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RB26DETT timing belt deflection ?

bigboss59400
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bigboss59400 Community Regular

bigboss59400

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Hello,

I changed my timing belt but I think I tight it too much (I can twist the belt at about 45 degree like it seems to be) however I heard it singing or maybe that's the accessories one anyway I found the timing belt deflection for the accessories belt but not for the timing one.

I only found that it must be tight to 200nm...how can we check that with the tensiometer ?

I look into the R32, R33 and R34 manuals but always this info...

Best regards

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https://www.sau.com.au/forums/topic/478199-rb26dett-timing-belt-deflection/
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hardsteppa Grand Master

hardsteppa

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Tightened to 200 nm? It's not measured like that. The tensioner spring sets the tension. Did you follow the workshop manual instructions? It is fairly straightforward once you understand the steps, and there is a full thread on here about it for further tips.

bigboss59400 Community Regular

bigboss59400

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Thanks for your reply,

Yes I follow the manual and also some online topics like this one.

Timing+Belt+Alignment+and+tension+adjust

https://www.sau.com.au/forums/topic/397602-how-to-replace-a-timing-belt-202526-pics/

However there is no indication on how to measure it whereas for the accesories belt they are (see attachment).

And I'm looking for something more precised than 1/4 turn since it looks like I set it wrong using this approximative method...

They are refering to a tension of 200N (sorry N not Nm); I'm not talking about the tightening torque of the bolt

Best regards

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GTSBoy Grand Master

GTSBoy

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The 200N of tension is the literal stretch tension in the belt. That's the tension that the spring in the tensioner should apply before you lock it up, and should therefore also be the same tension in the belt after it is locked up, until it stretches a bit.

The 1/4 turn thing is going to vary according to the belt. Some might be a little more flexible than others. Just pushing straight on the belt should produce a little deflection, but not a lot, and you should be able to push pretty damn hard without the belt moving a lot. Beyond that, it's not really possible to do it up too tight unless you do the wrong thing with the hex key while tightening up the tensioner. You shouldn't be trying to add much force to what the spring provides.

 

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