Standard Valves

[MR331307]

Im very pissed off at the moment

My race engine Has SNAPED a valve UNDER THE COLET AND RETAINER DROPING THE VALVE Bending it smashing the Head and Putting a hole through a New forged piston which has done 15 mins work of running in on the dyno.So much for a Race motor lasting.This just proves that ANYTHING CAN HAPPEN with any motor.I have organised a New Piston and Head for now.I carnt believe it happened.

I carnt blame the people who setup the Head either as SHIT happens.But still couldnt believe what i seen

Ill post photos tomorrow but looks like someone got a nail gun and shoot the Valve through the piston.

f**kEN GETS ME ANGRY AFTER 4 NIGHTS OF 16 HOUR SHIFTS OF WORK but yeah shit happens and like i said before Anything can happen so yeah

Does anyone know how much of a spring load can the Valves hold.I have tommie type b springs with 272 @ 11.5 lift cams.Anyone else had any problems

Edited August 2, 2006 by MR331307

[T04GTR]

thats pretty boring : sory to hear

valves them selves are very strong. as theres usaly only about 80-120lb presure at the seat.

my work has recently seen that titanium retainers n shit arnt all trhere cracked up to be as it droped a valve at 9grand coming onto the main straight at oran park

they fatige badly and just snap. say 10k worth of driving.

what retainers are you using. and are the springs not "stacking solid" at full lift?

there must of been a fault with the retainer/collet or a fractured valve.

or they could not of been propery instaled.

all of wich are a posibility

[T04GTR]

standard valves are good enough for the magority of 1000hp rb26's

[MR331307]

thats pretty boring : sory to hear

valves them selves are very strong. as theres usaly only about 80-120lb presure at the seat.

my work has recently seen that titanium retainers n shit arnt all trhere cracked up to be as it droped a valve at 9grand coming onto the main straight at oran park

they fatige badly and just snap. say 10k worth of driving.

what retainers are you using. and are the springs not "stacking solid" at full lift?

there must of been a fault with the retainer/collet or a fractured valve.

or they could not of been propery instaled.

all of wich are a posibility

well the retainers and collets are Tommies but the Valves are standard skyline.The Head was done @ a professional Head Machine shop in wollongong and yeah all i can say.I think it might be a faulty Valve as you will see tomorrow when i post PICTS.The valve Snapped under the Collet retainer area.The Springs are not BINDING as the people who set it up checked over everything.

I think its a faulty valve.

I just needa know what sort of Power,CAM lift,Springs the standard Valves are able to hold to and what valves do people use when into this performance area For drag Cars/Street