First stop on the diagnosis train: asking the forum., 1911 sounds like marbles in a tin can. |
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First stop on the diagnosis train: asking the forum., 1911 sounds like marbles in a tin can. |
Optimusglen |
May 15 2019, 11:56 PM
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#1
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Senior Member Group: Members Posts: 909 Joined: 26-February 16 From: Minneapolis Member No.: 19,709 Region Association: Upper MidWest |
A recent occurrence, I'm getting a pretty loud rattle that sounds like marbles swirling around the bottom of a tin can. Everything else seems fine, power etc. Hear it while in neutral and idling and also while driving in gear. It's drown out by wind noise the faster you go.
Engine is a 1.7 punched up to 1911 on dual Weber 40's. Heat exchangers stripped to bare headers, new muffler. Oil pressure and cylinder head temp both normal. |
Optimusglen |
May 16 2019, 08:59 AM
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#2
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Senior Member Group: Members Posts: 909 Joined: 26-February 16 From: Minneapolis Member No.: 19,709 Region Association: Upper MidWest |
I'm leaning alternator bearings... I took this video and uploaded it to Youtube, the noice is certainly coming from that area.
Throw out bearing seems ok, no change when clutch is depressed or released. Also took a look in the fan and all seems well, pulled out a small leaf but that was it. http://www.youtube.com/watch?v=wvZVJYsfrCU |
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