Go Back   United Bimmer Community - BMW Forum > UnitedBimmer- Model Categories > E36
FAQ Members List Calendar Advertise With Us Mark Forums Read

E36 General discussion and technical help for (E36) 1992-1999 3 series cars. 318, 323, 325, 328.

Reply
 
Thread Tools
Old 04-12-2012, 10:58 PM   #1
tlynn

Name: tlynn
Title: United Newb
Status: Offline
Join Date: Feb 2009
Location: Menlo Park, CA
User not setup in Rate My Car.
Click here to set it up.
Your Ride: 95 530
325i orig 367,440 mi

I'm afraid I'm going to spin a bearing not sure what to do. Still runs great no major work ever done. Change the oil periodically that's about it. 60 w t 4 the past 7 or 8 years. What could be the matter besides being old
  Reply With Quote
Old 04-13-2012, 01:01 AM   #2
DEATH2000
 
DEATH2000's Avatar

Name: DEATH2000
Title: Moderator
Status: Offline
Join Date: May 2005
Location: Calgary, Alberta
Rate My Car: 111 / 340
Your Ride: 1998 E36 328i sedan
I don't know what your asking. Your post doesn't make sense. What type of oil do you use?
__________________


VIEW MY E36 BLOG HERE

New to United Bimmer? Check out our Introductions and Greetings Section and introduce yourself today!

E36 Bentley Manual PDF download avilable HERE
  Reply With Quote
Old 04-15-2012, 07:36 PM   #3
tlynn

Name: tlynn
Title: United Newb
Status: Offline
Join Date: Feb 2009
Location: Menlo Park, CA
User not setup in Rate My Car.
Click here to set it up.
Your Ride: 95 530
325i '93 367,440 mi "knocks"

My engine recently developed a deep knock that is pretty constant now, quits momentarily, but comes back. Thing is, no change in performance whatsoever. Runs great - just is noisy at idle, or that's when I hear it.

It has earned "knock" rights after all, with 367,440 miles on the original engine, hey, I'm not complaining. Just wonder what it is. I understand high mileage = greater clearance (where?) that apparently affects oil pressure, but ...where? Bearings? Found a set for $89. Seems like a big job.

Has served me well - Minimal maintainance at best - 60 wt. Valvoline Racing oil past 8yrs. Don't anybody laugh now, let's keep it to a low roar...but seriously thinking of going to 90 wt...unless there is 75 or 80.

Only work ever done was replaced the coils about 6 months ago; ditched the water pump/ stupid plastic impellers (designed to fail) with all metal replacement about 6 yrs ago.

Basically just curious what to expect. If it's going to die, I'll park it with dignity she deserves.
Thanks.






Sorry, about the other post - was from my cell - screen blacked out, thought I lost it altogether - didn't know it was posted.
  Reply With Quote
Old 04-15-2012, 08:10 PM   #4
DEATH2000
 
DEATH2000's Avatar

Name: DEATH2000
Title: Moderator
Status: Offline
Join Date: May 2005
Location: Calgary, Alberta
Rate My Car: 111 / 340
Your Ride: 1998 E36 328i sedan
Why are you using 60wt oil? That's not needed or recommended. Valvoline is not on the BMW LL01 approved oils list. Escpescially that weight. why are you gonna dump money into the bearings when that might not be the cause. Just because it has 357,000 miles doesn't mean it's the bearings going. The knock could be a few things, includig the oil your using, or something simple like bad gas or clogged cats.
__________________


VIEW MY E36 BLOG HERE

New to United Bimmer? Check out our Introductions and Greetings Section and introduce yourself today!

E36 Bentley Manual PDF download avilable HERE
  Reply With Quote
Old 04-16-2012, 12:26 AM   #5
tlynn

Name: tlynn
Title: United Newb
Status: Offline
Join Date: Feb 2009
Location: Menlo Park, CA
User not setup in Rate My Car.
Click here to set it up.
Your Ride: 95 530
325i '93 367,440 mi "knocks"

Sure quick to criticize. "Bad gas or clogged cats"?? would interfere with performance. That's all you got? Have no performance issues. I don't think you read my post. 365k not 355.

- I said I was wondering what it could be and curious what to expect.
- I don't dump my money anywhere.
- IF it is the bearings, I checked to see what the parts would cost.
- 60 wt for 8 yrs., 375k and still going strong, maybe it should be recommended.
- I use it because: it rattles with regular motor oil

- After an engine reaches 150k all specified oil is too thin because the clearances in the engine become too great, greater than what specified oil is intended for.
- It becomes closer to a drag race engine in which the clearances are made intentionally, extremely loose so that it can achieve extremely high rpm's and take an enormace amount of torque and power without binding the engine.
- 10,000 rpm drag race engines require 90-120 wt oil so they don't rattle and parts don't keep slapping around.

So what is YOUR mileage and how much $ have you dumped into yours? I think you need a nap.
  Reply With Quote
Old 04-16-2012, 09:22 AM   #6
DEATH2000
 
DEATH2000's Avatar

Name: DEATH2000
Title: Moderator
Status: Offline
Join Date: May 2005
Location: Calgary, Alberta
Rate My Car: 111 / 340
Your Ride: 1998 E36 328i sedan
262,000 as it sits now. I have run Mobile 1 0W-40 for the last few years with no issues. Engine still runs just as good as the day I got it. I didn't know you were a petroleum engineer. What makes you qualified to say "all" oil isn't suitable after a certain Milage.?

How much do you think replacing the bearings is going to cost?

Ive seen an early 90's E36 spitting 600,000 miles still using the original block and head that had no issues or knocks. This 600,000 mile E36 also never needed an engine rebuild. Running an oil like that hides a problem apperantly. Your engine isn't supposed to rattle so your letting your oil hide a problem.

Why did you even post here if you didn't want advice?
__________________


VIEW MY E36 BLOG HERE

New to United Bimmer? Check out our Introductions and Greetings Section and introduce yourself today!

E36 Bentley Manual PDF download avilable HERE

Last edited by DEATH2000; 04-16-2012 at 09:25 AM..
  Reply With Quote
Old 04-16-2012, 01:31 PM   #7
tlynn

Name: tlynn
Title: United Newb
Status: Offline
Join Date: Feb 2009
Location: Menlo Park, CA
User not setup in Rate My Car.
Click here to set it up.
Your Ride: 95 530
Advice would be good - it's too late to hear what I should not have done. So back to square one. We can rule out bad gas. The cats you referred to, I thought that would downgrade the performance. If not, how is it checked?
How are knocks diagnosed?
  Reply With Quote
Old 04-16-2012, 01:52 PM   #8
DEATH2000
 
DEATH2000's Avatar

Name: DEATH2000
Title: Moderator
Status: Offline
Join Date: May 2005
Location: Calgary, Alberta
Rate My Car: 111 / 340
Your Ride: 1998 E36 328i sedan
The car has a knock sensor to detect for detonation. However detonation usually starts out as inaudible and by the time it's audible the damage has already been done. Knocking can come from a variety of sources, including the spark plugs. I've heard of lose spark plugs causing it. If they have never been replaced try that. However I suggested bad gas first because that's usually the most common. People think its okay to use 87 octane and hear a knock but when they fill up with 91 again it goes away.

And your 100% sure this knock is coming from the engine itself, not just under the hood? I have heard of a issue were the fan was hitting a hose and causing a knock sound as well.
__________________


VIEW MY E36 BLOG HERE

New to United Bimmer? Check out our Introductions and Greetings Section and introduce yourself today!

E36 Bentley Manual PDF download avilable HERE
  Reply With Quote
Old 04-16-2012, 03:49 PM   #9
3050rpm
 
3050rpm's Avatar

Name: 3050rpm
Title: Senior Member
Status: Offline
Join Date: Jul 2006
User not setup in Rate My Car.
Click here to set it up.
Your Ride: 1995 325i
Using the "low hanging fruit" approach, one suggestion is the chain tensioner, it may have done its duty, now time for replacement, simple and inexpensive to do.
  Reply With Quote
Old 04-18-2012, 09:47 PM   #10
tlynn

Name: tlynn
Title: United Newb
Status: Offline
Join Date: Feb 2009
Location: Menlo Park, CA
User not setup in Rate My Car.
Click here to set it up.
Your Ride: 95 530
New spark plugs when coils replaced but will check if any are loose. Knock is in sync with the rpm's. Knock is definately internal.

One little thing I forgor to mention was . . . oil changed late - knock developed right before it was changed.

Not familiar with the knock sensor or damage caused by detonation - raises the question, damage to what.

Yesterday saw drops of oil on the ground - got underneath to see where dripping from. Appeared to be from the oil pan - bolts were tightened. Forgot to see if drops appeared again.

Still runs great but I know I am foolish for continuing to drive it.
  Reply With Quote
Old 04-18-2012, 10:10 PM   #11
DEATH2000
 
DEATH2000's Avatar

Name: DEATH2000
Title: Moderator
Status: Offline
Join Date: May 2005
Location: Calgary, Alberta
Rate My Car: 111 / 340
Your Ride: 1998 E36 328i sedan
Detonation is two sources of flame inside the combustion chamber. See page three of this PDF: http://www.mlcmotorfactors.co.uk/Tro...s/PistonTT.pdf

Where in the engine is it coming from? If its the top by the front odds ate its your VANOS or your chain tensioner.
__________________


VIEW MY E36 BLOG HERE

New to United Bimmer? Check out our Introductions and Greetings Section and introduce yourself today!

E36 Bentley Manual PDF download avilable HERE
  Reply With Quote
Reply


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

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 Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Feeler/FS/FT... 1993 BMW 325i ivopivo Bmw Cars For Sale/Wanted 0 04-13-2011 11:39 AM
M50 intake Manifold in a 325i? tree36 E36 1 11-05-2008 11:00 PM
E46 325i car in US For Sale Lambourne Bmw Cars For Sale/Wanted 9 02-01-2008 09:30 AM
M3 rims on e46 325i? possible? 2003bmw325i E46 9 05-30-2007 05:52 PM
Turbo for 325I? maximk2 E36 9 04-28-2007 10:17 PM


All times are GMT -5. The time now is 04:43 PM.

A vBSkinworks Design

 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright © 2005-2013 UnitedBimmer.com