eg6madness

i have heard that if ya miss-shift a B20VTEC it can cause serious harm ( such a bent valves , etc ) ...... I was wondering how safe is it to downshift a B20VTEC and apply the power hard ......

for those of you who don't understand ....here is an example .... you are at the track on the straight speed up to 140+kph (in 3rd or 4th gear ) , approaching a hard right hand corner , you late brake and downshift on entering the corner, and start to ease brake pressure . When you release the clutch your car is near the apex so time to apply power , you flat you accelerator foot .

Can the B20VTEC take this kind of pounding ?
Can stronger valve springs help the life of the motor ?

JD_B18CDX

Depending on the head u r using (B16, b18c1 or B18c5) and assuming the heads are stock, u must not overev past the heads readline.

So if you dowshift from 4rth to third and suddenly rev 8,500.... u will most likely bend the valves.
Below the head's redline (before valve float) ur pretty safe.