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Hello,
This is my first post. I have a 1980 Olds Omega Brougham X-body with a 2.8L VIN 7. This car was exported from the US to Europe for the European market in late '79 early '80. The underhood emissions decal shows a 'low altitude' setup.
I want to replace the EGR valve but am having a problem finding a match.
The EGR VALVE on the the motor is AFJ 17061104 (no 'P' or 'N' implying straight vacuum ported).
Standard match this with EGV349
Borg Warner with EGR934A
Tomco with style 30315
and KEM with 130237.
Now, I got the KEM replacement valve but can't fit it for the following reason:
The problem is that my valve is held on by two bolts top and bottom as normal but when I remove them the valve does not lift off. Instead I have to unscrew it to remove it. I mean the pintle seat appears to be part of the manifold and the valve centre hole threads onto it. So, after removing the valve I see a raised thread on the manifold and a correctly shaped seat inside that. Now, I can't see a seam and I don't want to damage the manifold. Is it my imagination, is the seat actually part of the manifold or is it just seized.
From what I can see the replacement valves do not have any seat let alone an internal thread to screw onto an existing seat, i.e. they are plain and fit flush with the manifold. In the case of the KEM replacement valve; one has to select a washer to go into the valve centre hole (washer diameter and thickness depending on the OEM valve number). This apparantely provides the correct gap arount the pintle. But where is the seat?
I am really confused. Another thing that gets me is that although my valve does not have a 'P' or an 'N' after the part number, which should imply that it is operated by ported vacuum from the TVS, nonetheless the pintle has hole at the side of it's tip which tells me that it is actually a backpressure valve.
Finally, putting the old valve back on is not easy. It has to be screwed onto the seat first. This makes it almost impossible to keep the gasket in place because as it tightens up it naturally pushes the gasket round. Plus, I can't see the point in then tightening the mounting bolts down because they are pushing against the threaded seat and will never make a proper seal.
Has anyone come accross this before?
Thanks, Liam
This is my first post. I have a 1980 Olds Omega Brougham X-body with a 2.8L VIN 7. This car was exported from the US to Europe for the European market in late '79 early '80. The underhood emissions decal shows a 'low altitude' setup.
I want to replace the EGR valve but am having a problem finding a match.
The EGR VALVE on the the motor is AFJ 17061104 (no 'P' or 'N' implying straight vacuum ported).
Standard match this with EGV349
Borg Warner with EGR934A
Tomco with style 30315
and KEM with 130237.
Now, I got the KEM replacement valve but can't fit it for the following reason:
The problem is that my valve is held on by two bolts top and bottom as normal but when I remove them the valve does not lift off. Instead I have to unscrew it to remove it. I mean the pintle seat appears to be part of the manifold and the valve centre hole threads onto it. So, after removing the valve I see a raised thread on the manifold and a correctly shaped seat inside that. Now, I can't see a seam and I don't want to damage the manifold. Is it my imagination, is the seat actually part of the manifold or is it just seized.
From what I can see the replacement valves do not have any seat let alone an internal thread to screw onto an existing seat, i.e. they are plain and fit flush with the manifold. In the case of the KEM replacement valve; one has to select a washer to go into the valve centre hole (washer diameter and thickness depending on the OEM valve number). This apparantely provides the correct gap arount the pintle. But where is the seat?
I am really confused. Another thing that gets me is that although my valve does not have a 'P' or an 'N' after the part number, which should imply that it is operated by ported vacuum from the TVS, nonetheless the pintle has hole at the side of it's tip which tells me that it is actually a backpressure valve.
Finally, putting the old valve back on is not easy. It has to be screwed onto the seat first. This makes it almost impossible to keep the gasket in place because as it tightens up it naturally pushes the gasket round. Plus, I can't see the point in then tightening the mounting bolts down because they are pushing against the threaded seat and will never make a proper seal.
Has anyone come accross this before?
Thanks, Liam
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