Carb ports confuse me because some are above the throttle butterfly and some are below. If they were all below, if you were missing one you could just go off the manifold. And you can always drill and tap one onto the manifold.
1987 was a big vacuum year for Toyota. Which really complicated things regarding carburetors. When I got the Weber I figured It was an opportunity to reduce the hose layout, but now I wish I’d kept the EGR stuff, as I’ve read it actually increases mileage, by burning more oxygen or something from the exhaust.
It is running pretty good now and I’m hoping by just putting new springs in it will be even better. I found the 2014 receipt from the machine shop that rebuilt the head, it didn’t include replacing the springs. Which was probably my decision.

 

It’s got 306,000 on it so the springs might have 306,000

 

I've run in to a few people who blocked off the EGR and their mileage increased, like up to 28 mpg. I blocked mine off but didn't notice a difference either way. I run with the original camper top so I think with the added weight I'm disadvantaged.

 

Count me among those who have disabled the egr with no improvement in fuel economy. Only a small improvement in responsiveness when the egr would be open.

per the old TRD white paper I purchased in the 1990’s, just block the vac line with a BB, rendering it inoperable.

 

White paper?

 

I hated dealing with TRD. Their stuff was ok, but as a company they were a huge p.i.t.a.

 

i'm a believer in the egr, in part to pass smog testing :-/ but it contributes to some(much?) of the junk accumulating in the plenum, including in that long narrow passageway from where it hooks up at the back of the plenum.

after having to use oven cleaner and whatnot to only partially clean out a 22re plenum, i really don't want to do it again someday, people wanting to dump the egr is understandable.

 

Are you asking, “what is a white paper?”

A white paper is a technical document written by a subject matter expert and made available to interested parties, free or for a fee.