Cooked/tweaked valves?
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From: Zionsville, IN
^^^I don't buy that. I would agree that getting on the two-step without the rockers locked (VTEC) engaged, is a big no-no. I'm pretty sure that's what he meant? Ya and I had this conversation during the summer when I was at there shop picking up my head.
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From: Sellersburg, IN
You may be right on that. I just remember talking to Jon Le and he asking, at the time I was still on the stock valvetrain, if I was running any type of 2 step and I said no. He said good because its very hard on the stock valvetrain. Thats all the discussion we had on it and I assumed he meant to just completely stay away from the 2 step if I had the stock valvetrain.
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From: Tampa, FL
Originally Posted by boostedf22c,Feb 4 2010, 05:48 PM
^^^I don't buy that. I would agree that getting on the two-step without the rockers locked (VTEC) engaged, is a big no-no. I'm pretty sure that's what he meant? Ya and I had this conversation during the summer when I was at there shop picking up my head.
Not asking to start a pissing match at all...want to get this info out for everyone's situational awareness
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From: Cedar Falls. Iowa
Originally Posted by Evans Tuning,Feb 4 2010, 05:55 AM
I am bit surprised that people are having issues with the stock valves warping under heat. Are you guys drag racing (i.e 2 step and anti-lag) or street driving/highway pull type of driving? I have only had issues with the exhaust valves warping on our drag car with heavy amount of anti-lag/2 step. We'd get about 15-20 passes before I was seeing 60-75% leakdown out of the exhaust valves, but the car would run the same mph at the track regardless. High rpm seemed to seal them up just find under 30-40 psi, the trap speeds back up that idea as well. I know the Ecotec engines in the Pro Cobalts had similar experiences as well after a few passes (60 psi+), but ran good mph trap speeds.
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From: Cedar Falls. Iowa
Originally Posted by dsddcd,Jan 30 2010, 08:12 PM
I was only running the Greddy kit with concervative timing and all mine warped.
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From: Cedar Falls. Iowa
Originally Posted by boostedf22c,Feb 4 2010, 07:52 AM
Just hope the worse doesn't happen and wipe out your entire motor. I got VERY lucky when my valves broke. VERY.
Typically it's catastrophic when that happens.
You also want to make sure that your VTEC is locked in while on the two step. This can cause some serious issues too if overlooked.
Typically it's catastrophic when that happens.
You also want to make sure that your VTEC is locked in while on the two step. This can cause some serious issues too if overlooked.
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From: Zionsville, IN
Originally Posted by siadam,Feb 5 2010, 02:27 AM
Thats a start.
Interested as well, I was unaware of that.
Interested as well, I was unaware of that.