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#11
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BB Chevelle...
Quote:
Dropped valves, broken springs and keepers were responsible for a lot of CE motors. -wilma
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02 Berger 380hp #95 Lots of L78 Novas Join National Nostalgic Nova! 70 Orange Cooler 69 Camaro |
#12
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This is what the original owner to my L78 conv wrote me
"Yes, I dropped a valve twice, and the street racers/wrenches, said to put after market, better valve springs in, Chevrolet wouldn't do it under warranty. So the third time a valve spring broke, I ran it at high RPM, till it quit, put the valve in the piston. A mechanic that worked on it the third time, told me Baston took it upon themselves, to upgrade the valve springs. Not sure if that was the truth, but never broke a valve spring after that".
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69 RS SS L78 conv 69 RS SS ZL1 69 L78 Chevelle conv 69 L78 Nova 69 L34 Nova 67 SS Chevelle 73 Trans Am |
#13
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Those factory springs are like wet noodles, float the valves causing the rest of the damage.
To quote ssl78.. I cant imagine intentionally blowing up an engine on a new car just to get new springs. Why not purchase and install them himself? |
#14
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----Both times I broke valve springs on my 1966 427/425 Corvette it was on start up. Guess I just lucked out as the inner held the valve up at idle. After the second I had the main Corvette tech at Bob McDormans replace all the springs. He was racing the same combo and put good springs in.......Bill S
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#15
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Because purchasing and installing them himself was $$$ out of his pocket, and if the dealer somehow found out about it later, bye-bye warranty. Blow up the engine and all the expense is covered by GM.
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Bill Pritchard 73 Camaro RS Z28, L82, M20, C60 |
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