lousypirate Posted May 7, 2009 Share Posted May 7, 2009 I picked up a second intake manifold off of what i think is an older impreza, looks exactly the same except that the piece in between the intake manifold and the actual heads is one piece in this one, i was wondering what the best way to go about smoothing out the whole interior piece for better flow, i intend on doing a little bit of porting so they match up to the heads as best as possible, but there's the problem of getting all the way up to the bends in the casting. Just looking if anyone has any ideas. I intend on polishing up the whole exterior smooth and painting it with probably some black enamel (don't wanna pay for chrome or powdercoating) and picked up a spare alternator for cheap that i might crack apart and do a little custom painting on that too Just a little dress up on 'er. Link to comment Share on other sites More sharing options...
smushybrain Posted May 7, 2009 Share Posted May 7, 2009 I'm not sure of any DIY way to get all the way up into the bends. Most DIY intake porting and polishing is usually done by putting the gasket in the correct place, outlining it, removing it and then grinding and smoothing the material away right up to the edge of where the gasket goes and smoothing the surface into the ports as far as you can go. Maybe get some sort of a flexible extension for your die grinder... Porting is probably only really helpful on the intake side if you can do the heads to match... otherwise the heads are going to be a bottleneck. Link to comment Share on other sites More sharing options...
lousypirate Posted May 7, 2009 Author Share Posted May 7, 2009 I'm not sure of any DIY way to get all the way up into the bends. Most DIY intake porting and polishing is usually done by putting the gasket in the correct place, outlining it, removing it and then grinding and smoothing the material away right up to the edge of where the gasket goes and smoothing the surface into the ports as far as you can go. Maybe get some sort of a flexible extension for your die grinder... Porting is probably only really helpful on the intake side if you can do the heads to match... otherwise the heads are going to be a bottleneck. yeah i understand that, i'm more just trying to get it as smooth as possible for the best flow with as little restriction as possible, especially since it'd be a spare intake manifold essentially. I'd probably clean up the intake ports on the head real nice before i put the next one on anyways and clean everything up as much as possible. My biggest problem will be being able to get into all of the nooks and crannys, and does anyone know why that tube it sticking up in the middle a little over halfway on the intake manifold? I'm unsure of what it is. Link to comment Share on other sites More sharing options...
GEE-OTTO Posted May 7, 2009 Share Posted May 7, 2009 yeah i understand that, i'm more just trying to get it as smooth as possible for the best flow with as little restriction as possible, especially since it'd be a spare intake manifold essentially. I'd probably clean up the intake ports on the head real nice before i put the next one on anyways and clean everything up as much as possible. My biggest problem will be being able to get into all of the nooks and crannys, and does anyone know why that tube it sticking up in the middle a little over halfway on the intake manifold? I'm unsure of what it is. that is gonna be a tricky one you would almost need a honning head but smaller like the type used for cylinder heads Link to comment Share on other sites More sharing options...
lousypirate Posted May 7, 2009 Author Share Posted May 7, 2009 i'm gonna head to the hardware store tonight or tomorrow hopefully and see if i can find something that might work... Link to comment Share on other sites More sharing options...
JayMitch2.5i Posted May 19, 2009 Share Posted May 19, 2009 Where you able to do any thing with the intake? Link to comment Share on other sites More sharing options...
lousypirate Posted May 20, 2009 Author Share Posted May 20, 2009 Where you able to do any thing with the intake? I'm actually going to start this afternoon, run and pick up some bits for a dremel tool... didn't realize one of my buddies here at college has a dremel tool, i was gonna gank one from home, but now since i don't have to do that, i'll start today and see where it gets mean, i wanna clean up the whole outside and make it smooth for some high heat paint and clean up the inside for best air flow... gotta pick up a new gasket from the subie dealership by my house for between the head and manifold though Link to comment Share on other sites More sharing options...
frostbite3360 Posted May 20, 2009 Share Posted May 20, 2009 Yeah, a dremel will work pretty good. Make sure you get some sandpaper to smooth everything all out. I did that with my intake manifold and painted it red. Looks real good I'd say. Link to comment Share on other sites More sharing options...
seanrose Posted May 25, 2009 Share Posted May 25, 2009 the ej253 manifolds flows better. alot of the guys on rs25 and nasioc switch to them. just pnp your stock mannifold Link to comment Share on other sites More sharing options...
Pawlwawl06 Posted May 25, 2009 Share Posted May 25, 2009 ^^^this. +1. Link to comment Share on other sites More sharing options...
lousypirate Posted May 26, 2009 Author Share Posted May 26, 2009 the ej253 manifolds flows better. alot of the guys on rs25 and nasioc switch to them. just pnp your stock mannifold the one i picked up is the exact same as on my 2.5i except that it is one piece instead of two. Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.