

| Subject: | Re: rattle INSIDE engine |
| From: | ROBERT DONALDS |
| Date: | Mon, 5 Sep 2005 11:10:30 -0400 |
now all we need is a piano Al I will send you a spring in good old US mail if you send me you address going slower miles an hour with a pain in my wallet ----- Original Message ----- From: "Al and Sue Brase" <albeeee@MCHSI.COM> To: <vanagon@GERRY.VANAGON.COM> Sent: Monday, September 05, 2005 4:42 AM Subject: rattle INSIDE engine > For the past several years, my 87 2.1 engine has had an internal rattle. > Kind of sounds like a marble vibrating near the distributor. It rattles > a lot faster than a loose valve lifter. Maybe twice a revolution instead > of once every other revolution. This is an engine that I totally rebuilt > about 6 years (60k miles) ago. It had spun a rod bearing. I put in a set > of rebuilt 1.9 rods, reground the crank, new rings, etc. It runs great, > but the oil pressure was a little low. First I just shorted out the high > pressure sensor, but started using straight weight 40w oil for 9 months > a year. That keeps the buzzer off. I wouldn't be surprised that I > boogered something up in the assembly, but if it is a terminal error, it > sure is getting there slowly. > So, anyone have any ideas what might be the source of the rattle? I've > pretty well eliminated all the external sources. > Except possibly the plastic oil vent tower. Is there anything in there > that can get loose and rattle? > My other guess would be the distributor drive. Is there supposed to be > only one thrust washer at the bottom? What determines the end play of > the drive? (One thing that makes me wonder is that the timing seems to > dither when you check it with a timing lite. Maybe moves around 4 > degrees or so.) > If the drive had excessive end play and was smacking up against the > distributor every half turn, that might be my sound! It has about the > right timbre or tone, if you know what I mean. > Any suggestions? > Al Brase > 87 GL, 80 westy, 56 pickup
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