just thought i'd post some pics of something i started on a few years ago, wouldn't take much time but it wasn't much of a priority. the prices of buying new throttle bodies is rediculous, they are very easy to make but i wanted to explore the possibilities of the stock tb.

i started with the idea of making a 52mm like has been done many times before but got to thinking, why stop there?
sure 52mm is the max OD but why not go monoblade? the only bad thing i could see is setup. it's hard to clamp on a tb like that, once you cut the middle out there goes alot of the structure for your easy clamping spot. so i was very careful on my machining.

did this using a cnc at my old job, using the centers of the stock bores i opened them to 52mm and connected the tangents of both bores. i use an edm machine to make some blades up and i was in bussiness.

it took some filling work using epoxy, which should have been done before machining.and some touchup work, had to chase the threads in the bottom plate and redrill two holes for the stock IAC to work with.

here's what i ended up with.





yeah, i'm cheap but it puts more into the sleeper effect, not that a camaro's really a sleeper but it keeps stock appearance, unlike my fuel system, lol.

 

oh yeah, upon installation i noticed something else, under the top plastic plate is now a nice 1/2 hole that leads behind the blade, it would be super easy to make a plate up to bolt on top to screw in a nitrous nozzle. i'll post pics once i'm done..

 

No reason why it should not work. Good job. Yes it will have a big sleeper effect. That is something a lot of have thought about.

 

Did I understand your second post correctly? Are you saying the vent line from the passenger side valve cover is now being fed manifold vacuum by the 1/2" hole under the plastic cover, routed BEHIND (manifold side?) the blades? That port is supposed to be exposed to the slightly negative pressure conditions that exist in FRONT of the blades.

If you have full manifold vacuum drawing on the vent line from the valve cover, you will possibly entrain excessive amounts of oil. Of course, if you have deleted that line, it becomes a moot point.

 

yeah, i'm gonna have to change that.

 

This is a pretty good idea. Is this something that you would consider selling?

 

not really, i can't take responsibility for some epoxy coming loose and going into your engine, i have extra blades though. besides i'd rather run it for awhile first and make sure theres nothing else i missed.

still not sure if i'm gonna have to add air bleed holes through the blade.

thanks injuneer for catching that though. i think i'll be fine if i drill another hole in there and seal around the nitrous nozzle.