Vanagon EuroVan
Previous messageNext messagePrevious in topicNext in topicPrevious by same authorNext by same authorPrevious page (April 2006, week 5)Back to main VANAGON pageJoin or leave VANAGON (or change settings)ReplyPost a new messageSearchProportional fontNon-proportional font
Date:         Sun, 30 Apr 2006 00:45:16 -0400
Reply-To:     "Daniel L. Katz" <katzd54@YAHOO.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         "Daniel L. Katz" <katzd54@YAHOO.COM>
Subject:      Re: idle and black tower

list:

i re-routed blow-by direct to intake manifold, essentially with a T fitting on the vacuum side of the auxiliary air regulator. engine seems very contented with this fix, and idles well. preliminary verdict is that idle problem is fixed, and blow-by is properly handled. also, lower crankcase pressures should lower air resistance to moving pistons, and provide a slight edge in terms of overall efficiency.

a future project may be to vent the engine to the atmosphere via one valve cover, and install a pcv valve bewteen black tower and intake manifold, essentially converting to a true positive crankcase ventillation system. this would certainly be a plus for the engine oil, and otherwise help limit gum and sludge. a blow-by/air mixture is much more combustable than blow-by alone, however, and so the action of the pcv valve to block possible front-fires from propogating into crankcase via black tower is necessary. worry here might be that the restricting action of the pcv valve combined with an inadequately vented engine could lead to high crankcase pressures, under certain conditions at least, resulting in all sorts of problems, and i'll probably just leave well enough alone.

looking at long ago posts, the black tower certainly has baffles - perhaps also a flapper valve of some kind that is usually destroyed on older engines; i've never taken one apart myself.

all's well that idles well!

dan


Back to: Top of message | Previous page | Main VANAGON page

Please note - During the past 17 years of operation, several gigabytes of Vanagon mail messages have been archived. Searching the entire collection will take up to five minutes to complete. Please be patient!


Return to the archives @ gerry.vanagon.com


The vanagon mailing list archives are copyright (c) 1994-2011, and may not be reproduced without the express written permission of the list administrators. Posting messages to this mailing list grants a license to the mailing list administrators to reproduce the message in a compilation, either printed or electronic. All compilations will be not-for-profit, with any excess proceeds going to the Vanagon mailing list.

Any profits from list compilations go exclusively towards the management and operation of the Vanagon mailing list and vanagon mailing list web site.