"Ask the Radical Factory"
The Radical Factory has teamed up with the Radical Sportscar Registry to give the Radical community direct access to the expertise at the factory to answer your questions.
Ask the Radical Factory Question #4 – Hello, I Have a new to me a 2009 sr3 (chassis #438). Two questions I have are where about in the setting range for the dampers is a good place to start for a high speed fairly smooth track (CTMP (Mosport) in Canada)? The dampers are the intrax racing with the single adjustment knob at the top car has medium Nik link bars front and rear. Second what set up difference change between the Michelin and Hankook radical tires? The car came with a set of each, and I am free to run either in the club racing that I am doing. cheers, Corey Bradburn
March 18, 2023
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Hi Corey, as you know the optimal suspension setup is dependent on driver style, weather, and track conditions. The latest Radical SR3 Owner’s Manual (SR3
Ask the Factory Question #3 – Buongiorno, I am writing from Italy and am the owner of two radicals. I would like to have information on the construction date of the SR4 031 and Prosport 066 chassis. Grazie, Giuseppe Bellini
March 6, 2023
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Hi Giuseppe, your SR4 (chassis number 31) was built in December 2004 and is considered a 2005 model, and your Prosport (Chassis number 66) was
Ask The Factory Question # 2 – I have a 2017 RXC Spyder with a Ford EcoBoost twin turbo engine and noticed that the water pump is starting to go out. Can the water pump be replaced without pulling the motor and drive line? Jeff P.
February 17, 2023
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Hi Jeff, yes, the water pump on your car can be changed without removing the engine. Your local dealer will be able to supply you
Ask the Factory Q#1 – I am writing to you from Japan. I work in automotive maintenance. I am working on a Radical SR4 engine that will not start. The fuel pump and ignition coil are not working either. I want to check if the engine control module is working properly. Can I have a wiring diagram for the Radical SR4 (Chassis No: SR4 00082j) Best regards, Atsushi K.
February 1, 2023
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A: Hi Atsushi, attached is a copy of the Wiring diagram that will help you with your car. The SR4 you are working on shares