Out with the old...in with the new...Britain's Racecar Development, Subaru Engine, Lotus Suspension! Time to go racing! |
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Out with the old...in with the new...Britain's Racecar Development, Subaru Engine, Lotus Suspension! Time to go racing! |
Britain Smith |
Dec 6 2010, 11:33 AM
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#1
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Nano Member Group: Members Posts: 2,354 Joined: 27-February 03 From: Hillsboro, OR Member No.: 364 |
For those who don't know me or the car, I have a '74 914 that is a dedicated AX car. It previously had a high compression 2.7 6-cylinder motor and made 205hp/205ft-lbs at the wheels. This set-up wasn't all that bad considering that it won the 2008 and 2009 914 Shootout events, however the quest for more speed continues.
Here is the car in the 2010 season trim. (IMG:http://www.914world.com/bbs2/uploads_offsite/dragracevws.com-364-1291656786.1.jpg) I have recently sold the 2.7L 6-cylinder engine and all the remaining 914/6 conversion parts. I have used the proceeds to fund the conversion to Subaru power. Now most would say that a Subaru conversion can be done on a budget, however I have found that the money goes flying out the window when doing something like this. Regarding the engine...logical choice would be to go for a EJ257 2.5L USDM STi engine. However, all the SCCA rules for AX are built around displacement which in turn dictates the minimum weight. Therefore, I have gone with a JDM STi version8 Spec-C engine which is a 2.0L, twin-scroll, hand ported/polished, 8500rpm animal. I will get slightly less hp and torque numbers than the 2.5L, but save 150lbs of weight. |
Britain Smith |
Dec 10 2010, 02:14 PM
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#2
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Nano Member Group: Members Posts: 2,354 Joined: 27-February 03 From: Hillsboro, OR Member No.: 364 |
Few updates. Took a few days off work to make some progress before the holiday season gets underway. I also got a lot of parts in and I couldn't wait to get them mounted.
First off was to mount the pair of Turbosmart wastegates and finish the exhaust plumbing. Here you can see the general location of all the components. (IMG:http://www.914world.com/bbs2/uploads_offsite/sphotos.ak.fbcdn.net-364-1292012081.1.jpg) Both wastegates will dump back into the exhaust stream so that I can control the output noise levels due to sound restrictions at some venues. Both wastegate dumps are 1.5" and then merge into 1.75" before being dumped into the exhaust. After several hours of fab work with a "metal master" buddy of mine, it was all completed. Just have to get it professionally tig welded to call it done. (IMG:http://www.914world.com/bbs2/uploads_offsite/sphotos.ak.fbcdn.net-364-1292012083.2.jpg) (IMG:http://www.914world.com/bbs2/uploads_offsite/sphotos.ak.fbcdn.net-364-1292012083.3.jpg) Here it is mounted in the car to ensure that everything clears and fits in its respective location. (IMG:http://www.914world.com/bbs2/uploads_offsite/sphotos.ak.fbcdn.net-364-1292012084.4.jpg) The location of the turbo and the mess of the header and exhaust plumbing has made it impossible to run the stock shifter bar. Therefore, I have adapted parts of a cable shift set-up to handle the shifted duties. If you remember, I only have 2 gears in my transmission and therefore only need to shift forward and back...pretty simple. Here is the transmission side. (IMG:http://www.914world.com/bbs2/uploads_offsite/sphotos.ak.fbcdn.net-364-1292012084.5.jpg) |
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