I don't believe that with the high compressions required of a diesel engine it is possible to have a non-interference design. To get the high compression there is VERY little space at TDC. I don't think there is any way to design around that. If the valves were recessed into the head then there would be more space underneath them.
The proportion of displaceable space (where the piston travels) to non-displaceable (everywhere else) has to be very high (20:1 or maybe 22:1) to get this compression. That doesn't leave much of a possibility to play with. I don't think in this matter there's any way to blame the engineers. I could be wrong, but I would be shocked to hear if anyone has any evidence that a diesel engine was non-interference. (Tho come to think of it, some of those lower compression super low rpm old time boat diesels might be that way.) Erik On Mon, 7 Mar 2005 22:29:12 -0400, John Wilson <[EMAIL PROTECTED]> wrote: > >Audi, Honda, Volvo, VW and others have been >using interference designs > for over 25 years. In >fact, most high compression engines are > >interference designs. > (Reply) > Well why not! It is a great way to sell parts, make profit and burn fossil > fuel.. It would change if there was proper consumer legislation and the > offending companies had to pay the repair bill when engines designed with > interference, interfered. _______________________________________________ Biofuel mailing list [EMAIL PROTECTED] http://wwia.org/mailman/listinfo.cgi/biofuel Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuel archives at Infoarchive.net (searchable): http://infoarchive.net/sgroup/biofuel/
