5-90
NAXJA Forum User
- Location
- Hammerspace
Thanks to Highlander, I finally have pictures of "thermostat drilling" that I've been getting asked for for some time now - I just haven't had a need to pull one out. (If it ain't broke, don't fix it.)
They're up at the RENIXPower group (groups.yahoo.com/group/RENIXPower) in the "photos" section. There are three - two views of the drilled thermostat, and one of the thermostat set in place, so you should get the idea.
Wyn drilled 1/8" holes in the flange, which is just fine, because I have also done so (on reflection, they seemed a little large. However, they worked just fine.) The only thing I'd change would be to relocate the holes closer to the edge of the flange, but not so far that the holes get covered with the mounting surface, gasket, or gasket sealer. His holes are located just fine - it's probably more a matter of preference than anything else. The critical point should come across - one hole should be above the highest point of the valve proper, and the other below the lowest point.
As I have explained before (several times...) the upper hole will allow air to pass OUT of the engine block and into the surge tank/football, and the lower will will allow coolant to go INTO the engine block to displace the air. Doing this mod - probably an extra two minutes' work! - will allow you to fill your RENIX cooling system more easily, and will save you a lot of trouble if, for instance, you blow a head gasket (which pushes gasses into the cooling system. Left unchecked, that will cause an overheat condition.)
Any questions? PM me...
Once again - THANKS WYN!
They're up at the RENIXPower group (groups.yahoo.com/group/RENIXPower) in the "photos" section. There are three - two views of the drilled thermostat, and one of the thermostat set in place, so you should get the idea.
Wyn drilled 1/8" holes in the flange, which is just fine, because I have also done so (on reflection, they seemed a little large. However, they worked just fine.) The only thing I'd change would be to relocate the holes closer to the edge of the flange, but not so far that the holes get covered with the mounting surface, gasket, or gasket sealer. His holes are located just fine - it's probably more a matter of preference than anything else. The critical point should come across - one hole should be above the highest point of the valve proper, and the other below the lowest point.
As I have explained before (several times...) the upper hole will allow air to pass OUT of the engine block and into the surge tank/football, and the lower will will allow coolant to go INTO the engine block to displace the air. Doing this mod - probably an extra two minutes' work! - will allow you to fill your RENIX cooling system more easily, and will save you a lot of trouble if, for instance, you blow a head gasket (which pushes gasses into the cooling system. Left unchecked, that will cause an overheat condition.)
Any questions? PM me...
Once again - THANKS WYN!