where can I buy 60 degree thermostat?

[contessaman]

so, I've got the cooling system of my 4108 stripped for service.

while its apart, I find that the thermostat operates correctly but looks like a relic from the titanic!

seems prudent to replace it whilst its all apart. From the book the thermostat should operate at 60 degrees on the raw water cooled lump that I have - any hotter and salt will clog up the cooling channels. The stat looks like any other car one other than the much cooler temperature.

but where can I get one? perkins suppliers only carry the hotter stat for indirect cooled engines, and my local motor factor has one that looks the same but its 82 degrees.

any suggestions please?

 

[Billjratt]

Why change something that - as you say - has been working perfectly well for years, and still is, with something that will be an unknown quantity, probably made in China, by people who don't know or care about old marine engines.
Better to save up for a recon heat exchanger then run it hotter so the oil won't sludge so much.

 

[VicS]

Will one from another make of engine fit.
Old directly cooled VP MD11c for example... they open at 60C ... cost best part of £40 though

 

[contessaman]

Why change something that - as you say - has been working perfectly well for years, and still is, with something that will be an unknown quantity, probably made in China, by people who don't know or care about old marine engines.
Better to save up for a recon heat exchanger then run it hotter so the oil won't sludge so much.

did think of converting to indirect cooling then I could run a calorifier too. Trouble is, Im not sure if my engine has the drive for a circulation pump? I would have to change the whole face plate of the engine for that. the access is pretty bad at that end of the motor so that might have to wait for another year!

easiest way I guess is to buy an old donor motor in the form of a heat exchanger cooled 4108. Strip it for parts.

Anyway, for now its going to go back together as it was so I can get some sailing in!

Vic, will google images of the volvo one and see if its similar. mine just looks like a cortina thermostat. Of course if it does fit I'll have volvo prices to contend with which will be a shock after perkins prices!

 

[VicS]

Vic, will google images of the volvo one and see if its similar. mine just looks like a cortina thermostat. Of course if it does fit I'll have volvo prices to contend with which will be a shock after perkins prices!

It looks pretty much like a car one.... long time since I have seen the MD11 one in the flesh, even longer since I've seen a Cortina one (1969 I think)

It might have a larger flange! ... Am I allowed to say that

 

[2Tizwoz]

Will one from another make of engine fit.
Old directly cooled VP MD11c for example... they open at 60C ... cost best part of £40 though

They are typically that price. However This site has one

suitable for a marine Gardner at £8.17 !

Still twice the price of non-marine.

Here's a Perkins supplier that may be able to do a 60 deg. temperature

 

[PCUK]

As an aside, you can run a calorifier off a direct cooled engine. 60º C is quite hot enough!

 

[BobnLesley]

We had the same problem...

with Spring Fever's MD6A engine; actually worse, as the thermostat kept sticking closed. Eventually I bit the bullet and spent £40 0n the proper Volvo one, only to hear that whenever anyone else in the Vega Club had suffered the same problem, they just junked it and 'free'flowed' the cooling water, which is what we did when the new one died three years later. In the next six years/1500+ hours I never noticed any difference or problem whatsoever in not having a thermostat fitted.

 

[Talbot]

Just junked the thermostat on my Fischer Panda Generator / as recomended by the tech support. enables better water flow and less likelihood of overheat/crystalisation.

Bit of a problem if you are heating your water by engine heat though!