1973 - 1979 F-100 & Larger F-Series TrucksDiscuss the Dentsides Ford Truck
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How to Tell When Harmonic Balancer Might Be Going Bad?
I was wondering how to tell when a harmonic balancer is going bad? There is an odd metalic clanging that i can not isolate. It's been happening the last month. It seems almost sporadic, but i can feel and hear it more at 1100rpm in 2nd gear. Though it may appear at other speeds and gears. I've visually inspected everything under the front end and near the trans and engine mounts. I grabbed and tried shaking every moving part under the cab and front suspension but could not find any loose ball joints, nuts/bolts, etc...... I even opened the trans flex plate inspection hole and could not feel any give or free play in the plate to torque converter. I'm perplexed. The truck tracks straight and brakes fine.
If not caught in time, the parts will separate, the pulley may strike the radiator core, taking associated parts along with it. Not pleasant.
I've had one explode on a Olds Cutlass just sitting in a drive through. I'm lucky it was front wheel drive and it just hit the inner fender. Made a nice little dent. Could've been bad if there had been a radiator in front of it. I found out later that there was a recall on those balancers...
Moral of the story, don't wait until it "seperates" to replace.
1976 F250 4x4 Ranger XLT. 445FE, NP435/205, D44/60 4.10
AKA the never ending project.
Here's a pic of my balancer. I am not sure how long that rubber has been peaking out, but that is bad, right?
I'm thinking of ordering a replacement from Summit, but have no clue what to get. I put my engine details(stock 351modified) in their search and i see four options:
Three are rubber dampers, one is liquid. The ATI one says it needs seperate hub. What is that? What do ya'll recommend?
Daily Driver 1978 F150
Last edited by cigarxtc; 05-05-2011 at 12:39 PM.
Reason: added engine model
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