Need orifice # for EGR valve

[fatherdoug]

I bought a NOS Federal mogul EGR valve that I was told was the correct application for my truck. The ford number that I purchased is E3UE-9D448-A1A. The number that is on the truck now is ford number D8TE-9D475-A1A.

The Federal Mogul EGR valve has a packet full of inlet and outlet orifices, and the one that is currently on the truck had no orifice on either the inlet or outlet passage.

Now my question is: can someone tell me what the correct orifice size is on the EGR inlet/outlet for ford part number D8TE-9D475-A1A?

Application is 1978 F-150. 400 motor. 49 state emissions, non catalytic converter, 2 bbl carb(original 2150).

The old valve is not shutting off completely when vacuum decreases.

 

[Mil1ion]

No description is available that I can find.

Have you looked on the rockauto site ?

edit

http://www.rockauto.com/catalog/moreinfo.php?pk=945628

 

[fatherdoug]

Yes, Dennis, I did. Rockauto.com does not list the differences between the two or the actual orifice sizes. Thank You.

 

[fatherdoug]

Well, right or wrong, I went with the smallest orifice that came in the package, which was a .209 for the inlet, and no orifice on the outlet. I've been having a stumbling problem from a start, but only after the vacuum valve warms up enough to pull vacuum on the EGR valve. The new EGR valve with the .209 orifice solved the stumbling problem. I would still like to know what the correct orifice size is, if anybody has that info.

 

[73F100Shortbed]

Maybe try the different sizes and see what effects it has if no one has an answer.

 

[fatherdoug]

Thanks, Sean. I think I might leave it alone for awhile since problem is solved, and Montana doesn't care about emissions inspections. I took the truck for a short drive this morning, and it ran pretty good, with no mid-throttle ping either.

 

[73F100Shortbed]

At least it solved your problem. I don't ever remember actually seeing an egr valve that had choices come with it LOL. Any one that I ever put on a car you just bolted it on.

 

[Mil1ion]

THis is the only thing I can find that mentions sizes of vacuum line thus orifice ... if that helps

Letter F
Number 4

 

[fatherdoug]

Thank You, Dennis. I appreciate the info.