Thermostat
11-26-2003, 06:42 PM
#1
Race Car
Thread Starter
Thermostat
Changing the thermostat and the store didn't have a gasket. Is there anything else I can use? Also is there a certain brand of anti-freeze Ineed?
11-26-2003, 10:46 PM
#2
Burning Brakes
Join Date: Nov 2002
Location: Atlanta, GA
Posts: 919
Likes: 0
Received 0 Likes
on
0 Posts
Did yours have the thick gasket or the thin one. When I needed mine, I went to NAPA. They had the thick gasket but did not carry the thin one. I ended up getting a thin gasket from autoatlanta. As for antifreeze, anykind that is phosphate and silicate free will work.
11-27-2003, 10:30 AM
#3
Race Car
Thread Starter
Don't know yet didn't take it apart. Was thinking of trying it and hoping gasket was still good. That liquid gasket stuff? Thinkitis called rvcor something.
11-27-2003, 02:48 PM
#5
Burning Brakes
I wouldn't advise using a silicon based sealant as bits that are squeezed out internally go round the coolant system and clog up
Use Hermatite or similar if you have to but I would simply buy a sheet of gasket material from a autostore like Halfords and use the old one as a template and cut a new one out of the sheet.
Don't forget to watch out for the rubber o ring
Use Hermatite or similar if you have to but I would simply buy a sheet of gasket material from a autostore like Halfords and use the old one as a template and cut a new one out of the sheet.
Don't forget to watch out for the rubber o ring
12-01-2003, 02:04 PM
#7
Race Car
Thread Starter
Got the gasket. First bought antifreeze for all types of engines. Returned it and went for the phosphate and silicate free antifreeze. Almost bouth it and noticed it said for GM cars. Asked clerk and he siad it is for cars that take Dextrol (?) which is new and it is a new type of antifreeze. Siad it is orange. Is this the right type?
Trending Topics
12-01-2003, 02:06 PM
#8
Race Car
Thread Starter
Originally posted by peanut
Use Hermatite or similar if you have to but I would simply buy a sheet of gasket material from a autostore like Halfords and use the old one as a template and cut a new one out of the sheet.
Don't forget to watch out for the rubber o ring
Use Hermatite or similar if you have to but I would simply buy a sheet of gasket material from a autostore like Halfords and use the old one as a template and cut a new one out of the sheet.
Don't forget to watch out for the rubber o ring
Is there a gasket in addition to the rubber O ring? No place I went to has the gasket on file. thay just give me the O ring.
12-01-2003, 02:25 PM
#9
Pro
Join Date: Mar 2002
Location: Northern VA
Posts: 577
Likes: 0
Received 0 Likes
on
0 Posts
Dexcool should only be added to a system running Dexcool already. Don't mix them. The appropriate answer to the "which antifreeze?" question really is: whichever brand/color is in the car already. If it's green, go with the green.
12-01-2003, 02:35 PM
#10
Race Car
Thread Starter
I am flushing the system and changing the thermostat. don't know what was in there previously and I added green before I realized that there are different kinds. If I am emptying the system what should I use? Is there silicate and phosphate free that is green?
12-01-2003, 04:34 PM
#11
Burning Brakes
sorry if my post confused you jeeper
I have never replaced a thermostat on a 944. When you mentiuoned a gasket I thought you were refering to an associated part of the coolant system plumbing
As far as I can see from the Haynes manual the thermostat is retained inside the housing by a retaining circlip and sits on a rubber o ring seal.
I think if I had to do mine I would buy the retaining clip as well as a new rubber o ring cos I'm bound to bu**** up the clip getting it out
hope it goes smoothly
I have never replaced a thermostat on a 944. When you mentiuoned a gasket I thought you were refering to an associated part of the coolant system plumbing
As far as I can see from the Haynes manual the thermostat is retained inside the housing by a retaining circlip and sits on a rubber o ring seal.
I think if I had to do mine I would buy the retaining clip as well as a new rubber o ring cos I'm bound to bu**** up the clip getting it out
hope it goes smoothly
12-01-2003, 09:39 PM
#13
Race Car
Thread Starter
I do have 45 degree snap ring pliers. Still wondering about the antifreeze. Do they make green that is silfite and phosphate free or do i need the orange?
12-02-2003, 12:08 AM
#14
Addict
Rennlist Member
Rennlist Member
Join Date: Oct 2002
Location: Granite Falls, Washington
Posts: 1,637
Likes: 0
Received 2 Likes
on
2 Posts
The text below is excerpts as printed out in a TSB dated Aug. 1994. affecting models 924,944,968 and 928.
Concern:
Use of aproved phosphate free anti-freeze in Porsche all aluminum engines.
All full aluminum water cooled Porsche engines should only use approved, phosphate free anti-freeze. This anti-freeze may be obtained from Audi/Volkswagen or Mercedes Benz dealers under the brand names “Autobahn” and “Mercedes Benz” respectfully. Where available, “Zerex Extreme 450” may also be used.
Important note: Anti-freeze with ethylene glycol or propylene glycol base is available; however, anti-freeze with a propylene glycol base is not approved for Porsche vehicles.
The corrosion protection and anti-freeze characteristics of propylene glycol are different, although their physical characteristics are similar. A simple test is not possible to differentiate between the two.
If propylene glycol is used or added to a Porsche vehicle or if it is not known what type of anti-freeze has been used the anti-freeze should be changed completely to an approved brand.
Following two paragraphs are from TSB dated Dec. 1986 regarding Cooling System Corrosion.
Porsche recommends phosphate-free coolant, which has additives to prevent corrosion in the cooling system in addition to the glycol. Some of these additives, however, do not have sufficient aging stability. (That’s why you change coolant every 30k miles or 2 years, right?)
The corrosion dirt circulated in the coolant circuit will rub freshly protective coats off the inside of the cooling system components. The protective coat must then be built up from new, resulting in faster consumption of these protective additives (e.g. silicate for aluminum)
Now, my suggestion is……..quite worrying about the color. READ the ingredients on the jug. HTH
Concern:
Use of aproved phosphate free anti-freeze in Porsche all aluminum engines.
All full aluminum water cooled Porsche engines should only use approved, phosphate free anti-freeze. This anti-freeze may be obtained from Audi/Volkswagen or Mercedes Benz dealers under the brand names “Autobahn” and “Mercedes Benz” respectfully. Where available, “Zerex Extreme 450” may also be used.
Important note: Anti-freeze with ethylene glycol or propylene glycol base is available; however, anti-freeze with a propylene glycol base is not approved for Porsche vehicles.
The corrosion protection and anti-freeze characteristics of propylene glycol are different, although their physical characteristics are similar. A simple test is not possible to differentiate between the two.
If propylene glycol is used or added to a Porsche vehicle or if it is not known what type of anti-freeze has been used the anti-freeze should be changed completely to an approved brand.
Following two paragraphs are from TSB dated Dec. 1986 regarding Cooling System Corrosion.
Porsche recommends phosphate-free coolant, which has additives to prevent corrosion in the cooling system in addition to the glycol. Some of these additives, however, do not have sufficient aging stability. (That’s why you change coolant every 30k miles or 2 years, right?)
The corrosion dirt circulated in the coolant circuit will rub freshly protective coats off the inside of the cooling system components. The protective coat must then be built up from new, resulting in faster consumption of these protective additives (e.g. silicate for aluminum)
Now, my suggestion is……..quite worrying about the color. READ the ingredients on the jug. HTH