Pin Retention

Discussion in 'PSI Superchargers Tech Questions' started by P/M Truck, Jun 6, 2004.

  1. P/M Truck

    P/M Truck New Member

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    Curious to know what is being used these days for piston pin retention. Double spiro's, or buttons? Advantages or disadvantages of either?
     
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  2. Alkydrag

    Alkydrag Sr. Dragster

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    Double spiros are ok. Wire locks are a much better deal. The harder they go in means the less likely they will come out. Use buttons if you plan on doing regular maintenance (I.E. engine teardowns between rounds).
     
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  3. Mike Canter

    Mike Canter Top Dragster
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    After fighting spirals installation and removaland then have one or two always come loose made me change to buttons. Buttons are easy and reliable.
     
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  4. P/M Truck

    P/M Truck New Member

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    Mike, what style & material button do you run?
     
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