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restoring a factory 90's imsa gtu racecar

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restoring a factory 90's imsa gtu racecar

Old 11-11-16, 11:07 AM
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Looks awesome. Great job with build. Keep up the solid work. Btw, if you ever need a driver.......
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Old 11-11-16, 01:45 PM
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Luckily the previous owner had spare bodywork. We acquired the nose and tail section for a reasonable price and he found a deal on the shipping.
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Old 11-11-16, 02:19 PM
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We were able to contact the original builder of the car. Chassis Dynamics built many of the top IMSA chassis in the 80's and 90's and made this car in 1990. They are still around and amazingly still had the blueprints of the chassis. They built us a front clip which we will attach at a local race car shop.
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Old 11-11-16, 02:23 PM
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Old 11-11-16, 03:09 PM
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The next step was to take the car to Specialty Engineering in Delta , BC. They are a race shop specializing in roadracing but able to work on anything you can dream up. Their hand built in house tube frame chassis have won several SCCA National championships. While the car was there I had them clean up the rear suspension , add the electric power steering, and set the bump steer. The crashbox was set at a slight angle to increase downforce.
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Old 11-11-16, 03:18 PM
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Specialty Engineering is a clean bright and all in one place. They can handle machining, engines, suspension design and more. They have a web site showing some amazing builds. In regards to the pick up points of the suspension 1/16 of an inch variance was considered way too much!
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Old 11-11-16, 03:53 PM
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Once the car was back home we stripped it and will repaint the front and rear chassis a period correct factory mazda blue
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Old 11-11-16, 04:00 PM
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Specialty engineering also sourced a sheet of aircraft aluminum to replace the beat up steel floor. It will be lighter and stronger. We used the old floor as a pattern for the 200 plus rivets.
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Old 11-11-16, 04:08 PM
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Old 11-11-16, 04:17 PM
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The next step was to fabricate a lot of little things. We built a header from 321 ss . Ideal length 9-14 inches for pp engines. Both radiator were made with identical ends for easy replacement. Muffler mounts , throttle cable and numerous other items were fabricated.
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Old 11-11-16, 04:23 PM
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After a year the car is back to a new home for final assembly. Note the front nose tilts for easy loading .
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Old 11-11-16, 04:26 PM
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Shiny new floor
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Old 11-11-16, 04:30 PM
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760 hp 3 rotor turbo stock chassis vs 330 hp tube frame . It will be interesting to see which is faster!
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Old 11-11-16, 04:34 PM
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Fuel cell, air jacks and brake lines installed.
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Old 11-11-16, 04:38 PM
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Oil , fuel and water hoses installed and fabricated.
Shifter installed.
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Old 11-11-16, 04:43 PM
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Old 11-11-16, 06:53 PM
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Hi Wouter,

Nice work here. I am curious about the side mounted alternator on this car. I've seen many kits that locate the alternator on the spark plug side, however there would be interference with the plumbing from the dry sump cover. Do you have any photos of your bracket that you would be willing to share?

Regards,

Guy
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Old 11-11-16, 08:06 PM
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Here you go
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Old 11-11-16, 08:10 PM
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Abs pump and ecu. Mounted to pedal assembly so when it activated I should feel it.
Electronics for power steering mounted perfectly on the fabricated aluminum plate that holds the ps motor. This ps kit is from mk2 mania and uses parts from a production car .
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Old 11-12-16, 07:43 AM
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Awesome build
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Old 11-12-16, 11:24 AM
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+1 awesome car!
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Old 11-12-16, 06:02 PM
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Very cool build. I like seeing the way race cars are put together.

Is there a tunnel that goes over the driveshaft?
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Old 11-15-16, 11:01 PM
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Oil temp housing
Carbon fibre covers and scattershield installed
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Old 11-15-16, 11:06 PM
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Slide valve injection sealed with hylomar.
Custom heat blanket covers 321 ss header. A second piece covers the flex pipe .
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Old 11-15-16, 11:22 PM
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Prepped Porsche 930 cv with custom axles . Axles, cages, stars and housing all micropolished for low drag. AN fasteners and neo synthetic cv grease. Neo is used by top race teams and was developed with Benneton during the 80s when f1 turbo engines were making over 1000 hp and previous cv grease was failing.
Messiest job ever. So glad it's done🎉
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