So i have an extra smog pump layin around... And I was thinking. It's purpose was to blow air right, or so circulate air. So what if someone were to say... put a smaller pulley on it so it blew harder... Hook up some bigger tubes... rebuild/get a new one to handle some stress... hook it up to some kinda kick on mechanizm... and run in from cold air to the intake to form a jerry rigged cetrifugal super? Bad Idea? I know theres something I'm not seeing with this plan that is potentially dangerous. I know they were not meant to build up pressure for boost. But would it help? Would it work? It would be an interesting mod.
Lubrication? CFM Output? Hot Rod Mag used 2 leaf blowers that did work sort of. How much output does a smog pump have?
I read about a guy that was going to use one as a supercharger for a small Briggs and Stratton mower motor. I don't think that it would have the cfm to do much more than that. I have one that I use for crankcase evacuation (these were specially modified by Ford for this application) as a vacuum pump.
I did just this on a 79 Jeep 6 banger. Routed the smog pump tube to the aircleaner. While it didn't feel like it did much, it did make me have to run midgrade fuel to kill the pinging that started after the mod. Smog pumps don't take much abuse to kill em though. I used one as a crankcase evac pump on a 5.0 and it didn't like being spun to 7500 rpms (and that was with the std pulley)
It is common to see smog pumps modified to run on small Briggs engines but they just don't move enough air to supercharge an automotive engine. What it will do is heat up what little air it does supply. If it was big enough to give you any boost you would need to richen your mixture to make up for the extra air - and modify your carb to make it work as a "blow-through" carb. You can get more power by adding a cold air supply to your engine and having dyno tuned.
well see i've got the 86 EFI from a mustang. I'm lookin for some good reliable mods. and maybe some fun ones too. Not no stupid ricer chips or resistors. Thought it was an idea. If it was cooled somehow, found someway to lube got bigger tubes and faster pulley for more CFM... I know it's a stretch. But to tinker. 4lbs safe boost for 100 bucks beats 15lbs safe boost for 2k if ya ask me...
You're not going to get 4 lbs boost from it. If you want an easy bolt on, try a set of Crane Energizer 1.7 full roller rockers. Ford found a 15 hp boost from that one mod alone on the 93 Cobra 5.0. Better headers than the factory tubular manifolds may help some, but not unless you take a die grinder and remove the Thermactor bumps from inside the exhaust ports. Replacing the 86's E6SE heads with E7TE's will also give you 25 horses, but if you do this you're limited to the stock HO cam as the pistons in your 86 motor lack the valve reliefs needed for bigger cams and valves
Okay so you led to a question i've been looking for an answer to. Will 1:7 rockers work without new pistons? How much play room? are they even dished? and the E7TE's what are thoses on? I have hedman 88300s. Thermactor bumps? i didn't notice any bumps when i had the headers off... So the smog/super idea is bad.
Not a bad idea MadCow. You were thinking outside the box, but it just doesn't have the volume. If people didn't think about things like this we would never progress.
Not sue if ebay still has this, 12 volt blower kit to "boost" intake charge. More volume and durable over smog pump, no proven hp gain
E7TE's were on all 5.0's in Mustangs, Pickups and Vans from 87-97. 1.7's will work fine on your motor and heads. They add .030 more lift at the valve and eliminate the friction at the fulcrum. The bumps are in there, about 3/4" inside the ports.
