 D-Jet Fuel Pressure Regulator, How high should it go? |
|
|
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
|
| GregAmy |
 Mar 2 2020, 08:38 AM
Post
#1
|
|
Advanced Member  Group: Members Posts: 2,651 Joined: 22-February 13 From: Middletown CT Member No.: 15,565 Region Association: North East States 
 |
What should be the maximum capability of the stock D-Jet pressure regulator? Mine only goes to 36.
If that's normal, is there another similar-format regulator that can go up to around 45psi? Background: Microsquirt project. Was hoping to use the stock regulator, but now need something that I can easily mount in the same location, if possible. Injectors I'm using are rated at 43.5psi. Discuss! |
   |
 
|
  |
Replies
| GregAmy |
Mar 9 2020, 11:40 AM
Post
#2
|
|
Advanced Member Group: Members Posts: 2,651 Joined: 22-February 13 From: Middletown CT Member No.: 15,565 Region Association: North East States
|
Quick update... per Summit Racing, MSD has discontinued the MSD-2220.
Rock Auto has the Delphi version, says it's 29psi. I tried two used ones from Chris; one only got to 34psi, the other had the locking nut stuck so I didn't force it. NAPA can get me a "FPR for the Porsche 914" but it's special-order only, and they don't know how adjustable it is. Rock Auto looks like the Delphi version as well, 29psi listed. I can't find a FPR for the car on Pelican's web site. I'm guessing that if I'm running more than 35-36 psi I'll have to go aftermarket on the FPR... |
|
|
|
| JamesM |
Mar 9 2020, 11:05 PM
Post
#3
|
|
Advanced Member Group: Members Posts: 2,187 Joined: 6-April 06 From: Kearns, UT Member No.: 5,834 Region Association: Intermountain Region |
Didn't have time to tear into one this weekend but from the looks of the diagram im wondering if MSD didnt get to higher pressure via a longer adjustment screw. Would need to measure how much more could be added before the coils bind. From the drawing though I would think you should be able to dead head the pump with a long enough adjustment screw
Not sure when the last production run would have been, but guessing at 50 years old the OE springs may be getting a bit tired.  |
|
|
|
| JamesM |
Mar 10 2020, 12:09 AM
Post
#4
|
|
Advanced Member Group: Members Posts: 2,187 Joined: 6-April 06 From: Kearns, UT Member No.: 5,834 Region Association: Intermountain Region |
Just did a bit more searching... this is an interesting read on the pressure regulator
https://www.thesamba.com/vw/forum/viewtopic...s+inside++fails Cant tell for sure but it looks like the adjustment screw may be a custom part, so swapping may be out of the question. Also looks like new ones from anywhere may have gone NLA sometime over the last couple years and if that post is to be believed these have a high potential for wear that will affect every used one out there. May be time to look at other options |
|
|
|
Posts in this topic
GregAmy D-Jet Fuel Pressure Regulator Mar 2 2020, 08:38 AM
914Sixer Stock set to run 28-30. In vapor lock areas up to... Mar 2 2020, 09:31 AM JeffBowlsby 43.5 PSI is the conversion from 300kPA which is th... Mar 2 2020, 10:06 AM
GregAmy You sure your injectors are rated that high for in... Mar 2 2020, 10:41 AM
nordfisch
- You Posted: Injector Table
Hi Jeff,
the table... Mar 2 2020, 02:33 PM JeffBowlsby As I thought...thats maximum flow, without a safet... Mar 2 2020, 11:45 AM GregAmy
As I thought...thats maximum flow, without a safe... Mar 2 2020, 11:49 AM 914_teener
As I thought...thats maximum flow, without a saf... Mar 2 2020, 12:58 PM GregAmy I'm confused. Flow and pressure are related h... Mar 2 2020, 01:19 PM 914_teener
I'm confused. Flow and pressure are related ... Mar 2 2020, 02:29 PM ChrisFoley
no problem running these at 36psi and putting in... Mar 2 2020, 05:56 PM GregAmy
Why even go up to 36? Calculate the flow at 30psi... Mar 2 2020, 06:54 PM JamesM Was poking around a bit and and found these inject... Mar 3 2020, 11:50 PM Bleyseng The Ljet has a variable fuel pressure regulator to... Mar 2 2020, 12:16 PM JeffBowlsby Hi Norbert, thank you for the Bosch list its very ... Mar 2 2020, 05:48 PM nordfisch
... The Weiss chart was a reference for me back t... Mar 3 2020, 02:00 PM JamesM Higher pressure provides better fuel atomization, ... Mar 3 2020, 03:46 PM 914_teener
Higher pressure provides better fuel atomization,... Mar 3 2020, 05:40 PM JamesM
I know some folds have done MS systems so maybe t... Mar 3 2020, 07:03 PM 914_teener
I know some folds have done MS systems so maybe ... Mar 3 2020, 08:17 PM GregAmy The OP didn't say if he was going to retain th... Mar 3 2020, 08:36 PM 914_teener
The OP didn't say if he was going to retain t... Mar 3 2020, 08:41 PM JamesM
Whole lotta dick-swinging around here and yet...n... Mar 3 2020, 11:09 PM JeffBowlsby The concern about constant operation at maximum pr... Mar 3 2020, 04:30 PM JamesM
The concern about constant operation at maximum p... Mar 3 2020, 07:52 PM JamesM Just remembered I still have the paperwork for min... Mar 4 2020, 12:07 AM JamesM
What should be the maximum capability of the stoc... Mar 4 2020, 01:39 AM JamesM Hey, looky what I found....
https://www.injector... Mar 4 2020, 02:15 AM JamesM Found another picture of the MSD 2222 where you ca... Mar 4 2020, 02:48 AM GregAmy
Found another picture of the MSD 2222 where you c... Mar 5 2020, 10:08 AM JamesM
Found another picture of the MSD 2222 where you ... Mar 5 2020, 06:30 PM GregAmy Still has me curious why you are only seeing ~35.
... Mar 5 2020, 07:27 PM GregAmy Since we're going deeper into the design...
A... Mar 4 2020, 06:19 AM JamesM
Since we're going deeper into the design...
... Mar 5 2020, 12:29 AM GregAmy Eric, I'm actually starting to "write all... Mar 5 2020, 06:18 AM barefoot Many years ago I had a project to design automotiv... Mar 4 2020, 06:19 AM Montreal914
Though amazon is great and showed me this much c... Mar 5 2020, 12:05 AM JamesM
[quote name='JamesM' post='2791279' date='Mar 3 2... Mar 5 2020, 09:38 AM JeffBowlsby Check this.
"35 gal/hr"
Seems a bit ... Mar 5 2020, 08:14 AM JamesM
Check this.
"35 gal/hr"
Seems a bit... Mar 5 2020, 09:51 AM JeffBowlsby
Check this.
"35 gal/hr"
Seems a bit... Mar 5 2020, 11:03 AM GregAmy It's not the pump. I went out there, jumped th... Mar 5 2020, 07:46 PM ChrisFoley I have a few FPRs here. You're welcome to try ... Mar 6 2020, 06:38 AM GregAmy Thank you sir!We're already overdue for a ... Mar 6 2020, 07:58 AM JamesM
Thank you sir!We're already overdue for a... Mar 7 2020, 02:48 AM Montreal914 Just catching up on the thread this morning.
Greg... Mar 7 2020, 11:03 AM JamesM Knowing that 914 l-jet regulators are a direct swa... Mar 10 2020, 12:27 AM JamesM This is interesting. In the latest bosch catalog ... Mar 10 2020, 01:22 AM JamesM https://shopbhp.com/products/kit-car-fuel-p...ant=... Mar 10 2020, 01:49 AM GregAmy May be more bad news for d-jet
Well crap.
I have ... Mar 10 2020, 06:45 AM JamesM
May be more bad news for d-jet
Well crap.
I have... Mar 10 2020, 09:07 AM ChrisFoley Bosch Fuel Pressure Regulator at Pelican Mar 9 2020, 02:26 PM GregAmy And...they're out of stock. Refers me to ... Mar 9 2020, 04:21 PM ChrisFoley You might want to start soaking the three used one... Mar 9 2020, 06:14 PM GregAmy Here's a 3-bar one. eBay ad claims (I think) i... Mar 10 2020, 07:31 AM GregAmy Am I correct in inferring his non-regulator one is... Mar 10 2020, 09:24 AM JamesM
Am I correct in inferring his non-regulator one i... Mar 10 2020, 01:13 PM GregAmy Mario's response, paraphrased:
This:
Univers... Mar 10 2020, 07:14 PM ChrisFoley That's probably what Mario was thinking you wo... Mar 10 2020, 12:20 PM GregAmy His stuff looks nice, but I sent an email him to f... Mar 10 2020, 12:59 PM Montreal914 Seems like the way to go! Mar 10 2020, 09:50 PM GregAmy Mario 3-bar FPR procured and installed. Shows 41.5... Mar 13 2020, 07:52 PM ChrisFoley
Asking for a friend. :miles:
:shades2: Mar 14 2020, 05:49 AM |
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 2nd April 2026 - 04:56 PM |
Invision Power Board
v9.1.4 © 2026 IPS, Inc.