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crank damper

Posted By emtdude56 Last Month
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emtdude56
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can any one recommend a good place to get a new or rebuilt crankshaft damper for a 312 thanks
Ted
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If going for used, then try any of the damper rebuilders and see if they have any in stock.  Some of those rebuilders would include:
Damper Dudes (CA),  http://www.damperdudes.net/
Dale Manufacturing (OR), http://hbrepair.com/
Winslow Manufacturing (NC), http://www.winslowmfg.net/ 
Damper Doctor (CA), https://www.yelp.com/biz/damper-doctor-redding

If going for new, then try:
John Mummert Y-Block, http://www.ford-y-block.com/
Summit, https://www.summitracing.com/search?SortBy=BestKeywordMatch&SortOrder=Ascending&keyword=pb1199N
Innovators West, https://innovatorswest.com/220-SBF-Damper.html


Lorena, Texas (South of Waco)
emtdude56
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thanks very much for the info also what are your thoughts on pressurized rocker arms and is there any thing else that would have to be done to the oiling system if used
Ted
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emtdude56 (4/25/2019)
Thanks very much for the info.  Also what are your thoughts on pressurized rocker arms and is there any thing else that would have to be done to the oiling system if used?

Opinions vary on the need to do away with the overflow tubes at the rocker arms.  I go both ways on the rocker arm shaft overflow tubes depending upon the application.  I recently did a 420K+ mile 292 that still had the overflow tubes and the top end was just fine.  My own ’55 Customline with a 272 still has the overflow tubes and the valves are checked at 45K mile intervals and all is well with that engine also.  There are instances where I do pressurize the rocker arm shafts though.  Here are some past threads covering the subject.
 
Pressurized rocker shafts
Pressurized rocker shafts more
Pressurized timing chain oiling
 Slotting the rocker shafts for improved oiling


Lorena, Texas (South of Waco)
55charliebird
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I sent mine (292) off to Winslow Mfg. in Wendell N.C.  Sent it last week, should be back this week.  I'll let you know.
DiLL
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Ted, at what point would the innovators west damper be a better choice than the Dorman replacement? Thanks!

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charliemccraney
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I can offer some insight about that question.

If I'm not mistaken, the Dorman is simply a rebranded Powerbond and both are basic stock replacements.

Innovators west is a performance oriented damper that will work fine for the street but it is quite an investment to make it work for the street.  The #1 problem is the pulleys.  The dimensions of the damper will place the crank pulley farther forward than stock.  For all but possibly a T-Bird application, this requires shimming existing pulleys, finding aftermarket pulleys for other engines that fit or having custom pulleys made.  Another issue is front engine mounts or steady rests may need to be clearanced.  Another is that the damper is slightly larger in diameter, which requires that the timing pointer be adjusted or a new one made to fit.  So all together, it is a good bit of time and / or money and it is probably not really worth it unless it is for a high performance street engine or race engine - this is where I'll defer to Ted.

For my install, a custom crank pulley was required because I could not find anything with a diameter that was sufficient for street use.  I also opted for custom water pump and alternator pulleys, again due to diameter requirements, to make everything work well for the street, but also aesthetics and fan spacing..


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ian57tbird
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Just being inquisitive, I went on the links that Ted posted for new dampers. Reading through the Summit feedback comments it appears quite poor. Comments of the weight coming loose after a short period of time. They also mentioned that they needed to be honed as they did not fit the crank properly.


62bigwindow
Posted 3 Weeks Ago
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I had to have the Powerbond damper I bought opened up .001-.002. It was just too tight to install. Luckily the local machine shop is run by a bunch of great guys and they only charged me $10 to do it. Also the timing marks are painted on. Other than that its performing well. I will add that before you undertake this task get the proper puller and installer. Dont try to pull it in with the threads on the crankshaft.

Durham Missouri
Ted
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DiLL (5/1/2019)
Ted, at what point would the Innovators West damper be a better choice than the Dorman replacement? Thanks!

If you are in a racing venue that requires a SFI approved damper, then the Innovators West damper fills that need for the Ford Y.
 
The oem car/truck dampers are marginally on the light side and prove to be inadequate in performance applications.  The rubber bond or the elastometer fails much sooner on those dampers in high performance applications.  Where the compression ratio has been increased on the Ford Y engines, the Innovators West damper makes more horsepower than the available oem style elastometer dampers.  It does this by reducing the harmonics that are present at the crankshaft.  As the compression ratio rises, so does the need for a better than stock damper.  When the Innovators West dampers are tested against the ATI Super Dampers on both the Ford FE’s and the Ford Y engines, the IW dampers do come out on top.
 
The IW dampers can however be used on stock compression engines without any concerns about performance or engine wear.  Having more damper than is necessary is not a performance deterrent.  As Charlie brings up, when using the IW dampers in a stock car or pickup Y application where a belt for the water pump and/or alternator is required, then the front belt pulley for the IW damper is about ¾” more forward than the standard belt location.  This has to do with the basic design of the IW damper being thicker on its front side than a standard Y damper.  This same issue comes up when trying to retrofit the ATI dampers also to the Ford Y.  This forces some fabrication work with moving the water pump pulley and gen/alt pulley forward for the car and pickup/truck applications.  For the ’55-57 Thunderbird application, there is an IW damper available with a 1” longer hub that puts the belt in the correct location for the Thunderbirds.  That particular damper is not a catalogue offering and is something that must be special ordered.
 
If there’s a single advantage to the Innovators West damper over the factory style damper, it has to do with the IW damper not being elastometer in design which eliminates that as a potential failure point.  Elastometer dampers are typically good for about ten years at which point the rubber that’s used a bonding medium has degraded to the point that it’s no longer giving peak performance.  The rubber eventually fails at which point the damper delaminates or comes apart.



Lorena, Texas (South of Waco)


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