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Date:         Thu, 30 Aug 2007 19:00:28 -0700
Reply-To:     Jake de Villiers <crescentbeachguitar@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Jake de Villiers <crescentbeachguitar@GMAIL.COM>
Subject:      Re: Mechanical tests for my spare air cooled engine?
Comments: To: Matt Roberds <mattroberds@cox.net>
In-Reply-To:  <Pine.LNX.4.64.0708302040371.18039@birdbird.example.com>
Content-Type: text/plain; charset=ISO-8859-1

Neil, I have a spare bell housing if you want to go all out and do a compression test as well.

On 8/30/07, Matt Roberds <mattroberds@cox.net> wrote: > > > From: neil N <musomuso@GMAIL.COM> > > Date: Wed, 29 Aug 2007 21:57:31 -0700 > > > > Aside from a compression test, measuring end play, (and of course > > installing and running!) are there ways to tell if there's anything > > totally wrong with a given 2.0 air cooled engine? (like spun bearing > > etc.) > > If you can do a compression test, you must have a bellhousing or the > little cast piece that lets you put a starter on it. Depending on how > dressed up it is (does it have its FI computer+harness, or is that stuff > still in the van?) you're not too far away from being able to start and > run it. > > It might be worth taking the heads off to take a look at the insides of > the cylinders, the valves and seats, etc. If you pull a cylinder, you > can see inside the engine a little... maybe not enough to see a spun > bearing, though. > > Oil analysis has been mentioned. The small airplane people (who, by and > large, are running flat-four and flat-six air-cooled engines) often do > this, but the opinion there seems to be that it's more of a trend > monitoring thing rather than a one-shot. One idea I've heard is that it > takes three oil changes and analyses to establish a baseline, *then* > further tests can reliably tell you if something is starting to wear at > a high rate. > > Matt Roberds >

-- Jake 1984 Vanagon GL 1986 Westy Weekender "Dixie" www.crescentbeachguitar.com


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