Skip to content
View in the app

A better way to browse. Learn more.

Ultimate Subaru Message Board

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

Loose crankshaft bolt?

Featured Replies

If a crankshaft bolt works loose and ruins the crankshaft, is the pulley and related parts still okay? Asking because I will be using some used parts on my engine job. I'm thinking they'd be fine, but wanted to check. Thanks.

Most of the time they are damaged as well. Get used ones that are good.

The harmonic balancer and key are usually ruined before the crank's keyway is damaged.

If a crankshaft bolt works loose and ruins the crankshaft, is the pulley and related parts still okay? Asking because I will be using some used parts on my engine job. I'm thinking they'd be fine, but wanted to check. Thanks.
  • Author

Thanks guys. One other question: does the harmonic balancer part ever wear out? I know that on some GM cars, there is a rubber part in the harmonic balancer that starts to degrade/crack and wear out. I don't know if this is true for subaru.

On my 2.2, the pulley is two-piece, with a rubber layer in between. The holes for factory crankshaft holder tool are in the inner piece.

  • Author

I think it depends what year of 2.2L, Mine is a 1991.

That thin rubber layer is hard to see, because of the shape of the pulley, the dirt, and limited view. But a '91 and a '95 may well be different.

  • Author

The 95 uses different parts that the 91.

One more question, can the tensioner and idler pulleys be reused if the crank pulley came loose?

Thanks.

Subaruparts shows same part number, 12305AA242, for both years.

  • Author

avk, I guess that means that the rubber part can wear out? My car has 15 years and 187K miles!

I don't know enough first-hand to tell how much risk there is. I remember looking at someone's Vanagon conversion site (can't find anymore) showing a salvaged EJ22 they bought with a broken pulley, and timing cover too as a result. As long as you have it off and verify it's a two-piece, might be a good idea to replace it.

Please sign in to comment

You will be able to leave a comment after signing in

Sign In Now

Account

Navigation

Search

Search

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.