5.9L 12V Performance Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps Related to Performance and Longevity

Citydiesel DV's and 370 marines!!!!!!!!

Thread Tools
 
Search this Thread
 
  #1  
Old 10-19-2009, 11:24 PM
97dirtydozen's Avatar
Diesel Fan
Thread Starter
Join Date: Aug 2009
Location: Manteca CA
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
Default Citydiesel DV's and 370 marines!!!!!!!!

So i was looking around for some new dv's and came across a set from citydiesel.net..I see it says about 50 more hp than 191's..it also says "why use a water pistol when you could have a fire hose"..so i got to wanderin. Would it be possible to machine stock dv's and make the hole bigger? or is it like a totally different design n what not? dont worry im still gonna buy these dv's..just a little curious thats all..

Oh and also i just ordered the 370 marines from them..is there any particular thing i will have to do to the afc to make it run properly..or do i simply put the new injectors in and play?
Thanks Bombers
 
  #2  
Old 10-20-2009, 06:08 AM
94 12valve's Avatar
Diesel Bomber
Join Date: Jan 2009
Location: Pylesville, Maryland
Posts: 3,504
Received 157 Likes on 142 Posts
Default

you may have to bump your timing a little bit more for the 370's, I would also run thinner washers to try and get the fuel back in the bowl
 
  #3  
Old 10-20-2009, 08:27 PM
97dirtydozen's Avatar
Diesel Fan
Thread Starter
Join Date: Aug 2009
Location: Manteca CA
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
Default

Well my timing is already bumped to 16*..and what washers are you talking about?
 
  #4  
Old 10-20-2009, 10:10 PM
FastCR's Avatar
Diesel Bomber
Join Date: Aug 2007
Location: Livingston Montana
Posts: 1,525
Received 79 Likes on 66 Posts
Default

Does anyone have links on writeups on the washers?

They shim the marine injector up enough that it kinda sprays in the piston bowl, right?
 
  #5  
Old 10-20-2009, 11:12 PM
12valvetater's Avatar
Diesel Bomber
Join Date: Oct 2008
Location: Pennsylvania
Posts: 1,474
Received 35 Likes on 34 Posts
Default

all injectors need a way to seal in the bottom of the bore they sit in ours have little copper washers they come in three thicknesses thick medium and thin the thin washers came on the 215 engines if you use these thin washers it puts the injector deeper into the ombustion chamber so they are set deeper in the piston bowl becuase marine injectors have a wider spry pattern having the nozzle deeper in the bowl keeps the fuel in the bowl more and where it swirls with the air charge better and helps to mix everything this gives a cleaner more effiecent burn
 
  #6  
Old 10-21-2009, 12:17 AM
12vcummins96's Avatar
Administrator

Join Date: Aug 2009
Location: Pearland Tx
Posts: 5,765
Received 340 Likes on 273 Posts
Default

very well put tater
 
  #7  
Old 10-28-2009, 11:23 PM
97dirtydozen's Avatar
Diesel Fan
Thread Starter
Join Date: Aug 2009
Location: Manteca CA
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
Default

Well i got the new 370's in last friday night..and it seems to still misfire..but now all of my injectors are working..before injector #4 was completely dead..any ideas what would cause this??
 
  #8  
Old 10-28-2009, 11:30 PM
Benjamin's Avatar
Bombardier
Join Date: Mar 2007
Location: Da' Dirty South
Posts: 9,655
Received 607 Likes on 502 Posts
Default

do you think with the injector going bad it could have damaged the Pump?

BTW have fun controlling EGT's with a stock charger with those injectors and delivery valves and a 0 plate....
 
  #9  
Old 10-30-2009, 10:59 PM
97dirtydozen's Avatar
Diesel Fan
Thread Starter
Join Date: Aug 2009
Location: Manteca CA
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
Default

Damn it! i heard about that..and i hope a bad injector didnt damage my pump..it almost sounds like theres air in the system or something..very slight misfire.
 
  #10  
Old 10-31-2009, 07:30 PM
Smokem's Avatar
Diesel Bombers Sponsor
Join Date: Sep 2009
Location: Iowa
Posts: 391
Likes: 0
Received 46 Likes on 33 Posts
Default

How could a bad injector damage the injection pump? Is the missfire at a certain RPM, same unloaded as loaded?
 



All times are GMT -5. The time now is 03:48 PM.