8 Cylinder Thermostat

befishers1

I have found several discussions about the 6 cylinder thermostats and plugging the bypass. On an 8 cylinder the bypass is in the neck. Do the same ideas apply with plugging the bypass and drilling a small hole in a modern thermostat? If the bypass is plugged and there is no heater core it appears that the water pump would have no source of intake water. If I leave the bypass open all the time it would appear I would just lose a small amount of cooling as some water wouldn't go to the radiator.

Any ideas?

[Deleted User]

I think you are slightly confused ,drill a hole in the plug you put in the bypass. Not a hole in your new thermostat . The set up should be the same for any model using a bypass type housing.
Roger

Jon B

I'm not sure: is it that you now have a bypass-type setup? If so, is there a particular reason to change it over to non-bypass?

I once had the non-bypass setup on my Terraplane (6). Then for some reason I switched to the bypass system, installing a bypass type neck. In both cases, I had no problem plumbing my heater!

befishers1

I have the bypass neck with the hose from the neck to the water pump, the thermostat closes off the bypass as it opens. I can't find a replacement bypass thermostat so I am looking for a solution using a modern thermostat. I was thinking that if I leave the bypass always open I am losing a good bit of cooling, if I plug it entirely I have no flow until the thermostat opens, so a plug with a small hole makes sense and sounds like a fairly common suggestion here for the 6s. I just wanted to ask if I was missing anything with the different neck on an 8.

Jon B

You may not be able to find the bypass thermostats at your local parts store, but there are still new (old stock) ones out there! I have 3 or 4 extras, think I paid maybe $1 apiece at a flea market. You might try someone like Dave Kostansek or Carl Weber. Pick up a spare, just in case.

Here's one on Ebay now, but I think that, at $8, it's way overpriced! ebay.com/itm/Hudson-1936-52-NOS-Thermostat-/261268138731?pt=Vintage_Car_Truck_Parts_Accessories&hash=item3cd4cb6aeb&vxp=mtr