engine and drivetrain Questions About Washers Used With Timing Cover Bolts And Water Pump?

[2002dean]

Now that I have obtained all the proper bolts to reinstall my front timing covers, I now need to get the proper washers for underneath the bolts. Looking at real oem the M6 bolts list a wave washer. The M8 bolts show a washer and number but it's not listed. I assume these would be a wave washer also. At the hardware store they have spring washers which look very similar to the picture of a wave washer. Are these the same thing? Could a flat washer be used instead?

The water pump also shows washers underneath the bolts but aren't listed. The 3 M8 bolts also are used to fasten the lower timing cover. Wave washers as well? Wave washers on the 3 remaining M6 bolts for the water pump?

 

Any help is appreciated. After this gets ironed out the engine can be put back together.

Dean

[pkchopp]

Dean, BMW always used wave washers, never split. The theory was why use a washer with a built in fatigue point.

Edited June 2, 2014 by pkchopp

[esty]

not knowing, i googled spring washers wave washers and it seems as if they both would be correct, doing the same thing, serving the same purpose

[jimk]

Dean, BMW always used wave washers, never split. The theory was why use a washer with a built in fatigue point.

Split washers also chew the hell out of aluminum.

[TobyB]

yeah, 'Belleville washers' stuffed into the Google will get you a thicker version of what BMW used.

 

They work great.  I use them everywhere.  Even in the bathtub.

 

t

[2002dean]

yeah, 'Belleville washers' stuffed into the Google will get you a thicker version of what BMW used.

They work great. I use them everywhere. Even in the bathtub.

t

Thanks for putting me in the right direction. Unfortunately very few washers were used by whoever put this thing together before and what was used were just flat washers. The prior poor work has led to a lot of questions. I'm trying to get this back together as correctly as possible.

Do you have a source for these?

Dean

Edited June 3, 2014 by 2002dean

[Conserv]

...

Do you have a source for these?

Dean

BMW still sells the metric wave washers (try BLUNT), some hardware stores sell metric wave washers, lots of online hardware specialists sell metric wave washers. I Googled "yellow zinc metric fasteners" and the first non-sponsored site that came up was this:

https://www.belmetric.com/metric-washers-c-4.html?zenid=an43vhp2i7rj3a5ug94tsbrmd0

Coincidentally, I've used Belmetric previously for metric fasteners and received high-quality fasteners.

Good luck,

Steve

[2002dean]

BMW still sells the metric wave washers (try BLUNT), some hardware stores sell metric wave washers, lots of online hardware specialists sell metric wave washers. I Googled "yellow zinc metric fasteners" and the first non-sponsored site that came up was this:

https://www.belmetric.com/metric-washers-c-4.html?zenid=an43vhp2i7rj3a5ug94tsbrmd0

Coincidentally, I've used Belmetric previously for metric fasteners and received high-quality fasteners.

Good luck,

Steve

I was just wondering if he had a go to guy.

Thanks for the link to Belmetric. I'll be calling them today.

Dean

[Slightly Larger Roundies]

If you have a Fastenal store in  your town, they have metric wave washers.

[BillWilliams]

There are about seven places BMW used split washers on the 2002.

[2002dean]

There are about seven places BMW used split washers on the 2002.

 

Where? It will be useful to me as I try to straighten my car out.

Dean

 

[BillWilliams]

Go to REALOEM and search on part number 7119900052

[pkchopp]

Gee Bill, According to YOUR post on 5/6/2012 "Wave washers only, The Germans never used a split washers on the 2002".

[TobyB]

I usually go to Stone Way Hardware, myself...

 

t

[Napes]

I was able to get metric wave washers at my local Ace Hardware.

 

Bob Napier

Edited June 4, 2014 by Napes