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Senior Member
Originally Posted by
Al_C
I'm doing the engine prep for installation. Last little hurdle to overcome: The Coyote instructions (starting on page 26) tell me to remove the plug that accepts the 14mm key. Done. It's a big plug. Then, I am to replace that with the adapter that the water temp sender screws into. Oops. The adapter plug I found in the coyote fitment box is much smaller than the Coyote plug. One of three possibilities: a) I pulled out the wrong plug, b) I pulled the wrong adapter from the box, or c) the plug is bigger than it was when the put my kit together. Take a look.
The big hole is where I pulled the plug from. The 14mm key fit it quite nicely.
Here's the top view of the plug and the adapter I have:
Here's the bottom view:
The adapter is quite a bit smaller than the original plug.
Comments? Ideas? I'm hoping that if I can't find an adapter that fits today, I'll be able to access that hole from under the car, because the engine is going in tomorrow (Sunday).
Al I can't remember the specifics other than to tell you whatever came in my coyote fitment kit did not work for me as the directions showed and I had to go to Home Depot to get some additional parts to make it work.
MK4 #8900 - complete kit - Coyote, TKO600, IRS - Delivered 6/28/16 First Start 10/6/16 Go cart - 10/16/16 Build completed - 4/26/17 - 302 days to build my 302 CI Coyote Cobra - Registered and street legal 5/17/17
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PHIL 4:13 INSTAGRAM - @scottsrides
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Senior Member
That's the right hole. Used on production Coyotes for a block heater, so a pretty big opening. I'm with Scott. Don't remember what I did but did have to buy something. This is what mine looked like right before dropping the engine in. Note I don't have the oil pressure sender installed on the "T" because I didn't want it sticking out when I dropped the engine in.
Build 1: Mk3 Roadster #5125. Sold 11/08/2014.
Build 2: Mk4 Roadster #7750. Sold 04/10/2017.
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Build 3: Mk4 Roadster 20th Anniversary #8674. Sold 09/07/2020.
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Build 4: Gen 3 Type 65 Coupe #59. Gen 3 Coyote. Legal 03/04/2020.
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Build 5: 35 Hot Rod Truck #138. LS3 and 4L65E auto. Rcvd 01/05/2021. Legal 04/20/2023.
Build Thread. Sold 11/9/2023.
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Senior Member
Same here. What they said was the wrong size, but I did have the correct one in another bag somewhere in my kit, so I stole it from there. Can't remember offhand what it was intended for.
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On a roll
Thanks, gentlemen. I found an adapter at Ace Hardware that will fit the hole and accept the adapter from FFR. It adds a little length, but I'm hopeful it will work. We'll see tomorrow!
Mk IV Roadster - #8650 - delivered 7-17-2015 - first start 7-28-2018 - first go-kart 10-13-2018 - licensed and on the road 9-9-19: body/paint completed 3-17-2020.
Complete kit / 2015 Coyote / TKO600 / IRS / Wilwood brakes / Mid-Shift mod / Power Steering / Heater and Seat Heaters / RT turn signal / Breeze radiator shroud and mount
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Senior Member
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25th Anniversary #9772
came here to ask the same question...
crazy that this is such a different size! wish I would have realized this when I had to run out and grab the H14 socket to remove it - yet another run to Ace Hardware
IMG_4674.jpg
edit: in re-reading the directions, it seems that there is supposed to be a 3/4" NPT to 1/2" NPT adapter
gotta dig through my FFR parts box now
Screenshot 2022-04-13 203148.png Screenshot 2022-04-13 203510.png
Last edited by toadster; 04-13-2022 at 10:36 PM.
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25th Anniversary #9772
just an update for those who may run into this as well
the FFR kit provides the 3/4" NPT to 1/2" NPT adapter, however the provided adapter from Speedhut kit has a thread size of 1/8"-27 NPT
in my scenario, there is no 1/2" to 1/8" adapter in either kit - I believe there is a 1/4" to 1/8" and 3/8" to 1/8" adapter
IMG_4675.jpg IMG_4676.jpg
you can see that the adapters provided just fall into the 1/2" threaded opening, so they're not going to seal at all...
I opted to order a 3/4" to 1/8" NPT adapter to mitigate binding multiple adapters together to make this fit
WoXrnij.png
this seems to be a simple enough $10 solution, but I'll also share with FFR to see if they can improve this in the future
Last edited by toadster; 04-15-2022 at 09:53 AM.
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Post Thanks / Like - 1 Thanks, 0 Likes
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25th Anniversary #9772
got the updated part today, did a test fit prior to installation to check depth, I was a bit concerned about this
1. the 3/4-1/2" adapter from the FFR kit above
2. the 3/4-1/8" adapter from amazon with the sensor installed
3. the OEM plug from the Gen3 coyote block
IMG_4687.jpg
installed - I like how tucked in this version is compared to the FFR setup with 2 reducers and the sensor
IMG_4688.jpg