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E34 (1989 - 1995)

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  #1  
Old 10-16-2011, 08:09 AM
TDanza525i TDanza525i is offline
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Mein Auto: 1990 525I
Timing belt

Does anyone know what will happen if the t-belt has a failure on an m20?
Will the pistions hit the valves or is there enough clearance?
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  #2  
Old 10-16-2011, 08:14 AM
BMR_LVR's Avatar
BMR_LVR BMR_LVR is offline
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Location: Asheboro, NC
 
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Total permanent failure. It is an "interference engine". See the link below, specifically the "maintenance" section.

http://www.usautoparts.net/bmw/engines/m20.htm

Steve
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Most problems are usually something simple !

Quote:
Originally Posted by noego View Post
It's Deja Poo - as in, I've heard this **** before.
Steve

Calypso Red 1992 525i with 200K miles

1991 735i - Sold
1992 525i - Sold
1995 325is - Sold
2000 528i - Sold

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  #3  
Old 10-16-2011, 08:57 AM
south26 south26 is offline
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I just re-posted my link on why you should change the timing belt.

http://www.bimmerfest.com/forums/sho...561&highlight=

Last edited by south26; 10-16-2011 at 07:14 PM.
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  #4  
Old 10-16-2011, 09:41 AM
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BMR_LVR BMR_LVR is offline
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Location: Asheboro, NC
 
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^ +1

Steve
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Most problems are usually something simple !

Quote:
Originally Posted by noego View Post
It's Deja Poo - as in, I've heard this **** before.
Steve

Calypso Red 1992 525i with 200K miles

1991 735i - Sold
1992 525i - Sold
1995 325is - Sold
2000 528i - Sold

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  #5  
Old 10-17-2011, 04:31 PM
TDanza525i TDanza525i is offline
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Thanks guys,
I changed my t-belt and ten today and good thing too cause the tensioner was worn out dont know how much longer it had and dont care to find out. the belt and tentioner had about 50k on it.
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  #6  
Old 10-17-2011, 05:00 PM
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BMR_LVR BMR_LVR is offline
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Location: Asheboro, NC
 
Join Date: Dec 2008
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Mein Auto: 1992 525i


Feels good to know you don't have to worry about it now for a while doesn't it? You'll feel that way too when you do a full coolant system overhaul.

Steve
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Most problems are usually something simple !

Quote:
Originally Posted by noego View Post
It's Deja Poo - as in, I've heard this **** before.
Steve

Calypso Red 1992 525i with 200K miles

1991 735i - Sold
1992 525i - Sold
1995 325is - Sold
2000 528i - Sold

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  #7  
Old 10-17-2011, 06:10 PM
TDanza525i TDanza525i is offline
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Yea it does feel good. What parts do I change for a cooling system overhaul. I heard of that before but i thought it was only for the e46 and e39 and newer.
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  #8  
Old 10-17-2011, 07:18 PM
BMR_LVR's Avatar
BMR_LVR BMR_LVR is offline
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Location: Asheboro, NC
 
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Posts: 5,264
Mein Auto: 1992 525i
Quote:
Originally Posted by TDanza525i View Post
Yea it does feel good. What parts do I change for a cooling system overhaul. I heard of that before but i thought it was only for the e46 and e39 and newer.
These (in order of importance first)

water pump pulley hold down tool and 32 mm wrench (can be bought as a set for about $32 online)
water pump (with metal impeller)
thermostat
thermostat housing (many recommend the aluminum one)
radiator
fan (OEM only)
fan clutch
hoses (even the ones under the intake manifold)
belts
expansion cap
bleed screw (get the brass one)
pulleys
coolant temperature sensor
coolant level sensor

And yes, it is crucial on the E34 ..... basically any of the BMW's. Unfortunately, the cooling system is the Achilles heel of these cars. You can shop around on the different parts sites and can get all of the above for ~$650 - $700.

If you don't have it, get the Bentley manual. Follow the procedures exactly, especially the bleeding procedure (follow this to the letter and it should not be problematic). You can do the overhaul in 3-4 hours at a relaxed pace if you have decent wrenching skills

I personally don't buy parts from eBay, but one can find lesser prices there; I just don't feel comfortable putting possibly second rate quality materials in my cooling system when it is a mission critical system on the car.

Steve
__________________
Most problems are usually something simple !

Quote:
Originally Posted by noego View Post
It's Deja Poo - as in, I've heard this **** before.
Steve

Calypso Red 1992 525i with 200K miles

1991 735i - Sold
1992 525i - Sold
1995 325is - Sold
2000 528i - Sold


Last edited by BMR_LVR; 10-18-2011 at 02:48 PM.
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  #9  
Old 10-18-2011, 02:23 PM
TDanza525i TDanza525i is offline
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Wow i guess thats why people say bring my wallet lol
Ill probly do all that in the spring, right now i got to get a new crank sensor and put it in the trunk (the one i have now is a junkyard 1 and i dont trust it 100%)
02 sensor (its running rich and i got i new maf in it)
both ties rod end and an idler arm
also got some gremlins
Do you know if theres a software for these the early 90s late 80s so i can diagnose the car much easier?
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  #10  
Old 10-18-2011, 02:48 PM
BMR_LVR's Avatar
BMR_LVR BMR_LVR is offline
Humble E34 lover
Location: Asheboro, NC
 
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Posts: 5,264
Mein Auto: 1992 525i
Okay, but keep an eye on that coolant system. If you start to overheat, immediately shut the car off and don't let it get into the red on the temp gauge.

There is a program called CarSoft. It works much better on OBDII cars, but is supposed to be good on the OBDI as well.

Also, I editied the above coolant system list to include a fan. Note that you should only use OEM. Aftermarket ones are known to fail and tear up mucho parts when they do

Steve
__________________
Most problems are usually something simple !

Quote:
Originally Posted by noego View Post
It's Deja Poo - as in, I've heard this **** before.
Steve

Calypso Red 1992 525i with 200K miles

1991 735i - Sold
1992 525i - Sold
1995 325is - Sold
2000 528i - Sold

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  #11  
Old 10-18-2011, 03:05 PM
TDanza525i TDanza525i is offline
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Location: Massachusetts
 
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Mein Auto: 1990 525I
i deffinatly will keep a close eye on the that cooling system. i was looking for a software for that car for a while found a baverian technic witch come with free updates for life but it didnt cover the e34. Thanks again Steve
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