LS/VTEC question

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Apr 30, 2002 | 10:48 AM

#1 (permalink)

Rhaco

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Does anyone know why a brand new lsvtec would be pinging? it has all brand new stuff. The guy who built it said its pinging because of the forged pistons that are being used.

Apr 30, 2002 | 11:08 AM

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Matt Vassallo

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what pistons are in it
what fuel are you using
what plugs are you using
what timing are you running

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Apr 30, 2002 | 11:26 AM

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bored at work

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Yeah what comp ratio is it running. Ive ran my lsvtec with 11:1 comp and timing set between 18-20 btdc and ive never pinged.

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Apr 30, 2002 | 07:49 PM

#4 (permalink)

hybridEG

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does it only make the noise untill the car is whamed up. if so it prolly is just the piston slap. thr pistons are oval and then when the car is whamed up the pistons will fill the cylinder in a O shape instead of oval.