replacement rad cap and thermostat.

[bryan_damone]

Does anyone have any brands and part numbers for a suitable rad cap and thermostat for an Invader.

Thanks

[gixxer6]

I have taken my original radiator cap into my local NAPA autoparts store and matched it up.  I couldn't get the exact psi rated cap, so I went with 1 psi higher. 

I have never heard of a replacement thermostat, I have never seen, or heard of one go bad either...  Did you have one fail?  I'm sure I have a good used one if needed.   

[bryan_damone]

Do the thermostats ever fail open. Seems like I have a hard time warming up. Temp gauge only begins climbing if you leave it idling and/or drive around slowly. Soon as I hit some snow, the temp drops immediately. I thought the thermostat would be able to regulate the engine temps a little better.  If this is normal, let me know. Of course I will pull it out and take a closer look when I have the chance.

I just saw that rad caps and thermostat are on sale at Parts Source in Ontario so I thought I would grab some spares.

[mswyka]

We have the NAPA part number at home for a 13 psi replacement cap.  Our invader runs cold when there is plenty of loose snow to keep the tunnel cool and runs hot when snow is hard packed.

[gixxer6]

Do the thermostats ever fail open. Seems like I have a hard time warming up. Temp gauge only begins climbing if you leave it idling and/or drive around slowly. Soon as I hit some snow, the temp drops immediately. I thought the thermostat would be able to regulate the engine temps a little better.  If this is normal, let me know. Of course I will pull it out and take a closer look when I have the chance.

I just saw that rad caps and thermostat are on sale at Parts Source in Ontario so I thought I would grab some spares.

My 81' Invader acts the same way.  My 79' runs a little warmer because of the smaller heat exchanger. 

[bryan_damone]

Well if all is normal, I am happy.

[mswyka]

We have the NAPA part number at home for a 13 psi replacement cap.  Our invader runs cold when there is plenty of loose snow to keep the tunnel cool and runs hot when snow is hard packed.

NAPA Part No.  703-1445