Turbotoyotas "Twin-scroll" Mani NEW PICTS
02-08-2008, 12:01 PM
#123
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Originally Posted by SePaTc
Originally Posted by PlayinWithFire
to my knowledge the twin scroll manifold takes advantage of the firing order of the different cylinders. For example, if the firing order is 1-3-4-2 then the 1 and 3 runners and 4 and 2 runners would be paired together for each of the halves of the divided turbine housing. This decreases the turbulence at the point where the runners meet and help for a quicker spool (less obstruction, the quicker stuff can go through)
please correct me if I am wrong as I am very new to this myself.
please correct me if I am wrong as I am very new to this myself.
if 1 and 3, 4 and 2 collected together, there would be more backpressure and turbulence.
follow:
1 fires first, then 3 fires fractions of a second after, if they both collected into the same runner, the gases from 1 would still be flowing thru the runner as 3's exhaust valves are opening.
if..... 1 fires, then 3 fires and dumps into a different runner, then by the time 4 fires, the gases from cyl 1 will be more evacuated. and same thing with the other cylinders.
anyone else?
02-08-2008, 01:35 PM
#126
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Originally Posted by TurboToyotas
FINALLY!!!!
Some finished picts.
The install will be done tomorrow night, just wanted to show some picts of the finished manifold.
Pictures do not do the polished manifolds justice....belongs on my dining room table as the center piece.
Enjoy!!
Some finished picts.
The install will be done tomorrow night, just wanted to show some picts of the finished manifold.
Pictures do not do the polished manifolds justice....belongs on my dining room table as the center piece.
Enjoy!!
02-08-2008, 03:20 PM
#127
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Originally Posted by SePaTc
whats the diameter of the runners? they look really wide... although i guess they might be thicker. i'm just thinking you might lose a little pressure and have slower spool up. idk though.
02-08-2008, 03:52 PM
#128
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Originally Posted by SHDWtC
Originally Posted by SePaTc
whats the diameter of the runners? they look really wide... although i guess they might be thicker. i'm just thinking you might lose a little pressure and have slower spool up. idk though.
so do we actually have the internal diameter of the runners measured and know that its indeed narrower, or is that just a guess or something you heard.
either way, i don't care. i'm quite confident that this manifold will have better performance characteristsis than a log manifold.
the only thing i'm not sure about is whether you really need 2 wastegates, and if the wastegate positions are optimal--they appear to evacuate predominantly from one runner.
02-08-2008, 07:49 PM
#129
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You'd have to see how the runners are devided in the flange to deterimine how optimal their placement is. And that polished one looks way thicker then the non-polished one does, as does all Todd's mani's after they are coated.
02-08-2008, 08:13 PM
#130
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Originally Posted by Mr_Meaty
You'd have to see how the runners are devided in the flange to deterimine how optimal their placement is. And that polished one looks way thicker then the non-polished one does, as does all Todd's mani's after they are coated.
and as i said before, imo its clearly the best designed manifold out there for the tc so far.
02-09-2008, 01:01 PM
#131
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Originally Posted by SePaTc
Originally Posted by SHDWtC
Originally Posted by SePaTc
whats the diameter of the runners? they look really wide... although i guess they might be thicker. i'm just thinking you might lose a little pressure and have slower spool up. idk though.
so do we actually have the internal diameter of the runners measured and know that its indeed narrower, or is that just a guess or something you heard.
either way, i don't care. i'm quite confident that this manifold will have better performance characteristsis than a log manifold.
the only thing i'm not sure about is whether you really need 2 wastegates, and if the wastegate positions are optimal--they appear to evacuate predominantly from one runner.
02-10-2008, 11:12 PM
#133
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Originally Posted by SePaTc
the only thing i'm not sure about is whether you really need 2 wastegates, and if the wastegate positions are optimal--they appear to evacuate predominantly from one runner.
02-11-2008, 03:34 AM
#134
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so do we actually have the internal diameter of the runners measured and know that its indeed narrower, or is that just a guess or something you heard.
All the new manifolds are made with a smaller inner diameter than the older style
Increase in velocity without effecting flow
UPDATED INSTALLED PICTS:
Enjoy !
Regards-
Todd
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