2004 Subaru WRX STi with engine, clutch or trans issues

STi with 20g and supporting mods installed and pro tuned about 300 miles ago - the car was stock its whole life before this work was done. New ACT clutch installed at the same time as the engine upgrades. After 200 miles, noticed a strange sound on startup and idle. Parked the car thinking engine damage. Thoughts there was a spun rod bearing from speaking with the tuner. Changed the oil (Rotella Synthetic 5w40 w/ less than 1k miles on it) and did a compression check. No obvious issues. Restarted the car and the noise was gone for 100 miles of daily driving. Started the car up and am now getting the noises recorded here.

The noise clearly changes whether the clutch is in or out. There is noise regardless, however. Just different. The noise is also somewhat inconsistent. This is probably apparent in the video. The issue sounds somewhat like a rod bearing to me but it is pretty odd that the noise would change with the clutch in vs. out. Also, it is strange that this issue went away for a short period of time. My understanding was that once you have a spun bearing it does not hide itself.

Category:

Autos & Vehicles

Tags:

• rod
• bearing
• subaru
• sti
• act
• 20g
• mechanic
• engine
• clutch
• transmission

[2001stook]

The clutch is a brand new ACT clutch installed with the 20g. It should hold the power just fine. Clearly a mechanical issue, not an issue with the clutch holding the power.

I will check the tensioner. That should not be affected by the clutch operation though so seems like a long shot.

[stairmaster3001]

it sounds like u ran it a lil low on oil and toasting bearings

[rorysamson]

I just had a ACT clutch installed myself and it to is making a god awful sound. Especially when I down shift.

[adunn225]

why are you using 5w 40?

[That1314Dude]

So what was the issue??

[uwanaugoda]

well theres your problem your outa gas!

[srninjastar]

always use the oem throwout bearing. never use the crap that clutch kits provide. they tend to bend and shatter.

[zaya417]

I have a mazdaspeed 6 and I bent my clutch plate and it sounded just like this, but it got worse when I pressed the clutch in not out. But I garentee you it is not a rod bearing, it is something in the clutch housing.

[TypeTuber]

Did you ever fix this? That sounds a lot like a clutch throwout bearing to me.

[ilio84able]

i thing that these noise coming from the clutch bearing.this is it