rico05

I want to port my intake manifold and I need a template to lay over it and dremel away! I read several posts where guys have done this for higher horse power, and I would like to try it! Can't be too hard!

shadyteke

www.mazdatrix.com

They have templates. Not sure if there for what you need or not.

supergoat

Template? TEMPLATE?? You don't need no stinkin' template!

Just "grip it and rip it". Porting doesn't require a template or anything. Just some common sense and know-how. I have successfully ported many manifolds for many different cars. Never once did I need a template or anything.

FPrep2ndGenRX7

If your porting the intate manifolds the intake gasket itself is good to have. You can port match using the gasket as you guide or increase the size of the runners on the gasket and then match your ports to it again. If you don't do that to start with you'll have to do it when your through bacause your gasket will be to small at that point.

EProdRx7

if you are just porting the manifold use the gasket as a template. The real benifit will come from matching the manifold to the intake ports on the motor housings. DO NOT DO THIS IF YOU ARE NOT TAKING THE MOTOR APART!!!! You must dissasemble the motor to do any porting on the block. Filings will get into the motor and ruin it.

dcamcoTII

How safe is it for the turbo to port a wastegate?? Is there any risk of crap getting in the turbo and screwing things up??

rico05

Can't you just pull the manifold and start grinding away? Why do I have to leave it in place? I have NEVER done this kind of thing before, and I am too cheap to spen $400 for Rotary Performance to do it for me! Expalin the process to this retard!

tesla042

totally.. you may want to get the gaskets ahead of time tho..

Pull off the intake pipes, then the TB, then the dynamic chamber, then the upper intake manifold. If you want, you can remove the lower intake manifold also to port it, but it has a lot of crazy lines attached to it (oil injection, namely)

But yeah.. rip it out, get a good dremel bit designed to cut aluminium, and go to town. Some sanding dremel bits would be a good idea to make it smooth when you're done..

-Tesla

rico05

So this can be done in a weekend right? All I need to do is get the upper manifold off, and all the stuff like TB and stuff, and port away? How much HP or throttle response increase should I expect? She be a 91 N/A!

niner

yeah it can be done in a weekend. get the gaskets ahead of time if it has not been dissassembled before or hasnt been in a long time. i think i'll be doing this myself as well over xmas break. i should have done it when i rebuilt the motor but i was on a time schedule. i think it will probably give a noticible throttle response and a little increase in power.
just make sure to label everything so that you can put it all back together with ease
i will also be removing my 5th and 6th port sleeves, since ive already got them wired and i dont think it will hurt me at all w/ my other mods.

good luck w/ it.
mike

turboren

Port-matching using the gasket as a template may incease power and throttle response, but be careful not to hog out the porta or runners. Opening them up too far will result in decreased throttle response, and poor drivability, from redoced port velocity.

Ren