Xr6 Twinturbo!

[MiKa]

Hey Pat, chuck up the pics of the VL...

[Dillz]

Hey mate I saw a twin turbo I6 out of a Ba the other day. Wierd setup but from what I could tell it had a custom plenum with twin throttle bodies and no cooler!

After seeing it I couldn't see any possible benifits (apart from the WTF! factor) at all for running a twin setup. This one didn't have any intake pipes to the turbos and I doubt you could fit any either, same as intercooling it as well it would be a hell of a task to do.

[XRDOSE]

where are the pics dillz???

Edited 10/03/09 05:15 AM by XRDOSE

[w84me]

awsome idea, 500kw with early boost. weapon!

[Superdan]

Thought I'd give this a bump and see if anything has progressed?

Has the thought of a bi-turbo ever come up? ie: a small'n and a bigg'n??

[senna_T]

Sequential turbos are pretty damn complex to set-up Dan, expecially if the car is not designed for it...

Nothing new on my front either unfortunately...

[Superdan]

Would a Bi-Turbo setup even be possible on this engine? I've been looking at pics of the boxers / V8's / V12's etc, where the turbo's are on either side, but would there even be room for such a device on the one side!?

Edited 21/04/09 01:11 PM by Superdan

[straughsberry]

I looked into a twin set-up for my impending build. It is a lot more expensive than a single unless you can get some fairly good sponsorship.

[mic]

I was told from a very reliable source, that twin turbos on these things would be more laggy than a single 1. and with an engine this size, spoolin up a large single is 2 easy.

[Ricky N]

Twin turbo’s do have their merits.

1) Space. Two 400hp turbos will have less girth than one 800hp turbo. (There is heaps of space in the Ford’s so not really an advantage in this instance)

2) Less volume for each exhaust pulse to pressurise and less heat loss so each turbo should spool faster. (A properly set up split pulse single turbo manifold and divided turbo housing has the same advantages)

3) Less chance of combustion chamber reversal. Because properly set up twin turbos do not have apposing cylinders firing together they are less likely to suffer from exhaust gas reversal into the combustion chamber. (A properly set up split pulse single turbo manifold and divided housing turbo has the same advantages)

4) You cannot get a single turbo big enough to support the power level you are after. (I don’t think there are too many people out there chasing 2500+hp)

5) Wank value. OMG! Check out my fully sick twin turbos.

Unless building sequential or compounding twin turbo systems I believe if the space is available a single split pulse turbo system will work best in most cases.

My above comments say “properly set up split pulse single turbo” because true split pulse systems have different requirements from the turbo choice and manifold design than a open merged collector manifold and open housing turbo. A true split pulse systems will keep all the exhaust gasses from both sides of the manifold separate. Usually by running two wastegates. One for each side of the manifold.

I could go further into this but it would be getting a bit off topic from the twin turbo’s.

If you are in the market for a split pulse manifold make sure you talk to someone with a bit of experience with these style of manifolds. An improperly set up split pulse system will have no advantage and can even be a restriction.

Twin’s vs Single.

I would still go single with an open merged collector manifold over the twin’s. I can’t see the twin’s having a noticeable advantage over a single on this style engine. Plus the extra cost.