Re: My 1929 640 has no thermostat, is this correct???

Posted by Jim Eubanks On 2010/7/28 19:02:39

Hello Dave, According to my 29 service manual the 640 has the same thermostat as a 626. It is known as the thermostat sylphon and is located in the housing above the head that the upper hose attaches to. The 640 as well as the 626 also has the shutter thermostat located on the front side of the radiator top inside the grill shell. If your car has a side mounted water pump, would you please provide the fanbelt numbers and mfg, usually stamped or printed on the flat outside of the fan belt.