hi from pa boater

[bajabob]

hi love racing i put a 540dart with 600 hp in my boat having problem with the vales bending 2 time one vale broke off trying to find out wt happen???:confused::confused::confused:
Big M 9.8


4340 Forged Steel

10.0:1 Forged Pistons
Moly
Race Series
Race Series
ARP
Balance customers Flywheel to Internal
Internal Balancer



Marine Yellow Chromite 345cc Heads
Full Roller Customer Supplied

ARP Complete Set


Race Series
Retro Roller Kit
Double Row Billet / Torrington Bearing
Pro 3/8
Roller 242IN 254 EX / 566IN 575EX


High Volume
Pick up Screen
Performance Shaft Steel Coupler


Install Kit
Marine
Rear Crank Seal


9 qt
Large Windage Tray
Small Windage Tray
Tray Bolts
Chrome
Poweder Coated and Engrave
Chrome


Customer supplied
Customer supplied
Customer supplied


Pro Billet Marine Dist
Marine Box with Rev Liimit


Assembly
Test and Tune


Block Hone
Dynamically Balanced

[Dart Vader]

Hello and welcome to the forums!

I see that you also posted this same topic over here:
http://www.dartheads.com/dartboard/showthread.php?p=3924#post3924

Please just post topics in one spot, that way things stay organized and all the responses are in one place.

Thanks!

[bajabob]

sorry about that

[Awesome Bill]

If the customer supplies me with something, we go over it. If its junk, we don't put it together. Its our job to make sure it does not come back. This is lack of seat and open pressure for the valves used in this application. Popping the head off or bending valves proves the valve train is out of control.