Head work opinions - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 23 (permalink) Old 07-22-2008, 02:28 AM Thread Starter
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Head work opinions

Just curious and want to see the opinions. I saw this pic of heads and the CC was worked and saw a few comments about them but never was answered into detail if it was good or bad or why. Any opinions?

http://good-times.webshots.com/photo...63526373yblWZk


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post #2 of 23 (permalink) Old 07-22-2008, 02:32 AM
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Re: Head work opinions

URL doesn't work.

Head work is a great idea and so are combustion chambers. BUT there are right ways and wrong ways of doing combustion chambers. I know mine will be very different on the next set I do

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post #3 of 23 (permalink) Old 07-22-2008, 02:33 AM
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Re: Head work opinions

i know nothing about machine work..so what the hell does that do ?

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post #4 of 23 (permalink) Old 07-22-2008, 02:38 AM Thread Starter
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Re: Head work opinions

http://good-times.webshots.com/photo...63526373yblWZk

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post #5 of 23 (permalink) Old 07-22-2008, 02:40 AM Thread Starter
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Re: Head work opinions

I fixed it I think........it works for me I also inserted a pic but the link is a much larger pic

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post #6 of 23 (permalink) Old 07-22-2008, 02:44 AM
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Re: Head work opinions

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Originally Posted by bigrpowr View Post
i know nothing about machine work..so what the hell does that do ?

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post #7 of 23 (permalink) Old 07-22-2008, 02:51 AM
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Re: Head work opinions

It looks to me like they were trying to make the heads flow more air at lower valve lift's like .050" to .200" by unshrouding the valves. In doing so it also lowered the compression which is done pretty frequently anyhow.

This is a typical procedure when porting a set of high performance (gas) heads, but you normally don't have that much material that needs removed. Consequently the gains in air flow at lower lifts could be quite substantial on the head pictured. You need to put it on a flow bench before and after to know for sure though.

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post #8 of 23 (permalink) Old 07-22-2008, 02:53 AM
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Re: Head work opinions

Unshrouding the valves are a good thing and increase flow a little bit. That is a mild version of what I have envisioned for my next set of heads.

And since we are all talking about this head. I don't understand why everyone thinks the fire ring grooves need to be in the head. Replacing the fire rings with the motor still in the truck would be impossible that way. With the grooves in the block its only a headache. That is assuming you make sure the rings stay seated in the grooves after you drop the heads on

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post #9 of 23 (permalink) Old 07-22-2008, 03:01 AM
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Re: Head work opinions

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Originally Posted by HotRodTractor View Post

And since we are all talking about this head. I don't understand why everyone thinks the fire ring grooves need to be in the head. Replacing the fire rings with the motor still in the truck would be impossible that way. With the grooves in the block its only a headache. That is assuming you make sure the rings stay seated in the grooves after you drop the heads on

Jason
Someone please correct me if I'm wrong here.

But I always thought if you just grooved one side head or block (I'm not sure if it matters) that was O-ringed and if the groove was cut in both that was fireringed. which seems like it would hold better.

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post #10 of 23 (permalink) Old 07-22-2008, 03:03 AM Thread Starter
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Re: Head work opinions

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Originally Posted by racehauler View Post
It looks to me like they were trying to make the heads flow more air at lower valve lift's like .050" to .200" by unshrouding the valves. In doing so it also lowered the compression which is done pretty frequently anyhow.

This is a typical procedure when porting a set of high performance (gas) heads, but you normally don't have that much material that needs removed. Consequently the gains in air flow at lower lifts could be quite substantial on the head pictured. You need to put it on a flow bench before and after to know for sure though.
It did help, we flowed them before and after....its my old motor and pic, I just saw the guy selling the engine and a few comments were made about the head work and just wanted to get it out in the open and get some opinions, just for $hits and giggles.

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