Replacing head gasket this week, any other parts, seals, etc... need changing?? - BMW M5 Forum and M6 Forums

Go Back   BMW M5 Forum and M6 Forums > BMW M5, M5 Touring, M6 and Z8 Forums > E34 M5 Discussion

E34 M5 Discussion 1988-1995 Sedan and Touring


Reply
 
LinkBack Thread Tools Rate Thread Display Modes
Old 20th February 2002, 06:46   #1
RobReb
Junior Member, warming up (<31 posts)
 
Join Date: Sep 2001
Location: Nashville
Age: 44

Garage: 1991 BMW M5 Black/Black 18" M-Parallels

Sales Feedback: (0)

Thanks: 0
Thanked 0 Times in 0 Posts
Replacing head gasket this week, any other parts, seals, etc... need changing??

Believe it or not, my aftermarket warranty company stepped up to the plate (probably because the car is immaculate and was when the guy inspected it), and agreed to replace my leaking head gasket at 111,326 miles. Warranty runs out at 124,000. Replacing the head gasket also includes replacing all the seals that are taken apart to get to the HG, which is alot of seals and rings.

Since we're in the engine that far, is there anything else you guys recommend to go ahead and look at, inspect, or to consider replacing? My mechanic suggested to replace the valve stem seals, since my car is burning some oil (about one quart per 1,500 miles). Any comments on this or other recommendations, just so I cover everything while he has this thing taken apart.

Thanks in advance for all comments.

Robert Collins
RobReb is offline   Reply With Quote
Old 20th February 2002, 11:42   #2
g boyd
Member, Sport: Off DSC: On (>50 posts)
 
g boyd's Avatar
 
Join Date: Oct 2000
Location: Riyadh Saudi Arabia

Garage: 1992 Macaoblue

Sales Feedback: (0)

Thanks: 0
Thanked 0 Times in 0 Posts
100% change the valve stem oils seals, get them to check the valve guides, and the head is not warped,Take time now,will save money later.Has the chain ceen replaced?
g boyd is offline   Reply With Quote
Old 21st February 2002, 04:31   #3
RobReb
Junior Member, warming up (<31 posts)
 
Join Date: Sep 2001
Location: Nashville
Age: 44

Garage: 1991 BMW M5 Black/Black 18" M-Parallels

Sales Feedback: (0)

Thanks: 0
Thanked 0 Times in 0 Posts
Regarding your recommendations, and more questions...

You are dead on. I called the mechanic today, and he said he went ahead and replaced the valve stem seals because they were shot. He said the valve guides were slightly worn, but thought the guides were good for another 100,000 miles. He has seen valve guides on many a Porsche 911 (not mine, thank god) that have been twice as worn as my M5 and still running fine. So unless premature valve guide wear is a BMW or E34 M5 characteristic, he thinks it is fine. If I need to do it now though, please tell me, because I might be able to get the warranty company to pay for it while there in there if this is a BMW commonality.

Having said that, should I go ahead and fix the valve guides? He said that is another $1200-1500 and did not think it to be necessary for several more years. He is a fantastic mechanic, but admits he is a Porsche specialist, not an M-Series specialist or even a BMW guy. What fascinates me is his aptitude for this complicated engine without ever being in one (he has worked on hundreds of BMW's just not an E34 M5).

He did give me and other E34 M5 owners a huge compliment today. He said, "Man, I love driving that car. I could drive something like that to work everyday. Of course it would probably get me in a lot of trouble". :p

For a guy who works on 400 HP 911 Turbo's to say that, makes me feel great about my everyday car. Plus, he's been doing me right on my 911 since 1997.

He checked the head today for trueness, and said it is unbelievably PERFECT!!! As far as the chain, I'll check the records. What is the recommendation for miles on a chain?

Thanks again for all the help.

Robert Collins
RobReb is offline   Reply With Quote
Old 21st February 2002, 04:58   #4
de Witt
m5board.comoholic (>1000 posts)
 
de Witt's Avatar
 
Join Date: Aug 2001
Location: Denver CO

Garage: jlkjldf

Sales Feedback: (0)

Thanks: 3
Thanked 7 Times in 7 Posts
The chain itself is not a problem. It is a duplex chain, so it will go for a long time. I have heard reasonable estimates of 150,000miles before replacement, being on the safe side. The chain drives the oil pump, so you can see the vitality of the chain.

It would be best to change the chain guides now. Might as well get them under warranty.

Other parts you might want to check, especially with higher miles:

Waterpump
Thermostat
Hoses (all radiator hoses-this is a must!!)
Radiator (check for clogs due to silicone and unbalanced pH anti-freezes. Use only BMW coolant or Mercedes Benz coolant!)
Valves (adjustments, etc)

Tell us how things go. Glad your warranty is footin the bill!





DeWitt
__________________
{o,o}
|)__)
-"-"-
The E28 M5 FAQ
The E34 M5 FAQ
The E24 M6/M635CSi FAQ
de Witt is offline   Reply With Quote
Old 22nd February 2002, 20:09   #5
g boyd
Member, Sport: Off DSC: On (>50 posts)
 
g boyd's Avatar
 
Join Date: Oct 2000
Location: Riyadh Saudi Arabia

Garage: 1992 Macaoblue

Sales Feedback: (0)

Thanks: 0
Thanked 0 Times in 0 Posts
Rob good you have found a good mechanic ,some one you can trust is half the battle,if the car has had good oil(i use mobil one)the chain guides may be ok,i think i am the only one i have seen on this site that has had a valve spring snap and kill my motor, so when i stripped my motor i replaced them all, i live in sunny Saudi Arabia but i still look on a site called Kormanfastbmw in the states they have every thing you you will need to get the beast up to speed again,look on the site print a list out and get your mechanic to tell you what he recommends i would do i now ,i changed the cam sprockets(yours are all ready removed so no labour cost) i hope i am not to late with the reply(weekend in Saudi) good luck. keep me posted
g boyd is offline   Reply With Quote
Reply

Bookmarks



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Nowack Tuning Report, The Truth (Long Version) CharlesW E39 M5 and E52 Z8 Discussion 90 2nd September 2011 09:49
Stereo, Sub, Woofer, DSP, Pin, Bass, Speakers V-10 4 Me E39 M5 and E52 Z8 Discussion 0 26th September 2003 19:54
Nowack Tuning Report, The Truth (Long Version) CharlesW Most Memorable Threads' 44 30th November 2002 04:49
OT: A great story for anyone who ever turned a wrench greg E39 M5 and E52 Z8 Discussion 23 9th February 2002 15:43
replacing timing chain without removing the head ? Yves E34 M5 Discussion 5 20th February 2001 16:35

Loading...

All times are GMT +2. The time now is 15:14.



Everything Copyright 2000-2008. Do not use ANYTHING from this site without written permission. All images, graphics, sound files, video files and text appearing on this web site are the exclusive property of m5board.com and are protected under international copyright laws. All images, graphics, sound files, video files and text on this site are for on-screen and on-site viewing and listening only. No part of this web site may be reproduced, copied, saved, stored, manipulated, or used in any form for personal or commercial purposes without the prior written permission of m5board.com. Use of any image or graphic as the basis for another photographic concept or illustration is a violation of the copyright. Any copyright infringement will be prosecuted to the full extent of federal and international copyright laws. M5board.com is an enthusiast board and we don't condone any dangerous activity. Our airfield events are completely safe based on years of experience, we conduct them during clear visibility with mature participants that have several years of experience with high-performance automobiles, large unobstructed run-off zones on sealed off private former military airbases and we clearly mark the braking zones. If inexperienced with high speed driving we do not recommend organizing your own event but attending a high-performance driving school. The use of the term "BMW" on this site is for reference only, and does not imply any connection between m5board.com and BMW AG or BMW North America.