MAPerformance: Cylinder Head R&D | 7/6/15: Valvetrain Upgrade info posted!

punxnotdead185 said:

Found a pic I forgot I took, you can see my scribe line where it was brought out to from stock.

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Yeah I think I am going to be broke very shortly...

Cars_1959 said:

I've been wondering who would do this as a mod for a few weeks now.

HP and torque increases should come after a tune, I'd think. Depending on how the stock heads are from the factory we could see nice increases across the power curves.

Questions: how much for the heads and what is the typical cost for doing the replacement for us non DIY? Cost to benefit:shrug:

Oh yeah, Dyno results before and after on a stock GT would be helpful

Sweet OTC mod idea:cheers:

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Sorry boss, you are in an Ecoboost 2.3L Section. However we would be open to porting 2015+ GT heads as well if anybody would like to send in their heads to get done. We have been at the top of the porting game for a long long time. Our work speaks for itself, see above!

The C7 Vette guys are catching on and have been sending us some things to port/polish for them lately, good gains!

Great work and waiting for numbers!:cheers:

Any chance you guys will be doing this to the Focus RS heads as well? It's the same head, just with a better material.

http://www.ford.co.uk/experience-fo...eNews/2015/Ford_Preview_All-New_Ford_Focus_RS

cosmo said:

Any chance you guys will be doing this to the Focus RS heads as well? It's the same head, just with a better material.

http://www.ford.co.uk/experience-fo...eNews/2015/Ford_Preview_All-New_Ford_Focus_RS

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We will be developing the Focus RS in the same manner we are the Mustang. I will have one on order as soon as the dealer we work with can accept one. Doing the cylinder head is definitely not out of the question, I'm hoping the exhaust side is going to be 4-port from the factory versus a "turbofold".

Can we get a shot of the outer cylinder's exhaust exit looking into the port?

Overall, looks good, few concerns though...

Trailing edges are ok for knife-edging, leading should always have generous radii (port divider).

The added 'dog leg' that was ground into the outer cylinder exhaust ports...why? The transition doesn't appear gradual enough to force gases into this area. Just looks like dead space? Clearer pic might help.

How far into the outer exhaust ports do the turbine housing bolt/stud bosses protrude? Another reason why I'm interested in a more detailed pic of these ports.

We gonna get to see a detail of the single scroll adapter to see how all of this works in conjunction?

Will the vj be blended into the chamber? Knock down the sharp angles on the exhaust seat? Exhaust seat width? Can we see where the seat lies on the valve?

Throat %?

What lifts were and will these heads be tested to? 28" I presume?

Sorry for being a pain in the ass w/ all the questions. I like heads.

Herr_Poopschitz said:

Can we get a shot of the outer cylinder's exhaust exit looking into the port?

Overall, looks good, few concerns though...

Trailing edges are ok for knife-edging, leading should always have generous radii (port divider).

The added 'dog leg' that was ground into the outer cylinder exhaust ports...why? The transition doesn't appear gradual enough to force gases into this area. Just looks like dead space? Clearer pic might help.

How far into the outer exhaust ports do the turbine housing bolt/stud bosses protrude? Another reason why I'm interested in a more detailed pic of these ports.

We gonna get to see a detail of the single scroll adapter to see how all of this works in conjunction?

Will the vj be blended into the chamber? Knock down the sharp angles on the exhaust seat? Exhaust seat width? Can we see where the seat lies on the valve?

Throat %?

What lifts were and will these heads be tested to? 28" I presume?

Sorry for being a pain in the ass w/ all the questions. I like head.

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Fixed.

Herr_Poopschitz said:

Can we get a shot of the outer cylinder's exhaust exit looking into the port?

Overall, looks good, few concerns though...

Trailing edges are ok for knife-edging, leading should always have generous radii (port divider).

The added 'dog leg' that was ground into the outer cylinder exhaust ports...why? The transition doesn't appear gradual enough to force gases into this area. Just looks like dead space? Clearer pic might help.

How far into the outer exhaust ports do the turbine housing bolt/stud bosses protrude? Another reason why I'm interested in a more detailed pic of these ports.

We gonna get to see a detail of the single scroll adapter to see how all of this works in conjunction?

Will the vj be blended into the chamber? Knock down the sharp angles on the exhaust seat? Exhaust seat width? Can we see where the seat lies on the valve?

Throat %?

What lifts were and will these heads be tested to? 28" I presume?

Sorry for being a pain in the ass w/ all the questions. I like heads.

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1. No, the head is off to flow testing

2. This is the factory exhaust port design, nothing was added outside of the original shape. The picture might be throwing you off. Regardless it is 100% gasket matched, which is needed to get as much exhaust flow into the manifold as possible. Not only for energy but for better boost control as we are using an external wastegate.

3. The studs go about .30" into the head, the exhaust port has some room there. The main factor is that this one-piece manifold design has coolant running through it. So there are some areas where it can't be opened up anymore than factory without hitting a coolant jacket. I have a junk head on the way so we can cut it open and get a better idea how the coolant jackets are routed. Also, for some other R&D as well :gossip:.

4. Sure, when the turbo kit officially starts shipping there will be product pictures on our website. We make the head flanges in house and are 3D contouring them for optimal flow, again we are trying to get as much flow into the manifold as possible.

5. Once the valve job is done, it will be finalized. Valve job is one of the last processes we do before we do final cleaning and machining. You won't see any of the final combustion chamber work for at least 2 weeks.

6. Once we have valves here, we can determine the throat percentage. I'm thinking we are going to knock the factory seats out and upgrade.

7. 28" and relax, more information will be presented as we get results back.

:cheers:


P.S. - "VJ" HA.

Also the leading edge of the intake divider isn't actually knife edged, it isn't sharp. The whole divider is actually quite thin once the first part at the head flange is removed, its not thats wide all the way down the port, so it's going to be fairly thin regardless.

Do you have a picture of the intake flange on the intake itself you can show us? I'm wondering if it has port dividers also.

Fast64ranchero said:

Do you have a picture of the intake flange on the intake itself you can show us? I'm wondering if it has port dividers also.

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The intake manifold doesn't have port divider like the cylinder head.

Yep they are just rectangular open ports on the intake

Are the top 2 ports on the exhaust manifold from cylinder 1,4 and the bottom port is for 2,3?

Yes