 Std main bearings unobtanium? |
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| MajorMojo |
 Jan 8 2026, 12:47 PM
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Newbie  Group: Members Posts: 4 Joined: 16-August 22 From: Canada Member No.: 26,779 Region Association: Canada  |
I'm looking for a set of std size main bearings for my '72 1.7. Mahle part 021 198 481 A. Every single parts supplier I've found online (and my local machine shop) says they are out of stock. Are they NLA or something? There has to be some sitting in a warehouse somewhere...
Anyone have any insight into this situation or potential source for me? Thx |
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| Jack Standz |
Jun 19 2026, 10:36 AM
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Senior Member Group: Members Posts: 841 Joined: 15-November 19 From: Happy Place (& surrounding area) Member No.: 23,644 Region Association: None 
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QUOTE(neyen14 @ Jun 19 2026, 10:37 PM)  Seems like main bearings are still not available anywhere. I'm looking for STD-Case, .025-Crank...... Someone mentioned Silverline being out of business but I see on AA website for type 4 914 engine STD-case and either .010, .020, 0.30.... whereas usually I see .025, .050? The way I understood was that the first working of a crank was .025 and the second would be .050. Can anyone help clarify .010, .020, .030 and would that be compatible? Generally, crankshafts are turned to the next smaller size that cleans up the journals. You don't want grooves and you do want round journals and consistency for all journals. Standard undersized crankshaft main journals are -.010, -.020, inches, etc. It'd be best to measure your crankshaft to ensure what size the main and rod journals are. This is something you should do for brand new crankshafts and especially refurbished ones. Careful measurement will lead you in the direction you need to go, including if the crankshaft needs more work to clean it up. Best wishes for your project! And with finding bearings. We had the same problem months ago and we got "lucky" and found the proper sized bearings for two motors we are working on. |
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Posts in this topic
MajorMojo Std main bearings unobtanium? Jan 8 2026, 12:47 PM
porschetub
I'm looking for a set of std size main bearin... Jan 8 2026, 02:58 PM pfreiburger Hello - After some searching, I found that LN engi... Jan 9 2026, 12:38 AM cgnj Silverline is out of business. Last set I bought t... Jan 9 2026, 12:45 AM 914Sixer I have a set of standard main bearing made by ITM. Jan 9 2026, 07:06 AM VaccaRabite This happens from time to time. There was a beari... Jan 9 2026, 09:44 AM MajorMojo Thanks for the info. I made some more calls and 1)... Jan 9 2026, 11:51 AM neyen14 Seems like main bearings are still not available a... Jun 19 2026, 09:37 AM
ChrisFoley
Seems like main bearings are still not available ... Jun 19 2026, 10:26 AM
Montreal914 They are in .010" increments, which is pretty... Jun 19 2026, 11:10 AM cgnj @neyen14
You will need to confirm your case firs... Jun 19 2026, 03:01 PM Jack Standz You can measure the case and crankshaft with a mic... Jun 19 2026, 10:46 AM |
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