ryanf117 Posted February 20, 2008 Report Posted February 20, 2008 so i started to get a knock took off the head it looked like the head and pistions where sand blasted the pistons where only 2 weeks old and the wrispins were stuck in the pistons and the wrispin bearings where basicly gone what the hell happen ? any help Quote
IrideA250R Posted February 20, 2008 Report Posted February 20, 2008 severe detonation from an airleak or too lean of jetting. Quote
blowit Posted February 20, 2008 Report Posted February 20, 2008 You may also want to post up your engine mods, if any, and fuel grade you run. A powdered look on the piston is generally detonation but can be induced by the heat of pre-ignition. Tough to say without knowing more but I would be on timing or jetting issues. Brandon Quote
Ducman Posted February 20, 2008 Report Posted February 20, 2008 severe detonation from an airleak or too lean of jetting. or too much timming and/or compression and too little octane to support timming/compression. Quote
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