I got killed by the KDP so I've decided to upgrade a bunch of stuff while I'm in there.



I have a bunch of questions and will be posting them as I go.

Here's a list of my planned mods/upgrades, anything I'm unsure of or would like comments I'll put a (?) after it.

- Twins WH1C over S475?
-CAT S475 ?(75/114 comp 6" inlet, 85mm exducer turbine) I already have it, was lying around...
-5" DP back (I have a 4" hx40 turbo mount pacbrake I'd like to throw in if it wouldn't cork my exhaust too much)?
-5x.011 SAC Injectors
- 60lb springs
- 4k gsk
- #7 banks plate
- afc mods
- mack plug
- colt stage3 big stick cam
- mild ported head
- ARP 12mm Studs
- banks twin ram
- 5spd manual, 4.10's, DRW
- DD clutch?
- 1-3/8" input shaft?
- 5th gear nut retainer
- rebuild vacuum pump
- replace all seals/gaskets, whatever I can get to.

I have a long way to go but it'll be a heck of a lot better. I mainly DD my truck, so spirited street driving, want to take it to the 1/8 a couple times just because, and only tow 10k or under a couple times a year or less, but want to retain ability to tow 15-20k and have it easy for my gf to drive (if that'll ever happen :hehe

Any input is appreciated. Pics to follow...

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When pulling the cam I heard a "thud" Damn!




My stock injectors were not seating well.





My solution




The CAT turbo







My LUK stock replacement clutch was barley alive after 100k miles/12 years, I think the guy I bought it from towed a bunch.

 

Could you stick a little more info out here on this thread about that CAT turbo? Gonna be lookin into a new one soon, and I was thinking of doing something along those lines..

 

I'm not 100% sure it's an S400, I was just told that it's a variation of a Garrett GT47.

 

But either way it's a bigger turbo that the stocker hx35 right? I'm not turbo inclined, haha, learning as I go

 

yes significantly bigger, from what I can tell (I'm prob wrong though ) it is a 75/85/1.32

 

I'm gonna take this opportunity to ask what each of those numbers stand for if you dont mind schoolin me a little bit on turbos.

 

Confused about turbo specs... some gurus please enlighten me - Dodge Cummins Diesel Forum

Turbocharger Basics - Diesel Engines - Diesel Power Magazine

Turbo Tech Basic | Turbobygarrett

 

Small update, I've been working a ton and haven't got around to working on Sue much.

I found a killer deal on a Colt Stage 4 Cam, it's bigger than the stage 3 I was planning on, but is pretty close to Hamilton's 188/220 cam that they recommended.

Stage 4 Cam Specs:

181/218 .280/.323 107.5 lsa




I got a bunch of parts in from a Cummins employee acquaintance:




Got my HE431VE turbo in, Specs & Pics:

HE431 ->comp 60-85 turbine 76-67





Fixed my Timing Case with help from a friend and his TIG and Mill:












Here's a quick shot of the mild bowl work I had done, not a great pic:




My own exhaust manifold porting, Still in progress in the pics:

 

And in case any one needs valve-train weights or is just curious like I was:

Intake:


Exhaust Valve:


Keepers:


Retainer:


60lb Valve Springs:


And a shout out to Tork Tek for a great tool. a little snug on the 60lb springs but worked great:

 

Keep the pics comin man. Nice job so far!