Check Valve under Plenum - ZR-1 Net Registry Forums

Hammer · 08-17-2008

Is there a source for the correct check valve that goes under the plenum. I have a makeshift one on the new car now, but would like to replace the one under the plenum eventually.

Anyone have the GM Part Number for this? Couldn't find one separate in the parts listing from the Registry.

tomtom72 · 08-18-2008

I just looked on my parts CD and there is no listing for the check valve as a discrete part. I would have to say that it is included with the vacuum hose assembly as one relpacement part, ya know the hoses we all call the "secondary vacuum spyder".

Hammer · 08-18-2008

Quote:

Originally Posted by tomtom72

I just looked on my parts CD and there is no listing for the check valve as a discrete part. I would have to say that it is included with the vacuum hose assembly as one relpacement part, ya know the hoses we all call the "secondary vacuum spyder".

I found the same thing on the downloaded file from the Registry. I have to replace injectors and hope to find one when I do the replacement. I'll keep everyone posted on what I find. Someone has to make one right?

08-18-2008

John, you should be able to find the replacement at a local parts store. GM has a funky configuration for port size, so make sure you get the right one.

Hammer · 08-18-2008

Quote:

Originally Posted by Jeffvette

John, you should be able to find the replacement at a local parts store. GM has a funky configuration for port size, so make sure you get the right one.

Jeff, I am only coming up with a universal check valve that has a larger port on one side. i just contacted Dorman to see if they will give up their manufacturer to let me see if one is made.

08-18-2008

The GM check valve is larger on one side as well.

Hammer · 08-18-2008

I'll check that out in a bit. Thanks.

flyin ryan · 08-18-2008

i thought the one you need John is GM 00460734, but i have a few in the package & the nipple is the same size on both ends, approx. .1875" dia. so maybe this isn't the correct one

Hammer · 08-18-2008

Quote:

Originally Posted by flyin ryan

i thought the one you need John is GM 00460734, but i have a few in the package & the nipple is the same size on both ends, approx. .1875" dia. so maybe this isn't the correct one

That's the one. Looks like they are still available from the dealer under part number 460734, less than $5.

08-17-2008	#1
Hammer Join Date: Apr 2006 Location: Ideho Posts: 2,647	Check Valve under Plenum Is there a source for the correct check valve that goes under the plenum. I have a makeshift one on the new car now, but would like to replace the one under the plenum eventually. Anyone have the GM Part Number for this? Couldn't find one separate in the parts listing from the Registry.

08-18-2008	#2
tomtom72 Join Date: Dec 2004 Location: Jacksonville, FL USA Posts: 4,609	Re: Check Valve under Plenum I just looked on my parts CD and there is no listing for the check valve as a discrete part. I would have to say that it is included with the vacuum hose assembly as one relpacement part, ya know the hoses we all call the "secondary vacuum spyder". __________________ 1990 ZR-1, Black/grey, #2233, stock. ZR-1 Net Reg Founding Member #316 & NCM member

08-18-2008	#4
Jeffvette Guest Posts: n/a	Re: Check Valve under Plenum John, you should be able to find the replacement at a local parts store. GM has a funky configuration for port size, so make sure you get the right one.

08-18-2008	#6
Jeffvette Guest Posts: n/a	Re: Check Valve under Plenum The GM check valve is larger on one side as well.

08-18-2008	#7
Hammer Join Date: Apr 2006 Location: Ideho Posts: 2,647	Re: Check Valve under Plenum I'll check that out in a bit. Thanks.

08-18-2008	#8
flyin ryan Join Date: Aug 2006 Location: Edmonton, Alberta or Phoenix, Arizona Posts: 2,736	Re: Check Valve under Plenum i thought the one you need John is GM 00460734, but i have a few in the package & the nipple is the same size on both ends, approx. .1875" dia. so maybe this isn't the correct one