Promotive Engineering

Porsche Motorsport Preparation Brisbane, ETS Fuel QLD

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More GT2

February 5, 2017 by Promotive Leave a Comment

The GT2 has been moving ahead at a glacial pace!  There is now a renewed push to get this car finished and on the track, so I dusted the cobwebs off the chassis and finished off the rear wing and engine mounts and a lot of those fiddly jobs that take so much time yet are never seen.

I decided to keep the turbos in a reasonably standard position but just make the headers so there was enough room for the external wastegates.  It is a tight squeeze!  There is just enough room so they don’t become intimate with the massive wheels when at full bump travel.    It is simple and more efficient compared to the standard Turbo pipe work.  The intercoolers have an o-ring seal onto the larger GT2 drive by wire throttle body to make mounting simple and the location is perfect to take advantage of the big roof mounted air scoop.

I am not looking to the next jobs of fabricating the fiddly firewall infill panels, replacing the firewall template with a carbon one with rear window, and then trying to work out how to mount the widened rear body work.  It will be exciting to see it looking like a car again though!

Filed Under: Porsche Tagged With: Fabrication, GT2, Porsche race preparation

GT2 v2.0…

July 6, 2015 by Promotive Leave a Comment

The GT2 is progressing.  Slowly.  It looks like it is still only half a car, but it will be twice the car it was…

GT2 half

Unfortunately, the panels that we ordered were the worst quality I have come across in twenty years so a considerable amount of time has had to be spent on getting them to fit.  I really want to make the rear panels clip off in one piece but I am behind schedule already so I cant deviate from the brief…  At least the front is mainly fitted up and I am just need to keep the CNC running to make all of the little brackets and smaller parts.

GT2 space frame

While the rear firewall and panels are not yet finally mounted, it is easier to do the plumbing and mount the suspension.  The rear links will be fitted in the next week so the new engine can be fitted and the turbo manifolds for the EFR turbos fabricated.  The intercooler will be fed by the massive air scoop that was used previously so that can be fitted at the same time.  The engine can be then dynoed and fitted…

GT2 front panels

There is still a few long days ahead before it looks like a car again!

 

 

 

Filed Under: Porsche Tagged With: Fabrication, GT2, Porsche race preparation

GT2 Update

April 4, 2015 by Promotive Leave a Comment

GT2 Shell side

The  The GT2 shell is back from the sandblasters!  I have finished all of the major fabrication at last.

It doesn’t look like much at the moment but after a splash of paint and the composite panels are bolted or bonded on, it might actually look like the Porsche it was.  Just a lot lighter, stiffer with better suspension geometry!

GT2 shell front

The new engine is going back together at the moment and should be on the dyno in the coming months.  As in its previous incarnation, the engine is controlled by a Motec with one of my lightweight tefzel looms which saves just over 60kg compared to the factory loom and all of the various ECUs!  This engine has some trick bits inside with a couple of Borg Warner turbos that I have found to be the performing turbos at the moment.  More on that later…

Interestingly (to me anyway!) the chemists at ETS Race Fuels in France have recommended ESR GC4 as the fuel that has the best burn characteristics to suit this engine spec.  It will be interesting to do another fuel comparison on the dyno.  The gains by switching to the right fuels so far have been nothing short of amazing!

I can’t wait!

 

Filed Under: ETS Fuel, Porsche Tagged With: Fabrication, GT2

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