Engine What are these.

[Vikingone]

I’m going to be installing a Weber carb onto my 2.5 liter. I’m wondering what these two components are and can they be removed.

I’m trying to clean up the plethora of vacuum lines. Most of which aren’t connected to anything.


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[RiverandSand]

Pic 1 is the EGR (exhaust gas recirculation valve) Pic 2 is a thermal vacuum switch, controls the egr, distro and other devices which need vacuum. Mostly these are related to smog equipment. If you have smog laws and tests in your area, those items must remain.

 

[Vikingone]

Pic 1 is the EGR (exhaust gas recirculation valve) Pic 2 is a thermal vacuum switch, controls the egr, distro and other devices which need vacuum. Mostly these are related to smog equipment. If you have smog laws and tests in your area, those items must remain.

No smog laws in Florida. Looking to do a nutter bypass on a 2.5 too


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[yellow85cj]

Top is EGR valve. Really no reason to remove it. If you do remove it, you will have to make a plate to cover the hole. Just take the vac hose of.

Bottom is CTO valve. Again, no real reason to pull it. Just remove the vac hose.

Go here for what does what. Check EGR valve on the list and EGR system CTO valve.
https://gleebledorf.com/list.html

 

[Belizean]

Do as yellow85cj said, worked for me.

 

[Vikingone]

Top is EGR valve. Really no reason to remove it. If you do remove it, you will have to make a plate to cover the hole. Just take the vac hose of.

Bottom is CTO valve. Again, no real reason to pull it. Just remove the vac hose.

Go here for what does what. Check EGR valve on the list and EGR system CTO valve.
https://gleebledorf.com/list.html

So disconnecting the vacuum hoses is rendering them virtually useless correct? If so....if I’m looking to clean things up aesthetically I could in theory remove them and put the plate over the egr and plug the CTO correct?


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[yellow85cj]

Yes. I can't remember if the CTO valve is wet or not. Might not need a plug on the CTO valve.

What i mean by wet is that the CTO hole goes all the way through to coolant. Pretty sure it's not but have to check to be sure.

Maybe someone else has a better memory.

 

[Posi]

Yes. I can't remember if the CTO valve is wet or not. Might not need a plug on the CTO valve.

What i mean by wet is that the CTO hole goes all the way through to coolant. Pretty sure it's not but have to check to be sure.

Maybe someone else has a better memory.

CTO valve and/or CTO combination valve is located in
the coolant passage.

 

[Vikingone]

CTO valve and/or CTO combination valve is located in
the coolant passage.

Any chance you know the thread


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[Posi]

Any chance you know the thread


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NPT 3/8"-18

Some CTO valves come in NPT 1/2" -14 but that should be obvious.

 

[Scout1067]

Pic 1 is the EGR (exhaust gas recirculation valve) Pic 2 is a thermal vacuum switch, controls the egr, distro and other devices which need vacuum. Mostly these are related to smog equipment. If you have smog laws and tests in your area, those items must remain.

What he said, you need em for the Weber too

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