Set them to 1 - 1 1/2 turns and re-check the compression. Those valves won't be opening very far at that clearance spec and the cylinders won't be filling. Low fill = low compression = low power On Fri, Jul 18, 2008 at 4:34 AM, Max Wellhouse <dimwittedmoose@cfu.net> wrote: > In my archival searches for information on adjusting the Vanagon 2.1 > engine's valves, I see a plethora of information about setting them > at .006, setting them at 1/4 turn preload, 2 turns pre-load etc., but > those topics are covering fresh rebuilds that have never been started > before. > > I pulled my valve covers off last night to check valve clearances and > to my surprise, checking #3 first(cuz that's where the engine was > positioned, the exhaust must've had 1/16th of an inch of clearance > and the intake about half that. A rainstorm pretty much has > precluded any further checking, but before I do any further > adjusting, I'd be curious as to what the list thinks about the > following items that I've not seen discussed before: > > 1. With an engine that has 70-80k on it(Boston Bob rebuild if that > matters) what should the valve clearances or preload be? > 2. Should the valve clearances/preload be the same regardless of > whether the engine is hot or cold? > 3. Outside of sporadic driving of the van and high mileage, anything > else jump out at you that might be causing a preload/clearance shift > oft his magnitude? > > Compression was like 115/108/105/120 from 1-4 and maybe a leak down > test is in order, but first, I'd like to get the clearance issue > solved before I go any further. > > thank you very much in advance!! > > DM&FS >
-- Jake 1984 Vanagon GL 1986 Westy Weekender "Dixie" Crescent Beach, BC www.crescentbeachguitar.com http://subyjake.googlepages.com/mydixiedarlin%27 |
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