Ken's SLC build thread

I added a oil temperature sender to the dry sump tank for the GT-R. The sender used on C6 and C7 dry sump Corvettes is AC Delco #213-4333 (GM#12608814). This sender is the most common size found on current GM vehicles. It is used for the coolant temperature as well on LS engines. It uses a M12x1.5 thread pitch (straight thread). Trying to find a weld in bung is very difficult in this size so I bought a tap and made my own. It's very important to have the hole and threads tapped/drilled at a perfect 90 degree angle as this is not a tapered pipe thread. The crush washer provides the seal. You might want to make a couple of these. I plan to put one in my LS9 supercharger coolant tank as well in case I want to monitor the coolant temps. (shown in the third picture). Keeping an eye on the IAT temps is important with boosted motors.
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Tap-https://www.mcmaster.com/26015a612
Spacer-https://www.mcmaster.com/1610t11 (1/2" length)
Drill bit-https://www.mcmaster.com/2901a171
Connector pigtail-https://www.rockauto.com/en/parts/acdelco,PT1798,temperature+sender+/+sensor+connector,2564
Sensor-https://www.rockauto.com/en/parts/acdelco,2134333,temperature+sender+/+sensor,4748
 
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This supercharger fill port has a very small footprint for mounting in our tight engine compartment. They can be found on CTS-V Cadillacs around 2015. The part numbers are: Reservoir #25884797. Pressure cap #15076936
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I bought a couple of 10" Spal DC brushless fans for the heat exchangers. The intercoolers will be small but thick so strong fans will be needed. These are pwm controlled fans (meaning they vary the speed based on the coolant temp). I was watching a YouTube video on the Koenisegg Jesko and wouldn't you know it, the Jesko is using these fans as well (first picture). Mine are in the second picture. The fans can not be bought stand alone. Retailers can't sell them by themselves. Spal even told me that in a phone conversation. I found someone on E Bay selling a bunch of them. I bought both for $300 shipped. The pricing on these is much more.

https://www.ebay.com/itm/SPAL-30107...m5b511dbc93:g:hGgAAOSw~xtcJsEe&frcectupt=true

A GM coolant temp sensor is getting installed in the Supercharger coolant reservoir and a Lingenfelter VSFM-002 will be used to create the PWM signal for each of the two Spal fans behind the heat exchangers.

https://www.lingenfelter.com/product/L460320002.html


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I also bought a cooling fan assembly from a 2017 Chevrolet Volt. It uses Spal DC brushless fans as well. I'm going to chop it up and hopefully get it to fit The SLC. I just didn't care for the look of the large 17" C6 Corvette fan I was using. It took up too much real estate. My SLC is using a C6 Corvette E38 ECM and Z06 modified tune which has the built in pwm signal needed for the fan speed control.

Spal DC brushless fans are used on the following cars:
-C7 Corvette (600 watt).
-Camaro ZL1 and SS model, Cadillac CTS-V/ATS-V (850 watt)
-Chevrolet Volt (dual 300 watt fans)
-Tesla Model X
-Traverse/Acadia


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I made a blank off cover/plug for the removed forward drive shaft. I wanted to make a plug so that it would protect the machined bore for the removed bearing. Just in case the forward output shaft was ever reinstalled. The third picture is the plug from the backside. The fourth picture is a look at my plug and Ron McCall's purchased plug (with the socket head bolt).

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I plan to use a transaxle cooler but it's good to have a back up hose in case of failure of the cooler or hoses at some point. I made up a Aeroquip 8AN teflon lined hose and a M16x1.5 banjo fitting on one side and a straight 8AN M16x1.5 fitting on the other end. Does anybody know the flow direction?

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I bought a couple of 10" Spal DC brushless fans for the heat exchangers. The intercoolers will be small but thick so strong fans will be needed. These are pwm controlled fans (meaning they vary the speed based on the coolant temp). I was watching a YouTube video on the Koenisegg Jesko and wouldn't you know it, the Jesko is using these fans as well (first picture). Mine are in the second picture. The fans can not be bought stand alone. Retailers can't sell them by themselves. Spal even told me that in a phone conversation. I found someone on E Bay selling a bunch of them. I bought both for $300 shipped. The retail on these is much more.

https://www.ebay.com/itm/SPAL-30107...m5b511dbc93:g:hGgAAOSw~xtcJsEe&frcectupt=true

A GM coolant temp sensor is getting installed in the Supercharger coolant reservoir and a Lingenfelter VSFM-002 will be used to create the PWM signal for each of the two Spal fans behind the heat exchangers.

https://www.lingenfelter.com/product/L460320002.html


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Ken, do you know which intercoolers are going to use?
 
They will be similar to Bobs. More than likely custom sized. One in each rear side vent. The GT-R side vents will pull more air due to their scoop shape. They will have a fairly small footprint so making them thicker will be important. The thicker the core the stronger the fan needed.
 
I finished modifying the OEM Audi R8 shifter. I wanted to keep the rubber isolation feature and also make it as low as possible. The 4 posts can be welded to the center hump of the tub. The OEM transaxle cable mount is also rubber isolated.
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If you want to get the OEM Audi shifter mounted as narrow as possible then you could trim the mounting ears as shown in the picture (drawn in ink). The width would be 5 1/8". Side mounts could be fabricated to hard mount the shifter assembly to the center spine.

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I made a bracket for the speedo/ecm signal. The brace is ready for welding. I used the same sensor that came with the Racelogic traction control. I purchased a few extras from EBay a couple of years ago. (IFM efector 100 inductive sensors IE5238)

The bracket was cutout by hand from a 5" piece of 6061 angle aluminum. You could even make it a two point mount instead for simplicity. The "press on" reluctor rings are available to order from Fran or directly from the Driveshaft Shop.

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The sensor mounting is finished being mocked up on the passenger side of the graziano transaxle. My SLC has the sensors mounted on the back of the suspension uprights and the reluctor ring on the outboard cv joint. I wanted to make it different on the future GT-R so I'm mounting the sensors on graziano instead. The upper one is for the speedo /ecm (passive). The middle one is for the BMW abs/dsc system (active). The lower one is for the Racelogic tc (passive)

The active sensor is the most difficult to install as it isn't adjustable like the passive sensors. The drivers side sensors will but more challenging to install but only 2 sensors are needed. Knowing where your exhaust system will be run is important to keeping them as far away from heat as possible.

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Here is the bracket made for the drivers side. If you are only needing to use one or two sensors in total this would be the one to fabricate. It's location is out of the way from exhaust tubing.
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The first picture shows the cardboard template I made and the center punch marks for the 4 holes. I used this template to make my bracket. The center punch marks are dead nuts accurate. I can send it to anyone as a PDF if you want to copy this plate design. Just send me a PM with your email.
The second picture shows it mounted without the CV heat shield. The heat shield then gets bolted back on. My finger is pointing to the sensor attachment point. The third picture shows it in position with the shield and reluctor ring. Tomorrows job is to fabricate the sensor mounting brackets IMG_2507.JPG IMG_2499.JPG IMG_2504.JPG
 
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