What is the 2nd coolant inlet for on the lower part of the manifold? Does anyone know. I think I'm gonna call Skunk2 if not. I'm completely mind boggled over it. Please help. I know Skunk2 probobly won't give me a goo answer.
my JRSC intake manifold had the same thing, except they told me to plug it b/c it was supposed to supply coolant to something that older cars had; but in newer makes they got their coolant from elsewhere. i could find my install manual, but with a 98, you're after the change, so you're probably supposed to plug it.
yep, just looked at my JRSC manual... 98-00 models plug the 1/8" oolant hole near the #4 cylinder.
on the older cars it goes to the coolant fitting on the fast idle valve. on the newer models, the fast idle valve gets coolant from the barb near the distributor.
i'm pretty sure it flows out. on my IM, it was a 1/8" pipe fitting, and they supplied the barb to screw in for older models, and the plug to screw in for newer models. if your's is a threaded hole, you could do the same, but if it's a hose barb you can do an old trick where you put a small piece of hose on the barb, and the other end screw in a bolt or screw, and clamp down both ends with some screw-type hose clamps, and keep an eye on it for leaking. it's usually a good strong fix, especially if the bolt or screw has a tight fit.