 D-Jet Fuel Pressure Regulator, How high should it go? |
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| GregAmy |
 Mar 2 2020, 08:38 AM
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#1
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Advanced Member  Group: Members Posts: 2,504 Joined: 22-February 13 From: Middletown CT Member No.: 15,565 Region Association: North East States 
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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! |
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| JeffBowlsby |
Mar 2 2020, 11:45 AM
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#2
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914 Wiring Harnesses & Beekeeper Group: Members Posts: 8,963 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None
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As I thought...thats maximum flow, without a safety factor.
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| GregAmy |
Mar 2 2020, 11:49 AM
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#3
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Advanced Member Group: Members Posts: 2,504 Joined: 22-February 13 From: Middletown CT Member No.: 15,565 Region Association: North East States
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QUOTE(JeffBowlsby @ Mar 2 2020, 12:45 PM)  As I thought...thats maximum flow, without a safety factor. So then...where should it be run? Higher pressures reduce duty cycle and vice versa. It'll never run more than 85% duty cycle regardless or I'll swap to higher-flow injectors (which is highly unlikely, given the dead-stock engine's original awesome <90 horsepower and 5800 RPM redline...these should be easily sufficient.) BTW, I don't see the word "maximum" in there anywhere...all I see is a flow rate at a specified pressure, which as you note you note is standard practice. Are you recommending not running it at 43.5psi? If not, then where? |
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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 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 GregAmy Quick update... per Summit Racing, MSD has discont... Mar 9 2020, 11:40 AM JamesM Didn't have time to tear into one this weekend... Mar 9 2020, 11:05 PM JamesM Just did a bit more searching... this is an intere... Mar 10 2020, 12:09 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 |
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