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View Full Version : Harmonic balancer bit the dust today



quicktsi
04-10-2009, 12:03 AM
I was planning to check it tomorrow, but instead will be replacing it. Time to start reading up. It looks like the one in the picture below. I got the car home radiator fan out and then pulled the balancer out.

http://www.tccoa.com/articles/mn12how-to/BHJ/bad-crank.jpg

89SCBoosted
04-10-2009, 06:15 AM
i blew mine on my 89' the day before yesterday, only a matter of time with these.... no damage at all this time, not even the crank sensor... was at low rpm when it failed...

Duffy Floyd
04-10-2009, 07:15 AM
I have yet to hear of any BHJ units failing. Just a datapoint.

quicktsi
04-10-2009, 08:59 AM
I was going home on the turnpike at about 70mph and was gently speeding up to pass a car when it let go. I am considering the BHJ, but do not want the car to be down for a week waiting on parts.

quicktsi
04-11-2009, 11:28 AM
Here are the pictures. I am working on getting the BHJ ordered from Spinning Wheels-SC. I picked up the front seal while at the Ford dealership. I am going to get the front case area cleaned up and the seal replaced today. So far everything has come out pretty easily.

http://i169.photobucket.com/albums/u222/quicktsi/Picture1125.jpg

http://i169.photobucket.com/albums/u222/quicktsi/Picture1124.jpg

http://i169.photobucket.com/albums/u222/quicktsi/Picture1123.jpg

sinhumane
04-11-2009, 11:35 AM
lol, thats what my front seal looks like... wheres teh coolant from, though?

quicktsi
04-11-2009, 11:45 AM
To get the balancer out we pulled the upper radiator hose loose to get the fan out and some spilled out.

SuperCB
04-12-2009, 06:11 PM
Looks just like mine.....

http://chrisb.users.superford.org/Thunderbird/Projects/Harmonic_Balancer/Harmonic_Balancer_003.JPG

http://chrisb.users.superford.org/Thunderbird/Projects/Harmonic_Balancer/Harmonic_Balancer_005.JPG



Take pics of the BHJ when you get it. If forgot to and now I can't see it. :D

quicktsi
04-16-2009, 10:47 PM
I got the BHJ today but will get it installed this weekend. What have others done to keep it from rusting? Have some shot it with a clear coat?

kenewagner
04-17-2009, 08:48 AM
I got the BHJ today but will get it installed this weekend. What have others done to keep it from rusting? Have some shot it with a clear coat?

I bought a spray can of clear and shot mine. Still looks like it did when I bought it

Ken

275hptbirdsc
04-17-2009, 01:22 PM
Sorry to sound like a noob but what is the harmonic balancer and how will I know if mine fails ( which t sounds like it does alot)?

quicktsi
04-19-2009, 01:12 AM
275hptbirdsc

Here is more information for you to review.

http://www.tccoa.com/articles/mn12how-to/BHJ/BHJ-install.html

quicktsi
04-19-2009, 01:19 AM
I got some work done tonight. It should be pretty easy to finish it up tomorrow. My BHJ appears to have the 26 ATC mark on it. See the pictures below.

SHOWING THE MEASUREMENT FROM 0 TO 26ATC
http://i169.photobucket.com/albums/u222/quicktsi/Picture1131.jpg

STOCK MARKS VS BHJ
http://i169.photobucket.com/albums/u222/quicktsi/Picture1132.jpg

BHJ MARKED
http://i169.photobucket.com/albums/u222/quicktsi/Picture1134.jpg

TAPED OFF TO CLEAR COAT
http://i169.photobucket.com/albums/u222/quicktsi/Picture1135.jpg

quicktsi
04-19-2009, 01:23 AM
SHOWING HOW MUCH WILL BE REMOVED FROM THE BOLTS
http://i169.photobucket.com/albums/u222/quicktsi/Picture1136.jpg

ALL BOLTS TAPED READY TO CUT
http://i169.photobucket.com/albums/u222/quicktsi/Picture1137.jpg

WEIGHED THEM TO MAKE SURE ALL EQUAL
http://i169.photobucket.com/albums/u222/quicktsi/Picture1138.jpg

MARKED PULLEY TIMING MARK WITH WHITE TOUCH UP PAINT
http://i169.photobucket.com/albums/u222/quicktsi/Picture1139.jpg

MARKED TIMING MARK WITH WHITE TOUCH UP PAINT
http://i169.photobucket.com/albums/u222/quicktsi/Picture1140.jpg

David Neibert
04-19-2009, 11:08 AM
JD,

Nice job...good to see that BHJ is now putting the 26 degree mark on the balancer. Suggest you ditch the plastic cover...all it does is get in your way.

David

quicktsi
04-19-2009, 11:46 AM
It is getting ditched as it got chewed up when the harmonic balancer failed.

quicktsi
04-25-2009, 12:52 AM
Everything is back together and running. I got lucky and it did not take out the crank position sensor.

The only real damage was when the harmonic balancer broke off it put a, pinhole in one of the transmission cooler lines. I did not catch it until I started it up and it started leaking. I had to replace the line. Replacing the line created a challenge to find the right size adapter, so it would seat properly. The factory fitting was to deep for the new line.

I just need to finish the headlight restoration I started. I just finished it tonight and the new seal is drying.