Hi all. Just turned 21 a couple days ago(Not a drinker, i have to much to lose) and I attend college for mechanical engineering. Been saving up and planning for awhile. This winter I would like to rebuild of the powertrain on my 98 f-350 Dually (2wd). I have some questions that i can only find answers that scratch the surface maybe yall can help with. Input from those that have real world experienced would be nice.
The master plan is to build a compound turbo setup that is tow friendly and have some power. It's journeys consist of mostly street driving not towing 30 miles at a time, but sometime sees 300-500 mile roadtrips with 10k lb
. Towing consists of 1/4 of the miles. A reliable 500rwhp on a nice tow tune with low boost is desired and i don't believe that's not realistic when done correctly.
I want to go with Irates t4 mount, have read nothing but great things about Jake at Irate. As far as turbos go I was leaning to borgwarner 66 for the hp turbo and somewhere in the 80's for the lp. NOT SURE on that yet. I know BW makes a kit for compounds but i don't mind doing the fab work for the second turbo and saving the money. I planned on running wastegates on both, preset the hp turbo wastegate for 30psi and run an electronic boost controller for the lp turbo wastegate so i can change it depending on the tune for reliability, towing, and street-ability.
I want to run twin walbro fuel pumps and a 5/8 pickup because its; simple, cheap, and effective. I saw fuelabs stuff and its cool but its a couple hundred more to run it. Gonna do my own filter setup. I was thinking 250/200 would do the trick, anymore than that i really didn't think would be friendly for street driving.
Going to go with the 17 degree hpop
but am thinking about running the twin pumps. NOT sure how well packaging would work with the t4 mounted turbo but i didn't know if two hpops was truly necessary. Probably more efficient for injectors, experienced input on this would be nice.
Planned on buying carillo forged rods though its the biggest dent in the "Budget" if you could call it that
. I am thinking the $2700 would easily be worth peace of mind when its together.
Big kicker here. I have found many threads about cutting/ coating lowering cp of mahle pistons. I may call a few engine builders I'm friends with from drag racing that also build pulling motors and discuss with them. I am building the motor but have to outsource any kind of machine work. Input about lowering cr
would be helpful. I am knowledgeable about gas stuff but I would love words from the wiser that have played with the stuff. Input from tuners would be useful.
Would like to keep boost under 70 somewhere around the 60 relm for reliability and the fact that i would not like to put multiple sets of head gaskets in it. I've read up on fire rings but i read they are not really intended for street use. We use fel-pro on all of our big inch high hp ford motors(588 Big block nitrous ford makes 1100hp on nuts and spray 800hp though 1 system, and a 582 procharged big block ford that makes 2300hp @ 30psi) and have never ran into issues. Input from those running or ran 45-60 psi
on non-stock gaskets that street drive?
will be rebuilt, 6L trans cooler and deep pan, triple disk converter, billet flywheel. Anybody experience issues with input/intermediate/output shaft breakage at certain power levels? Just trying to figure out the leakest winks.
I am hoping a few tuners can chime in here and share their advice, setups they have already played with that they have tunes for or something relatively close. I run a ts chip and will most likely have that reburned.
I don't want this to turn in to a huge debate, just some Friendly input please