got a surge-slotted 0.7 A/R front housing with
a 68mm inducer and an 84mm exducer on the
billet compressor wheel. Its maximum power
rating is somewhere between 900 and 1000hp,
which is plenty for our needs.
We had a few comments on our second
Carnage video about the fact that I set the turbo
up with the oil feed pointing straight up, which is
the way that factory BA and BF Falcons are set
up. It seems that in the FG range the housing
is canted at around 20° to help with water
flow through the turbo, something that Garrett
calls ‘Thermal Siphoning’. This can reduce the
temperature in the centre housing by as much as
50°C, but to do this the water intake side of the
turbo must be positioned lower than the outlet on
the other side. If it’s the other way around it can
cause temperatures to spike and shorten the life
of the turbo. But straight up and down is fine too,
and because our turbo water feed pipes seem to
be BA/BF-style, we’ll stick with that.
On the intake side of the engine we found a
near-new FG Falcon turbo intake manifold on
eBay, complete with injectors and throttlebody.
At almost $600, it was probably a bit more than
we wanted to pay, but after dealing with the
old ‘dual-band’-style intake, and the possibility
of doing another engine swap, we wanted
something that was going to be easier to get on
and off the car. Rather than bolt it straight to thecar we dropped the intake off to Jason at Tunnel
Vision so he could drill it for a second set of
LPG injectors. Jason has been piecing together
everything we need for a vapour injection system
to support the power requirements. None of the
factory gear was up to the task, so he’s run twin
10mm high-pressure lines up to the new lock-off
valves and twin gas converters. From there the
converters will feed the LPG injectors, which look
a lot like old-style Bosch fuel injectors apart from
a couple of differences. Once it’s all together
the engine will look like an EFI petrol set-up to
most people. To control it all we’ll be using the
Haltech Elite 2500; it’s got the capabilities to
control two sets of injectors and work with the