Excessive Wear On Timing Belt Rb3025

[SkudR33]

Hey guys,

Had a quick look over my engine bay today to just make sure everything is doing okay... I noticed that the outer surface of the timing belt is excessively wearing against the tensioner bearing to the point where the edges of the belt are getting sticky.

Some background information... The motor is a rb3025 and I'm running the two tensioner setup with a dayco 152 tooth belt. This motor was freshly built last year and I've only done about 3500km's since.

Has anybody ever had this problem before? Does anybody know what may be causing this problem?

Thanks in advance guys!

[r32-25t]

Is the plate between the timing gear and the balancer on there?

[SkudR33]

Is the plate between the timing gear and the balancer on there?

Yeh, I ran my inspection camera to check.

Also the belt doesn't have much play in it while it's rotating.

[tridentt150v]

Hows the tension? And hows the tensioner bearings? One could be sticking or not freely rotating/lagging?

[R33 Jared]

When it idles is there any wine? As if a supercharger type sound? Normally it can only be heard when warm. If so our 26/30's timing belt was simply too tight, replaced cam gears and timing belt and backed it off a notch; no worries.

[SkudR33]

Both tensioners are spinning freely, no issues there. Also the belt does not whine at all - seems to be tensioned fine.

Is it possible that the belt is faulty?

[tridentt150v]

Wasn't sprayed with TAC2 or something was it? A coolant leak spraying onto the belt??? Seems unusual. Time to replace for peace of mind.

[SkudR33]

Wasn't sprayed with TAC2 or something was it?

Honestly feels like it was! Lol

I definitely didn't spray anything on it when I installed it. There is abit of oil build up around the bung that I've put in place of the VCT solenoid but the black crap that's building up on the belt is just way too tacky to pass as oil build up.

It seriously feels like that black gasket maker paste...

I'm gunna have to replace the whole timing kit - timing belt is way too serious to be overlooked.

[Ben C34]

Could be rubbing on the timing belt cover. Mine did the same.

[SkudR33]

Could be rubbing on the timing belt cover. Mine did the same.

Front top cover isn't on... Can I ask did the residue it was creating feel tacky sticky. Like I couldn't get the black shit of my hands without giving them a decent scrub in mechanics soap.

It could possibly be rubbing on the bottom cover or on one of the bearings...

Thanks for the opinions! Really trying to get as much info as I can before I replace the timing kit.

[tridentt150v]

Time to take the lower cover off.........and watch the missing socket fall out