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I have stock heads. Have been looking at aluminum heads, but there are lots of options and are they worth the $$ on a year 93 302 motor?? Or might it be more prudent to go with a 351w motor or maybe a 302 turbo set up? For now I’ll stick with stock heads and get it running good. It’s for street driving and maybe a little autocross in future.
Correct -- I meant to identify that the Brake Booster port feeds off/to the vacuum manifold which is mounted on the firewall. I want to make sure that the other ports should be blocked off.
Not all can be blocked off. You still need vacuum for the fuel pressure regulator and PCV valve at a minimum.
The thing with explorer intakes is that there were 3 different versions of the upper and 3 different vac line setups. I put together the below to try and come up with a way to hook it up as close to factory stock as possible. That meant pulling the existing vac ports out and drill/tap for NPT and installing hose barbs.
That is a very helpful photo, thank you. Should I conclude that rather than pull the vacuum for the fuel regulator off the port to the right (as noted in my pic in the previous post #25), the best/better approach is to tap the explorer manifold larger port to the left with the 3/8 NPT so I can have vacuum run from that 3/8 NPT fitting to both the firewall and the fuel pump, i.e., so it will match the location of the original mustang vacuum tube as noted in the vacuum port arrow in the below picture?
Are you running the EGR? If not, then you do not need to install the vac tree as you have the appropriate number of vacuum ports at the rear. At that point it's really you decision if you want to leave the ports as is, or install the OEM vac tree.
The fuel pressure regulator and charcoal canister should have their own dedicated vac port. That would be the capped port in the front on your above pic where the MC2 is located. The uncapped port at the rear (where MC2 is) would connect to the MAP sensor on the 86-88 Speed density cars. On your 93 this is also capped.
SO really the first question to ask is what vac ports do you need? Fuel pressure and the brake booster source are the two main ones. But do you also need the EGR and charcoal canister?
The PCV routing is already correct on your manifold. And the two lines that are capped where the PCV line goes into the "throat" are actually coolant lines.
The fuel pressure regulator and charcoal canister should have their own dedicated vac port. That would be the capped port in the front on your above pic where the MC2 is located. The uncapped port at the rear (where MC2 is) would connect to the MAP sensor on the 86-88 Speed density cars. On your 93 this is also capped.
SO really the first question to ask is what vac ports do you need? Fuel pressure and the brake booster source are the two main ones. But do you also need the EGR and charcoal canister?
The PCV routing is already correct on your manifold. And the two lines that are capped where the PCV line goes into the "throat" are actually coolant lines.
Correct, I have no EGR hooked up at all and I'm not going to try to hook it up at this point. So I can hook up off the ports to the booster and fuel regulator as in my original #25 post photo and it should work fine -- this is what I wanted to confirm. I really didn't want to tap the 3/8 NPT port to screw in the vac tree.
Is there any significant benefit to hooking up the coolant lines near the PCV port? The OEM Ford Mustang manifold did not have those lines.