Rattling noise when engine goes over 3.5k rpm

[laziazn]

Can u guys help me out with this problem? my engine finally came out of the shop and it was running smoothly. brian crower cams, new headgaskets, etc. the problem is that when i drive it i hear some rattling noise when im around 3.5k.. i havent even touched redline and i hear a little bit of rattling. is it normal? cuz i have a megan downpipe, test pipe, and a STOCK exhaust with a tip haha... (changing to Hi Power or Apex N1 dual) CAN SOMEONE please help.. Thanks

[DRIFTING_SIL_EIGHTY]

help us help you by pinpointing what area its coming from. shoot i could tell you to check your muffler bearings or your blinker fluid. be a bit more descriptive where the noise is.

[shade]

Motor balanced or no? New unbalanced driveshaft? Any rotating mass not balanced?

[JRas]

you should be able to give us an idea of where it's coming from

example: trunk, passenger door, underneath your seat, engine bay, and such

[DarkPhoenix]

And if the problem is only happening under load, or when you are free revving.

[laziazn]

im sorry that i wasnt too descriptive. so here it goes. the rattling comes from the passenger side(right side) around the engine bay and underneath the car, and it also rattles when i just have it idling. It becomes even louder when i go over 3.5k. is it because i have a test pipe with a downpipe running into a stock exhaust?

[lilredstiffy]

loose flywheel/clutch assembly, rod knock, or timing chain components would be my guess

[longhorntx09]

bad timing chain tensioner ?

[Mi Beardo es Loco]

flywheel imo

[2ilvia]

definitely has to be the wobbler shaft, its over-balanced

k serious time, rattling sounds like the timing chain, mine had a rattle and it was an exhaust shield, i dont think its got anything to do with the exhaust

[travypoo]

my sr made a loud rattle noise over 3500 rpms last season, turned out the turbo elbow was half cracked and was twanging

[Zenki_S14]

You said your car was brought into a shop. What was done to it?

[sileightyfreak]

hmmm... it might jus be normal. u mentioned that u had upgraded cams, right? my buddy eric was working on a supra for timing, and the motor seemed like it was rod knocking:bite: . in the end, it was the cams that made the sounds. thats wat im guessing

[aNskY]

solid motor mounts will create a resonance around 3500rpm.....