Engine/Transmission (1994 - 1998) Dynod Today

[JKouzez]

Well i dynod today before you read on try to guess my HP. Anyway I was quite dissapointed 370HP 790Tq. i know i am limited by the 160 pump i have but it should be capable of 100 more Hp especially with the twins. So what are yalls suggestions im looking for 450HP that should be a realistic goal what kind of tuning should i do or who would yall recomend in the DFW area i know my setup is capable of that i just dont have the knoledge of how to do it thanks

 

[SCosgriff]

I have the same pump as you. My mods are way different but, I am going to dyno on Sat. I have a single 40cm compressor and 14cm housing. 215's custom plate 4k gov springs, heavy duty exhaust valves. 4" turbo back Twin Ram Big Head waste gate, valve body mods.



I'll let you know

 

[DRAG DIESEL]

160 pumps are fun... can't wait to build me a BIG pump. :-laf

 

[CWinslow]

sounds to me like maybe the twins are a bit of overkill for your app. I was going to run twins, but the guys at htt have talked me out of it they said if I am not getting over 500 hp. The twins are actually going to hurt me more than help

 

[RHARVEY]

That depends if your towing or not. . For what I do with my truck... I wont go back to a single. .



Rick

 

[Grey Wolf]

Are you sure that your truck came up to full boost on the Dyno ?

 

[JKouzez]

yes actually i was worried about that because last time i dynod i couldnt this time it went all the way to 50 psi on the gauge and i could hear the external gate opening up.

 

[CWinslow]

what is your twin set up like 50 psi sounds pretty low to me.

 

[JKouzez]

wh1c with 12 housing and ht60 with 23cm housing with an external gate i can peg my 60 psi gauge but i use a boost controller and hold it at about 50 because my head is not taken care of yet. I dont think more boost is the key because i hear of people making 500 + HP on a single at 40 psi.

 

[Voodoo Trucker]

I have a 94 160 h. p. 2x4 227,779 miles with the following mods 0 plate, 4kgs, 370's, 16 btdc, 191's, 60lbs. valve springs, HTT66 modified turbo (single), and 4'"straight piped. Stock slush box and convertor with lock up switch. Dyno #'s 362. 8 and 710 lbs. ft. I also felt I should have done better. I think it boils down to timing and fine tuning. Think about this, on a 370 h. p. marine engine (stock) timing is set @ around 22 degrees. Also remember they run a little bit lower on C/R among other things that have to do with C. P. L # Just want to help .

 

[Cummins4Life]

I think your numbers are pretty close for your mods, twinned or not.

Here are some numbers from my truck:

100plate forward, 181DV's, PDR370's, "hotrod" HX40/16 16* -362hp 780tq

0plate forward, 191DV's, PDR370's, HX35/12 16*-340hp, 890tq



Looks like you have plenty of air just need some more fuel and timing.

 

[JKouzez]

hmmm ok i guess i just need to do more tuning on my current set up to get some higher numbers. Interesting that that you lost about 20 hp and gained about 100 ft pounds by adding more fuel to your set up however it should of made your truck faster. It is my understanding that Hp takes over at i believe it is 5252 rpm we obviously never see that so its torque that is moving our trucks the entire time. Hmm maybe that is why i am able to easily beat a supposedly 450 Hp powerstroke because those v8s dont have the torque output of our inline 6s. i am sure someone more eduacated than i will chime in and correct me on this.

 

[Dual EE]

I think your #'s are low with twins. I wouldn't be happy to go through the expense of twins and only have another 25 ponies then my current set up.

 

[JKouzez]

yea that is pretty much what has happened and its got me stumped

 

[1dslram]

370 hp at 50# of boost says that you have pleanty of air, now you need to get some serious amounts of fuel. If you step up the fueling the HP will follow until you run out of air that the top turbo can handle.

Bruce

 

[Justin1889]

Bigger injectors or bigger pump which one is it going to be. Oo.

 

[RonA]

I just swapped pumps last week. I went from a pump with a claimed output of 360cc to a 215 pump with a claimed output of 400cc. The difference is like night and day. You will not see very many trucks with compounds running 500 hp at 40psi.

 

[chrleb1]

I would try a different small turbo. You are trying to force too much air through that little thing (on the exhaust side and compressor side). Anyone can make a set of twins make 50 lbs of boost. The reason why is compounding. Think of it as a garden hose. If you have 50 lbs of water pressure in a garden hose and a fire hose, which is going to flow more? The fire hose, cause you are limited to the the flow area in a garden hose. It is not all about boost, it is about air flow. The more efficient your intercooler is, the larger set of twins (or turbo) you can run. The intercooler fools the turbo into thinking that you have a larger motor than you actually have. Also, the more boost you run, the higher chance you are going to disturb the spray of your injectors. Just something to think about.

 

[Reb.B]

Oh lord, ... . lol, twins and a 160 pump,lol. Some people just don't know where to blow their wad. Get a 215 pump, turn it up, throw a descent sized switzer-borgwarner-airwerks turbo on there and get over 450 close to 500HP. Twins are a pain in the butt. If they run good on the street, then they are too small for the dyno. Rick, if those twins are soo good why do you have to pull over when you tow your trailer. It because of too much boost. When you are making 55 psi boost you are radiating 450 degrees of heat in front of your radiator. A nice single with no compounding is the way to go. Shoot, ... Joe D. made 799. 9 HP at 55 psi boost, ..... its about volumn, not psi!

 

[1dslram]

A large single is OK I have been there done that, slow to spool and the air gets hot at the higher pressures. Almost any twins is better than a large single. Faster spooling, and cooler air. I would never go back to a big single. It was a real ***** towing and trying to keep the smoke in check, while watching the EGT gauge was a real pain. I am glad that is in the past.

Bruce