[Peugeot-L] Re: 405 S questions

Interesting... I thought all PRV's were made of iron...

Now you made me doubt about my ZPJ. I know when I changed coolant last time, I was *SURE* it was iron just by looking at all the yellow/rusty fluid that came out...

Maybe only the heads are iron (ala N9T)? hmmmm....

• In peugeot-L@yahoogroups.com, "Bob Bruce" <bobbruce@...> wrote:
  >
  > It's aluminum alright
  > without the aluminum heads and pan/bearing caps it weighs about 5 lb
  > and looks like it would fit in a boot box
  >
  > It is shockingly small
  >
  > Bob
  >
  >
  > ----- Original Message -----
  > From: Francisco X. Romo
  > To: peugeot-L@yahoogroups.com
  > Sent: Monday, December 03, 2007 4:35 PM
  > Subject: [Peugeot-L] Re: 405 S questions
  >
  >
  > Hi Brian,
  >
  > Are you sure the (zn3j) V6 block is aluminum? I ask cause I know
  my
  OnOn> 605 ZPJ is iron so....
  >
  > --- In peugeot-L@yahoogroups.com, Brian Holm <peugeots@> wrote:
  > >
  > > Mike,
  > >
  > > You would definitely be right if this were an xc, xm, or xn
  engine,
  > > but it's a 405, and I have never heard of a cracked 405 head.
  > >
  > > In my experience with USModel Peugeots, I have found that all
  of
  > the
  > > iron block engines (with the possible exception of the 304,
  with
  > > which I have too little experience) crack heads routinely at
  high
  > > (and some not-so-high) mileages, while none of the aluminum
  block
  > > engines do (xu9-. zdjl, zm-zn-).
  > >
  > > Has anyone found to the contrary? How about with non-USModel
  > Peugeots?
  > >
  > > Brian Holm
  > > Parts for Peugeots
  > >
  > >
  > > At 03:01 AM 12/2/2007, p404c wrote:
  > >
  > > >--- In peugeot-L@yahoogroups.com, "peugfan@" wrote:
  > > >I could pull only the two plugs on either end; the two middle
  plugs
  > > >wouldn't budge. I soaked them with PB Blaster which didn't do
  much
  > > >good, although maybe after a few months....? Could this be
  related?
  > > >Engine feels like it's "running on three cylinders".
  > > >
  > > >Uh oh. I will predict that the head is severely cracked, with
  two
  > > >of the cracks running down the centre cylinder spark plug
  threads.
  > > >
  > > >This happened to me with one of the 404 KF2 Injections some
  years
  > > >ago (1988) when I froze the coolant on a long descent,
  creating an
  > > >airlock and overheat when I was climbing a hill right
  afterwards.
  > I
  > > >cooked the engine even though it ran that way for only about
  one
  > > >minute.
  > > >
  > > >About a year later, the #4 plug was so tight that I broke two
  spark
  > > >plug tools getting it out. The engine seemed to be running fine
  > > >actually. A post-mortem a year later when I scrapped the car
  > > >revealed a nice dislocation-type crack right up the plug hole
  > > >threading. I still have that head (not sure why - souvenir?).
  > > >Years after that I bought a brand new head which I still keep
  in
  > its
  > > >Peugeot box, as insurance against a similar misfortune with my
  404
  > C.
  > > >
  > > >Regards
  > >
  > > Brian Holm, Parts for Peugeots
  > > at Peugeot Holm, since 1969
  > > 2120 Maple Hill
  > > Plainfield, VT, 05667
  > > 802-454-7132, fax -1310
  > >
  > >
  > > --
  > > No virus found in this outgoing message.
  > > Checked by AVG Free Edition.
  > > Version: 7.5.503 / Virus Database: 269.16.8/1154 - Release
  Date:
  > 11/27/2007 11:40 AM
  > >
  >
  >
  >
  >
  >
  > [Non-text portions of this message have been removed]
  >