Where do you stick the vacuum return line for a vented opti in a pre-95 car? I'm upgrading to the vented opti in my cam swap, and the line to the intake elbow can be taken care of, but where do I stick the exhaust/return line?

 

http://shbox.com/1/opti_vacuum_conn.jpg

 

Tee off one of your other connections (like EGR).

 

I guess the method on the pic won't work then.

 

Can i just vent it into the atmosphere?

 

The way it works is that one hose goes to the intake elbow to supply filtered air. That air is pulled through the opti by virtue of the vaccum hose connected to the intake. So, that is how it needs to be to be of any use.

Make sure you have the correct hose with the filter/flow reducer and backflow valves when connection to vacuum. If those are not in there, you can wipe out your opti with too much vacuum.

 

Will the hose fit on the hole for the EGR solenoid? I'm taking that off during the swap. If not, im just plugging both holes in the opti

 

I didn't know that was possible...LOL, so taking our cars to the moon is out of the question?

BTW: more useful info crammed into my brain. Thanks shoe...lol

 

Yes, that would be perfect. It is the very same size.


Scooby, you know LT1's don't belong on the moon! Of course, I have never seen the way you drive.

 

tee off of EGR vacuum connection

 

okay I been looking to see if that blue filter is reallt needed but mine seems like it is awfull hard to blow through and doesnt seem to let much through is this normal and what else could I use instead?

 

Any other spots you can easily utilize the intake vaccum from? I havent had the EGR for a while and obviously a 94 intake. Hmm...which part is the solenoid? Is it the small cubical thing on the drivers side near the rear and the fuel lines? Would I use the male plug its using on the intake? Just wondering... thanks guys.

EDIT: On the shoebox linked pic above. Could I just pull off the "to EGR solenoid" thing and plug on my opti vaccum?

What do ya say Mr. Shoebox?

-Dustin-

 

Just use the little fitting coming out of the side of the manifold that normally would have the vacuum hose going to your EGR solenoid. Very easy.

http://shbox.com/1/egr1.jpg

 

Thanks a ton shoebox. I owe you one I was prayin' you'd help me out. I cant thank you enough, I really wanted to start the car tonight. Now to set the rockers, plug in the opti, and its lope time in the neighbor hood.

-Dustin-

 

Which end of the hose are you blowing into? There are two discs in the vacuum line - one is a filter and one is a check valve. You need to keep them both.