S62 "Rebuild" - BMW M5 Forum and M6 Forums
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post #1 of 17 Old 1st February 2017, 05:04 PM Thread Starter
J.Almonte
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S62 "Rebuild"

Decided to do a separate thread from my "Revival of an Imola".

2017 Update!!


So what happen was....

Since I bought the car I noticed oil smoke from the exhaust when coming to a complete stop on deceleration downshifting.
This situation had me concerned and the more I looked on the forums, it looked like it was a kind of common issue.
The was no oil on the plenum but nonetheless I replaced the oil separators and all the hoses. Problem was still present.

This was not affecting performance whatsoever and was more of an embarrassing issue.

At the end of 2016 I started making plans to install a ESS supercharger but before doing this decided to tackle the smoke situation and decided to refresh my S62.

Note: Before opening up the engine I did compression and leak down test to discard piston rings as the culprit of the oil situation.
All the results (5% leak) where very good and close to each other.
This left me with the assumption that my valve stem seals were the problem.




Here is the plan:
1- Tear down the S62.
2- Send the heads to the machine shop
3- Put it back together
4- Pray...
5- Drive

Parts to be used:

1- Head gasket set 11121407805
2- Bottom end gasket set 11111407804
3- Rod bearings
4- Rod bolts
5- Vanos seal kit (Includes Beisan o-rings, solenoids o-rings, etc...)
6- Chains
7- Chain tensioner
8- Chain guides
9- Crank dampener bolts
10- Water pump, thermostat, etc...
11- Head gasket
12- Cylinder head bolts
13- Bunch of overpriced BMW o-rings...

Will also be doing a Heat Exchanger delete.

This "while in there" motto, did some serious damage to my Supercharger funds...

Worth to mention that I will be doing all the work myself with my buddy Mike that owns Euro Spec Automotive in Tampa, FL.
Any advice is welcome!!

Some of the parts.





On to the pictures!

















This is it so far.
The heads will be ready for pick up next Friday.

Questions:
1- Should I replace the piston rings? If I do... do I need to do anything special to the block bores?
2- Can I remove the pistons to clean them and reinstall? (I will make sure they go back in the same spot)

Last edited by J.Almonte; 1st February 2017 at 05:04 PM.
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post #2 of 17 Old 1st February 2017, 07:43 PM
Thumper600
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I am laughing out loud, thanks for sharing your unique camshaft holding in place tools. And here I thought using a couple of old valves was unique. As for the rings, I'd check with an Indy about what grit stone to use in a honer because I'm under the impression you need to do something in order to get the rings to seat just not sure how abrasive the "something" needs to be. Enjoy your project and keep us posted
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post #3 of 17 Old 2nd February 2017, 04:08 AM
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post #4 of 17 Old 2nd February 2017, 04:30 AM
herrubermensch
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Quote:
Originally Posted by kashill View Post
Yes, replace the rings and hone the block.
And re-expose the silicone to the requisite rPk and RA values. Good luck.

--Peter

Managing Member of
Partee Racing, LLC , The S62 Shop, LLC, and The S54 Shop, LLC

Last edited by herrubermensch; 2nd February 2017 at 04:32 AM.
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post #5 of 17 Old 2nd February 2017, 08:50 AM
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Cool tread, nice pictures. I`m might bee doing this myselves one day.
I used electrolythe cleaner to clean the pistons last time I changed piston rings (Cosworth YB engine in 1999).
I`s also mandatory to either only hone the cylinders or bore (if cylinder is oval) them before instaling new rings.
Why do you do the heat exchanger delete? Are you installing external oil cooler??
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post #6 of 17 Old 2nd February 2017, 11:01 AM
Sailor24
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I like your idea, but if you want to rebuilt, send it to a rebuilder like peter or Mr. super human like his handle says. The results will be different,
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post #7 of 17 Old 2nd February 2017, 10:30 PM
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Quote:
Originally Posted by Sailor24 View Post
I like your idea, but if you want to rebuilt, send it to a rebuilder like peter or Mr. super human like his handle says. The results will be different,
LOL. I know, that handle was picked when I was a tad younger and had a little less humility. Thanks for the reference, Sailor!

--Peter

Managing Member of
Partee Racing, LLC , The S62 Shop, LLC, and The S54 Shop, LLC
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post #8 of 17 Old 4th February 2017, 02:23 PM
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From what I understand from some sources you maybe living up to your handle at the new shop.
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post #9 of 17 Old 4th February 2017, 04:58 PM
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Originally Posted by Sailor24 View Post
From what I understand from some sources you maybe living up to your handle at the new shop.
That is great to hear! We are striving to be decidedly different from other engine shops. Candor and an obsessive interest in the outcome of our work help us do better.

--Peter

Managing Member of
Partee Racing, LLC , The S62 Shop, LLC, and The S54 Shop, LLC
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post #10 of 17 Old 5th February 2017, 09:48 PM
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impressive. i wouldn't dare doing such a job . i will take the engine out and take it to a shop to do it. good luck and hopefully we will see a video for the car running soon
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