M20b25 cam belt tensioner

Post Tue Jan 29, 2013 1:22 pm

Does the above come with the spring? It doesn't show it online on car parts for less??

Post Tue Jan 29, 2013 1:23 pm

Nope, you will need to get the spring from the steelers.

Post Tue Jan 29, 2013 1:28 pm

Rtaylor2208 wrote:Nope, you will need to get the spring from the steelers.

is this spring needed for a cambelt change or just if old one is worn/missing ?
part number ?

Post Tue Jan 29, 2013 1:30 pm

Can't seem to find it on realoem, can anyone help me out and post the link?

Post Tue Jan 29, 2013 1:31 pm

Spring from Bm is less than a pound

Post Tue Jan 29, 2013 2:48 pm

polsta wrote:
Rtaylor2208 wrote:Nope, you will need to get the spring from the steelers.
is this spring needed for a cambelt change or just if old one is worn/missing ?
part number ?

As mentioned below is a cheap part from the steelers and you might as well replace it while your changing the belt and tensioner form piece of mind.

Post Tue Jan 29, 2013 2:55 pm

Mine was missing even though the engine was meant to have had a recent cambelt

Post Tue Jan 29, 2013 3:00 pm

Idol wrote:Can't seem to find it on realoem, can anyone help me out and post the link?

http://www.realoem.com/bmw/showparts.do ... g=11&fg=25

number 18.

Ben

Post Tue Jan 29, 2013 3:07 pm

55p on BM Miniparts.

Post Tue Jan 29, 2013 5:43 pm

The spring is only used to push the tension wheel onto the belt when replacing the belt, once it's in place you tighten the 2nd bolt in the sloted hole which locks the tension wheel in place. The spring is doing nothing then. I can only assume the spring is designed to apply the right amount of pressure on the belt.

Post Tue Jan 29, 2013 7:53 pm

Cool, thanks guys, yeah mine is missing, head has been off a couple of years and just started to refit it, can't seem to find it and would rather buy one than to guess the tension

Post Tue Jan 29, 2013 7:57 pm

BenHar wrote:
Idol wrote:Can't seem to find it on realoem, can anyone help me out and post the link?
http://www.realoem.com/bmw/showparts.do ... g=11&fg=25

number 18.

Ben

Nice one, I looked at this diagram earlier and thought it must be here, but just couldn't see it, but I was looking on the iPhone! Lol

Post Tue Jan 29, 2013 8:03 pm

Kedge wrote:55p on BM Miniparts.

Can't find it on there comes up not found!?

Post Tue Jan 29, 2013 8:10 pm

Idol wrote:
Kedge wrote:55p on BM Miniparts.
Can't find it on there comes up not found!?

They aren't instock, special order so you have to request a price.

Post Tue Jan 29, 2013 9:55 pm

I'll go to the stealers then.

Post Tue Jan 29, 2013 10:43 pm

Idol wrote:
BenHar wrote:
Idol wrote:Can't seem to find it on realoem, can anyone help me out and post the link?
http://www.realoem.com/bmw/showparts.do ... g=11&fg=25

number 18.

Ben
Nice one, I looked at this diagram earlier and thought it must be here, but just couldn't see it, but I was looking on the iPhone! Lol

If the spring is missing, then pin 19 is probably missing as well.
The reason they go AWOL is that it's a pain changing the water pump with the fixed end of the spring pushing it out of line when you're trying to line the bolt holes up with their threads and keep the gasket in place.

Post Wed Jan 30, 2013 8:50 am

Long nose self locking grips ftw! If the spring is missing, you need to take it all apart to check for other craftsmanship.

Post Wed Jan 30, 2013 1:39 pm

Andyboy wrote:Long nose self locking grips ftw! If the spring is missing, you need to take it all apart to check for other craftsmanship.

Second that - the "specialist" who did my head gasket swap obviously didn't tighten the head bolts up properly (or even at all).

Oh, dear, I ask myself, why am I still losing water?

It's cos the f*****g head isn't bolted on!!!!!!!

And yeah, the spring was missing....

Post Thu Jan 31, 2013 6:57 pm

the spring is 0.68p , the dowel pin £3.01 , ordered both today

Post Sat Feb 02, 2013 8:32 pm

Yeah I ordered both too, as well as a new rear quarter for the resto