Rise of the Phoenix
Discussion
Well it's been more than a while since I updated this thread, plenty has gon on behind the scenes with the build pretty much planned out.
Wortec have been doing the TT construction, all CAD so very easily repeatable.
Pretty happy with the results
A big part of the build brief was accessibility, we got that covered as all this kit can come on and off with the engine in place, just as importantly, the plugs and leads are not heat compromised.
Once the hot side of the pipe work is ceramic coated temps should be nicely under control, only dilemma is what colour to coat them.
Wortec have been doing the TT construction, all CAD so very easily repeatable.
Pretty happy with the results
A big part of the build brief was accessibility, we got that covered as all this kit can come on and off with the engine in place, just as importantly, the plugs and leads are not heat compromised.
Once the hot side of the pipe work is ceramic coated temps should be nicely under control, only dilemma is what colour to coat them.
Edited by Xpuffin on Wednesday 25th November 21:33
Wow, spaghetti primaries! I don't know much (/anything) about turbo header design, but is there a significant performance benefit in not merging earlier/before the turbo flange? Most turbo headers I've seen don't care much for equal lengths or long lengths. Clearly some effort went in there
Are there plans to sell a kit?
Are there plans to sell a kit?
Mud_ said:
Wow, spaghetti primaries! I don't know much (/anything) about turbo header design, but is there a significant performance benefit in not merging earlier/before the turbo flange? Most turbo headers I've seen don't care much for equal lengths or long lengths. Clearly some effort went in there
Are there plans to sell a kit?
Maybe going for long primaries to try and boost some low down torque before things get all boosty? Equally though, I know absolutely nothing about turbo header design... Which sort of implies I know something about NA header design, which, really, I don't either! Are there plans to sell a kit?
Great to see some Monaro porn
Mud_ said:
Wow, spaghetti primaries! I don't know much (/anything) about turbo header design, but is there a significant performance benefit in not merging earlier/before the turbo flange? Most turbo headers I've seen don't care much for equal lengths or long lengths. Clearly some effort went in there
Are there plans to sell a kit?
Due to the unique firing order of the LS range, creating primaries with the swept volume of a cylinder means that as the bank "double taps" the turbo each pulse will enter the turbo separately rather than overlap and thus cause heat and back pressure. Particularly noticeable at the higher Rpms.Are there plans to sell a kit?
Xpuffin said:
Due to the unique firing order of the LS range, creating primaries with the swept volume of a cylinder means that as the bank "double taps" the turbo each pulse will enter the turbo separately rather than overlap and thus cause heat and back pressure. Particularly noticeable at the higher Rpms.
Makes sense, proper job 
Mud_ said:
Xpuffin said:
Due to the unique firing order of the LS range, creating primaries with the swept volume of a cylinder means that as the bank "double taps" the turbo each pulse will enter the turbo separately rather than overlap and thus cause heat and back pressure. Particularly noticeable at the higher Rpms.
Makes sense, proper job looks like a nice piece of Car Art to me. Sod Damien Hurst
preciousmetal said:
Sod Damien Hurst
Is he the one that said "Put half a tiger in your tank" ???If I'm reading right, then with this, you're looking for the opposite of what an expansion chamber does on a 2 stroke - ie making the primaries of a length where any exhaust pulse is unimpeded by those which come before, or after.
preciousmetal said:
Mud_ said:
Xpuffin said:
Due to the unique firing order of the LS range, creating primaries with the swept volume of a cylinder means that as the bank "double taps" the turbo each pulse will enter the turbo separately rather than overlap and thus cause heat and back pressure. Particularly noticeable at the higher Rpms.
Makes sense, proper job looks like a nice piece of Car Art to me. Sod Damien Hurst
Xpuffin said:
Mud_ said:
Wow, spaghetti primaries! I don't know much (/anything) about turbo header design, but is there a significant performance benefit in not merging earlier/before the turbo flange? Most turbo headers I've seen don't care much for equal lengths or long lengths. Clearly some effort went in there
Are there plans to sell a kit?
Due to the unique firing order of the LS range, creating primaries with the swept volume of a cylinder means that as the bank "double taps" the turbo each pulse will enter the turbo separately rather than overlap and thus cause heat and back pressure. Particularly noticeable at the higher Rpms.Are there plans to sell a kit?
Xpuffin said:
Due to the unique firing order of the LS range, creating primaries with the swept volume of a cylinder means that as the bank "double taps" the turbo each pulse will enter the turbo separately rather than overlap and thus cause heat and back pressure. Particularly noticeable at the higher Rpms.
When it seems they've went to length....to retain length, how come they haven't retained division to the flange, to then use a divided scroll ?I'd definitely be making sure the weight of the turbos is well supported...as well as giving those manifolds some room to grow/shrink as they heat and cool.
With suitable turbo sizing, backpressure shouldnt be a concern. Even with truck manifolds on mine, mine barely exceeds 1:1 EGBP vs Manifold Pressure until lots of boost and rpm and even then it's only touching 1.2:1
I was amazed how good it was.
Nice to see it progressing. What are the square boxy pipe section bits for ?
And no wastegate provision ?
External waste gates, not plummed in as yet. Yes, heavily supported.
We are actually working from the benefit of the development done by the Henessy Venom team on this build with regard to fluid dynamics so I'm happy that whatever seems different is so for a very good reason.Turbos are GT3582s.
The triangular sections solved an access problem without compromising volume or gas speed.
We are actually working from the benefit of the development done by the Henessy Venom team on this build with regard to fluid dynamics so I'm happy that whatever seems different is so for a very good reason.Turbos are GT3582s.
The triangular sections solved an access problem without compromising volume or gas speed.
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