Normy

Brian-

Last year when I pulled the water manifold to fix an oil leak around the filler can on my 2 valve car, I noticed the same thing. The inner ring area of the manifold itself was quite corroded...if my car had not been running cool prior to that point, I would have probably been concerned and done something about it. I took a file and knocked off most of the corrosion before I put the manifold [and new t-stat] back on. My car typically runs with the temp. needle slightly below the middle point of the gauge, even in the summer here in Central Florida.

Normy-
'85 S2 5 Speed

BrianG

Thanks Normy! My car also runs to the cool side. In fact, the PO put a 83 degree thermostat in it, probably because it will not throw much heat from the HVAC. It gets chilly up here in the Great White North. If I can figure out how to properly reassemble this unit, with all the seals and O-rings, I'll bet it runs at the right temp AND will keep a guy warm at night.

Erik - Denmark

quote
where does that "Thermostat O-ring" go?
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Brian the O-ring is placed in front of the thermosat, to seal the covering

Ed Ruiz

The seal goes on the engine block. The O-ring goes between the front of the thermostat housing (towards the radiator) and the front of the thermostat. It's all illustrated in the Service Manual. YMMV.

Mark

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by Randy V:
<strong>Mark, you can also look forward to increased gas mileage now that the engine will be operating more efficiently.</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">Randy - I am SURE (even tho I was quite pleased with the 22-23 hwy I was getting)

I took her out for a "Thermostat shake-down" last nite. I was AMAZED at how much smoother she ran. Also - she seemed MUCH quieter...maybe it was the smoothness...