[Peugeot-L] Re: 505 Performance mods

OnIMO the biggest problem in the OE design is the intercooler and the o- ring connections. These engines will take very serious amounts of boost (20+psi) provided the air is cooled enough. When I had my eurospec  N9TE years ago, it took 18psi with minor tweaking (larger inj), except when hot-soaked.

Also, the ball bearing turbos are (IMO) a waste of $$$.

The stock turbo will easily produce over 20+psi, but if you want to always hit that amount of boost a larger turbo will be more efficient (less heating). Careful tho, you will considerably (sp?) increase the lag. I believe the stock turbo (.43 comp trim that is) will peak at about ~25psi with the wastegate always closed.

• In peugeot-L@yahoogroups.com, Brian Holm <peugeots@...> wrote:
  >
  > Have you secured all of the stock parts you will need, including
  > bearings, gaskets, and timing chain tensioner and guides? Some of
  > this stuff is pretty scarce.
  >
  > Brian Holm, Parts for Peugeots
  >
  > At 05:31 PM 2/19/2008, Otis Keith wrote:
  >
  > >The pistons are all new custom blower pistons from Jahanns Custom
  in
  > >So. Calif. They have stronger side skirts along with a thicker
  head
  > >for higher boost pressures. We have a set of head studs, o-ringed
  > >head and block and are using copper head gasket.
  > >
  > > How strong is the block and bottom end? Can we get a new "ball
  > > bering" Turbo or do we have to use the older tech turbos?
  > >
  > >Rabin Rutten-James <rabin505@...> wrote:
  > > Hi Otis,
  > >
  > > What mods have you done to the motor as it stands, and what new
  > > parts are going into it?
  > >
  > > Biggest thing to do is determine your budget. With enough cash
  > > this could be a 500+ turbo monster...
  > >
  > > If you want to stay mostly stock - you can get a custom T3/T4
  > > turbo built from the existing turbo, some larger injectors, and a
  3
  > > bar fuel regulator will have you seeing close to 260 - 280 HP.
  > >
  > > Depending on how custom you want to go, and what your
  fabrication
  > > skills you have, or are willing to pay for - it can go up from
  there.
  > >
  > > There's been lots of discussion of these motors on
  505turbo.com -
  > > so I'd check that out first to see what's been discussed.
  > >
  > > Rabin
  > >
  > > ----- Original Message -----
  > > From: Otis Keith
  > > To: peugeot-L@yahoogroups.com
  > > Sent: Tuesday, February 19, 2008 3:15 PM
  > > Subject: [Peugeot-L] 505 Performance mods
  > >
  > >
  > > I have a 1985 505 Turbo sedan with the engine ready to
  assemble. I
  > >want to ask the pros what Performance mods are available. I want to
  > >upgrade the turbo for more boost. How much boost can these engines
  > >take before it grenades?
  > >
  >
  > Brian Holm, Parts for Peugeots
  > at Peugeot Holm, since 1969
  > 2120 Maple Hill
  > Plainfield, VT, 05667
  > 802-454-7132, fax -1310
  >
  >
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