How To remove And Port A Mazdaspeed Manifold

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hey guys It was my first time trying to port and polish my stock intake manifold. it took forever but i think was well worth it. If you have any questions leave a comment. please like and subscibe.
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[@MrSunnYaj]

This is gonna help me a lot, been so mind fcked trying to put on my injector seals. Nice MS6 btw. I'm still putting in work on mine. :)

[@StevenDevey]

Sunny Master it's always a lot of work! And I was trying to show everything!

[@dimascarlos74]

Do you have to take the manifold to change your starter

[@tandreu2020]

Can you do the same with a 07 cx7?

[@joecitizen381]

I'm getting ready to do this to my speed 6, but I'm buying a used intake so no down time. I do have a question regarding the head to intake gasket; how does the head compare to the intake as far as gasket vs port size. Does the head have the same amount of material that could be removed as the intake to port match or less material? Any info is helpful.

[@StevenDevey]

Dylan Handler I think the head could definitely be ported but it is pretty smooth so you don't need to port it until you get to like 550 plus horsepower

[@pingpong9656]

How did you clean the gasket surface - figure out any good trick to speed it up ?

[@StevenDevey]

Using an air grinder speeds it up. But I just clean the surface up with hot soapy water. I didn’t grind the surface or anything

[@pingpong9656]

@@StevenDevey Not even razor blade? Soap and water almost sounds impossible given how tough that black paint they put on intake gaskets is to get off...

[@StevenDevey]

@@pingpong9656 I’m not sure what’s you are asking? For the intake manifold or the block? But either way a razor blade is good maybe some rubbing alcohol

[@biggs85]

Hey man, I know this vid was made awhile ago but I was wondering if you could give some insight on what you learned from doing this? I was going to have the machine shop port and polish my intake manifold, exhaust manifold, and head but then I noticed the VTCS (butterfly valves). Did you see any performance gains from this? Did you start to have rough cold startups? Did you lose any low end power? Thanks in advance.

[@StevenDevey]

Michael Cecy hey the butterfly valves are good to delete. No rough starts or issues. It will have a slight different sound. It helps for gas mileage and power. I would not port your exhaust manifold. It flows good stock. I would recommend porting the intake manifold yourself. It’s easy and cheap. The head is easy too but takes longer! Hopefully this helps. Let me know what other questions you have

[@biggs85]

Gotcha, did you fill in the holes left from the VTCS shaft or just leave them open?

[@StevenDevey]

Michael Cecy leave them open. You have to fill some holes on top tho

[@hankhilll4651]

@@StevenDevey what holes? I thought there was only 1

[@StevenDevey]

@@hankhilll4651 there are holes inside the runners. You’ll see when you pull it apart

[@numinous4789]

CS just released theirs. IMHO, it's by far the best option, all things considered. Though you will have CELs.

[@StevenDevey]

Numinous it's definitely a great option, I haven't looked into it to much, but it looks awesome

[@numinous4789]

It'll easily support 550whp too, so that's a great power cap. Now if you want to go 700-800+, then you pretty much have to go JMF (or equivalent, like 16w Fabworks). But IMHO, 500whp is PLENTY for this platform, especially for competitive driving. Even that level of power necessitates having a solid suspension setup to retain chassis responsiveness and not overwhelming the platform/drivetrain layout. Heck, I'm only at 390whp, and I run custom GC coilovers with 375 lbs/in front springs and 430 lbs/in rear springs. Having an overall well-balanced setup is the key. AND DON'T NEGLECT YOUR BRAKING SYSTEM! LOL. If you more than double or even triple your stock whp, you DEFINITELY need to address braking.

[@themotocrossmodchannelWulfMX]

I own and operate a engine design, modification, and performance shop for motorcycle racing engines..The "gasket match" mod you did may help but you need to make sure that the gasket matches the engine side as well or you just made less power for your engine...There are designed "choke" points in engine design that are supposed to be there and the texture and finish of the inner surfaces would have far better been served to be made "rough" and non conforming texture. The "polish" part of the intake is also making less power now as the polished surfaces tend to "puddle" charge mixtures and yes on a dyno make less power. Im not ragging on your at all, I commend you for diving into the engine and trying to tweak it out but I would read up on A. Graham Bell's research on engine tuning, porting, etc, typically parts of the engine that see burt carbon,(head, exh ports, etc) will get polished to reduce carbon build up and anything that sees fresh fuel gets rough treatment so the fuel doesnt puddle, atomizes more effeciently, and creates more surface area for the flow to ride on. In any case, read up, lots of info out there.

[@princesssolace4337]

@@themotocrossmodchannelWulfMX How will the intake manifold get puddle up when the fuel is injected straight into the combustion chamber? Its a direct injection engine.

[@mattykinzisland6571]

This is absolutely pointless unless you gasket matched your head. Cause now the incoming high velocity air is hitting a flat wall causing extreame turbulence far worse if you would have left it alone. Removing the valve is a good idea. Also your supposed to us a high speed die grinder with a non ferrous long shank bits so you can blend everything in to create velocity.

[@StevenDevey]

matthew balciar hey brotha thanks for pointing this out. I’ll have to do another vid porting the head to match!

[@ivanshinoda]

Not 100% true since the stock MS3 manifold has design flaws and doing this will make the air flow more even in the 4 runners.

[@svenu8664]

" I think it's called the egr" I have no idea what it does, but I read on msf that I should delete it. Lol.. bro, 'e' for effort, but you just looked at stuff and said, uh, yeah, you gotta take that off, and that.. and that also. The point is received, but the ' how to' part sucked. Keep going on modding the car!!

[@toywrench1]

I came here to find the bolt I missed. This did not help. Also the lighting is really bad. The EGR pipe is not for evaporative emissions. It is exhaust gas recirculation... egr. So it recirculates exhaust back thru the intake. I personally would not have taken off an intake to port and polish. The ports on the head and intake should match up. Not only that but there is no way to know if you are helping or hurting horsepower. Small runners give low end torque and air velocity for throttle responsiveness. This is needed when you have a turbo due to turbo lag. There is a lot of science in designing and modifying runners. Study of this would show how it should not be changed willy nilly (randomly). Also rough runners are made in purpose.