Belt Tensioner Stud Broke

[JET200]

Hi everyone

Just got our R32 GT-R running again and something gone wrong already.

Driving to airport and back in traffic a noise started that sounded like engine fan rubbing on shroud. Car still drove pefectly fine. When I got home I opened engine and could hear the noise had gotten louder and putting my hand on thef ront engine cover could feel the vibration and noise.

Removed fron cover and belt is loose and tensioner on drivers side isn't doing anything. Belt has rubbed on inside of cover and started to shred but put engine to TDC and everything lined up fine so cams haven't moved at all.

Removed balancer etc and found that the stud that holds the tensioner ( drivers side one with spring ) had completely snapped off and I'll ahve to get a thread removal guy to come out and pull out the broken stud and put new one in.

Question is, has anyone ever seen this? Or have a potential reason why it might happen?

Before you ask, I changed timing belt and both tensioners before putting engine in so has done around 1000km on 11psi and 180kW@wheels. Was done up correctly etc.

[GTR-N1]

After a 200,000km service on a daily and as I took off from a set of lights, a fulcrum bolt bent over causing the timing belt to shred. The car stalled.

The car of course lost all compression. I was very fortunate that the valves didn't kiss Andrew.

[MrStabby]

You could have searched

http://www.skylinesaustralia.com/forums/topic/284557-snapped-the-timing-belt-idler-bolt/

http://www.skylinesaustralia.com/forums/topic/290065-bolt/

[JET200]

Those searches are for the idler BOLT

I broke the tensioner STUD

[ydr030]

my mates 3litre did it, but that thing was like 300,000kms,

[JET200]

Anyone heard of Gates timing belts being too stiff/tight etc and causing it?

Might put genuine NIssan one in instead