Just a little more . . . . .

[DMan1198]

Iirc steed speed advertises the biggest flowing manifold, which I've directly compared to stock with no noticeable change in driving characteristics (I know when I compared them side by side the difference in port size was pretty huge) I don't have any numbers though unfortunately

[fatty]

You see any temp changes Dmann?

[DMan1198]

I can't be sure because I went from post turbo egts withe the stocker to pre turbo with the steed speed

[BC847]

Well then . .. . . .

[fatty]

What, no details? I bet those are going to sound pretty awesome. You building the piping and such yourself?

[spencerdiesel]

I second that on the details

[BC847]

Two 68/62 B/W 300SXE chargers with 12cm non-gated exhaust housings for the primaries. One 68/62 B/W 300SXE charger with a 14cm waste-gated exhaust housing for the secondary.
I will be fabricating my plumbing. Currently bouncing back and forth between SS and CRS for the hot-pipe stuff. Most likely ceramic-coat all the hot-pipe stuff regardless of what it's made of. I'll be using V-band connections for everything (cold & hot).

Right now, ciphering the actual hot-pipe assembly as far as its design in how/where the two primaries connect (I'm funny that way).

[DMan1198]

Very nice. That's roughly 1400whp of air, so you should be able to backhalf like a mofo with those babies at full song.

[BC847]

We know the full capacity of compounds is that of the primary(s). If my information is correct, the former HT3B is good for 80lbs/min. These should be good for 140lbs/min (combined).

I'm hoping the internal waste-gate of the secondary is gonna be enough for WFO.

[DMan1198]

Spec I saw for them was 76lb/min, so 152 combined which I think is actually more than some of the old s488's, and is only about 10lb/min shy of the new 488sxe.

Dauntless89 on cf took and measured the wastegate ports on one of the .7 gated housings at just a little over .7" total area, and the lever hit part of the housing, so it didn't open all the way either. He managed to drill out the gate ports to a little over 1" total area (just slightly more than what he could manage with the single port on an he351.

I know I have nowhere near the fuel you do, but my 1" ported hybrid seems to bypass pretty efficiently. I ended up with a 1.32pr out of the secondary when I had the gate held open.

[DMan1198]

As far as piping I know a few setups that cap a piece of tubing, then run pipes out to the primary flanges. A third genner did one where it mounted a primary in the traditional under location, and one like the side by side setups run them. It was a lot more complex, but it was quite interesting.

Personally I think I'd get a Y pipe, and build around it, and the primaries, so it had as smooth of flow as possible.

[BC847]

Screw it, I'm going SS. The stick in the mud was that secondary exhaust outlet is a sharp turn for where I'm going. For 3" OD pipe, a 4.5" ~ 6" CL radius is way too big. I found some 304 SS 3" Donuts in a price range I can work with on Ebay. With a 3" CL radius, I can cut out any degree turn I like and have it be very sharp if need be. Cut'n weld up a pretzel pretty quick with them.








Found some undivided T3 threaded flanges (1/2" thick 304) for the primarys. Still gotta cypher a 45* and/or a 90* ell to make the main hot-pipe. I figure a 3" V-band joint in the straight section will come in handy later when mock-up gets underway.

Found a neat little table for my portable bandsaw. It ought to come in handy cutting straight in the SS. http://www.swagoffroad.com/SWAG-Portaba ... _c_35.html

- Still gotta cypher the initial parts to make the cold-pipe. I'll end-up using CRS for that. V-band clamps to connect two, what 2.5" into a 4". 90* ELL along the way, to turn into the secondary.
- Still gotta cypher the initial parts for the exhaust down-pipe. I'm thinking i should be able to use CRS and have it so the two primarys WYE into each other under the secondary. I'm hoping I can have it so it ties right into the current existing 4" downpipe at the HT3Bs outlet.
- For supporting the primarys, I've got a notion I can tie the two together using a plate between the two compressor housings, using their bolts to fasten things together. From there, run a brace to the engine.
- Oil supply and drains ought not be too big a deal.
- I've not given a whole lot of thought about how I'm gonna feed air to the mess. More fat pipe from the two primarys, down and into the stock-Pot?


SS Exhaust Manifold. 1" divided SS T3 spacer.

[ellis93]

Lordy......you can't hide money,or the fact your about to burn up a rather large stack of it lol

I'm watching this tread with great anticipation to see the outcome.

[BC847]

LOL! I'm spending my kids inheritance. Stupid 3" (OD) 14 gauge 304 SS tubing is a PITA to locate!

[BC847]

and the lever hit part of the housing, so it didn't open all the way either.

I've located a spacer-plate for the waste-gate cover-plate. That will allow the gate to open a little more.