Crank Position Sensor - Page 2 - ZR-1 Net Registry Forums

spork2367 · 05-10-2022

So my car, 1990 VIN 0906 has both the shim and the 1103737 DIS. Both original.

-=Jeff=- · 05-10-2022

Great questions Wondered why my car also had the shim as it is #1051, I would need top look at part number of DIS next time it is apart

A26B · 05-10-2022

How thick is your shim? Was it loose & came out with the sensor?

-=Jeff=- · 05-11-2022

Quote:

Originally Posted by A26B

How thick is your shim? Was it loose & came out with the sensor?

What do you consider think? it was not thin to to point I could easily bend it if I wanted to, but was there. I don't recall if it stayed in place when I removed my sensor

spork2367 · 05-11-2022

Quote:

Originally Posted by A26B

How thick is your shim? Was it loose & came out with the sensor?

My shim was loose and was less than .050. Probably in the .030 range just guessing.

A26B · 05-11-2022

OK, here is why I asked.

Photo of shims we have in stock, various thickness, 0.065", 0.081" & 0.097".

Photo of the Steel Insert in the block for the Sensor.

Notice, it looks very much like the Shim in the photo above. I initially made the mistake of seeing the "steel insert" and mistaking it for the "shim." That is why I was asking if your "shim" actually came out with the sensor when it was removed.

Could one possible explanation for sensor shims "seen" on 1990 models with VIN higher than 500, is that you may have seen this & thought it was a shim.

spork2367 · 05-11-2022

Quote:

Originally Posted by A26B

OK, here is why I asked.

Photo of shims we have in stock, various thickness, 0.065", 0.081" & 0.097".

Photo of the Steel Insert in the block for the Sensor.

Notice, it looks very much like the Shim in the photo above. I initially made the mistake of seeing the "steel insert" and mistaking it for the "shim." That is why I was asking if your "shim" actually came out with the sensor when it was removed.

Could one possible explanation for sensor shims "seen" on 1990 models with VIN higher than 500, is that you may have seen this & thought it was a shim.

Nope. Definite shim. Came off with the sensor. Photo of the DIS part number attached.

A26B · 05-12-2022

Quote:

Originally Posted by spork2367

Nope. Definite shim. Came off with the sensor. Photo of the DIS part number attached.

Well, its only one datum point, but your finding does indicate that the shims were used past the first 500. The question that comes to mind is "Does the first 500 refer to the vehicle VIN or the Mercury SN?" I don't imagine there was any effort made to install new engines from Mercury in a particular order relative to VIN. So if true, the possibility may exist that the first 500 engines are scattered among 1990 VINs.

spork2367 · 05-13-2022

Measured shim today. .037"

A26B · 05-13-2022

Quote:

Originally Posted by spork2367

Measured shim today. .037"

05-10-2022	#11
spork2367 Join Date: Jun 2013 Location: PA Posts: 875	Re: Crank Position Sensor So my car, 1990 VIN 0906 has both the shim and the 1103737 DIS. Both original.

05-10-2022	#12
-=Jeff=- Join Date: Jul 2007 Location: Bartlett, IL Posts: 7,155	Re: Crank Position Sensor Great questions Wondered why my car also had the shim as it is #1051, I would need top look at part number of DIS next time it is apart __________________ 1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Shelby Series 1 - Wilwood Brakes Custom Interior NCM Lifetime Member #978

05-10-2022	#13
A26B Join Date: Dec 2003 Location: Arcadia, OK Posts: 3,392	Re: Crank Position Sensor How thick is your shim? Was it loose & came out with the sensor? __________________ Jerry Downey JERRYS LT5 GASKETS & PARTS http://www.jerrysgaskets.com 1994 *ZR-1*, Black/Black, Lingenfelter Aerobody, 416cu in, 3.91 gears, coil-over susp, Brembo brakes, etc. 2016 Black-Red, 3LT-Z51 Auto 8-speed.

05-11-2022	#16
A26B Join Date: Dec 2003 Location: Arcadia, OK Posts: 3,392	Re: Crank Position Sensor OK, here is why I asked. Photo of shims we have in stock, various thickness, 0.065", 0.081" & 0.097". Photo of the Steel Insert in the block for the Sensor. Notice, it looks very much like the Shim in the photo above. I initially made the mistake of seeing the "steel insert" and mistaking it for the "shim." That is why I was asking if your "shim" actually came out with the sensor when it was removed. Could one possible explanation for sensor shims "seen" on 1990 models with VIN higher than 500, is that you may have seen this & thought it was a shim. __________________ Jerry Downey JERRYS LT5 GASKETS & PARTS http://www.jerrysgaskets.com 1994 *ZR-1*, Black/Black, Lingenfelter Aerobody, 416cu in, 3.91 gears, coil-over susp, Brembo brakes, etc. 2016 Black-Red, 3LT-Z51 Auto 8-speed.

05-13-2022	#19
spork2367 Join Date: Jun 2013 Location: PA Posts: 875	Re: Crank Position Sensor Measured shim today. .037"