straight aheadBump. Looking for a direction here please
So how we tell what the crank is? Should it be marked like cams should be?People tend to get internally 0 balanced and rotating assembly balanced mixed up. On my 331 the rods and pistons are scale balanced...then the rotating assembly was balanced to 28oz. imbalance. It wasn't zero balanced...but it was explained to me as being internally balanced.
You can pull the balancer off the engine and take pics of it front and rear. We should be able to find if it's 50oz, 28oz, or 0oz. More than likely it's the " run of the mill " Scat 347 rotating assembly, that should be 28oz., with the wrong 50oz flywheel / flexplate.
So how we tell what the crank is? Should it be marked like cams should be?
That’s what I had in mind, but did not want to say wrong.The only way to tell is to drop the pan. Scat will have their name on the first counter weight and a laser etched part number. The rods also will have part numbers that will help identify size.
Did he say he had a miss? he said he had a vibration. Theres a significant difference between a dead misfire and a rotational vibration…( like the word thud or thump versus buzz). I’m thinking he has a buzz instead of a thump.straight ahead
but seriously, was the miss there when you bought it?
Pull a plug wire off (one at a time) while idling, use a plug wire tool or a pair of pliers with a good insulated handle, the jult you'll get can be exciting, idle will drop and it will run worse till you get to the one with no spark that one will not change, if all's well there then you may have imbalance issue.
Why 5 grand?I have seen transmissions get replaced because of a engine miss
A real pisser
Had a 96 Taurus at the dealer under warranty that vibrated so bad at freeway speed you could hardly keep it on the road
Guy working on it replaced the wheel bearings Then the cv axles. They had the trans man look at the trans and overhauled the AXOD
I finally got the car but was making the original tech fix it
Had him check the tire balance for the fourth? time. It was out 1/4 ounce (one tire)
Had him spin it again it was out 3 ounces
Had him spin it again it was out 8 ounces
I told him to break down the tire and lets see what's in there
He got so excited he did not wait for all the air to shoot out before hitting the bead ripper
It shot fix a flat all over his ass
Cost 5 grand to fix that one by ,mistake
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