12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

things i have done and the problems im having

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Old 07-09-2009, 12:34 AM
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Default things i have done and the problems im having

okay so heres the down low

1994 CTD 5speed 160 WH1C turbo etc.. etc...

things i have done:

at first i put gauges in it pyro, boost, and im waiting for my fuel pressure

then i put a #8 plate in ATWF with the housing ATWF too "all the way forward" put a BHAF on it and the boost elbow with the set screw all the way in

then after reading more i built my own #100 plate and ground the barrel on the AFC arm .080 then swapped the washers got the arm to move a lot more etc... i have the star wheel cranked and the smoke screw adj to my likings also removed the silencing ring for good sound!

now the problems:

i got good smoke i mean its a smoke show if i want it to be. im not hitting anymore than 18-20 lbs of boost i can cap the waste gate off with the vise grips or something and i might get 25-27 lbs of boost... from what i understand my turbo with my mods should be over spinning itself with the wastegate capped off but i can't even get 30-35 lbs of boost

so im at a loss i dunno what im doin wrong but i think i should be upper 200's in horse power if not around 300?? am i wrong but my truck deff does not feel like that feels like im running at about 225 horse roughly! maybe 50 more than stock!

any idea's and suggestions would help

also could i be "drowing it with too much fuel"?
 
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Old 07-09-2009, 12:37 AM
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get a turbo to handle it
 
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Old 07-09-2009, 12:44 AM
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so no way my turbo will put out 30-35 lbs?? simple and plain?
 
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Old 07-09-2009, 12:48 AM
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yes it can be done. i hit 38 on a WH1C which is carried over from the 1st gen 12v. its not good to go over 30psi, to hot for one, over spooled for two. 350 can be achieved with bigger injectors, fuel plate, dvs, timing, plugged gate. 4th gear and peg it
 
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Old 07-09-2009, 02:33 AM
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what kind of cheap decent turbo would you recomend!? to achieve 30-35 lbs safely i will be doing the rack plug and DV's and the timing! if i do the DV's do i need to do the injectors?

appreciate the help man
 
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Old 07-09-2009, 02:38 AM
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hx 40 is by know means a sloush turbo.. they just do not like being barked they can bust the shaft
 
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Old 07-09-2009, 08:28 PM
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so your saying an hx40 is a decent cheap turbo that could help me out a lil bit? just be nice?
 
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Old 07-10-2009, 08:19 AM
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i just bought a 6 blade billet wheel and housing for a hx40,put on your existing exaust housing and you have a hx35/40 hybrid.i know alot of people like them.the reason i bought it is cause i turned the fuel way up(i mean i can hit 1600*)and the most i could get out of it was about 27# so i believe i'm drowning mine.i fuel real hard on the top.also look into a 3000gsk,i'm doing that also,you need fuel to build boost,i don't knoe where you're shifting at,but if it's much over 2000 rpm's you are defueling.
 




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