SMALL BLOCK CHEVY PROBE DOME PISTONS, 6.00 RODS AIR FLOW RESHEARCH HEADS 23 DEGREE 65 CC CHAMBERS. THE PISTONS ARE HITTING THE SPARK PLUGS. ON THE EVEN SIDE 1 PLUG WAS HIT, ON THE ODD SIDE 3 WERE HIT.I AM USING THE SPARK PLUGS THAT THE HEAD MANUFACTURE CALLS FOR. SO I NEED TO KNOW HOW MUCH TO SHIM THEM SO THE PLUGS DO NOT HIT THE PISTONS.
SCOTIE
THICKEST SHIM IS 1.52 SPARK PLUG # A/C 41-629. I INDEXED A COUPLE OF PLUGS LATE LAST NIGHT, WILL THAT HELP ME WITH MY PROBLEM? ON THE TWO I INDEXWD LAST NIGHT THE THICKEST SHIM WOULD NOT ALLOW ME TO INDEX THEM CORRECTLY.
SIR, YES IT IS RIGHT AT 1 INCH I HAVE .045 PLUG GAP TOO. AND THANK YOU FOR YOUR HELP THUS FAR. I DO NOT WANT TO BE A PAIN IN THE NECK ON THIS ISSUE BUT I DO NOT KNOW WHAT TO DO.
THE ENGINE TURNS OVER REAL NICE BY HAND. SO NO VALVE PROBLEMS. JUST THE PLUGS ARE HITTING THE PISTONS. AND NOT ALL THE PLUGS ARE BEING HIT. IT IS WEIRD.
SIR,
YES I UNDERSTAND. I NEED A PLUG THAT HAS A SHORTER THREADED AREA. WHAT PT.# ARE THE 1/2 REACH? AND IF YOU WERE ME WHAT PLUG WOULD YOU TRY FIRST. AND I UNDERSTAND THAT I CAN INDEX THESE PLUGS. WHERE SHOULD THE TIP OF THE ELECTRODE BE POINTING WHEN I INDEX THESE PLUGS YOU SUGGESTED?
YES I HAVE DONE ENGOUGH ENGINES TO KNOW THAT I HAD A MAJOR ISSUE, I JUST DID NOT KNOW HOW TO SOLVE THE ISSUE. THE HIGH DOME A LONG WITH THE TIGHT CHAMBERS ON THE HEAD HAS CAUSED THIS PROBLEM.
ABOUT TWO A CLOCK AREA? AND HOW DO I PAY YOU FOR YOUR KIND AND GOOD SERVICE TO ME. I THANK YOU FOR STAYING WITH ME AND GETTING TO THE BOTTOM OF THIS ISSUE.
Chevy Technician
15 years GM master tech
I HAVE PAID YOU FOR YOUR GREAT SERVICE TO ME. I THANK YOU SO VERY MUCH FOR STAYING WITH ME ON THIS ISSUE AND HELPING GET TO THE BOTTOM OF THIS PROBLEM. I WILL MOST CERTAINLY USE YOU AGAIN!!
THANK YOU VERY MUCH,
I JUST GOT BACK FROM THE PARTS STORE AND THE ATTENDENT WENT THROUGHT ALL THE PLUGS THEY HAD, HOWEVER THE PART NUMBERS YOU GAVE ME WERE THE SAME LENGTH AS THE ONES I HAD. SO AFTER A LOT OF EFFORT ON THE PARTS GUY REALLY TRYING HARD TO HELP ME WE CAME UP WITH A PLUG THAT YOU SAID WOULD WORK. IT IS THE 1/2 INCH LENGHT PLUG YOU MENTIONED, BUT IT WAS A AUTOLITE PART NUMBER 85 BUT IT TOOK A 13/16 SCOKET TO PUT IT ON. AND IT WAS A LITTLE HOTTER PLUG. INSTEAD OF THE 5/8. BUT ACCORDING TO WHAT YOU HAD TOLD ME ABOUT THE 1/2 INCH LONG PLUG, THE AUTOLITE 85 ARE RIGHT ON THE MONEY OF BEING 1/2 INCH LONG FROM THE BASE OF THE PLUG TO THE TIP OF THE ELECTRODE. I THOUGHT YOU MIGHT WANT TO KNOW THIS. AND IF YOU NEED TO TELL ME SOMETHING I DO NOT KNOW, PLEASE TELL ME. AND I STILL THANK YOU BECAUSE YOU PUT ME ON TRACK TO GIVE ME THE INFORMATION SO I COULD LOOK FOR WHAT I NEEDED, PLUS A GREAT EFFORT FROM THE PARTS GUY.
THANKS,
SO YOU THINK I AM O.K. WITH THESE PLUGS? AND THE CUSTOMER RUNNING A HIGH OCTANE GAS. IT IS A STREET CAR, HE SAYS HE DOSE NOT DRIVE IT VERY MUCH. JUST SOMETINES ON THE WEEKENDS.