The M3cutters - UK BMW M3 Group Forum
 

Go Back   The M3cutters - UK BMW M3 Group Forum > M3 and M4 Talk > E46 M3 (2001-2006)



Reply
 
Thread Tools Display Modes
Old 19th June 2017, 06:45 PM   #1
Seanjmoyle
On the path
 
Seanjmoyle's Avatar
 
Join Date: Jun 2017
Location: Plymouth
Posts: 55
Car: C250 + A1 S line
Default E46 head gasket

I hope this isnt a stupid question. Currently looking to purchase an E46 M3 coupe, many have had head gasket replacement work. Is this a good or bad thing? As in would it be better to buy an M3 of around 80-90k with the head gasket replaced, or if i buy one of around that mileage is it something id likely have to get done, say a 2 in 5 chance or something? Any info or experience would be great!
Seanjmoyle is offline   Reply With Quote
Sponsored links
Old 19th June 2017, 07:20 PM   #2
TomKED
A mere Chipper
 
TomKED's Avatar
 
Join Date: Dec 2016
Posts: 33
Car: 2005 E46 M3
Default

I would definitely consider it a good thing, but having said that, if it hasn't been done that not necessarily a bad thing. They all seem to go, but it's not quite as predictable as shells/vanos etc
TomKED is offline   Reply With Quote
Old 19th June 2017, 07:26 PM   #3
M33SWJ
Achieved official socks
 
M33SWJ's Avatar
 
Join Date: Apr 2014
Location: Hartley Wintney
Posts: 2,817
Car: 2004 M3 vert SMG
Colour Combo: Mystic Blue / Black
Default

Just had mine replaced...a good thing unless you fancy paying 2k bill !!
M33SWJ is offline   Reply With Quote
Old 19th June 2017, 09:53 PM   #4
Rob043
Achieved official socks
 
Rob043's Avatar
 
Join Date: Aug 2015
Location: Dumfries
Posts: 1,127
Car: E46 M3
Colour Combo: Carbon Black/Imola Red
Default

Plenty with high miles and no replacement, just stripped mine at 110k miles to find a perfectly good HG in there....

Its another item on the E46 wheel of fortune.
Rob043 is offline   Reply With Quote
Old 19th June 2017, 09:59 PM   #5
kevM3
Achieved official socks
 
kevM3's Avatar
 
Join Date: Nov 2011
Location: cardiff
Posts: 4,882
Car: 2009 Monte Carlo M3 & a 2009 123d M sport coupe
Colour Combo: Monte Carlo blue ,black leather
Default

A good thing, if you cant diy it
kevM3 is online now   Reply With Quote
Old 19th June 2017, 10:21 PM   #6
bod1986
Achieved official socks
 
bod1986's Avatar
 
Join Date: Mar 2014
Posts: 887
Car: multiple
Default

There is an e46 m3 around my area with 167k no head gasket and no vanos as yet. But I would see it as a plus if its been done. I'm on 100k and pressure drop is still minimal across all cylinders.
bod1986 is offline   Reply With Quote
Old 20th June 2017, 06:13 AM   #7
E46CoupeM3
Achieved official socks
 
E46CoupeM3's Avatar
 
Join Date: Oct 2012
Location: England
Posts: 10,558
Car: 2001 BMW M3
Colour Combo: Carbon Black
Default

Quote:
Originally Posted by M33SWJ View Post
Just had mine replaced...a good thing unless you fancy paying 2k bill !!
If you paid 2k for a basic head gasket job you paid twice what you should have. No need to scare the OP
E46CoupeM3 is offline   Reply With Quote
Old 20th June 2017, 06:15 AM   #8
M33SWJ
Achieved official socks
 
M33SWJ's Avatar
 
Join Date: Apr 2014
Location: Hartley Wintney
Posts: 2,817
Car: 2004 M3 vert SMG
Colour Combo: Mystic Blue / Black
Default

Quote:
Originally Posted by E46CoupeM3 View Post
If you paid 2k for a basic head gasket job you paid twice what you should have. No need to scare the OP
Agreed..but you may as well change the worn part also!!
M33SWJ is offline   Reply With Quote
Old 20th June 2017, 06:18 AM   #9
E46CoupeM3
Achieved official socks
 
E46CoupeM3's Avatar
 
Join Date: Oct 2012
Location: England
Posts: 10,558
Car: 2001 BMW M3
Colour Combo: Carbon Black
Default

Quote:
Originally Posted by TomKED View Post
I would definitely consider it a good thing, but having said that, if it hasn't been done that not necessarily a bad thing. They all seem to go, but it's not quite as predictable as shells/vanos etc
Not necessarily, you don't know if it's been done because the car may have had the hell baked out of it. Skimming a badly warped head only gives you a warped head with one straight side. It's not unknown for heads to get that warped cam bearings are out of line (not seen that on an M3 ).

Trouble is the M3 owners liking for throwing away good parts means you can't tell if it's been baked just by seeing if they had a pump and stat at the same time.

If you can get a compression test done when purchasing that's best option
E46CoupeM3 is offline   Reply With Quote
Old 20th June 2017, 06:20 AM   #10
E46CoupeM3
Achieved official socks
 
E46CoupeM3's Avatar
 
Join Date: Oct 2012
Location: England
Posts: 10,558
Car: 2001 BMW M3
Colour Combo: Carbon Black
Default

Quote:
Originally Posted by M33SWJ View Post
Agreed..but you may as well change the worn part also!!
Not really, depends what and how / if worn
E46CoupeM3 is offline   Reply With Quote
Old 20th June 2017, 06:28 AM   #11
AshE46M3
Achieved official socks
 
AshE46M3's Avatar
 
Join Date: Feb 2015
Location: Preston
Posts: 1,873
Car: Golf R
Default

Quote:
Originally Posted by Seanjmoyle View Post
I hope this isnt a stupid question. Currently looking to purchase an E46 M3 coupe, many have had head gasket replacement work. Is this a good or bad thing? As in would it be better to buy an M3 of around 80-90k with the head gasket replaced, or if i buy one of around that mileage is it something id likely have to get done, say a 2 in 5 chance or something? Any info or experience would be great!
"Most" cars that have been known to go have gone around 100-120k if its gonna go. I say most as I have read a few threads where people quoted the mileage at where theirs went.

If you can get a car that's been done its obviously a benefit, that bit was a silly question

It costs about 1200 to get fixed if you don't do the other bits as mentioned above too.
AshE46M3 is offline   Reply With Quote
Old 20th June 2017, 06:29 AM   #12
M33SWJ
Achieved official socks
 
M33SWJ's Avatar
 
Join Date: Apr 2014
Location: Hartley Wintney
Posts: 2,817
Car: 2004 M3 vert SMG
Colour Combo: Mystic Blue / Black
Default

Quote:
Originally Posted by E46CoupeM3 View Post
Not really, depends what and how / if worn
More shockingly BM wanted over 4K for the same work!!
M33SWJ is offline   Reply With Quote
Old 20th June 2017, 06:32 AM   #13
E46CoupeM3
Achieved official socks
 
E46CoupeM3's Avatar
 
Join Date: Oct 2012
Location: England
Posts: 10,558
Car: 2001 BMW M3
Colour Combo: Carbon Black
Default

^that would tickle
E46CoupeM3 is offline   Reply With Quote
Old 20th June 2017, 07:53 AM   #14
zeta4
Achieved official socks
 
zeta4's Avatar
 
Join Date: May 2015
Location: oxford
Posts: 1,052
Car: 2003 E46 M3, E90 330d
Colour Combo: Silver Grey/Black
Default

If you buy a car with the HG done you will miss one of the joys of M3 ownership ie
adding " is that pinking?" to " Is my vanos rattling? and " Are the rod bearings knocking" .
Not to mention " Im sure the subframe mounts arent cracked " !

Welcome !
zeta4 is offline   Reply With Quote
Old 20th June 2017, 07:57 AM   #15
flintsigs
Wearing official underwear
 
flintsigs's Avatar
 
Join Date: Mar 2017
Posts: 175
Car: Mazda 6 MPS
Default

Quote:
Originally Posted by zeta4 View Post
If you buy a car with the HG done you will miss one of the joys of M3 ownership ie
adding " is that pinking?" to " Is my vanos rattling? and " Are the rod bearings knocking" .
Not to mention " Im sure the subframe mounts arent cracked " !

Welcome !
after reading to this forum for a few months im just surprised there are any e46 m3's on the road anymore
flintsigs is online now   Reply With Quote
Old 20th June 2017, 08:09 AM   #16
Liamx
Wearing official underwear
 
Liamx's Avatar
 
Join Date: May 2012
Posts: 194
Car: Mystic Blue E46 M3
Default

Quote:
Originally Posted by flintsigs View Post
after reading to this forum for a few months im just surprised there are any e46 m3's on the road anymore
Likewise - actually makes me resent driving mine sometimes because there's so much scaremongering!
Liamx is online now   Reply With Quote
Old 20th June 2017, 08:15 AM   #17
E46CoupeM3
Achieved official socks
 
E46CoupeM3's Avatar
 
Join Date: Oct 2012
Location: England
Posts: 10,558
Car: 2001 BMW M3
Colour Combo: Carbon Black
Default

Quote:
Originally Posted by flintsigs View Post
after reading to this forum for a few months im just surprised there are any e46 m3's on the road anymore
Lots of people are becoming "subject matter experts" from reading alone and have never held a spanner. Everyone adds another thing you "must do" and the list of unnecessary work becomes longer. Garages don't mind doing what you ask, they get paid.


You can always add new fears, but fear prevents taking old fears away. For example look how many buying guides talk about the all important and now totally irrelevant running in service for an eleven to sixteen year old car.
E46CoupeM3 is offline   Reply With Quote
Old 20th June 2017, 08:39 AM   #18
Seanjmoyle
On the path
 
Seanjmoyle's Avatar
 
Join Date: Jun 2017
Location: Plymouth
Posts: 55
Car: C250 + A1 S line
Default

Thanks for the info guys, so im taking away from this that its not a bad thing if its been done, if its around 100k would be best if it had been done, depends on how its been driven, but an 80k 2 owners from the same family from new should be okay (the car i have my eye on) if possible try to get a compression test while geting the subframe inspected.

Seanjmoyle is offline   Reply With Quote
Old 20th June 2017, 10:25 AM   #19
flintsigs
Wearing official underwear
 
flintsigs's Avatar
 
Join Date: Mar 2017
Posts: 175
Car: Mazda 6 MPS
Default

Quote:
Originally Posted by Seanjmoyle View Post
Thanks for the info guys, so im taking away from this that its not a bad thing if its been done, if its around 100k would be best if it had been done, depends on how its been driven, but an 80k 2 owners from the same family from new should be okay (the car i have my eye on) if possible try to get a compression test while geting the subframe inspected.

what to take away from this is that if the car is running ok and not exhibiiting any problems then why worry. As soon as something starts to go wrong then investigate and rectify, There are little to no problems out there that cost more than 1/1.5 k to fix these days, so make sure you have a little contigency fund set aside and you are good to go. All this preventative changing of perfectly good parts is a such a waste of money to me. Enjoy the car, drive it and when invetiatbly it goes wrong as all 10/15 year old cars do, fix it.
flintsigs is online now   Reply With Quote
Old 20th June 2017, 10:20 PM   #20
Seanjmoyle
On the path
 
Seanjmoyle's Avatar
 
Join Date: Jun 2017
Location: Plymouth
Posts: 55
Car: C250 + A1 S line
Default

Quote:
Originally Posted by flintsigs View Post
what to take away from this is that if the car is running ok and not exhibiiting any problems then why worry. As soon as something starts to go wrong then investigate and rectify, There are little to no problems out there that cost more than 1/1.5 k to fix these days, so make sure you have a little contigency fund set aside and you are good to go. All this preventative changing of perfectly good parts is a such a waste of money to me. Enjoy the car, drive it and when invetiatbly it goes wrong as all 10/15 year old cars do, fix it.
I like your outlook, great advice.
Seanjmoyle is offline   Reply With Quote
Reply

Bookmarks


Thread Tools
Display Modes



All times are GMT. The time now is 07:08 AM.


This website uses cookies. By continuing to use the site you are agreeing to our use of cookies. To find out more about the cookies this website uses, click here.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright © 2007 - 2014 M3cutters. All Rights Reserved.