Whining noise? I'm stumped. - Lateral-g Forums

RBR · #1 05-06-2011, 07:12 PM

Lq9 motor, with TKO600, New clutch and hydraulic throwout bearing.

Put it all together and started hearing a whining noise. It is loudest when idling.

I took off the serpentine belt, still had the noise.
I replaced the throw out bearing and noise with first test run. I also took out a spacer for the throwout bearing.

I push in the clutch still makes the noise?

pilot bearing looked fine?

I'm Stumped!

**Rybar** · #2 05-06-2011, 11:22 PM

Whining as in a squeeling noise? If so I had the same problem and it ended up being the pilot bearing.

**XcYZ** · #3 05-07-2011, 06:49 AM

Maybe you could let it idle in gear on jackstands to see if the noise goes away. Good way to isolate the pilot bearing.

**CamaroAJ** · #4 05-07-2011, 07:53 AM

Quote:

Originally Posted by XcYZ

Maybe you could let it idle in gear on jackstands to see if the noise goes away. Good way to isolate the pilot bearing.

just in neutral with the clutch engaged the pilot bearing doesn't spin free. it only spins when the clutch is disengaged.

RBR · #5 05-07-2011, 07:15 PM

Thinking out loud and with all of your input, I think it must be the pilot bearing. It was new when I did the swap.
After I replaced my throwout bearing I put a little grease on the end of the transmission shaft. I believe it quieted down the pilot but the noise is coming back.
The tranny is coming back out

I'm not sure what I did to damage it? I used a heavy duty one but not sure of the name. I had to damage it on the install.

Hey did I mention the car rip's!!! It's a LQ9 I bought from Jody with his mods, heads, cam, etc. I put it into my 69 firebird. Fun as heck to drive and it just rip's!!1

**camcojb** · #6 05-07-2011, 07:21 PM

Quote:

Originally Posted by ratbeachracing

Thinking out loud and with all of your input, I think it must be the pilot bearing. It was new when I did the swap.
After I replaced my throwout bearing I put a little grease on the end of the transmission shaft. I believe it quieted down the pilot but the noise is coming back.
The tranny is coming back out

I'm not sure what I did to damage it? I used a heavy duty one but not sure of the name. I had to damage it on the install.

Hey did I mention the car rip's!!! It's a LQ9 I bought from Jody with his mods, heads, cam, etc. I put it into my 69 firebird. Fun as heck to drive and it just rip's!!1

I don't remember seeing any dyno numbers................

It should make 525+ crank hp, so maybe 420-450 rwhp, maybe a bit more depending on dyno type. I felt it was a great motor for me on a track car, especially being a fairly low dollar effort. I hope you're happy with it.