | 06:22 PM
  #26  
chedda_j's Avatar
Senior Member

 
Joined: Mar 2006
Posts: 634
Likes: 0
From: Canada
YA your theory should totally work. Im going to do it next friday, that and replace the second filter on the carb line with another red aluminum "brass" filter.
Old 04-11-06 | 06:49 PM
  #27  
peejay's Avatar
Old [Sch|F]ool
 
Joined: May 2001
Posts: 12,635
Likes: 464
From: Cleveland, Ohio, USA
Note that once you take the stock fuel pump and throw it far, far, far away, the fuel filter isn't really a problem anymore.

The fuel filter *is* a problem with the stock pump, because the stock pump is barely almost adequate, on a good day with a brand new clean filter.
Old 04-11-06 | 07:01 PM
  #28  
Kentetsu's Avatar
Thread Starter
Lives on the Forum
 
Joined: Jun 2004
Posts: 11,359
Likes: 14
From: Grand Rapids Michigan
Interesting point Peejay. I was assuming that the restriction was due to a fuel filter that couldn't handle the capacity, but maybe the true bottleneck is at the pump. I just installed my Carter today, so I guess I'll never know...

But I suppose in the mean time, this would still work for anybody stuck with the stock pump.
Old 04-11-06 | 07:57 PM
  #29  
chedda_j's Avatar
Senior Member

 
Joined: Mar 2006
Posts: 634
Likes: 0
From: Canada
YA like me, but put much is a carter?
Old 04-11-06 | 08:08 PM
  #30  
peejay's Avatar
Old [Sch|F]ool
 
Joined: May 2001
Posts: 12,635
Likes: 464
From: Cleveland, Ohio, USA
Originally Posted by Kentetsu
Interesting point Peejay. I was assuming that the restriction was due to a fuel filter that couldn't handle the capacity, but maybe the true bottleneck is at the pump.
The problem is that the pump doesn't have enough excess capacity to deal with any significant pressure drop through the filter.

Put on a decent fuel pump and it doesn't mind having to pull through a less than ideal filter, it has sufficient excess capacity.

The nicest thing about getting a better fuel pump was that I didn't have to change the fuel filter every month. The pump paid for itself in the first year

Now, if you wanted to buff some turds, you could measure the line pressure (will be a vacuum) between the filter and the pump with the pump running, and check this against various other filters.
Old 04-11-06 | 08:55 PM
  #31  
Kentetsu's Avatar
Thread Starter
Lives on the Forum
 
Joined: Jun 2004
Posts: 11,359
Likes: 14
From: Grand Rapids Michigan
Originally Posted by chedda_j
YA like me, but put much is a carter?
Huh?
Old 04-12-06 | 03:04 AM
  #32  
Hyper4mance2k's Avatar
The Shadetree Project
iTrader: (40)
 
Joined: Jul 2002
Posts: 7,301
Likes: 3
From: District of Columbia
Originally Posted by jjlrx7
looks cool enough, but what is the benifit? i use a glass filter with replacable inner screens. no more prob. I run a 465 holley. not turbo but works.
Cause glass filters are illegal for the street, and in any single racing class. You won't pass a tech inspection anywhere.
Old 04-14-06 | 10:59 PM
  #33  
OnlyOnThurs's Avatar
TACOCAT
 
Joined: Aug 2004
Posts: 3,041
Likes: 1
From: Milky Way
Just wondering how often do you guys find yourself changing your fule filters? The guys with the stock setup? Sorry for the thread hijack but this does pretain to what we are talking about here.
Old 04-14-06 | 11:01 PM
  #34  
Kentetsu's Avatar
Thread Starter
Lives on the Forum
 
Joined: Jun 2004
Posts: 11,359
Likes: 14
From: Grand Rapids Michigan
Some people say to change it yearly. I can usually see a difference in power with a new filter after a few months. You probably won't see "problems" for about a year though.
Old 04-14-06 | 11:01 PM
  #35  
OnlyOnThurs's Avatar
TACOCAT
 
Joined: Aug 2004
Posts: 3,041
Likes: 1
From: Milky Way
well i do what you do i change mine every few months (probably every 3 to 4 months)
Old 04-14-06 | 11:04 PM
  #36  
MattG's Avatar
MattG FTW!!!!!
iTrader: (2)
 
Joined: Feb 2005
Posts: 2,733
Likes: 1
From: South Windsor, CT
I change mine everytime I change the oil, but my gas tank is horrible!!

You thought that one dudes avatar was bad ill take a pic of mine coming up here in about 300 miles or so.

You would die if you saw my pintos filter
Old 04-15-06 | 03:43 AM
  #37  
darkfrost's Avatar
Rotary Enthusiast
iTrader: (1)
 
Joined: Feb 2004
Posts: 838
Likes: 1
From: Waterloo & Mississauga, Ontario, Canada
My avatar? lol

That was what the filter looked like when I first got the car, rusted gas tank, so bad that it leaked a river down my driveway the first time I filled to the top.
Old 04-15-06 | 10:38 AM
  #38  
MattG's Avatar
MattG FTW!!!!!
iTrader: (2)
 
Joined: Feb 2005
Posts: 2,733
Likes: 1
From: South Windsor, CT
Goo now thats rusted.

My pinto gas tank is so rusted, that I have to change it every 500 miles, and when I drop the tank every 1500, I dump out 2 cups of crap. The worst thing, I can drop my tank in 2 minutes. only thing that holds it in place is 2 bolts with a strap.
Old 04-15-06 | 10:52 AM
  #39  
kgray's Avatar
GOT WANKEL?
 
Joined: Jan 2005
Posts: 1,324
Likes: 1
From: Kansas City, MO
haha ready for action
Old 04-15-06 | 02:44 PM
  #40  
rxtory's Avatar
Roll to Heaven in a RX-7

 
Joined: Feb 2005
Posts: 790
Likes: 0
From: New Westminster, B.C - Canada
Originally Posted by chedda_j
Holly ****. Thats tight. You can totally see my filter in this picture, you think that my dirty filter (chassie one) could be robbing that much power? It looks black, and the car is kinda slow. Hasnt been changed for years. i did a coversion chart and it said that i should be running about 18 seconds in the quarter with my setup, im running prolly 22. Thats sad. Gotta work on that ****.


okay im using this pic as a refrence. Where the red fuel filter is, my line is just straight lined there is no filter there. Was that the previous owners doing? or did that line just go straight to the carb, the line beside it had the stock fuel filter and i dont know weather i should put a filter on the straight line
Old 04-15-06 | 09:01 PM
  #41  
Kentetsu's Avatar
Thread Starter
Lives on the Forum
 
Joined: Jun 2004
Posts: 11,359
Likes: 14
From: Grand Rapids Michigan
The stock fuel filter should be located under the rear of the car, just forward of the gas tank.
Old 04-15-06 | 09:20 PM
  #42  
85-GSL's Avatar
Full Member

 
Joined: Feb 2006
Posts: 195
Likes: 0
From: Chicago Suburbs, 815
anybody know about 13b's is there just the one rear filter? i bought a new fuel filter a few days ago but ive been majorly dragging my feet because my car is grounded because the starter is in the mail, im hoping for tuesday.

this makes me think, im going to unhook both ends of my fuel line and put a nice blast of air to make sure its clean.

hmm where can you find aftermart better fuel pumps?
Old 04-15-06 | 11:57 PM
  #43  
aussiesmg's Avatar
Thunder from downunder
iTrader: (1)
 
Joined: Mar 2001
Posts: 3,843
Likes: 1
From: Convoy, Ohio, USA
Originally Posted by rxtory
okay im using this pic as a refrence. Where the red fuel filter is, my line is just straight lined there is no filter there. Was that the previous owners doing? or did that line just go straight to the carb, the line beside it had the stock fuel filter and i dont know weather i should put a filter on the straight line
That filter in the picture has been added, it was not a stock installation.

Any thoughts on this filter?

http://cgi.ebay.com/ebaymotors/Spect...spagenameZWDVW
Old 04-16-06 | 01:46 AM
  #44  
GyroJon's Avatar
Total Noob
 
Joined: Mar 2005
Posts: 72
Likes: 0
From: Sacto, Ca
Originally Posted by chedda_j
YA like me, but put much is a carter?
LOL, think you meant how much is a carter....good question. Can anyone answer and have a model #?
Old 04-16-06 | 06:18 AM
  #45  
Kentetsu's Avatar
Thread Starter
Lives on the Forum
 
Joined: Jun 2004
Posts: 11,359
Likes: 14
From: Grand Rapids Michigan
Originally Posted by GyroJon
LOL, think you meant how much is a carter....good question. Can anyone answer and have a model #?
Ask and you shall receive...

https://www.rx7club.com/1st-gen-archive-71/fuel-how-install-carter-fuel-pump-holley-fpr-529605/
Old 04-16-06 | 12:57 PM
  #46  
jjlrx7's Avatar
Full Member
 
Joined: Feb 2003
Posts: 164
Likes: 3
From: San Antonio, Texas
didnt know about the glass, dont race much. thanks. now i wont make
myself look so dumb in public.
Old 04-16-06 | 02:52 PM
  #47  
towb's Avatar
Junior Member

 
Joined: Sep 2005
Posts: 47
Likes: 0
From: ft. walton beach, florida
another thread hijack, but for the nasty *** tank, empty all of the gas out and pull the tank. Get some chain links stick it in the tank and beat the **** out of it. Pressure wash let dry and pour red koat inside the tank. It will seal the tank and won't have anymore trouble. Let the **** sit completely open for a few days, have heard some horror stories of people replacing tanks to soon and clogging entire lines. Cheap, easy, effective. my .02cents
Old 04-16-06 | 04:30 PM
  #48  
Hyper4mance2k's Avatar
The Shadetree Project
iTrader: (40)
 
Joined: Jul 2002
Posts: 7,301
Likes: 3
From: District of Columbia
Originally Posted by aussiesmg
That filter in the picture has been added, it was not a stock installation.

Any thoughts on this filter?

http://cgi.ebay.com/ebaymotors/Spect...spagenameZWDVW
Specture isn't too bad they're a cheap rip off of the Russell stuff. They can be found in the States at Action Auto, and your local Shucks, Checker, Kargen. Don't know about auzzyland though.
Old 04-16-06 | 07:37 PM
  #49  
trochoid's Avatar
Old Fart Young at Heart
iTrader: (6)
 
Joined: Apr 2004
Posts: 15,145
Likes: 7
From: St Joe MO
Originally Posted by aussiesmg
That filter in the picture has been added, it was not a stock installation.

Any thoughts on this filter?

http://cgi.ebay.com/ebaymotors/Spect...spagenameZWDVW
It's purdy, but it will plug quickly if it is pre-pump. If you want one in the bay, hit the filter rack where they have the stock looking filters.
Old 04-23-06 | 11:58 AM
  #50  
sgieldon's Avatar
Senior Member
Tenured Member 05 Years
 
Joined: Oct 2002
Posts: 501
Likes: 0
From: Eugene, Oregon
Fuel Filter Setup

This setup might be easier!
Run a 10micron Quart Size Filter Berfore the Fuel Pump
(Mount it to the Left Rail) and then a Russel 10micron Filter before the Carb.
See Pics
I change out the Elements about every 15,000 miles in my 84GSL.
Original Cost =$42.00
Elements Cost=$9.00
sgieldon
steve
Attached Thumbnails Dual Fuel Filter Mod-pict0002resized.jpg   Dual Fuel Filter Mod-pict0005resized.jpg   Dual Fuel Filter Mod-pict0007flippedresized.jpg  


Quick Reply: Dual Fuel Filter Mod



All times are GMT -5. The time now is 12:18 PM.