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  1. moparmark

    Boost question

    or my 2 cents, petrol engines use a throttle butterfly, and any boost developed by the turbo is controlled by this butterfly. As the engine in the wrx only requires a minimal amount of air flow to free rev to 4000rpm the inlet tract after the butterfly will be in a state of vacuum still, and...
  2. moparmark

    Brake setup??

    willeng, thanks for that. given that your pedal assembly is of the 6:1 ratio type you probably have already gone as small in the master as practical for any given front disc setup. without the booster is the effort required to lock the front brakes considered excessive? is the car used for track...
  3. moparmark

    Brake setup??

    willeng, i have a similar setup on my car but dont use a booster. the master cylinder size on these setups usualy vary from 5/8inch upto 1inch. you may want to check what size is fitted as if they're the 1 inch ones pedal effort is a lot higher than if you us say a 3/4 or 5/8. the best...
  4. moparmark

    What are spherilastic bushes?

    vince, i take it you are refering to a pivoting joint more commonly known as a rose joint? if so it comprises a steel sphere inside an outer shell with a threaded adjuster attatched to the outer shell and the internal sphere has a bolt hole through it for mounting. as used on most race cars and...

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