When all else fails...call the manufacturer.  Just got off the phone with Reische.  They answered the phone right away and were helpful.  LOVE companies like that!

"The Ford-4D model for our application does not have a jiggle pin and install orientation is unimportant."

He also said the same thing that the mechanic at my dealership told me when I asked about the possibility of an air pocket.  He said you'll know right away if there's an issue.  My mechanic "friend" said that the car will either be running hot or the heater won't work. 

Z, since our thermostats were purchased years apart, it's highly likely that Reische has had a product change.

Hey everyone I just wanted to take a minute to clear up a few things in here.  We seem to be inundated lately with people concerned about jiggle pins.  Let's be clear that it's primary purpose is to prevent an air pocket from being stuck around the thermostat heat motor upon refilling the system.  If this happens the thermostat will not be able to open, however this rarely ever occurs in practice.  If you have installed a thermostat with a jiggle pin and it cycled open (radiator input hose hot to touch) once the engine was ran then you absolutely DO NOT need to be concerned about the orientation of the jiggle pin anymore, it is a refill aid only.  To be clear our thermostat for the 3.5L transverse application does not have one.

Quote from: sholxgt on July 31, 2016, 05:26:50 PMMy temperature is varying between 170 and 184 degrees.  Within a couple mile stretch of road it will vary from 172 to 178 without accelerating or idling.  Just driving a constant speed.  Is this normal?

Yes.  If your engine mgmt systems are like most Ford late models, they use a head temp sensor to take a 'guess' at coolant temp.  So the readings you are seeing are likely not actual and more volatile than your actual ECT.

Quote from: ZSHO on August 22, 2016, 10:20:28 PM
The reishe 170 stat diagram says to install the nipple facing 2400 hrs position.

There is not a diagram that we've ever published anywhere to orientate a jiggle pin.  Our current Reische model (Ford-4D) for the transverse 3.5L does not have a jiggle pin.  However, the model (Ford-50) for the rear drive vehicles does and we do recommend clocking it to the highest point.

Quote from: sholxgt on August 23, 2016, 11:12:30 AMThe instructions are extremely basic.  I can scan and post if anyone cares.

I apologize but we cannot provide detailed install instructions because any given model fits many different applications.  We assume installs will be performed by a qualified mechanic or experienced do it yourselfer.

Quote from: ZSHO on August 23, 2016, 12:39:08 PM
I purchased my Reische 170 stat a few years back and it had some type of air bleeder type valve on top and clearly was made in Germany...

This was definitely not one of our thermostats.  Prior to 2011 a small number of Ford-4D thermostats were mfgd with a jiggle pin but all of them were marked 'made in USA'.


As always I'm happy to address any further question or concerns you may have about our products.  Feel free to email, call or text.

The Reische 170-Stat was purchased directly from Lethal performance back in 2013 and has been working flawlessly since then. It did include a small instruction manual IIRC! I could have the limited version! Dunno.  
Btw Welcome back. Z

PIC- (Courtesy) of sholxgt


https://www.lethalperformance.com/reische-performance-ford-4d-170-performance-thermostat.html