i cant get into welding and all that stuff but ive heard of people smoothing out the humps and shit in the stock manifold. how i cant remember but i could swore it was possible.

 

dremel

 

A dremel won't allow you to reach everywhere and it is a pain. However, there are shops who have, i can't remember the name, a machine that shoots an abrasive paste in the manifold. It's pressurised. After a few pass, the manifold is a mirror. However, is isn't cheap.

 

take it to a machine shop.

they will know, and shouldn't charge much to 'port' a throttle body just a tad if it's stock. even if you just polish it (which is just smoothing it out - weather it's polished or not), i know they have some kinds of phased out sandblasting and then full on porting that can get ridiculously accurate. it was never expensive for me to get heads shaved and bored because i used to know someone at a machine shop....... so i'm not sure how expensive that stuff is normally.

if you go to that much trouble though, you might as well get a new one. lol.gif

*gulp gulp* don't mind me..... *puff puff*, i'm workin' on a buzz wink.gif

 

the abrasive paste you are talking about is a company called "extrude hone" and it is not a paste, but a form of silly putty.

For those that want to know, Silly Putty, while a solid, moves and acts like a liquid. When put under pressure, it will find the nearest and fastest route to escape... when the abrasive is added, it will remove any material that does not allow it to escape smoothly. What this means, it will remove a ridge or an obstruction from the head, but it ill not touch the valve seats...

It is really cool stuff!

 

ALthough trying to make your own manifold is a cool idea and all, you have almost NO chance of making it flow decently. Smooth corners and such.

Ever looked at the inside of the Airram IM? WOW.

Look at the design from the outside too. It's made to get equal pressure and volume into all 4 runners at once.

 

<div class='quotetop'>QUOTE (REDZMAN)</div><div class='quotemain'>ALthough trying to make your own manifold is a cool idea and all, you have almost NO chance of making it flow decently. Smooth corners and such.

Ever looked at the inside of the Airram IM? WOW.

Look at the design from the outside too. It's made to get equal pressure and volume into all 4 runners at once.</div>

Ever looked inside mine wink.gif
I know that the Airram is better, but for the difference versus the cost (400US$ difference)....Anyways, I wanted an improvement and a big improvement I got.

Now, how can you say that there is no change of making a decent flow?
To have a good flow, you need a smooth surface and an angle to allow the air to distribute evenly (which my IM has wink.gif )...Over stock, my IM is way better. Over the Airram, let's say that there is still some work to be done. But to say that the flow is crappy, that is a very long shot...especially coming from a person who hasn't look inside of it:wink:

 

my buddy has an air ram manifold sittin in her garadge maybe i'll buy it off him. last time we put it on his car we couldnt get everything to fit though. like the air idle control was in a different spot etc.. but other then that it bolted right up exact. is there any torque loss with the manifold?

 

<div class='quotetop'>QUOTE (LarryMcFly)</div><div class='quotemain'>Ever looked inside mine wink.gif ...</div>

Heh heh heh.

No.


<div class='quotetop'>QUOTE </div><div class='quotemain'>Now, how can you say that there is no change of making a decent flow?
To have a good flow, you need a smooth surface and an angle to allow the air to distribute evenly (which my IM has wink.gif )...Over stock, my IM is way better.</div>

There isn't. Unless you CAD design something or have the material to cast the items, you just can't. Look at yours from the outside. Again, I applaud you for doing some custom work, and I'm glad you got gains. I'd suspect most of your gains are from less restriction. That's it. But flow? No man. There are no smooth runs into your runners. You have an equal lenght upper IM cavity all the way across so your runners are NOT getting equal air distribution.

Smooth surface isn't everything, and the Jury is still out on that, some folks say you want turbulent air in there. Not me, but some folks. I agree, your IM is probably less restrictive than the stock IM. Again, I told you the first time you posted about it that I was proud and impressed.

<div class='quotetop'>QUOTE (focushunter)</div><div class='quotemain'>my buddy has an air ram manifold sittin in her garadge maybe i'll buy it off him. last time we put it on his car we couldnt get everything to fit though. like the air idle control was in a different spot etc.. but other then that it bolted right up exact. is there any torque loss with the manifold?</div>

In HER garage? I didn't think we sold any to a Female during our GB. Kick ass though. Tell her to put it on. While yes, the Airram IM is a bolt on, no, not everything lines up the same. Stuff gets mounted a bit different, but it will all hook up.

Torque Loss?

HELL no.

On a mostly stock 99 Elantra with some MAJOR engine problems, he dyno'd at 4 HP and 14 Ft. LBS of torque gain. Again, with MAJOR problems.

 

LOL i ment him haha. but ya you can imagine a big boobed blonde putting on the air ram manifold if ya like. lol.gif