Heads are done. A couple questions...
#2910284
04/14/21 10:11 PM
04/14/21 10:11 PM
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I got the Eddy heads back from porting today. This is the first time I've had this kind of work done and wanted to know if this is common.
As a machinist, I'm well versed in the mechanics of machining dissimilar metals in a single assembly. However, it strikes me as odd that the little thin chunkies of aluminum would be left hanging near the valve guides. It makes me want to pull the valves and clean it up by hand. Granted, it's tiny thin flakes of aluminum that are unlikely to cause damage but I'll be left wondering if they're flaking off as the engine runs. The spark plug holes look pretty rough, too. I know that threads mean a tapered end will have highs and lows based upon the depth of the thread at each point. I'll shoot some plugs in them and see which holes need attention.
I also noticed there are little pockets in the port roof just in front of the guides. At first glance it looked like he broke through to the spring seats but closer examination shows it to be little pockets left over from the original casting.True to mass production casting, the little pockets vary from port to port.
It seems his program didn't do much to the intake port roof but it might not have been necessary and breaking through would be listed as Bad Thing.
The chambers look pretty nice other than the plug bosses. I haven't popped out a valve to inspect the seat work, nor have I stuffed an endoscope in there.
What are your impressions of the job done by this one crappy pic of one random port?
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
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Re: Heads are done. A couple questions...
[Re: AndyF]
#2910332
04/15/21 12:32 AM
04/15/21 12:32 AM
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I assume you'd blow them apart and clean them up.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
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Re: Heads are done. A couple questions...
[Re: feets]
#2910348
04/15/21 01:26 AM
04/15/21 01:26 AM
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BloFish
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Typical of a CNC program.
It really doesn't matter whether you win or lose… as long as you look good doing it!
‘65 A100 ‘69 ‘Cuda ‘73 Vega GT ‘06 Mega Cab ‘14 Mercedes SLK
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Re: Heads are done. A couple questions...
[Re: feets]
#2910359
04/15/21 01:49 AM
04/15/21 01:49 AM
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AndyF
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I assume you'd blow them apart and clean them up. Not me, I learned my lesson and now everything goes to Porter Racing Heads before it comes to me.
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Re: Heads are done. A couple questions...
[Re: AndyF]
#2910400
04/15/21 08:28 AM
04/15/21 08:28 AM
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I assume you'd blow them apart and clean them up. Not me, I learned my lesson and now everything goes to Porter Racing Heads before it comes to me. He suggested this vendor. I assumed they'd be viable when they came back to me. Didn't think I'd have to send them to a third party for finishing.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
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Re: Heads are done. A couple questions...
[Re: feets]
#2910441
04/15/21 10:50 AM
04/15/21 10:50 AM
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polyspheric
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how aggressive the programmer was in removing material
More variables: 1. how many passes are used to remove X amount of material (how many hours is the machine running) 2. what radius is the cutting head
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Re: Heads are done. A couple questions...
[Re: feets]
#2910458
04/15/21 11:38 AM
04/15/21 11:38 AM
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Joined: Sep 2003
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moparx
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as a machinist, i don't like what i see on that guide, CNC program or not. those heads need taken apart and that mess touched up/fixed. how many ports are like that ?
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Re: Heads are done. A couple questions...
[Re: BigBlockGTS]
#2910518
04/15/21 02:48 PM
04/15/21 02:48 PM
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Wait a minute? You had the heads ported and prepped by a shop and they sent them back to you with the advice to send them to another shop for "finishing"??? No. He sent them back with no invoice or suggestions after charging me 60% more than we discussed on the initial quote.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
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Re: Heads are done. A couple questions...
[Re: polyspheric]
#2910521
04/15/21 02:52 PM
04/15/21 02:52 PM
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how aggressive the programmer was in removing material
More variables: 1. how many passes are used to remove X amount of material (how many hours is the machine running) 2. what radius is the cutting head You missed something. I am a machinist. Therefore, I know exactly what I'm seeing. I see a distinct lack of second operations and/or hand work to finish. It's the type of work that doesn't leave my shop.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
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Re: Heads are done. A couple questions...
[Re: moparx]
#2910522
04/15/21 02:55 PM
04/15/21 02:55 PM
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as a machinist, i don't like what i see on that guide, CNC program or not. those heads need taken apart and that mess touched up/fixed. how many ports are like that ? All ports are like that. This is not what I expected to see after being told "around $750" and being charged $1233.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
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Re: Heads are done. A couple questions...
[Re: feets]
#2910551
04/15/21 04:27 PM
04/15/21 04:27 PM
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CSK
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as a machinist, i don't like what i see on that guide, CNC program or not. those heads need taken apart and that mess touched up/fixed. how many ports are like that ? All ports are like that. This is not what I expected to see after being told "around $750" and being charged $1233. If you can get them to Katy Tx, take them apart & bring 2 retainers with locks & one each valves & I will fix them & give you some flow #'s off of my toy Super Flow bench,, No charge !!! & to be VERY clear I almost did not want to make this post because I do NOT want to take work away from Dwayne Porter, he is the BEST choice
Last edited by csk; 04/15/21 04:53 PM.
1968 Charger COLD A/C Hilborn EFI 512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim 2020 T/A 392 Stock 11.79 @ 114.5
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Re: Heads are done. A couple questions...
[Re: pittsburghracer]
#2910569
04/15/21 05:00 PM
04/15/21 05:00 PM
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I didn't even get a thank you.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
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Re: Heads are done. A couple questions...
[Re: CSK]
#2910570
04/15/21 05:02 PM
04/15/21 05:02 PM
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I appreciate the offer CSK.
I'll send you a message.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
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