900rpm rattle

[dragosa]

I purchased new to me 2011 ssv with 126k miles.

I replaced sparkplugs, knock sensors ( one had failed wire ), upstream oxegen sensors, evap celenoid, intake manifold gaskets and water pump.

She drives like a champ now . Huge difference in performance, and fuel economy.

I am only concerned with this strange rattle at 900rpm. I can hear it in drive troughs and enclosed spaces ( between walls ) otherwise no idle rattle, or any drivabilty issues.

Should i be concerned?

I am trying to post videos but have issues doing so here.

Any suggestions, i checked that little shield on the exaust, it does not seem loose.

Thanks

 

[S20Workstation4]

Check the heat shield on the muffler side, the runs from the passenger side catalytic converter to the muffler.
It's a pretty big one, and will rattle loudly when it comes lose.

Since it's only at a certain RPM, you can rule out any major valvetrain/engine rattles.

 

[dragosa]

Do we know if the 2011 have an updated Timing and Valve-train Components or they are all pretty much the same?