Dorman Phasers. Differences from stock

[BruceH]

I had ordered a set of Dorman phasers to replace the Motorcraft phasers I had damaged.

Most measurements are about the same when it comes to depth of machining, etc. There is a difference in where the spring and modulator are located but that's nothing compared to how different the internal design is.

The oil control chambers are shaped differently and they have restricted movement when compared to a stock phaser. My eyball guess is that they will only allow 40 degrees of retard vs 60 for the stock units.

The differently shaped oil chambers means that existing limiters or lockouts aren't going to work. I'm modifying a set of lockouts to fit the one chamber in the phaser that has straight angles. Doing this will allow me to get the motor back together and the car on the road.

The short version is that these won't work with any commercial limiter or lockout.

I'm right back where I started except my wallet is lighter by $250 and the car has been down for a week. I really need to listen to those inner voices when they are right, I had a feeling that I should just leave well enough alone but I didn't follow it.

Here's what it looks like inside.



Here's how the stock phaser chambers look:

 

[swflastang05]

Wow that's a significant difference, thanks for reporting your CSI investigation findings!

 

[01yellerCobra]

Wouldn't that much of a difference cause issues with a stock tune?

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[pics06gtstang]

@ BruceH . did ya check the stretch bolts ?
and yeppers , always go with you first gut feeling
i dont but should as well ..

 

[BruceH]

@ BruceH . did ya check the stretch bolts ?
and yeppers , always go with you first gut feeling
i dont but should as well ..

They looked the same except for the finish. The Dorman bolts have a parkerized looking finish.

 

[eighty6gt]

Bruce, what are the small square inserts at the ends of the flying arms?? Seals?

 

[BruceH]

Bruce, what are the small square inserts at the ends of the flying arms?? Seals?

I don't know. Didn't really notice them until you pointed it out. Maybe they were added as a design improvement? They certainly look like a modification of some sort.

 

[skwerl]

They look like seals of some sort, to keep oil from flowing past the tops of the 'arms'. The factory pieces look to have a much tighter tolerance.