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Anyone tried a twinscroll turbo on a 20vt
#1333868
11/04/2012 21:27
11/04/2012 21:27
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orridge1990
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orridge1990
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Just gauging interest as I know some of the twinscroll turbos spool really quick. I was thinking something like a td05 16g as I can get my hands on one
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Re: Anyone tried a twinscroll turbo on a 20vt
[Re: ]
#1333923
11/04/2012 22:52
11/04/2012 22:52
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orridge1990
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orridge1990
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I know you can't use twin scroll on a 5 cylinder but what of you just used a normal manifold
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Re: Anyone tried a twinscroll turbo on a 20vt
[Re: ]
#1333970
12/04/2012 03:58
12/04/2012 03:58
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Joined: Dec 2005
Posts: 1,895 New Zealand
Saint
My life on the forum
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My life on the forum
Joined: Dec 2005
Posts: 1,895
New Zealand
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I know you can't use twin scroll on a 5 cylinder but what of you just used a normal manifold you would lose all the benefit on an open manifold, Strictly speaking I assume you mean divided rather than twinscroll but I won't get caught up on that A divided (commonly called twinscroll on the www) works by dividing the cylinders as to limit the interference of exhaust gases from one cylinder with another cylinder which is near it is firing sequence, ie a 1,3,4,2 firing order 4 cylinder, you would link 1 and 4 together and 3 and 2. With a 5 cylinder there is no split. if you ran a divided turbo on an open manifold you lose the ability to keep the exhaust gases seperate till the turbine (ie they all get together in the collector so may as well run an open manifold), if you have a divided manifold say on a 16v as above 1&4 and 3&2 to a open turbine housing you lose the benefit as well. JTM runs a evo TS turbo on his 16vt and tigart make a divided 16vt manifold, on the 20vt it's not a realistic solution A 6 cylinder is the ideal configuration for divided turbos Real twinscroll has different volute dimensions on the turbine scroll so as I say 99% of the aftermarket offerings are divided
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Re: Anyone tried a twinscroll turbo on a 20vt
[Re: ]
#1334087
12/04/2012 15:54
12/04/2012 15:54
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Nobby
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Nobby
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Whoooa thats mental. But its obviously not worked that well though as its currently perched in the corner of someones office...
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Re: Anyone tried a twinscroll turbo on a 20vt
[Re: ]
#1334115
12/04/2012 18:36
12/04/2012 18:36
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1NRO
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1NRO
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Here's a challenge! Make a divided manifold for a five cylinder by splitting one of the cylinders to be exhausted with two pipes, 2.5 cylinders to either side of the divided turbo A turbo per cylinder wouldn't be much good, there'd be a lot of free-wheeling of the turbine between exhaust cycles. Speeding it up and down would be bad for efficiency. People do some daft things
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Re: Anyone tried a twinscroll turbo on a 20vt
[Re: ]
#1334128
12/04/2012 20:04
12/04/2012 20:04
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rmouthaan
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rmouthaan
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And if you are really bored and love the challenge, then weld up the splitter area(exhaust side ofcourse). Reface it, port the welds up nicely, and use 5 smaller pipes per divided section. Et voila, twin scroll for the 5 pot .
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Re: Anyone tried a twinscroll turbo on a 20vt
[Re: Nigel]
#1334189
12/04/2012 22:08
12/04/2012 22:08
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tricky
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tricky
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[quote=Nigel [/quote] Thats well dodgy ! Have you seen this ? Click
Last edited by tricky; 12/04/2012 22:08.
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Re: Anyone tried a twinscroll turbo on a 20vt
[Re: ]
#1334206
12/04/2012 23:09
12/04/2012 23:09
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johnnybravoturbo
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johnnybravoturbo
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This would only be advantageous for people wanting next to no lag. Not great for rev duration and after 5k they cause more restrictions hence why very little top end power is made.
So far anyways.
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Re: Anyone tried a twinscroll turbo on a 20vt
[Re: ]
#1334396
13/04/2012 20:07
13/04/2012 20:07
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1NRO
Unregistered
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1NRO
Unregistered
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And if you are really bored and love the challenge, then weld up the splitter area(exhaust side ofcourse). Reface it, port the welds up nicely, and use 5 smaller pipes per divided section. Et voila, twin scroll for the 5 pot . That'd take some making Remco! two collectors with five inlets on each, ten runners all to route round each other and a cylinder head to fight on with too. When will you have it finished A twin scroll turbo isn't really about getting them to spool sooner, at least in my mind, little or no difference between them and a single volute. One (of quite a few increasingly complex benifits) difference I see is in the lack of influence other cylinders are having on the cylinder that is trying to exhaust just after combustion.
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Re: Anyone tried a twinscroll turbo on a 20vt
[Re: ]
#1334518
14/04/2012 11:40
14/04/2012 11:40
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rmouthaan
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rmouthaan
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Would indeed be quite nice to make, but i am not that bored yet, or would you like to order one .
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Re: Anyone tried a twinscroll turbo on a 20vt
[Re: ]
#1334568
14/04/2012 17:15
14/04/2012 17:15
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1NRO
Unregistered
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1NRO
Unregistered
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No 5 cyl's for me mate, maybe someone will fancy trying something a bit different though with all the people that like that engine on here....
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Re: Anyone tried a twinscroll turbo on a 20vt
[Re: ]
#1335092
16/04/2012 12:29
16/04/2012 12:29
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rmouthaan
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rmouthaan
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I doubt that, but who knows. 20vt does just fine without all the hassle.
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