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moorepower

I read in a Jim Pasha article somewhere that you can identify an early ('76, early '77) cylinder head by the shape of the exhaust ports exiting the head. Early is supposed to have a flat spot at the top of the port, and later has a totally round port. Is this correct?
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Dan.

'88 924S-LE (Luddite Edition)
Manual steering, manual sunroof, manual windows, AC delete, cruise delete, M030 Konis, 25.5mm torsions, 26.8/20 sways

924-76 · Joined: 05 Jun 2006 Posts: 1489 Location: Ontario, Canada

I just took that pic of my ’76 head that sit in the garage and you can see the flat spot at the top.

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1976 924 N/A ROW SOLD
1980 931S
1981 931 Part car RIP

emoore924 · Joined: 13 Apr 2004 Posts: 2822

I think the later heads have the same flat spot, so I don't think that ID's it. Check the valve size. Don't the really early heads have smaller valves? Also, probably a different casting/part #. Besides, I think they're unusual to run a-x, so most of what you'd see out there is the later style.

Edit: I just checked a few downstairs. All the n/a's have the half-rounded ports, all the turbos are round (no surprise, many of them have the ring inserts...)

moorepower · Posted: Wed Oct 20, 2010 10:05 am Post subject:

I checked valve sizes, and I have 40mm intake/33mm exhaust. So I guess it is a '77.5+ head.

It's a good thing, because I was about to push this car into the lake. I'm down to my last straw with this thing.

_________________
Dan.

'88 924S-LE (Luddite Edition)
Manual steering, manual sunroof, manual windows, AC delete, cruise delete, M030 Konis, 25.5mm torsions, 26.8/20 sways