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1981 928S Euro Advice

 
Old 01-13-2008, 01:15 AM
  #61  
largecar379
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Wonder how long it's been sitting around like that.......

What's the other side of the engine look like (internally)?

that's really nasty---

--Russ
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Old 01-13-2008, 02:03 AM
  #62  
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Well, this cylinder was the only one that looked bad when I first pulled the plugs a couple weeks ago. This is why I pulled the left cylinder head. I suspect the other side is fine as the other cylinders. I already cleaned the cylinder off and need to get some PB or something to break the cylinder free. I tried to turn the crank bolt again just after these pics with no luck. I agree, it is nasty. I think the previous owner tried to fix the head gasket with Bars and this was the result and it just sat for years. What spray is best to loosen corrosion? I heard that radiator flush may loosen it. Anyone have any suggestions?
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Old 01-13-2008, 02:13 AM
  #63  
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I say don't waste anymore time with it and just go get a cherry picker, unbolt the engine, pull it out and stick it on a stand. This is half a days worth of work with some buddies and beer.

If I had the room, I would have done that with my Euro. Instead, it has been 2 months chasing **** around the engine, contorting my limbs and digits and using words that would have made Richard Pryor look like a saint. I probably could have had all of the nonsense I am deal with now, all behind me and driving with a smile.

YANK IT! It's easy to do and for what you have and what it has been through, you will kick your own *** for not doing it if you try to fix it in the car.
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Old 01-13-2008, 02:44 AM
  #64  
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Originally Posted by 928ntslow View Post
I say don't waste anymore time with it and just go get a cherry picker, unbolt the engine, pull it out and stick it on a stand. This is half a days worth of work with some buddies and beer.

If I had the room, I would have done that with my Euro. Instead, it has been 2 months chasing **** around the engine, contorting my limbs and digits and using words that would have made Richard Pryor look like a saint. I probably could have had all of the nonsense I am deal with now, all behind me and driving with a smile.

YANK IT! It's easy to do and for what you have and what it has been through, you will kick your own *** for not doing it if you try to fix it in the car.
That's pretty funny Keith, but you're probably right......with one that's that bad, I would not have wasted one minute trying to fix it in the car.

I haven't as yet pulled my 4.5L, and it's got a bad hole as well (I have no idea what's wrong with it, just that the cylinder is down 30 PSI/compression w/ lots of blowby). It does run though, I just can't see pulling it when I'm building a hybrid to replace it.

build the new one, keep driving it until the new one is ready, then take a day or two to do the swap.

--Russ
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Old 01-13-2008, 09:14 PM
  #65  
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If that engine was run with that much coolant in the oil the bearings are not going to be very happy. The other head probably has about as much corrosion as the one which failed.
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Old 01-13-2008, 09:17 PM
  #66  
Charley B
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Anything less than a rebuild on that engine is just a temporary band-aid.
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Old 01-13-2008, 09:41 PM
  #67  
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Hi Charley and Brutus,

I agree with your posts and am trying different ways to try and at least un-seize the piston. I found an old drive boot from my boat I sold and it just happened to be a perfect size to fit around the cylinder. I cleaned off the piston as best as I could with a non-metal brush, put the boot on and poured some Radiator Cleaner in the boot to remove the corrosion. I will do the PB spray if this doesn't work. I don't have a Cherry Picker here, so i thought I would try some stuff in the meantime.





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Old 01-13-2008, 10:03 PM
  #68  
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I also vote to pull the motor......not as hard as it seems....with some help its a days work, less if things go well......

You might need to either rebuild that motor or get a replacement....the good news is 928intl has plenty of known good motors for cheap....$1500 to $1750..so its cheaper to get a replacement

http://www.mailordercentral.com/928i...s.asp?dept=115

While the engine is out it gives you an excuse to upgrade to the newer header design too....or custom headers?
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Old 01-13-2008, 10:16 PM
  #69  
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Yea, now that I think of it, Brian's right. Your engine is a 4.5 which is no big deal. For cheap seats and a lot less work, just take a used engine and stuff it back in and call it a day.
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