Thread: Ferrea Valve Broke
08-24-2009, 12:24 PM #1
Ferrea Valve Broke
How many people have had problem with Ferrea valves breaking? I have two engines torn up because of them.
08-24-2009, 12:28 PM #2
Are you ckecking your AFR ? It seems like valves get blamed for everything around here. If its lean it will take out a valve.
08-24-2009, 12:43 PM #3
running 11.5 have RRPR, Walbro pump. Not getting hot. 14pd boost 8500rpm not hitting rev limiter. Cant use that for an excuse.
08-24-2009, 02:17 PM #4
- Join Date
- Jul 2007
My mechanic in thailand has also mentioned that he has seen valve failure with the ferrera valves..
08-24-2009, 02:24 PM #5
David, say it ain't so....was this the RXT?
08-24-2009, 03:10 PM #6
Thats why I am sticking to what I know...
Just replaced all my valves with new stock valves after breaking a timming chain...
08-24-2009, 03:20 PM #7
08-24-2009, 03:24 PM #8
08-24-2009, 04:41 PM #9
- Join Date
- Nov 2006
- Delray Beach, Florida
I agree the valves get blamed for everything.
If you are generally running the right retainer and spring, and not floating the valves, they generally do not fail. Our Open class boat runs 25psi boost with stock valves lightened, Ti retainers, and heavyduty springs. Runs 8800rpm up to the revlimiter, with no problems.
WHen the valve follows the cam back onto the seat , it is a very gentle operation. When it floats, the valve basically jumps the ramp (just like a motorcycle jumping a ramp) and it smashes back down on the seat. They do not last long this way. Floating while on the revlimiter is even more violent.
Keep the AFR around 11.5:1 and the EGT below 1500f
That is my experience with it.
08-24-2009, 04:46 PM #10
i had a ferrea valve break last year... sucks!!! engine had less than 10 hours on rebuild and i was just crusing at 6000rpms... engine just quit..
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