Reply to "Girdle"

George PAdmin.

I know drag racers who run very high rpm with two bolt mains, but road racing puts a lot more strain on a motor than drag racing. It takes a lot of abuse to make the two bolt caps walk in their registers when they are tightened properly, but I like to build-in a margin of safety (some people call that over-building). A naturally aspirated motor rev-limited at 6000 rpm doesn't need the girdle. If the rev-limit is 7000 rpm or higher, and you planned to run in the higher rpm range full time (not just a blast on a freeway on-ramp), then I would install the girdle.

The part of the girdle that bends around the oil pump will interfere with the oil pan. What I've done in the past is remove that part of the girdle with a hack saw. The alternative is to bang the pan out with a ball peen hammer and hope nobody looks under your car.

-G

4/27/1012:26 PM

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