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Old 03-10-2014, 08:11 AM   #21
1turbofocus
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There is no need to do the C&C head it would be a waste of money unless you going for 200+ and willing to tune the engine to 8000-8500 It just isnt needed

I finished the tuning on a 2.3 Duratec yesterday that made 184 HP to the wheels with nothing more then STG1 cams , my street ported head , valve springs , header and intake , the TB and intake was stock and it made that power at 6700 with a VERY nice flat TQ line

The 2.3 head on the 2.0 I wouldnt do anything but smooth the edges and put it on and go

You DONT need the costly C&C head

Tom
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Old 03-10-2014, 09:31 AM   #22
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Quote:
Originally Posted by 1turbofocus View Post
There is no need to do the C&C head it would be a waste of money unless you going for 200+ and willing to tune the engine to 8000-8500 It just isnt needed

I finished the tuning on a 2.3 Duratec yesterday that made 184 HP to the wheels with nothing more then >>>STG1 cams , my street ported head , valve springs , header and intake , the TB and intake was stock and it made that power at 6700 with a VERY nice flat TQ line

The 2.3 head on the 2.0 I wouldnt do anything but smooth the edges and put it on and go

You DONT need the costly C&C head

Tom
This^^^^^^^^^^^^^^^^
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Old 03-10-2014, 10:27 AM   #23
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Quote:
Originally Posted by 1turbofocus View Post
There is no need to do the C&C head it would be a waste of money unless you going for 200+ and willing to tune the engine to 8000-8500 It just isnt needed

...

You DONT need the costly C&C head

Tom
CNC, Computerized Numerical Control.....

Take a look at your cylinder head ports. If they are anything like the previous generations heads, they could use a little bit of cleaning.

2004 2.0L ZETEC



I agree that CNC is a bit over the top for a street build, However, a mild port to blend the throat into the seat would be well worth it IMO. Enlarging the exhaust ports a wee bit wouldn't hurt ether. Every little bit helps, not just as it pertains to adding power. The less restriction to flow in and out of the engine, the better the fuel economy as well as performance. It's also a bit easier to tune!
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Old 03-10-2014, 11:44 AM   #24
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After a few hours with a cartridge roll a cylinder head can look like this.




Very basic porting, just cleaning up the casting flaws and blending the throat.

Few more hours can get you a larger and mirror polished exhaust port.


No need to sped $1500 on a CNC job when any engine porter should be able to clean up a head for a decent price. If you don't want to bother with any porting. Then the real gains are all in the valve job. A 3 angle or even better would be a good radius valve job. That is where the money should be spent.
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Old 03-10-2014, 06:26 PM   #25
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So the consensus is to get a 2.3 head, Supertech or stock valves, port and clean it up, install upgraded springs, and install my stage one crane cams.

So with all that I could be around ~180 whp with a decent tq curve?

I do have a header and all that other good stuff btw.



How well do you think all of this would work with an FSwerks turbo kit?
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Old 03-10-2014, 06:44 PM   #26
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Check out this thread:

http://www.focusfanatics.com/forum/s...ght=Flow+bench

Particularly post #66, regarding flow results (and some preceding posts).

Stock D23 head flows as well as you need.

Lots more info. in the thread, wanted to highlight results so you didn't have to read it all.
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Old 03-12-2014, 12:28 PM   #27
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The ports pictured above are very nice but over kill unless you going for big NA hp and want to turn the engine to 8000+

I good street clean up , light bowel blend , good valve job , cams , header ,exh , intake , tune will get you to the 180 range easy on an other wise stock engine , stock intake and TB

Tom
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Old 03-13-2014, 05:28 AM   #28
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Quote:
Originally Posted by GhostTribute View Post
CNC, Computerized Numerical Control.....

Take a look at your cylinder head ports. If they are anything like the previous generations heads, they could use a little bit of cleaning.

2004 2.0L ZETEC



I agree that CNC is a bit over the top for a street build, However, a mild port to blend the throat into the seat would be well worth it IMO. Enlarging the exhaust ports a wee bit wouldn't hurt ether. Every little bit helps, not just as it pertains to adding power. The less restriction to flow in and out of the engine, the better the fuel economy as well as performance. It's also a bit easier to tune!
This is a zetec head which probably needs work compared to a 23 D-tech head.
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Old 03-13-2014, 07:05 PM   #29
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SO I totally read a good little bit of that link there.. and can I say GOD O MIGHTY so much stuff to do when your entre lvl with only basic tools and a good hand craft and crit thinking skills. I'm trying to do these types of things to my car. And today while I was at work I was thinking .." hey go to the JunkYard and get a 2.3 head and get my block and take it to a machine shop".. NOP lol I'm going to need a 2nd car for that haha. BUT what about using stock heads and ALL.. there shouldn't be a problem with mods like intake manifold on up, headers on back, and the cams? IF u go with a stage1 cam wouldn't u need to upgrade the rods/ pistons?? OR would you be ok beause i'vr been wanting to upgrade the engine with out going crazy stupid on it since it is my only car atm
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Old 03-13-2014, 08:33 PM   #30
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I would buy a 2.5 short block used , buy a 2.3 head used as you have time and money build them with everything needed and do the swap over the weekend when ready

Unless your going for 7600 rpm + use the stock rods and pistons , freshen up the engine , change the springs in the head and do stg2 or stg3 cams , cosi knock off intake , good header and 2.5 or 3 inch Exh

Best bang for the buck and little to no down time

Tom
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