Number47

OK I've been lookin' for a while now to find a parts list of everything need to TT my 24v. now understand the concepts and most of the parts. but if some could Help me build a parts list for not just me but for any other current/future user. Now I was planning on using a HX-40 of some sort with a H3TB. but i may use a S300 due to bigger shaft. At any rate, using Source Automotive Help me build a list of part i need and include quantities. Now i'm also open for suggestions for alternate parts/turbos. also include reason for the alt part. Also include turbos that are of a common frame. Like it a Ht3b is the same frame as a s400 as an example(not likely to be correct but) and am taking suggestion on injector size to go for this setup(was thinkin 150s)Thank you for your time and on a side note I miss my adrenaline mod...

Brad

Number47

ok this is what i got so far

0407 5" Alum. Exhaust Downpipe, jigged & welded for HT3B or S400
0408 5" V-band Clamp
0420d S300 to a S400 turbo with machined wastegate valley
0422 24V S400 Turbo mount to engine
0427 High Pressure Oil Line - Engine to HT3B/S400
0427a High Pressure Oil Line - Top Turbo 2" Longer than stock
0430a 24V Water Line
0425a 3" Intercooler Pipe - Flared Ends
0426a 5" Intake Tube Kit
0437 aFe Filter for 2nd Gen Twin Turbo
0424a Charge Air Tube Kit
From what i gather the HT3b and S400 are the same frame turbo
As for parts I'm missing is a way to return the oil to the pan from the second turbo, boost boots, the turbos them selfs, exhaust manifold gaskets, and other misc bits i'm not thinking of... anyone else got anything to add?

Dr. Evil

3 piece exhaust manifold

Mike Holmen

You have both turbo already?
Here is my list about 3 to 4 3 1/2in 90 degrees. Turbine inlet flange for a BTH-3B (right part #, as there is a difference). Air Hose for 3 1/2 by about 6in long. 4in inlet into HX-40. Hot down tube, 3in exhaust, turbine exhaust flange (including wastegate dump) for the 40, turbine inlet into BTH-3B. A 1 in NPT into oil pan or pop out second drain. 1in by about 4 ft hose. 2X 3/8 hose with 4 GIC fittings on each ends.

Why a BTH-3B, a S400 is so much easier than a 3B. Borg warner does a real nice S475 turbo, cheap. The 40 is slow to lite over a 3B. You need tons of fuel for that combo.

CapnRam

Just get the BD towing twins kit, comes with everything you need, mine will be on by the end of the weekend...
Capn

Mike Holmen

Which set-up did they sell ya? Take pics and post part #'s. I'm curious on what they sold ya and how they set-up the twins.

Sorry, I want to know what the pro's are doing?

Number47

I chose the BTH-3B simply because i have a couple laying around, i would have to rebuild it but never the less thats one less turbo i have to buy. i have been looking at HE351 turbo thinking it a hx-40. i thought the hx40 had a round V-band type outlet. i can get turbos cheap being a diesel mechanic. piping kits arent a big deal because i have a welder. I didnt go with prebuild set simply becuase they are at least 1500 bucks more than if built it myself.

BigErksG2

amen to that #47. im building my twins for around $1k. i dont wanna spend 3 grand on a kit when i have a welder, grinder and common sense. i look at it as paying myself 2 grand to fab everything up... well worth it. and i do believe the 3b has a reversed spin when compared to an s400 so they are not interchangable.

Mike Holmen

#47, the HE351 over a S475 is good combo for a stick truck. The 40 will be abit sluggish. I would port out the wastegate on the 3rd gen turbo and drill the turbine housing volute so you can dump off pressure on both sides of turbine. Put in a larger wastegate flapper. How are you gonna build the hot pipe? What pressure you thinking about using on the wastegate actuvator? This will help to keep drive pressure in check and give you more top end power. The secert is to get the primary turbo to lite up hard enough. At that point the secondary turbo will start to restrict top end power. Bypassing energy off the secondary turbo, and feed the larger primary. Which increases mass flow into secondary turbo. If you have enough fuel, it will just keep pulling hard.

Mike Holmen

Yes, the BTH-3B does rotate opposite from everyone. Its a good turbo, once it lites up. Theres a few more bends to put into the air tubes. I ran a 40/3b combo before.

I errored earlier, its a 3/4in oil drain line coming off the turbo, not a 1in. I just found out the hard way.

Number47

i was gonna buy a hot pipe, but still not sure what top turbo to use. i'm split between(what i think is a poor option but one never the less) HX-35, my current turbo or a HE351G over an S475. so if i did a HE351 i would have to buy that one, and i have to buy a new s475 because the one i had on the shelf to rebuild is not rebuildable. as for fuel i'm planing at least 150 sticks and my adrenaline to boot.
I called source automotive and they said i dont need a 3 piece manifold but i think i'm going to get one just for ***** and giggles

Number47

UPDATE TIME

0407 5" Alum. Exhaust Downpipe, jigged & welded for HT3B or S400
0408 5" V-band Clamp
0420c Hx35 Hotpipe to a S400 turbo
0422 24V S400 Turbo mount to engine
0427 High Pressure Oil Line - Engine to HT3B/S400
0427a High Pressure Oil Line - Top Turbo 2" Longer than stock
0430a 24V Water Line
0425a 3" Intercooler Pipe - Flared Ends
0426a 5" Intake Tube Kit
0437 aFe Filter for 2nd Gen Twin Turbo
0424a Charge Air Tube Kit
0428 Flexible Turbo Oil Drain
0433 Straight Nipple Drain for 98-05 Dodge
0410 S400 compressor outlet V-clamp
0438 4" x 3.5" 4-ply Silicone Boot


i think im gonna go with a HE351 due to i can buy one here used of a 3rd gener for a good price. so i have to find a S475 for my lower. so my does anyone know if i can upgrade to a larger lower if(more like when) i find i want more without changing hot pipes or charge air pipe??

Mike Holmen

What diameter of air tubes you gonna use? Looks like 4in, the smaller diameter pipe (3 1/2in) helps abit on spool-up. Have you considered a garrett 3782R? If you had to buy a turbos, use the garrett 3782R over the S475. Its been the best combo that I've run. Stick truck it would spool super fast. But you have to build your own stuff and can't buy the parts of the shelf, unless you get a machine shop and a 3in turbine exhaust piece. From its the same parts. I'm currently building a GT3788R over a S475. I have adjusted a few bits parts to get the S475 to lite harder for hard wot power pulls.

Number47

well i know a guy that took a HE351 off his truck for a 64/71/14. it has 40k miles on it so it doesnt need a rebuild. we are still discussing price but it will still be worth it over the garret. i would make more parts if i had a pipe bender. i have a welder and machine shop at my disposal i just dont have a pipe bender. and dont want to buy a bunch of prebent stuff

Number47

well after looking at the HE351 and how to route piping i dont think its gonna work. with the compressor outlet pointing forward will make it increasing difficult to get the charge air to the CAC with minimum bends and boots. unless they have an aftermarket housing for it, i'm going to bail on it unfortunatly. time to research the garret turbo