Triples & Header Build on Big Angry

Is there any worry about the size of that tubing? Just seems like it would take a lot of volume to fill that header
 
97rada said:
Is there any worry about the size of that tubing? Just seems like it would take a lot of volume to fill that header
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I was a tually thinking he same thing. He does turn lots of rpm though. It's still a 5.9 as well.

Knowing Rich though, he had to have thought this through first. We'll see soon I hope.
 
97rada said:
Is there any worry about the size of that tubing? Just seems like it would take a lot of volume to fill that header
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And here's the answer:



cumminalong said:
The primaries are 1.75 OD x .110 wall, so 1.53 inside diameter. These go into the collectors which are 1.75 OD in and 2.25 OD out. Why the difference in size?....flow to all 3 turbos when the gates open.

At full song I have to bypass ~70% of the exhaust flow around the secondary turbine in order to not choke the exhaust flow. To do this, I'd need a single 70mm wastegate, that would be a 2.75" gate. But I'm using dual 50mm gates (2" gate)to achieve the same total area as a single 70, but still keeping the volutes totally divided.

Now, if I went from 1.75 piping straight to 2" piping without a counting for the flow in the upper RPM's, which is where I want the power, as soon as the gates opened the secondary would fall on its face as the easiest passage would be out the gates to the primaries.

Using the larger piping and then splitting to the smaller piping allows the volume to remain high and as the pressure comes up to divert to the gates but still maintain enough velocity to the secondary to keep it from surging and making the gates open and close.

Will it slow initial response on the bottom end with the larger volume? Yes, marginally. But as long as the gates are closed, as in when I'm spooling the truck, all that exhaust flow is still going directly to the secondary turbine by way of two 2" OD pipes. Makes a small initial delay, but once that volume is occupied, it's pretty negligible. I also run pretty high EGT's which causes the exhaust volume to be high as well.....if you know gas laws, you know the effect of heat on a gas. This is how you figure out expansion ratios for turbine sizing.

The goal of this setup is high RPM power, not low RPM torque.
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I think he'll find that for real good high rpm power sizing the secondary turbine so that you need to bypass 70% of the exhaust flow isn't the way to go.
 
Agreed!! Wow


cumminalong said:
Well, I hadn't planned on working on the turbos today. All I wanted to get done was clean the shop up.....looked like a bomb went off in there. But, got in a grove and.......

Here's my ghetto fabulous purge kit. Just an old regulator, a ball valve, a couple fittings and some hose....





Hooked up to my spare argon tank....



And why do we purge stainless? This is a weld without purging.....



This is a weld with the pipe purged so the argon protects the inside of the weld....













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Update!!

cumminalong said:
Got outta class, went home and changed, knocked some stuff out.....

Got Big Angry back in the shop....



Ripped everything off the mock-up motor....





Got everything set to go on in the engine bay...





Slapped this sucker together like some crazy redneck actually meant it to fit in there....



[URL=http://s288.photobucket.com/user/Cumminalong/media/1CF29CDE-F1E9-420A-B068-F3900B3790C1.jpg.html][/URL]













Plenty of clearance around the secondary compressor....



Clearance for days with the hood down....



It's lookin' sexy right now, but it's gonna look a whole lot sexier with two more S467's sitting in there....



I'll rip this all back apart tomorrow and get started on the welding. The welding is gonna take me a few days to finish....

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I like the little placement for the IAT sensor.

sorry for the dumb question, but the coiled copper line is for the Exh drive pressure gauge so that you don't burn it up with heat? or more for vibration/pulse?
 
Happy Valentines!

cumminalong said:
Getting a bit more done today.....





Need to let these cool a bit and then I'll fit them back up and start doing the collectors.....those are a PITA!
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cumminalong said:
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cumminalong said:
Everything is fitting up real well after the welding....



The first of the primary tubes is home permanently....

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cumminalong said:
Second primary is in. There is about a 1/4" section that I just can't get with the TIG so I had to pop it with the TIG. Not as clean as I'd like, but it's in there.....



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cumminalong said:
And here is the end result.....



Still gotta do the other one, but that'll have to wait until next week....
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Did he ever get this finished and running, was looking forward to it.
 
jasonc said:
Did he ever get this finished and running, was looking forward to it.
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He's been really tied up with school. He is studying some hard stuff evidently and devotes most of his time to that right now.

He also bought a brand new mustang and has been playing with that a bit too. LOL

I Hope he gets it finished soon too though. I really want to see what it's capable off.
 
He's been messing with this most on his off time.


cumminalong said:
Naaah, I just haven't screwed with it.

I had this week off, but I needed to unwind and the last thing I wanted to do was screw with the truck. Had too much stuff to get done around the house to mess with it.

Between the wife being out of town and Tom and his wife having the baby, I had some time to get caught up on some projects around the house that I've been neglecting.

And, I may have been messing with the car too......:hehe:











https://www.youtube.com/watch?v=xFK__-YsTzc
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I forgot... He did take the truck out with his old single turbo setup a few weeks ago and make a few test passes. (NOT the new triples)

6.57@114 on this soft launch pass. ( i think it's been 6.20-6.30 on this single turbo setup before)



[ame="http://www.youtube.com/watch?v=aQNZf6FTwJs"]http://www.youtube.com/watch?v=aQNZf6FTwJs[/ame]



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