Some mysteries solved???

[greg g]

It has been asked what decided the whys and where fors of vibration dampers, and pulleys. this chart says that the Special deluxes were equped with dampers and deluxes were not. Ok but!!! I think that we have seen enough inconsistancy with that the it would seem that this was not always the case. However the commanality of engine swaps and parts swaps during maintenence that the rhyme or reason of original equipment is murky at best.

If you scan the rest of the article, there are several mentions of shortages, supplier problems, stock piles of pre war parts etc. So this reinforces that Chysler and Plymouth used what ever was available to get the job done to get cars out to a hugry market. So vibration dampers, and internal/vs external bypass, as well as carpets and or mats was probably a day to day decission to get er done.

http://www.allpar.com/history/plymouth/1946-1959/plymouth-2.html

[55 Fargo]

Greg, I could buy into this, a hot post war market, production lines, with major shift from war equipment to domestic cars, shortages, suppliers, and pre1946 stock.

There was no doubt a get these cars to market, the faster the better, company bottom line.

The market need, and wanted new cars, don't think most consumers could care a less about engineering differences such as you have mentioned, as long as the cars looked and performed well, the world was good.

Oh those were simpler less complicated and no doubt friendlier times, I see the world change so quickly, and not all for the good....

[steveplym]

On the subject of vibration dampers. Is there a noticeable difference in a car with an engine that has just the pulley versus the damper?

I have just the pulley on mine and I have been trying to solve a vibration problem on my car. Went as far as to change all the engine mounts, etc. All new driveshaft and modern u-joints.

The car had a damper when I rebuilt the motor, but I had a spare motor and could not find the damper when I was reassembling it so I just used the pulley.

It probably will not make much of a difference, but figured I would ask.

[greg g]

Well, when and how does the vibration present itself.

[claybill]

i get a vibration on my 41 at about 45-50 mph..i checked most things, wheels, bearings, mounts..tires..maybe it's the damper. everyting is still under winter wraps..come on sunshine.!!!

bill

[greg g]

Most drive train and engine related vibrations are evident at all speeds and increase in frequency with the speed. If yours is only in that range, I would look at tire balance and or a bent rim. or bad tire. Try switching wheels around from one location to another to see if you can isolate it, or try your spare at each location to see it has a bearing on the vibrations.

Also make sure you e brake is fully releasing and the drum is not bent or out of round.

one other thing. Put a mark on your drive shaft and on the adjacent flange, then rotate the drive shaft 180 degrees in relation to the flange. You cand do this one end at a time to see if anything changes. you can also try to swap it end for end.

also Take a close look at the pullys and make sure they are running true.