318ti.org forum

Go Back   318ti.org forum > Technical, Maintenance and Modifications > Induction

Notices

Induction Superchargers, NO2 and turbos.

.
» Recent Threads
98 MTech Daily Driver
12-01-2018 09:00 PM
Last post by KGB318TI
12-15-2018 10:03 PM
1 Replies, 507 Views
Happy Birthday graymae
12-14-2018 06:00 AM
Last post by graymae
12-15-2018 02:34 AM
1 Replies, 292 Views
m42 misfire and smoking
11-05-2018 01:55 AM
Last post by B1p0larbear
12-13-2018 11:11 PM
7 Replies, 1,387 Views
1996 318ti Part Out
09-13-2018 08:43 PM
Last post by Sbim
12-13-2018 07:12 AM
18 Replies, 3,517 Views
95 318ti in Albuquerque
12-11-2018 07:26 AM
Last post by dynagroove
12-13-2018 05:01 AM
6 Replies, 529 Views
MOD Request - Vote for...
12-12-2018 07:06 PM
Last post by 1996 328ti
12-13-2018 04:13 AM
1 Replies, 178 Views
Belt squeaking after...
11-27-2018 11:56 PM
Last post by BRADESTAR
12-12-2018 02:47 AM
6 Replies, 766 Views
FS: '98-Manual-169k...
12-11-2018 08:04 PM
Last post by Boston Green
12-11-2018 08:04 PM
0 Replies, 219 Views
WTB 5 speed 318ti, am...
12-11-2018 05:53 PM
Last post by KASZ
12-11-2018 05:53 PM
0 Replies, 161 Views
New here so lets arc you...
11-09-2018 08:56 AM
Last post by 318tiFatherFigure
12-11-2018 10:59 AM
2 Replies, 665 Views
Reply Share/Bookmark
 
Thread Tools Display Modes
Old 09-10-2009, 09:56 PM   #1
denglish318ti
Senior Member
 
denglish318ti's Avatar
 
Join Date: Jan 2008
Location: Leeds, England
Posts: 133
iTrader: (0)
Default How far in is the screw on the RRFPR

Hi fellas

Guess you must be bored of my random DASC threads now, but I hope this is the last one asking random questions. The screw on the top of my RRFPR has moved out of position and I need to put it back to standard. Here is a pic of it as it is now, I count 3, almost 4 threads.


I was wondering if any of you guys who have a standard DASC could count how many threads show on your RRFPR? I would be very grateful.

Cheers
Dylan
__________________
Supercharged 318Ti
denglish318ti is offline   Reply With Quote
Old 09-10-2009, 11:47 PM   #2
macilona
Senior Member
 
Join Date: Aug 2008
Location: San antonio, tx
Posts: 121
Vehicles
iTrader: (0)
Default

hello Dylan---pls send me an email at macilona@comcast.net to establish a dialogue----will try to help out. mac
macilona is offline   Reply With Quote
Old 09-11-2009, 04:00 PM   #3
denglish318ti
Senior Member
 
denglish318ti's Avatar
 
Join Date: Jan 2008
Location: Leeds, England
Posts: 133
iTrader: (0)
Default

Mac wasn't able to help as he has NickG's software, lucky man! Any one else able to help me out? I think it needs to go a bit richer, I never see black smoke out the tail pipe, I am just worried I might put too much pressure on a fuel hose and it will come off!

Cheers
Dylan
__________________
Supercharged 318Ti
denglish318ti is offline   Reply With Quote
Old 09-11-2009, 06:11 PM   #4
Danny318
Senior Member
 
Join Date: Feb 2007
Location: MA
Posts: 163
iTrader: (0)
Default

get a wideband o2 sensor
Danny318 is offline   Reply With Quote
Old 09-11-2009, 09:42 PM   #5
lpcapital
Senior Member
 
lpcapital's Avatar
 
Join Date: Feb 2008
Location: Oceanside, CA
Posts: 421
iTrader: (0)
Default

I just pulled mine out last night. I'll measure it with the caliper tonight...
__________________
http://i259.photobucket.com/albums/hh284/lpcapital/ZetaTre-2.jpg

2003 Z4 2.5i
2002 Ducati Monster S4
lpcapital is offline   Reply With Quote
Old 09-11-2009, 10:06 PM   #6
denglish318ti
Senior Member
 
denglish318ti's Avatar
 
Join Date: Jan 2008
Location: Leeds, England
Posts: 133
iTrader: (0)
Default

Quote:
Originally Posted by Danny318 View Post
get a wideband o2 sensor
That would be nice, but I only paid 500 for the whole kit. To spend 130 on sorting out a wideband would be a bit over the top if I can just get it close enough by measuring.

Cheers Zeta, would be great if you could measure it with a caliper, better than counting the threads
__________________
Supercharged 318Ti
denglish318ti is offline   Reply With Quote
Old 09-15-2009, 01:16 AM   #7
lpcapital
Senior Member
 
lpcapital's Avatar
 
Join Date: Feb 2008
Location: Oceanside, CA
Posts: 421
iTrader: (0)
Default

Sorry for this... I totally forgot.

I'll do it tonight as I get home...
__________________
http://i259.photobucket.com/albums/hh284/lpcapital/ZetaTre-2.jpg

2003 Z4 2.5i
2002 Ducati Monster S4
lpcapital is offline   Reply With Quote
Old 09-16-2009, 05:51 AM   #8
lpcapital
Senior Member
 
lpcapital's Avatar
 
Join Date: Feb 2008
Location: Oceanside, CA
Posts: 421
iTrader: (0)
Default

Ok, sorry it took me so long...

From the top of the screw to the surface of the RRFPR (not the nut, the actual RRFPR) it's exactly 7mm
__________________
http://i259.photobucket.com/albums/hh284/lpcapital/ZetaTre-2.jpg

2003 Z4 2.5i
2002 Ducati Monster S4
lpcapital is offline   Reply With Quote
Old 09-21-2009, 04:49 PM   #9
denglish318ti
Senior Member
 
denglish318ti's Avatar
 
Join Date: Jan 2008
Location: Leeds, England
Posts: 133
iTrader: (0)
Default

Quote:
Originally Posted by lpcapital View Post
Ok, sorry it took me so long...

From the top of the screw to the surface of the RRFPR (not the nut, the actual RRFPR) it's exactly 7mm
Cheers Zeta, I measured mine and it was 7mm too, but I had only adjusted that using my best guess. I bought a fuel pressure gauge and checked the pressure and to get it right it took the screw down to 4mm, which is a bit weird as I cant imagine there being too much variation between the units. Cheers for the help, it gave me the balls to turn it in some more!

Anyway, for anyone who needs help setting up there RRFPR (any make) you should do the following.
1) Install RRFPR after fuel rail. Flow should be Fuel pump --> Fuel rail --> RRFPR --> return line
2) Install a cheap 10 fuel pressure gauge which goes to 100psi BETWEEN the fuel rail and RRFPR. Remember to use teflon tape on the gauge joints (guess how I know!). Should now be Fuel pump --> Fuel rail --> Fuel pressure gauge --> RRFPR --> return line
3) Start car, check for leaks! Use some blunt pliers and crimp the line between the fuel pressure gauge and RRFPR. Check pressure reaches 100psi and then release. Dont hold it at that pressure long. This checks the fuel pump can reach the needed pressure.
4) The pressures we are looking for are about
40psi idle, 18InHg vacuum
50psi 0psi
75-90 psi at 8psi boost
Screw the top screw in to get the fuel pressure to increase. You can check the pressure at 0psi by removing the small hose that goes to the top of the RRFPR. Leave the RRFPR open to atmosphere, and plug the end that goes to the manifold up.
Only way to test at 8 psi is to drive it. I taped my gauge to my windscreen wiper so I could see it inside the car. DO NOT RUN THE GAUGE INSIDE THE CAR

Car now pulls a lot better, I am still only at 80 psi fuel pressure at 8psi boost, I might crank it up a bit more to be on the safe side, but its nice to have a car that works quite well. Now where can I buy a smaller pulley and a ECU with the NickG software on
__________________
Supercharged 318Ti
denglish318ti is offline   Reply With Quote
Old 09-24-2009, 02:21 AM   #10
adrnln
Member
 
Join Date: Mar 2004
Location: NE Wyoming
Posts: 36
iTrader: (0)
Default

RRFPR goes AFTER the stock fuel pressure regulator. Depending on the year the stock FPR is on the fuel rail or under the driver's seat. Make sure you follow the D/A manual because the later model M44's need to have the fuel line take a "U" turn after the 3/2way valve to the AFPR (RRFPR) and then to the fuel tank.

Also, 75-90psi seems a bit high for 8psi. I think it should be closer to 68psi.

Sheridan
__________________
98 supercharged 318ti Sport
"It's better to be blown than stroked"
adrnln is offline   Reply With Quote
Old 09-24-2009, 09:53 AM   #11
denglish318ti
Senior Member
 
denglish318ti's Avatar
 
Join Date: Jan 2008
Location: Leeds, England
Posts: 133
iTrader: (0)
Default

Real OEM would have you believe that all M44 fuel pressure regulators are in the same place (on the fuel rail). This is a 94 car:
http://www.realoem.com/bmw/showparts...16&hg=13&fg=15
And this is a 99 car:
http://www.realoem.com/bmw/showparts...16&hg=13&fg=15
I have done a lot of research into the correct fuel pressure and it seems most people have the best results at about 85psi. Mine was at about 70psi, and as soon as I turned it up to 80psi the car was a totally different animal, so much better.
Just my finidings though
__________________
Supercharged 318Ti
denglish318ti is offline   Reply With Quote
Reply

Bookmarks


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
FS: RRFPR for sale! performanceisland US and North America 5 03-23-2010 06:48 PM
WTB: RRFPR for DASC denglish318ti US and North America 0 03-24-2009 05:58 PM
Is this a RRFPR? denglish318ti Induction 4 03-23-2009 04:58 PM
engine adjusting screw? timing adjusting screw ? is there any ajustment ? feelstyl Engine 2 04-17-2008 06:54 PM
What psi should a RRFPR generate? DASC the governor Induction 14 02-11-2008 05:39 AM


All times are GMT +1. The time now is 03:40 AM.


.
Powered by site supporters
vBulletin Version 3.8.8
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Copyright ©1999 - 2018, 318ti.org
© vBadvanced CMPS v3.2.2
[page compression: 107.13 k/127.14 k (15.74%)]

318ti.org does not warrant or assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information or products discussed.