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Old 08-04-2003, 05:01   #1 (permalink)
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Thumbs down ea falcon head gasket

just wondering what else may as well be done to the ea whilst the head is off as there may be other things straight away to follow welch plugs are already replaced
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Old 08-04-2003, 05:05   #2 (permalink)
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Re: ea falcon head gasket

Get it ported!


:)
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Old 08-04-2003, 05:07   #3 (permalink)
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Re: ea falcon head gasket

cost is for porting ???
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Old 08-04-2003, 05:25   #4 (permalink)
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Re: ea falcon head gasket

Around $330 or so, depending on how much research you do :)

Other than that, there's not much that goes wrong with these motors, suggest you make sure the block's level or even have it skimmed, as I understand the casting quality wasn't too great on a lot of the early blocks.
Wouldn't go decking the block though, bumping up the compression IMO will only cause you idle problems and force you to run premium, the only real difference is when you work the hell out of the motor, which I don't think you'll do :)
But yeah, a port and an EF cam (about $50 is what I pay) will give you a good kick in the pants, even without a decent exhaust.

Basically it comes down to how much you want to spend, really.
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Old 08-04-2003, 05:27   #5 (permalink)
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Re: ea falcon head gasket

Umm, better clarify that, port+polish is a fun mod, not a necessary one :s6:
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Old 08-04-2003, 18:58   #6 (permalink)
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Re: ea falcon head gasket

ok sounds like someone wants to send his spare head to mongrel with 50 buck, how would this go with still being the old cfi, how much can u do the cam and port and polish for (FORD OWNER RATES) HEHE,
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Old 08-04-2003, 19:00   #7 (permalink)
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Re: ea falcon head gasket

and what do u mean by fun mode power or fun to do it? how does port and polish help ?
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Old 08-05-2003, 06:27   #8 (permalink)
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Re: ea falcon head gasket

Crap Crap Crap Crap Crap Bloody Time-based Logout!!!!!!!!!
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Old 08-05-2003, 06:58   #9 (permalink)
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Re: ea falcon head gasket

OK I'll try again, and copy it this time :s


I am in Perth, WA, and do not have that equipment anyway. (YET hehe, I will eventually )

First, the cam.
The cam controls the length of time the valve is open, therefore the amout of fuel/air which can enter the motor. In a performance motor, the object is to have the valve fully open for as long as the piston is generating suction, in order to fit more air into the motor.
In a street car, or daily driver, the object is to maximise fuel going in and therefore power, while retaining fuel economy. Therefore there are a variety of different cams available based on owner requirements.

Second, the head.
Porting the head involves enlarging the air pathways within the head.
Polishing is where those pathways are gven a ligh polish to smooth them down, thus reducing turbulence.

The whole idea of a port+polish is to allow gases to flow smoothly and rapidly through the motor. Think of the motor as an air pump - the more air you can move, the quicker, then the better the pump is.
The piston has to suck fuel in and push exhaust out. Allowing the airflows through the head at higher volumes and speeds will facilitate this process. In addition, you will be able to fit slightly more fuel into the cylinder based on the greater volume of gas incoming.


Now, combining the two.
The extra fuel allowed in by the cam and the increased airflow from the headwork combine to become more than the sum of their parts. The motor can breathe better, and gets more fuel, therefore can generate more power and does not have to waste as much power forcing gases in and out.




Of course, porting the head will only allow as much air through as the intake and exhaust manifolds will allow.
Here's the bad news - the CFI manifold cannot supply sufficient air and fuel to achieve much of a power boost, even with your new head and cam. I am afraid you will need to convert to MPFI before these mods have much effect.....sorry about that I assumed you already had MPFI!

On the other hand.....
How much money do you want to spend on it? You could do the port/polish while it's off, save yourself the cost of a new gasket/bolts later, and put MPFI and a cam on the car at a later date...


Sorry for the length of that post! :)
BTW, I reckon these mods are well worth doing - these Falcon motors have a lot of potential. They are relatively cheap to modify and do not need much more than what I have described, plus extractors, in order to go VERY hard indeed while still being good on the fuel.
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Pacemaker headers + 2.5" exhaust
EF Fairmont interior
MP3 player
Lowered King springs
5 speed manual
EF motor

Newest mod: EF Ghia wiring loom and dash
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Old 08-05-2003, 07:19   #10 (permalink)
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Head Gaskets

You can get the head or block machine to fit O'rings into either one to help head gasket seal, supposed to stop them blowing head gaskets, you have to take the gasket you are going to use with the head because the o'rings have to be sized to suit the gasket. I recommend the ACL head gaskets, i have cooked the shit out of an EA motor before (had no water in it) and it didn't blow the gasket, but it did crack the head.
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