Info Thermostat in Head ?

[c.a.c131]

Hi I am looking on any info regards running the thermostat in the head of a 131 2.0 twincam, I am thinking about doing this to my Panorama engine that I am getting rebuilt   any info as to what I have to do re plumbing & where to get the thermostat etc would be greatly appreciated

[Thotos]

Have a search on the Guy Croft site as this subject is discussed there at length. My engine has the thermostat in the head. I believe the housing in the head needs to be enlarged slightly to take the thermostat. You must make sure your thermostat has a small hole in it to avoid air locks. The thermostat in my car is from a Ford Fiesta. According to people on Guy's website the best thermostat to use is a Unipart item. I can't remember the part number  . As far as plumbing goes, the radiator bottom hose connects directly into the water pump and the T-piece at the top, fed from the head, needs to have one end blocked so it simply connects to the radiator top hose. Ideally, instead of blocking off one end of the T-piece, it's better to have a curved connector from the head to the radiator as water flows better round curves than right angles. My engine has a custom made curved copper connector at the head connecting it to the radiator top hose.   

[c.a.c131]

Have a search on the Guy Croft site as this subject is discussed there at length. My engine has the thermostat in the head. I believe the housing in the head needs to be enlarged slightly to take the thermostat. You must make sure your thermostat has a small hole in it to avoid air locks. The thermostat in my car is from a Ford Fiesta. According to people on Guy's website the best thermostat to use is a Unipart item. I can't remember the part number  . As far as plumbing goes, the radiator bottom hose connects directly into the water pump and the T-piece at the top, fed from the head, needs to have one end blocked so it simply connects to the radiator top hose. Ideally, instead of blocking off one end of the T-piece, it's better to have a curved connector from the head to the radiator as water flows better round curves than right angles. My engine has a custom made curved copper connector at the head connecting it to the radiator top hose.   

Thanks for the info

[Tas131]

Why bother going to the trouble. Fiat obviously thought moving the thermostat out of the head was a good idea. The engine has continuous full flow through head/block with an external thermostat, unlike the no flow or restricted flow through an in head thermostat.

[c.a.c131]

Why bother going to the trouble. Fiat obviously thought moving the thermostat out of the head was a good idea. The engine has continuous full flow through head/block with an external thermostat, unlike the no flow or restricted flow through an in head thermostat.

The 131 it's for will be the way I want it to be and not the way Fiat  intended it to be

[c.a.c131]

I cant find anything on the Guy Croft site about this

[mirafiori76]

Some time ago we had this dispute. I think there is something to say for both options. But Fiat invented one of the greatest engines. It has the thermostat next to the engine. And yes, for a reason. Even the race engines had their thermostat in the same place. There must be a reason.

[cypriot]

I cant find anything on the Guy Croft site about this

http://www.guy-croft.com/viewtopic.php?f=13&t=1832

Here is the link which there is discussion about thermostat location

[c.a.c131]

Thanks