200 ci puzzle pieces. Pic included.

[Mac]

What is #1 for (in the thermostat housing) ?
What is #2 for (in the water pump)?

As a bonus question, how do you prevent the crank from rotating when you are trying to torque the crank nut to specs??

Thanks!

 

[pedal2themetal45]

#1 is for a manule temp sending unit.
#2 is for one of the heater hoses
Tim

 

[LaGrasta]

what pedal2themetal45 said.

 

[wallaka]

For the bonus round, a block of wood between a crank throw and the side of the block works well.

 

[ludwig]

Or the butt end of a drift in one of the balance holes on the cranklugs.

 

[XFlow_Fairlane]

there is another method.....

I use a phillips screwdriver (or a drift pin) in a flywheel hole at the starter opening. this can be done with the motor in the car so you don't have to wrestle it on a stand. also works good for torqing flywheel bolts down.

 

[Bort62]

or put it in gear

 

[ludwig]

use a phillips screwdriver (or a drift pin) in a flywheel hole at the starter opening.

Come to think of it, that's the method I actually used, not the one I suggested. I just though about that one but he drift shank kept falling out.

 

[wallaka]

there is another method.....

I use a phillips screwdriver (or a drift pin) in a flywheel hole at the starter opening. this can be done with the motor in the car so you don't have to wrestle it on a stand. also works good for torqing flywheel bolts down.

I don't think that the flexplate holes are in a good place to be used like that. It does work well on manually equipped cars, though.

 

[Mac]

#1 is for a manule temp sending unit.
Tim

Guess that's throwing me because I have a temp sending unit near the back of the head. Why two spots for a sending unit... unless the t-stat housing is incorrect.

Thanks for the responses!! -Mac

 

[ludwig]

That is a spare bung and is usually plugged. However, you can insert a T-stat for your electric fan relay there or the cutout for your hot water choke pulloff.

 

[66 Fastback]

On the vehicles with the extra bung up front, was it used for the thermostatic vacuum switch that controlled the manifold/ported vac supply to the distributor?
Doug

 

[63redtudor]

Not sure what the bung for the thermostat housing was for, but there's one on my truck as well. When I went to an aftermarket temp gauge, so I know what the temp actually is, just for giggles I put the old sender in the thermo housing. I decided to leave it there as I now have a good idea as to when the thermostat is opening. Kinda cool to watch anyway.
Edwin

 

[MustangSix]

Thermostat housing with that bung were originally designed to hold a temperature actuated vacuum switch that controlled some specific emissions control devices.

 

[JOHN G]

temp at the back of the block and at the t-stat may differ?

 

[S2261]

Snake a bunch of cotton rope into a spark plug hole.

 

[nitrousnick]

hey,that one in the thermostate housing,isnt that a ported vacuum switch that is broke off?

 

[x21]

My 68's 200 is a bit different, i guess cause it had AC. #1 for me is a for vacuum and #2 goes to the heater.