CPRsm
Active Member
Bud I'd skip the boss exh valves for a turbo motor. Stock are a much better idea being inconnel. They're cheap from being mass prodcued as well. Well over 1100rwhp w them. Only thing I would replace them w is Ferrea super alloy if it were me. Idk the cost for those though. Aftermarket tends to be expensive when factory does such a good job that not many people buy the aftermarket stuff.
All bullshit aside some guys plan for valve float as an advantage if you can believe that! lol
I don't see anything wrong w the post. Lighter valves require less spring pressure. But you can't say it's wrong for an average street car and compare to cars running 8-9k, isn't a fair comparison. Engines spinning that high and taking that kind of abuse should be buying the good shit. Not everyone needs them though. We have more than one customer pushing 18-20+ psi on Boss springs. So far logs look good and everything on the dyno showed good and revved clean. We've even run 13psi on stock springs w no issues. Just depends what you're after. I wouldn't have a problem w boss springs on certain apps.This is simply NOT correct and Terrible information being posted for the average guy out there who is building a motor and is trying to weigh options on Valve springs for his expensive motor. The Boss Springs are NOT the ideal option, especially at higher boost levels, even above 12psi.
We can further turn this into a pissing match or edit the post and leave BBR's post alone on providing spring pressure options. The Fastest Coyotes out there are definitely not running a Boss spring, that's a FACT.
All bullshit aside some guys plan for valve float as an advantage if you can believe that! lol