Dampner Timing Marks


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By Outlaw56 - 11 Years Ago
I did a search but have a hard time getting that to work. I hate to start a new thread every time I have a question but thats all I have been able to use. So I give up, what is the trick to timing marks on Y Block Dampners? Are they all the same or different depending on dampner. I marked mine before I removed it, but I broke it cleaning the threads with a bolt. I went to tight and heard it snap and some penetrating oil ozzed out on the back side. Got that sick feeling. So, I have extras but, no timing mark. The old one was almost in line with the key slot on the crankshaft, but again, only mark is the one I made in line with the indicator before I removed it. The donar is identical, including no apparent timing marks.
By Ted - 11 Years Ago

See if this pair of past threads helps.

http://forums.y-blocksforever.com/FindPost9062.aspx

http://forums.y-blocksforever.com/FindPost63763.aspx

By Outlaw56 - 11 Years Ago
Ted,

The first thread shows three mounting holes on the super dampner, mine only has two. But it looks like that does not matter in the process. I just go straight out from the key slot and then to the right 108 degrees. I made a scratch on the dampner I removed. If you go out in a straight line, the mark is almost right there. I assume that one had slipped at some point in time. Once they slip are they prone to become problematic? Is there a source who rebuilds dampners or am I better off just getting a new one? The second thread will work if all else fails. Thanks for your help.
By Outlaw56 - 11 Years Ago
Thanks to Teds post, I located the TDC. On the dampener I broke, TCD was almost straight across from the key slot, actually just a little to the left. On the replacement dampner, it was in the 108 degree area based on the diagram Ted provided. I assume this means the stock dampener I removed had slipped. The replacement appears not to have slipped. Hope this photo helps someone else find thier TDC markings!  I am going to paint it up, where should I put a white paint mark for fast reference?
By Jeff - 11 Years Ago
I recently had a problem with adjusting the valves and timing on my '57 312.  Finally determined the outer ring on the dampener had slipped.  I sent it to Damper Dudes in CA for repair.
They re-bonded the outer ring in the correct location and put a speed sleeve on the shaft. Slightly over a $100 and quick turnaround.
By charliemccraney - 11 Years Ago
Outlaw56 (4/2/2014)
I am going to paint it up, where should I put a white paint mark for fast reference?

Every one of those marks and numbers, to make it easier to tune and trouble shoot down the road.  I marked mine up to 40 degrees although the factory markings stop at 30 and every 90 degrees for valve checks.  I used what I had on hand, white rustoleum primer, and it has held up well for 20k miles or so.  Use something like a sewing needle, get a dab of paint on the end and fill in the mark.  You could mark the initial advance all the way across so that it stands out better.  12 degrees is a good place to start for that one.

By lyonroad - 11 Years Ago
Outlaw56 (4/2/2014)
Ted,

http://forums.y-blocksforever.com/uploads/images/1962f7ce-5ae9-411f-be37-4973.jpg Is there a source who rebuilds dampners or am I better off just getting a new one? The second thread will work if all else fails. Thanks for your help.

Darrell this is what happened to mine.  It came apart with no tools involved.  I sent mine out to Dale Manufacturing, only because he is just down the coast in Salem Oregon.  He has a jig for the Y Block damper.

By Ted - 11 Years Ago
Outlaw56 (4/2/2014)
Ted,

The first thread shows three mounting holes on the super dampner, mine only has two. But it looks like that does not matter in the process. I just go straight out from the key slot and then to the right 108 degrees. I made a scratch on the dampner I removed. If you go out in a straight line, the mark is almost right there. I assume that one had slipped at some point in time. Once they slip are they prone to become problematic? Is there a source who rebuilds dampners or am I better off just getting a new one? The second thread will work if all else fails. Thanks for your help.


The ATI damper is designed to use the scrub pulleys, hence the three bolt design.  The Innovators West damper is a four bolt hole design which accommodates using the SBF pulleys.  Both of these dampers use the factory 108° index from the keyway to locate TDC on the Ford Y engines.

Once a damper slips, it's not going to stay put on the original rubber.  For rebuilding dampers, I typically use The Damper Doctor.  http://www.damperdoctor.com/