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> Head Flycut problem ?, 1.7 liter heads back from the shop
pgollender
post Nov 14 2017, 07:24 PM
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Got my heads back from machine shop and noticed these 4 defects in the outer jug seat:
Attached Image
(IMG:style_emoticons/default/WTF.gif)
Additionally there is a chip missing near the spark plug hole. The other head is perfect.
What can I do to fix it ?
Weld and regrind ?
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porschetub
post Nov 14 2017, 07:34 PM
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QUOTE(pgollender @ Nov 15 2017, 02:24 PM) *

Got my heads back from machine shop and noticed these 4 defects in the outer jug seat:
Attached Image
(IMG:style_emoticons/default/WTF.gif)
Additionally there is a chip missing near the spark plug hole. The other head is perfect.
What can I do to fix it ?
Weld and regrind ?

all good don't worry you are fine (IMG:style_emoticons/default/biggrin.gif) ,those marks have no effect on your rebuild ok.
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worn
post Nov 14 2017, 08:30 PM
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QUOTE(pgollender @ Nov 14 2017, 05:24 PM) *

Got my heads back from machine shop and noticed these 4 defects in the outer jug seat:
Attached Image
(IMG:style_emoticons/default/WTF.gif)
Additionally there is a chip missing near the spark plug hole. The other head is perfect.
What can I do to fix it ?
Weld and regrind ?

I don’t think that is a defect in the sealing surface. But it has been a few years since I did mine.
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jd74914
post Nov 14 2017, 10:45 PM
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I would smooth out the chip in the chamber so you don't get a hot spot there. No need to reweld/machine IMHO. I'm a little surprised the shop didn't do that little bit of smoothing though.
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McMark
post Nov 15 2017, 12:25 PM
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(IMG:style_emoticons/default/agree.gif) No sealing on that surface. That material was removed so it wouldn't hit the cylinder fins.
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