Re: [Peugeot-L] 505 Diesel radiators & heater core by-pass

From: Bob Bruce <bobbruce_at_mts.net>
Date: 04/16/06

I have an XD3T that was leaking thru the head gasket It would leak all the time and keep running If I left the rad cap on it would leak so much coolant into a cylinder that the engine would hydo-lock and not turn over with the starter. But if I turned it over with a wrench it would then spin with the starter. With the rad cap removed it wouldn't leak enough when shut off to hydro-lock. I have since replaced the head and gasket hope someday to get around to installing the injectors ands starting the beast Then all I have to do is install the interior, the windshield, and the lf fender Bob

  • Original Message ----- From: Brian Rodgers To: peugeot-L@yahoogroups.com Sent: Sunday, April 16, 2006 10:08 AM Subject: [Peugeot-L] 505 Diesel radiators & heater core by-pass

  I too am working with a diesel coolant system. I have a 1981 505s TD XD2S   engine. Yesterday I did the valve adjustment. They were not off by much, a   little tight. I spent the rest of the day replacing hoses and generally   investigating my new car. While I have the coolant reservoir off for the   valve adjustment I checked the hoses going to the heater core. One has been   cut off at the firewall the other removed from the right rear head port and   the hose which comes from the cluster by the water pump goes back into the   head bypassing the heater.
  I got this car cheap from a used car dealership because their mechanic said   bubbles in the radiator mean blown head gasket. I wrote about this when I   first joined this wonderful group last Summer. I have decided to drive the   car as it is not blowing out coolant hoses. I investigated the heater core   and it looks like the valve is what was leaking.   Here is my hypothesis: I believe the valve couldn't handle the increase in   coolant pressure due to either an obstruction or a head gasket leak. After   seeing the heater core bypass job, I think this car has been pressurising   the coolant lines for a long time. I am considering installing a valve in   the hose going to the heater core, to protect the heater valve in the   Summer. Any thoughts on this?

  During my investigation under the hood, I am looking at this canister in   front of the vacuum bottle. It has two fuel lines and what looks to be a   fuel reservoir in the bottom. Perhaps a pre-fuel filter/strainer water   separator thing? I can't figure out how to pull it out for maintenance. It   is mounted to the left hand wheel well with plumbers strap, so it may be an   add-on. It has some kind of drain in the bottom, which goes through the   wheel well to the ground. I can't tell if it was original equipment or what.   Please advise

  Sincerely,
  Brian Rodgers

  On 4/15/06, Brian Holm <peugeots@vtlink.net> wrote:
>
> Richard,
>
> The radiators should be equal in performance. There isn't a factory
> hose that will connect your water pump with that radiator, but there
> is an aftermarket one that will work fine. You could use 604 lines
> to connect the transmission with the heat exchanger. That would
> probably be preferable to an external cooler.
>
> Brian Holm, Used and New Parts for Peugeots
>
> At 06:03 PM 4/15/2006, pugmanvancan wrote:
>
> >Hi, hoping someone more knowledgeable than I can give their two cents
> >worth. I have received (thanks Chuck) a replacement radiator for my
> >'85 XD2S turbo diesel. It came out of a 604 TD so is slightly
> >different to the one in my '85 505. Firstly the top hose connects to
> >the same side as the bottom hose and secondly the auto trans cooling
> >lines are on the opposite side. Ok so I can get around the trans
> >cooling by going with an aftermarket cooler but will it make a
> >difference to engine cooling if I now have both hoses connecting to
> >the same side. How does the cooling compare between radiators?
> >
> >Will I have better, worse or the same cooling with the replacement?
> >
> >cheers
> >
> >Richard
> >
>
> 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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