Swirl Control Valve (SCV)

[AbusedJalopy]

About half a year back, we decided to replace our 3A since we had destroyed ours rebuilding it, multiple times (long story). We found a replacement 3A crated motor that had "87 Corolla" written on it, although the junk yard may have just guessed. Anyways, the engine is labeled as a 3A-SCV, or swirl control valve that controls intake velocities via a shutter that closes at low throttle/rpm and opens up at high throttle/rpm which increases low end power. The problem is, we don't know where it hooks up. I haven't been able to find any manual for where it goes. Basically, it works by beeing closed at high vacuum, open at no vacuum, so I was thinking of just running it somewhere into the intake manifold. There is a definate increase in low end because hooking the valve up to a manual vacuum tester at idle speeds the engine up considerably. Hopefully, someone else has some information on this? Even google turns up nothing.

[Lateer]

Can't you use that as a parts motor for your other 3A?
And wouldn't the manifolds and all that jazz line up, so that all you have to do is drop the new block and head in?

At least, that's the way I'd do it.

[AbusedJalopy]

Wait, maybe I wrote that in a confusing way. I ment the 3A-C SCV engine is in the car right now. It runs exactly like a regular 3A without the vacuum hose connected to control the SCV, but I was wondering if anyone knew where I could find a diagram for it to hook it up so I get a little more performance and efficiency.

[Lateer]

I'd pick a vacuum line, I guess.

I can't see any problem with simply splicing a joint into one of the other vacuum lines and using that....

[3A-C Power]

It sounds like a Japanese motor that you have.