Advertisement
If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Home Who's Online Today's Posts HP Calculator CompD Gift Shop Mark Forums Read
Go Back   Competition Diesel.Com - Bringing The BEST Together > The Starting Line > Competition Vehicle Build Tech > Custom Fabrication
Register Members List Timeslips EFI Live Library Invite Your Friends FAQ Calendar Mark Forums Read

Closed Thread
 
Thread Tools
Old 12-17-2010, 04:43 PM   #21
joefarmer
 
joefarmer's Avatar

Name: joefarmer
Title: MR. Supreme Overlord
Status: Not Here
Join Date: Jul 2006
Location: ohio
Member`s Gallery
Posts: 6,137
Hmm... I guess I have to find a CP3 bench and go test. Thanks guys!
__________________
brandon'); DROP TABLE Users;--
1948 Dodge 1.5t 12v RH swap | 99 F250 12v RE test rkt | 11 X5 'no soup' | 08 F250 CR RE swap | 05 2500 CR 68 standalone
firepunk.com
 
Old 12-17-2010, 06:50 PM   #22
Stingpuller
 
Stingpuller's Avatar

Name: Stingpuller
Title: Too Much Time
Status: Not Here
Join Date: Feb 2007
Location: central Ohio
Member`s Gallery
Posts: 1,166
Base pressure

If I have to much pressure to soon it will smoke at idle and pop and bank as soon as the boost starts to come up. It will not handle anymore pressure and function like it should. I have run 10 to 85 psi and 15 at idle and 45 seems to work for me. It also matters on mine how hot the fuel is at the rail. Jeff
__________________
2007 GMC C4500 Regency Western Hauler and 235" POWERFLOW Dragster, Powerflow exhaust, 80mm Fleece turbo, Fleece injectors, On Track Auto front mount CP3, SoCal Diesel, Hughes powerglide, PTC converter, Nytrex nitrous,Isspro,FueLabs, Mike's Race Wiring, New Era Diesel, Hamilton Cam and all the guys at the shop
 
Old 12-17-2010, 08:21 PM   #23
homewrecker
 
homewrecker's Avatar

Name: homewrecker
Title: gear jammer
Status: Not Here
Join Date: Oct 2007
Location: Statesville, N.C.
Member`s Gallery
Posts: 2,137
Quote:
Originally Posted by DIESEL_POWER View Post
on the cummins pump more inlet psi is needed for RPM, on a d-max it has a suction side allready, the cummins does not. the d-max pump is allready better in stock form alone. In theory a stronger fill charge should net better RP.....
So youre saying the cummins pump cant pull its own fuel? I have accidently left my fass pump unplugged on several occasions and the truck ran fine with 10k in tow.
__________________
05 ram 3500 4x4 QC dually SOLD

05 2500 QC Laramie sport
Garmon built tranny
FI 63/68/.91 ETR-HO S480/92/1.25
dual pumps
105% injectors
 
Old 12-17-2010, 09:07 PM   #24
full pull
 
full pull's Avatar

Name: full pull
Title: Sales&Support Valair Inc
Status: Not Here
Join Date: Jan 2009
Location: Texas
Member`s Gallery
Posts: 1,683
Quote:
Originally Posted by Stingpuller View Post
If I have to much pressure to soon it will smoke at idle and pop and bank as soon as the boost starts to come up. It will not handle anymore pressure and function like it should. I have run 10 to 85 psi and 15 at idle and 45 seems to work for me. It also matters on mine how hot the fuel is at the rail. Jeff
Tell me about fuel temps.. I have debated running a cool can, like the gasser pullers run. I would think you would get more fuel if it was cooler but not sure what this would do to rail psi and if the injectors would like it.
__________________


Valair Performance Series Clutches

garywolf@valairinc.com

Big Bad Wolf Pulling

Valair, Hamilton Cams, Air Dog, Mineral Wells Collision, Dans Diesel Performance
 
Old 12-17-2010, 09:21 PM   #25
WICKEDDIESELS
 
WICKEDDIESELS's Avatar

Name: WICKEDDIESELS
Title: SUPPORTING VENDOR
Status: Not Here
Join Date: Dec 2006
Member`s Gallery
Posts: 867
Someone needs to pack one with ice, and compare it to rail pressures when hot.
__________________
Use your experience to help someone
http://www.motorsportdiesel.com
 
Old 12-18-2010, 07:23 AM   #26
Stingpuller
 
Stingpuller's Avatar

Name: Stingpuller
Title: Too Much Time
Status: Not Here
Join Date: Feb 2007
Location: central Ohio
Member`s Gallery
Posts: 1,166
Yep!!!

Cold is good! Jeff
__________________
2007 GMC C4500 Regency Western Hauler and 235" POWERFLOW Dragster, Powerflow exhaust, 80mm Fleece turbo, Fleece injectors, On Track Auto front mount CP3, SoCal Diesel, Hughes powerglide, PTC converter, Nytrex nitrous,Isspro,FueLabs, Mike's Race Wiring, New Era Diesel, Hamilton Cam and all the guys at the shop
 
Old 12-18-2010, 08:15 AM   #27
Brayden

Name: Brayden
Title: Comp Diesel Sponsor
Status: Not Here
Join Date: Feb 2007
Member`s Gallery
Posts: 596
Quote:
Originally Posted by DIESEL_POWER View Post
on the cummins pump more inlet psi is needed for RPM, on a d-max it has a suction side allready, the cummins does not. the d-max pump is allready better in stock form alone. In theory a stronger fill charge should net better RP.....
What is a suction side? I haven't seen that in the drawings.

It has a gear pump, that's for sure. There is a suction throttle built in to the gear pump that limits overpressure. You can modify it and take that feature out if you think you need more pressure. Split the gear pump open and check it out.

We're running a pump on the JJ Machine truck at about 15% overdrive with no issues yet.
 
Old 12-18-2010, 01:17 PM   #28
joefarmer
 
joefarmer's Avatar

Name: joefarmer
Title: MR. Supreme Overlord
Status: Not Here
Join Date: Jul 2006
Location: ohio
Member`s Gallery
Posts: 6,137
Quote:
Originally Posted by Brayden View Post
What is a suction side? I haven't seen that in the drawings.

It has a gear pump, that's for sure. There is a suction throttle built in to the gear pump that limits overpressure. You can modify it and take that feature out if you think you need more pressure. Split the gear pump open and check it out.

We're running a pump on the JJ Machine truck at about 15% overdrive with no issues yet.
How many rpm is the JJ Machine truck turning?
__________________
brandon'); DROP TABLE Users;--
1948 Dodge 1.5t 12v RH swap | 99 F250 12v RE test rkt | 11 X5 'no soup' | 08 F250 CR RE swap | 05 2500 CR 68 standalone
firepunk.com
 
Old 12-18-2010, 05:19 PM   #29
Brayden

Name: Brayden
Title: Comp Diesel Sponsor
Status: Not Here
Join Date: Feb 2007
Member`s Gallery
Posts: 596
It's on the 3700-4000 going down the track.
 
Old 12-19-2010, 02:38 AM   #30
joefarmer
 
joefarmer's Avatar

Name: joefarmer
Title: MR. Supreme Overlord
Status: Not Here
Join Date: Jul 2006
Location: ohio
Member`s Gallery
Posts: 6,137
I was hoping you'd say 6-7k.
__________________
brandon'); DROP TABLE Users;--
1948 Dodge 1.5t 12v RH swap | 99 F250 12v RE test rkt | 11 X5 'no soup' | 08 F250 CR RE swap | 05 2500 CR 68 standalone
firepunk.com
 
Old 12-20-2010, 10:23 PM   #31
Brayden

Name: Brayden
Title: Comp Diesel Sponsor
Status: Not Here
Join Date: Feb 2007
Member`s Gallery
Posts: 596
Not yet.... I'd be happy with 5000
 
Old 12-21-2010, 05:40 AM   #32
DIESEL_POWER

Name: DIESEL_POWER
Title: NGM Diesel
Status: Not Here
Join Date: Jul 2006
Member`s Gallery
Posts: 5,178
Quote:
Originally Posted by Brayden View Post
What is a suction side? I haven't seen that in the drawings.

It has a gear pump, that's for sure. There is a suction throttle built in to the gear pump that limits overpressure. You can modify it and take that feature out if you think you need more pressure. Split the gear pump open and check it out.

We're running a pump on the JJ Machine truck at about 15% overdrive with no issues yet.
i know the d-max pump is designed for suction from the factory.

the cummins is designed for positive psi inlet from the factory

That was my point, i dont mod them myself though.
__________________
Proverbs 3:5-6 (KJV)
5 Trust in the Lord with all thine heart; and lean not unto thine own understanding. 6 In all thy ways acknowledge him, and he shall direct thy paths.
 
Closed Thread

Thread Tools

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


All times are GMT -5. The time now is 02:22 PM.

 


Powered by vBulletin
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©2006 - 2024, CompetitionDiesel.com
all information found on this site is property of www.competitiondiesel.com