Forgot to Change Pilot Bushing Auto > Manual, Strange Sounds

[DrKarrot]

I recently swapped a ka24de into my sohc chassis. Used the single cam trans, but forgot that the motor was originally from an auto, and did not swap out the bushing for a new manual pilot bushing.

The clutch alignment tool fit fine, no play, and the transmission mated fine. The car drove great for a good 30-40 miles, but now makes a very loud whirring when the clutch is being let out at mid-high rpms, especially in 2nd & 3rd. Also can replicate the sound in neutral by revving to >2000rpm and letting the clutch out, where it sounds like a very loud whirring clunk.

Is this likely that pilot bearing? Everything I found stated that the inner diameter of the auto bushing was smaller and you physically could not mate the transmission or get the alignment tool in.

[rellik27]

I know it sucks dude but take the transmission out and have a look before it gets worst, and change the plot bushing. That way you'll have that worry out of your mind.

[jedi03]

dunno...my release bearing is particularly noisy too...

[kruked]

Are you sure that your de was previously an auto?
It's a possibility that if it was, the auto pilot bushing was so far shot that that's the reason why your standard Trans mated relative easy. Or because someone already took out the auto pilot bushing.

[Nissan2nr22]

Sounds like throwout bearing/pilot bearing better change it out asap