Vacuum

[Tony Dipatri]

Does anyone know whats gets hooked up to the large vacuum port on the back of the stock throttle body? Or does it get blocked off.

Thanks

 

[TNPhoon]

Re: Vacuum

It's been a while since I have seen a motor, but IIRC, I don't think a vac line connects anywhere into the back part of the TB?

 

[TNPhoon]

Re: Vacuum

http://www.sicid.com/vacuum_diagram.jpg

 

[Tony Dipatri]

Re: Vacuum

So im guessing it gets blocked off? Right now its open.

 

[SYO237]

Re: Vacuum

Does anyone know whats gets hooked up to the large vacuum port on the back of the stock throttle body? Or does it get blocked off.

Thanks

The port on the very bottom stays open. There are 2 other ports on the backside, the smaller of the 2 is the one for the PCV hose, and the other one should be capped.

The only actual vac port is on the bottom, to the front when you are looking at the engine bay....it connects to the charcoal canister and there is a check valve on it.

 

[Tony Dipatri]

Re: Vacuum

Right now its open. I think I read somewhere deep in a thread that it gets blocked off but I can find the thread again.

 

[Tony Dipatri]

Re: Vacuum

The port on the very bottom stays open. There are 2 other ports on the backside, the smaller of the 2 is the one for the PCV hose, and the other one should be capped.

Ok thanks

 

[teamvortec]

Re: Vacuum

The large port on the rear bottom is not used on these motors along with the large one on the front, close to the bottom front mounting bolt. These are actually in the base plate that bolts to the bottom of the throttle body. In other applications they were hooked up to coolant lines to help warm the throttle body. So they actually are not vacuum ports.

 

[Throws]

Re: Vacuum

The large port on the rear bottom is not used on these motors along with the large one on the front, close to the bottom front mounting bolt. These are actually in the base plate that bolts to the bottom of the throttle body. In other applications they were hooked up to coolant lines to help warm the throttle body. So they actually are not vacuum ports.

Exactly. Running coolant through the bodies warms it up enough to keep the blades from icing up.

-P

 

[Tony Dipatri]

Re: Vacuum

Thank you for the replies.

I thought I was on to something

Back to the drawing board

 

[blackty]

Re: Vacuum

Tony, this may help...Jim
http://www.syty.net/forums/showthread.php?t=3045&highlight=throttle+body+vacuum+lines

 

[autoaddictions]

Re: Vacuum

Flippin NEWBS!!!!