Thread: All Years Triple "B's" Garage
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Old 04/12/2017, 09:59 AM   #69
robert campbell
My Car Details
 

Location: Bremerton Washington
Joined: Apr 07
Posts: 3,976

My Garage
Look at what wandered into Rob’s shop! This is a Superformance A/C Cobra that is built in South Africa. Superformance is the premier builder of A/C Cobra kits and the car is faithful to the dimensions of the original. They are so nice that Carroll Shelby has allowed them to be licensed under the Shelby name. Not sure what that means, but they reek of quality. The come as a complete wired, painted, and assembled rolling chassis with new owner to provide the engine and transmission only. I have known of this company for many years. Below is a link to their site and the tour of the “factory” page will support the reason for the quality.

http://www.superformance.com/default.aspx

This car is powered by an older Ford Crate 351 Windsor stroked to 392 cubic inches. Backed by a TKO 5 speed it is a nice package. This is kinda why it ended up in my shop. It was shipped to the Hampton’s in New York and a local facility installed the engine and tranny and got it on the road. The new owner purchased it with about 1,500k miles on it and lives near my shop.

The new owner complained of it being a bit sluggish, hard starting, and running rich. Top of the carb was black and sooty on both the primary’s and secondary’s. I baselined the settings on the carb, vacuum signal, and timing. Fortunately, it is similar to my new 351 stroked to 460 Crate Motor in Val’s car. The timing marks are etched into a chrome damper and very hard to see. I put a timing tape on my engine that is very easy to see. And there are many grids around it for different types of tuning or valve adjustment. Short story long (hey its rob) the initial installer had completely missed the timing marks or the original owner or someone in New York moved it. The engine was set at about 5 degrees BTDC. The MSD dizzy was set up with the proper short curve for the centrifugal advance at around 15 degrees total at about 3,000 rpm. The engine at 3,000 rpm or all in struggled to reach 20 degrees of total advance. What any easy fix. Spun her forward to 14 degrees and then to 18 degrees initial and now have around 34 degrees total just like my motor. Whoooo boy did I wake up a beast!! I took this car for a short drive and it is a lethal weapon. It is rated at 450 HP which is very close to what the original 427 A/C Cobra was rated at.

The original installer also improperly installed the dual return spring mechanism and the Superformance top cabin throttle assembly was miss-adjusted. This caused the carb to not completely shut when hot. Someone prior to the new owner had even installed a “cheesy” bracket under the dash and installed a spring to try and assist in closing the throttle to hot idle rpm via the gas pedal. A simple adjustment coupled with the properly installed return spring setup cured all of this. Hate to say it but the initial installer was not very talented in the setup of the engine.

Dialed in his electric choke and this car starts first time and runs like a top now! Owner is very happy with his new car!! It is a hoot to drive but a bit awkward with the left of center pedal location under the dash. They need some getting used to

Rob







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