
08-23-2004, 10:06 PM
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Senior Club Cobra Member
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Join Date: Jul 2000
Location: Chilliwack,BC,
BC
Cobra Make, Engine: F5 Roadster
Posts: 1,422
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Not Ranked
Heat
Max,
Sorry to hear your problem.
On blown motors you NEED the best valves, sodium filled preferred. Also the valve springs should be 20% heavier and checked for spring pressure regularly. A weak valvespring is THE #1 cause of the intake explosions,be it nitros or boost. It is a good idea to change valve springs every season.
On street motors I would also stick with a custom ground hydraulic cam with only around .570 lift to keep breakage down ,stay away from the solid rollers.
Hope you get her fixed quickly.
Perry. 
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