1992 5.7L(350cid) rebuild mishap!!!!
#1
Professional Mechanic
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1992 5.7L(350cid) rebuild mishap!!!!
Ive been helping a friend fix his Vandura....we pulled the old heads off(they were cracked....severe overheat) since his funds were low and the bottom end seems OK.....we got reman heads and bolted them on......then he continued to finish the job and was ill informed that the valves were hydraulic and non-adjustable
long story short
he cranked the rockers down tight and tried to start it
it popped and banged thru the throttle body and never ran
a closer look revealed 16 bent push rods
could anything else have gotten fudged up?
please dont say the valves can get hit by the pistons and bend as this is my biggest fear
i posted this here and not in G-vans because i need near real time help from someone who knows the 350 inside out and upside down,THANX ALOT
long story short
he cranked the rockers down tight and tried to start it
it popped and banged thru the throttle body and never ran
a closer look revealed 16 bent push rods
could anything else have gotten fudged up?
please dont say the valves can get hit by the pistons and bend as this is my biggest fear
i posted this here and not in G-vans because i need near real time help from someone who knows the 350 inside out and upside down,THANX ALOT
#2
how long did you guys crank it before realizing there was an issue? i would take a look at the rocker arm studs and rockers. then replace all the lifters, pushrods. yes, lifters need replaced. motor should be ok after that.
#4
One thing I left out.Depends on how hard the lifters was jammed against the cam which was a used cam in the first place and if any of the cam lobes where wiped out because if it.It is possible,but I really don't know not being there.I am sure you don't want to risk putting it back together and then find out it needs a cam....................Do think you need to do some thinking before you make your next move and then learn to live with whatever you decide to do.
Last edited by Terry Neff; April 11th, 2010 at 9:13 PM.
#6
Professional Mechanic
Thread Starter
I def agree with you on complete disassembly.....
BUT I RECOMMENDED A NEW ENGINE TO BEGIN WITH DUE TO THE FACT ITS GOT 160K ON IT AND WAS SERIOUSLY OVERHEATED.....
IF THIS WAS A CUSTOMER...JUST A CUSTOMER....I WOULD TEAR IT BACK APART...SINCE MY NAME RELIED ON IT......BUT THIS IS MY BROKE FRIENDS WORK VAN
IT TOOK HIM BROKE JUST BUYING 2 EBAY HEADS,GASKETS,OIL,COOLANT,PLUGS,ETC,ETC,ETC
hE BOUGHT 16 PUSH RODS AND ANOTHER INTAKE GASKET,i WENT OVER HIS HOUSE AND WE TORE THE INTAKE OFF,LIFTED AND LOOKED AT THE LIFTERS(SEEMED OK),PUT IT ALL BACK TOGETHER,AND I STAYED LONG ENOUGH TO LASH THE VALVES,START IT,AND TIME IT FOR HIM AND IT SEEMED TO BE OK.....
HE IS GOIN TO PUT THE LITTLE STUFF(VALVE COVERS,SERP BELT AND SUCH) BACK TOGETHER AND TEST DRIVE IT TONITE OR TOMORROW AND ILL LET YOU GUYS KNOW HOW IT TURNED OUT
THANX FOR ALL YOUR HELP GUYS
BUT I RECOMMENDED A NEW ENGINE TO BEGIN WITH DUE TO THE FACT ITS GOT 160K ON IT AND WAS SERIOUSLY OVERHEATED.....
IF THIS WAS A CUSTOMER...JUST A CUSTOMER....I WOULD TEAR IT BACK APART...SINCE MY NAME RELIED ON IT......BUT THIS IS MY BROKE FRIENDS WORK VAN
IT TOOK HIM BROKE JUST BUYING 2 EBAY HEADS,GASKETS,OIL,COOLANT,PLUGS,ETC,ETC,ETC
hE BOUGHT 16 PUSH RODS AND ANOTHER INTAKE GASKET,i WENT OVER HIS HOUSE AND WE TORE THE INTAKE OFF,LIFTED AND LOOKED AT THE LIFTERS(SEEMED OK),PUT IT ALL BACK TOGETHER,AND I STAYED LONG ENOUGH TO LASH THE VALVES,START IT,AND TIME IT FOR HIM AND IT SEEMED TO BE OK.....
HE IS GOIN TO PUT THE LITTLE STUFF(VALVE COVERS,SERP BELT AND SUCH) BACK TOGETHER AND TEST DRIVE IT TONITE OR TOMORROW AND ILL LET YOU GUYS KNOW HOW IT TURNED OUT
THANX FOR ALL YOUR HELP GUYS
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