EGR valve 1974 Z28 - Standard EGV311

Ricks72Z28

Veteran Member
Lifetime Gold Member
Jan 1, 2005
1,579
Unfortunately the only ones I have are the 7041409 ones….the application is L48 motors
 

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1959Buick

New Member
Oct 1, 2019
20
The EGR was designed to keep the Cat cooler. They always break , You need more gas. Cleaner engine. Scotty Kilmer explains it



Scotty Kilmer

 
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zfool

Veteran Member
May 19, 2014
702
Rochester, MN
Damn there was just a nice one for a 73 that was dated 72 on eBay a few weeks ago. It had been listed for awhile. 135$ but nice cadmium yet.
 

BillyDean7173

Final Six
May 21, 2014
3,374
Hutto, TX
Damn there was just a nice one for a 73 that was dated 72 on eBay a few weeks ago. It had been listed for awhile. 135$ but nice cadmium yet.
I watched that one for several years just to see if it would sell. I guess someone finally realized the price wasn't coming down. Funny the seller didn't mention it was for a 4-speed.

 

zfool

Veteran Member
May 19, 2014
702
Rochester, MN
I watched that one for several years just to see if it would sell. I guess someone finally realized the price wasn't coming down. Funny the seller didn't mention it was for a 4-speed.

I thought that was strange as well.
 

younda

Veteran Member
Jun 26, 2015
239
MA USA
There has been some good information posted and I'll probably end up installing the EGR without a washer to see how it runs and then install again with the port blocked. It makes sense that the engine would run cleaner with the port blocked as long as it runs ok without overheating or pinging.

Below is correspondence until they (Standard) stopped caring to respond. I'm posting this for follow up and for future reference.

Sent: Tuesday, June 14, 2022 4:28 PM
To: Customer Claims
This Standard part EGV311 is listed as the correct part for my 1974 Z28 and the instruction sheet includes the correct GM part # 7041413 which requires the orifice washer number 67. The part comes with only 7 washers and not #67 (or 13 others listed). I’ve contacted Standard customer support several times and everyone seems nice enough with multiple promises to help me but I’m not getting anywhere. One person sent me another washer pack but it included the same 7 washers. Another person sent me a second EGV valve and it too included the same 7 washers. It seems this could be a problem for many other buyers also since there’s a total of 14 washer numbers listed that are not included. Can someone please get information on the required home size for washer #67?


On Jun 15, 2022, at 8:40 AM, Customer Claims
Good Morning,
After a lot of involvement with engineers and product managers for this item (past and present), we’ve come to the conclusion that this EGR Valve did not come with a .67 Washer in its orifice kit. Early Engineering drawings indicate this. We are sorry for the inconvenience.


On Jun 15, 2022, at 9:53 AM,
What does this mean for installation - do I use another washer?


On Jun 15, 2022, at 10:24 AM, Customer Claims
I would advise to have a washer machined to your specification or source one online. You can also use the largest size that is present within the supplied set of washers and that can work. I am really sorry for the inconvenience. The documentation for this item is nearly 50 years old and heavily archived. I wish I can easily tell you the dimensions of such an item.


On Jun 15, 2022, at 9:04 PM,
I appreciate your effort and honesty but how do I fabricate one to my specification when I don’t know what it should be? Drilling out a washer would be easy enough but I don’t know the size to drill.

On Jun 17, 2022, at 8:53 AM,

Well I guess you’re done with me but regardless of when the product was designed, you are currently selling the part in 2022, I assume for profit, and providing inaccurate documentation and installation instructions.
 
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