Fitting a supercharger
So far I must have worked on it for 100 hours. After all, the welder’s bill
has already reached 11 hours (at AUD$50 an hour) and I’ve spent easily ten times
as much time on it as he has. In fact, having previously plonked a turbo late
model engine into an early model chassis, I’d say this project isn’t far away in
time and complexity.
And I thought it was going to be so easy…
The project is forced aspiration on my ’99 Toyota Prius. The Prius is a
hybrid petrol/electric car – but that unique driveline has absolutely nothing to
do with the time that I have so far spent. In fact, doing the same job on a
Toyota Echo would involve all of the same steps. (The Echo has an engine whose
bottom half is pretty well identical to the Prius.)
For forced induction I’d initially thought ‘turbo’, and in fact had found
exactly the right turbo going on eBay. A ball-bearing Garret GT12, it was new
but the private seller was quitting it after changing projects. Unfortunately,
he is also apparently one of those people who puts up eBay items with a low
starting price, then withdraws the auction at the last moment when the price
hasn’t risen high enough. And so wastes a lot of people’s time.
My thoughts then turned to supercharging. In the case of the Prius,
supercharging has distinct possible advantages – but then so too does
turbocharging! Given that no one in the world has forced aspirated a Prius, the
approach which would work best is problematic. But if I could pick up a small,
cheap blower, well…
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Julian Edgar, 50, has been writing about car modification and automotive technology for nearly 25 years. He has owned cars with two, three, four, five, six and eight cylinders; single turbo, twin turbo, supercharged, diesel and hybrid electric drivelines. He lists his transport interests as turbocharging, aerodynamics, suspension design and human-powered vehicles.
