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Finally got around to the 928 after finishing the Vette.
Pulled the intake manifold.  I noticed #1 was missing it's injector when I got the car. This is what I saw.  But it cleaned up not so bad.  I'll put some carb cleaner in next.  Anyone know how to bypass the oil cooler? Sent from my iPhone using Tapatalk
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09-15-2017, 06:29 AM
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Keep us posted on how you progress with her.
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1967 912 (now w/ 50% fewer random holes in it) 911 w/ 3.2 1974 914 (3.2L swap underway) 1984 928s (S4 engine and suspension), 1987 928S4 |
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09-15-2017, 07:33 AM
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Took the valve covers off today to oil the cams and clean the covers. Tomorrow paint and reinstall the intake manifold remove the spark plugs to clean the holes. Lots and lots of
Cleaning. Sent from my iPhone using Tapatalk
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09-20-2017, 01:58 AM
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Surprised the valves look rusty like that.
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1967 912 (now w/ 50% fewer random holes in it) 911 w/ 3.2 1974 914 (3.2L swap underway) 1984 928s (S4 engine and suspension), 1987 928S4 |
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09-20-2017, 05:09 AM
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One injector was missing. When I pulled the intake manifold I found something the looked like tissue paper which seems to leak the rust onto the valve. I could similar substance in some of the spark plug holes. I don't see a waterline so I guess the car sat outside without its hood for some time.
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09-20-2017, 02:16 PM
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Pulled the plugs. They were a rusted mess. Won't even show them. Put oil in all cylinders put the tbelt on. The motor won't complete a revolution. It stops before 45degrees. I put a magnet in all the cylinders but nothing came out. Which one should I focus on?
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09-21-2017, 04:42 AM
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If the plugs were that rusted the cylinder bores are possibly iffy. There may be a ridge preventing free rotation.
Get other opinions but I'd let several applications of oil soak the bores and then gently try again.
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1967 912 (now w/ 50% fewer random holes in it) 911 w/ 3.2 1974 914 (3.2L swap underway) 1984 928s (S4 engine and suspension), 1987 928S4 |
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09-21-2017, 07:25 AM
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i'd first make absolutely sure you have the timing marks lined up correctly - you could be tapping the pistons against the valves - if the marks are on then i'd look at that #1 cylinder - who knows what might have fallen down that open injector port and got through the open valve - might not be metal so magnet won't find it - find one of those scopes that you can send down the spark plug hole and have a look inside the cylinders - some car parts stores will lend them to you here in the u.s. - and as tdskip said keep adding a bit of oil to cylinders - might dissolve some accumulated junk - and i think you can just route the oil cooler line back into itself to bypass the cooler
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84 928 S - SOLD 2012 Cayenne S |
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09-21-2017, 09:58 AM
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Good point
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1967 912 (now w/ 50% fewer random holes in it) 911 w/ 3.2 1974 914 (3.2L swap underway) 1984 928s (S4 engine and suspension), 1987 928S4 |
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09-21-2017, 10:06 AM
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Thanks for the input. I'll do the soak and check again. I ran out of daylight yesterday. I don't think anything got past the rusted spark plugs because the treads were rust free and they came out the normally. It feels like something metal. I can hear a slight clang. Which cylinder will be highest before 45degrees?
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09-21-2017, 02:12 PM
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Check the timing! Don't try force anything.
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1967 912 (now w/ 50% fewer random holes in it) 911 w/ 3.2 1974 914 (3.2L swap underway) 1984 928s (S4 engine and suspension), 1987 928S4 |
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09-21-2017, 02:41 PM
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i was thinking something might have dropped down the open #1 fuel injector hole and from there it could have slipped past the intake valve - but from what you described of the noise it sounds like the piston hitting the valve - check the timing marks again - do you know why the car was sitting as it was? - could it have suffered a broken timing belt? - if so the valves could be bent so there would be no way to turn the engine now - i'm not sure about the 32 valve engines but on the 16 valve ones the cam timing marks are sort of hard to see on the back side of the cam pulleys - +1 ^ don't force it
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09-21-2017, 05:53 PM
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Good knows what injustices this car suffered. Think I might as well pull the heads. I'm more thank half way there anyway.
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09-22-2017, 05:23 PM
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Got it!!!! Just a little more patience.
 this screw was in #8. Sent from my iPad using Tapatalk
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09-23-2017, 09:03 PM
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Wow
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1967 912 (now w/ 50% fewer random holes in it) 911 w/ 3.2 1974 914 (3.2L swap underway) 1984 928s (S4 engine and suspension), 1987 928S4 |
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09-24-2017, 05:47 AM
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Join Date: May 2010
Location: Magnolia TX, just north of Houston
Posts: 369
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  And here is what happens when some one chooses not to pull out the screw they dropped in....seller claimed "bad head gasket". Fortunately I didn't pay much for the car, but this was most unplesant. Car had 68,000 miles on the ODO
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1956 Intermeccanica 356 Speedster (sold),1957 Intermeccanica 356 Speedster (sold),,1985.5 Porsche 944 (sold),1955 Thunder Ranch 550 Spyder (sold), 1955 Outlaw 356 Speedster (currently in build out), 1984 Porsche 928S (White), 1984 Porsche 928S (Red) |
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09-24-2017, 05:48 AM
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I don't think I've had enough coffee yet to be looking at pictures like this...
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1967 912 (now w/ 50% fewer random holes in it) 911 w/ 3.2 1974 914 (3.2L swap underway) 1984 928s (S4 engine and suspension), 1987 928S4 |
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09-24-2017, 05:51 AM
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injector hold down bolt?? - "hmmmm...wonder where that bolt went..oh well i have another...i'll find it later" - well...it's been found - sorry about that
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09-24-2017, 09:15 AM
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A little progress this morning.
Plugs, wires, intake and injectors done.  Sent from my iPhone using Tapatalk
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09-26-2017, 07:34 PM
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Press on, thanks for the update.
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1967 912 (now w/ 50% fewer random holes in it) 911 w/ 3.2 1974 914 (3.2L swap underway) 1984 928s (S4 engine and suspension), 1987 928S4 |
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09-26-2017, 08:11 PM
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