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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E39 (1997 - 2003)

E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #26  
Old 11-24-2011, 10:20 AM
jarhed1964 jarhed1964 is offline
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Last edited by jarhed1964; 11-25-2011 at 11:06 AM.
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  #27  
Old 11-24-2011, 10:34 AM
jarhed1964 jarhed1964 is offline
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Made a little headway yesterday, scrubbed out three of the six cylinders. It's not easy to do holding a vac and the drill with the wire brush at the same time while trying not to strip the tape off of the oil and coolant holes that I plugged up to keep grit from dropping into.

Oil is already drained but I think I'm going to pour at least one quart into the top of the head when I get it back to clean up any errant dust I created out of the oil passages when I get it back on.

CCV ordered (OEM), new vac hoses and coolant temp sensor to be picked up tomorrow, cut to fit, and staged. Going to scrub the intake manifold real good and try to get any leftover oil out of the inside of it.

Should hear from the shop either tomorrow or Monday about whether or not they found any cracks. He inspected it good when I took it in and found no obvious signs of cracks, but still getting the pressure test done. I might have him look at one of the screw holes for the t-stat housing because I think the lower one may be partially stripped.

I'll be inspecting the camshafts with a bright LED light tomorrow morning to check for signs of wear. Remind me to tell the story of a Chevy cam I didn't inspect years ago and the resulting catastrophic failure 10 miles down the road after the rebuild (it was cracked).

Pics soon.

Last edited by jarhed1964; 11-24-2011 at 10:35 AM.
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  #28  
Old 11-25-2011, 11:08 AM
jarhed1964 jarhed1964 is offline
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In all of the engines I've ever rebuilt, I've never come across something like this. Trying to find a safe way to clean this filth up. Scale and crust at the top of the cylinder above the upper limit of the rings.
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  #29  
Old 11-25-2011, 12:17 PM
jarhed1964 jarhed1964 is offline
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I think it's gonna be Scotch Bright pads and a little brake fluid. It's pretty soft so should come off pretty easily. Then, a razor blade and scotch bright to the mating surfaces. Ordering parts is going to wait until after I hear from the shop with a "Go" or "No Go" on the head.
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  #30  
Old 11-25-2011, 12:24 PM
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doru doru is offline
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Holy macro man!
Never seen something like that.
Anyways, GL with your rebuild. Imagine a 2000 e39 M5 with carbon buildup issue using that gasoline........
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  #31  
Old 11-25-2011, 12:30 PM
jarhed1964 jarhed1964 is offline
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Quote:
Originally Posted by doru View Post
Holy macro man!
Never seen something like that.
Anyways, GL with your rebuild. Imagine a 2000 e39 M5 with carbon buildup issue using that gasoline........
Yeah, it was nasty. Started cleaning out the intake today too. Plenty of loose oil in there so my guess is that the mess was mostly caused by the old CCV.
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  #32  
Old 11-25-2011, 12:36 PM
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doru doru is offline
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That's what Cn90 said - failed CCV. I see yours is a '97.
When was the CCV last changed? How many miles on it?
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  #33  
Old 11-25-2011, 12:40 PM
jarhed1964 jarhed1964 is offline
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Quote:
Originally Posted by doru View Post
That's what Cn90 said - failed CCV. I see yours is a '97.
When was the CCV last changed? How many miles on it?

Yep, and I had always *intended* to replace the thing. Just been very busy and lack of motivation (and being cheap) since no outward symptoms presented themselves. I've never replaced it. Got the car in Miami in October of 04 and it had 109k on it. Has 166500k on it now. Runs smoothly, but it's about time the little things were taken care of.
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  #34  
Old 11-25-2011, 02:13 PM
Steve530 Steve530 is offline
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How bad was your oil consumption?

This is pretty convincing evidence that the CCV should be checked frequently and replaced on on a schedule.
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  #35  
Old 11-25-2011, 02:58 PM
jarhed1964 jarhed1964 is offline
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Originally Posted by Steve530 View Post
How bad was your oil consumption?

This is pretty convincing evidence that the CCV should be checked frequently and replaced on on a schedule.
To tell the truth, the oil consumption wasn't really that bad. I replaced the oil filter housing gasket about 6 months ago and that stopped the previous consumption issue I had. Since then, no real issues. I think I have put maybe a half pint of oil in there since.

I definitely agree with you that the CCV should be checked and replaced on a schedule. I feel guilty for not doing it before, but it's always been in the back of my mind that I should just go ahead and replace the thing.
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  #36  
Old 11-25-2011, 05:18 PM
Steve530 Steve530 is offline
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Quote:
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...I think I have put maybe a half pint of oil in there since...
I was hoping that the oil consumption was high enough to be diagnostic, but a half a pint not much oil.

I was going through a lot more oil than that before I replaced my CCV. I'd hate to think what the tops of the pistons in my engine must look like.
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  #37  
Old 11-29-2011, 11:19 AM
jarhed1964 jarhed1964 is offline
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Good news!


Head is fine. It's been cut and cleaned up. Having him chase the thread holes for the bottom t-stat bolt (I think it was stripped). Still have to find the source of the leak. Possibly the warp was giving up some coolant under pressure. Hope that was it.

Going to clean up all 24 lifters, get my gasket kit, finish polishing the block surface, replacing all of the vac hoses, and get her back together.
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  #38  
Old 12-02-2011, 05:18 PM
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  #39  
Old 12-02-2011, 05:20 PM
jarhed1964 jarhed1964 is offline
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Got a small round grinder to pull some of the crap out of the combustion chambers and the valve faces. Going to pull the valves when my gasket set gets here to replace the seals. Still trying to clean diagnose all 24 lifters. Have one with what seems to me is a "loose check ball" in the piston.
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  #40  
Old 12-02-2011, 09:46 PM
bobdmac bobdmac is offline
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BMW's sure have handsome engines when they're all cleaned up, don't they?
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  #41  
Old 12-02-2011, 10:28 PM
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Quick question: There's the M54 engine lifter "issue" lately . brought up. Did you notice anything out of the ordinary"? Did you change them, or did you run the same? Did they look OK?

Thanks
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  #42  
Old 12-03-2011, 08:33 AM
jarhed1964 jarhed1964 is offline
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Quote:
Originally Posted by doru View Post
Quick question: There's the M54 engine lifter "issue" lately . brought up. Did you notice anything out of the ordinary"? Did you change them, or did you run the same? Did they look OK?

Thanks
Not sure I understand..... I have an M52. I'm in the process of dismantling, cleaning, and reassembling the lifters. The only thing I see wrong is one of them has a fairly loose ball underneath the piston.
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  #43  
Old 12-03-2011, 08:34 AM
jarhed1964 jarhed1964 is offline
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BMW's sure have handsome engines when they're all cleaned up, don't they?
Yep!

Wait till I get those valves and combustion chambers done.
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  #44  
Old 12-03-2011, 10:29 AM
jarhed1964 jarhed1964 is offline
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Couple more photos. Cam rails and a lifter in the middle of cleaning. Getting ready to run out and rent a valve spring compressor. Trick will be finding the appropriate one that will fit these valve springs. Going to pull the valves so I can replace the seals, clean the valves a little deeper, especially since the faces are still caked with carbon, then finish scrubbing out the combustion chamber.
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  #45  
Old 12-03-2011, 11:24 AM
bobdmac bobdmac is offline
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It looks like you're making good progress. As you probably know, you may need new shims for the tappets after the head work.
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  #46  
Old 12-03-2011, 11:36 AM
jarhed1964 jarhed1964 is offline
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It looks like you're making good progress. As you probably know, you may need new shims for the tappets after the head work.
Shouldn't need any shims, he said he didn't take much off the surface of the head when I asked him if I needed a thicker gasket. He didn't touch the combustion chambers and only cleaned the cam rail.
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  #47  
Old 12-06-2011, 03:17 PM
jarhed1964 jarhed1964 is offline
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Guess who's going to be lapping valves?




Can't see it real good in this picture. I only have the Cyl 1 and 2 exhaust and intake valves out so far. All of the exhaust valves have filth on the seats and the faces. The seats are the problem. Can't get a good seal with buildup on the valve seats.

Meanwhile, gasket and seal set arrived from FCP, so did my new coolant hoses, coolant, head bolts, and oil filter.
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  #48  
Old 12-06-2011, 06:37 PM
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Just wow on the carbon build up!! I had to pull the head on my 944 turbo with a 150k miles and it was no where close to that! I cleaned my piston tops off with carb cleaner, a rag, and a plastic scraper. I do not know if premium gas had an impact or not, but when I cleaned my intercooler last year it was pretty oily from 25 years of air being ran through it. In fact, none of the turbo cars I have had the head off had that much carbon on the piston tops... Of course since I value my FI engines, I only run premium (93 oct and no ethanol).
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  #49  
Old 12-06-2011, 06:44 PM
jarhed1964 jarhed1964 is offline
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Originally Posted by manticore33 View Post
Just wow on the carbon build up!! I had to pull the head on my 944 turbo with a 150k miles and it was no where close to that! I cleaned my piston tops off with carb cleaner, a rag, and a plastic scraper. I do not know if premium gas had an impact or not, but when I cleaned my intercooler last year it was pretty oily from 25 years of air being ran through it. In fact, none of the turbo cars I have had the head off had that much carbon on the piston tops... Of course since I value my FI engines, I only run premium (93 oct and no ethanol).
I remember the days when I used to run Dodge Daytona's/Chrysler Lasers. That POS Chrysler 4-banger that wasn't built to handle a turbo. My God.... you should have SEEN the filth in the turbos I replaced.

I'm actually digging around trying to find ways to clean this mess, especially the heavy stuff. I've always taken parts to the machine shop for ultrasonic and acid baths. I'm going to try some Blaster "LMT". According to a friend of mine, it should soften all that crap pretty quickly and I should be able to scrape it off.

Going to go pickup the lapper and compound tomorrow. Last time I did valves, there were only 12. 24 is going to be a serious PITA.
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  #50  
Old 12-08-2011, 02:31 PM
jarhed1964 jarhed1964 is offline
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Valve spring retainers hate me and want to kill me. Just an FYI.


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