 Weird timing mark anomaly, Bus case, unknown internals |
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| IronHillRestorations |
 Jul 2 2020, 07:32 AM
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#1
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I. I. R. C.  Group: Members Posts: 6,724 Joined: 18-March 03 From: West TN Member No.: 439 Region Association: None 
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I'm working on a customer's car and it's got a Bus case. The owner said it's got Mahle p&c's, a "3/4 cam", and "oversize valves". He didn't know he had a Bus case, and not sure what other Bus components are in the engine.
I'm chasing some oil leaks and sorting things out a bit, and I found the TDC mark on the flywheel and impeller do not line up, there's 3-4 degrees difference between the two. The 009 distributor (to be replaced) is about 90* off from where a 914 should be, which is easy enough to resolve. I have no experience with Bus engines, and wondered if the flywheel and impeller are indexed differently than a 914. Any thoughts? |
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Replies(1 - 3)
| 914Sixer |
Jul 2 2020, 09:33 AM
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#2
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914 Guru Group: Members Posts: 8,897 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region
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Everything should be the same across the type 4 engine line. Other than lower compression pistons the bus internals should be the same.
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| JOEPROPER |
Jul 2 2020, 10:32 AM
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#3
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The answer is "no" unless you ask... Group: Members Posts: 1,184 Joined: 21-November 15 From: White Plains New York Member No.: 19,387 Region Association: North East States
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I think some fans have timing marks in different locations. They will fit and work fine but the marks make it hard to set the timing.
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| Mike D. |
Jul 2 2020, 02:39 PM
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#4
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OK, It runs now, and pretty good too! Group: Members Posts: 1,445 Joined: 3-January 03 From: Santa Clarita, Ca Member No.: 85 Region Association: None
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Bus fans are typically viewed from the front, not the top. And the have a timing gauge on the front of the fan shroud. Also make sure your not seeing some other degree mark, depending on the fan they could be all over.
Good Luck (IMG:http://www.914world.com/bbs2/uploads_offsite/www.thesamba.com-85-1593722374.1.jpg) (IMG:http://www.914world.com/bbs2/uploads_offsite/www.thesamba.com-85-1593722375.2.jpg) |
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