was going for one last ride of the year, stated it up and there was a clang noise, turns out pulley or hymonic balancer came lose that has the timing mark on it, found alot of plastic on the floor, so that was as far as i got on the trip,. now i've been working all day taken everything apart, tomorro0w i pull the hymonic balancer off, but now for my question,l ihave a 312 and i need a new hymonic balancer, any one know where i can get one? thanks guys PS, ihave to add , the harmonic balancer, is in 3 pieces, 1 is the mail pulley, then theres a plastic sleeve, then theres a steel ring about 1/2" thick and about 1" wide, let me refase that, the main pulley, then theres a plastic sleeve and a steel ring over that, any one understand what i'm saying? another question, why do u need the steel ring?, all it has is the timing mark, i don't see what its needed for, i think it can be tosed, whats your thougfhts?
Is there a difference in the Y-block harmonic balancers?
sorry, my knowledge of motors is zilch, i can take them apart & put back together, thats about it, I don't know what a y block is, all i know is that what i have is a 312, i've worked on 238 flat hds and 351w, you will have ask someone else about y blocks. I myself don't see why a hymonic blancer is needed, never noticed them on other motors
Don't throw it out. It can be rebuilt if a more price competitive one isn't found.
links are examples not endorsements:
https://www.damperdudes.net/harmonic-balancers/ford/ford-312-1957-thunderbird/
https://www.macsautoparts.com/store/harmonic-balancer-vibration-damper-single-sheave-272-292-and-312-v8-ford.html
ok gasman, the second listin g is the one i have, says deiscontinuid, what now, who rebuilds them?, thanks fore the info, jerry
ok gasman, again, i don't understand what this thing does, other motors that i've worked on didn't have a harmonic balancer, is it necessary? jerry
It does exactly what its name implies. Smooths engine vibrations that are otherwise present. I'm sure you can run without it, but I wouldn't. There are still a lot of Y blocks out there for parts and there are rebuilts available. Most engines have a vibration balancer.
Here is an easy explanation of how and why -
https://auto.howstuffworks.com/harmonic-balancer.htm
thanks forall the info, i found what i needed in a mustang forum, one of the guys knew exactly what i needed