View Full Version : Where Do I Get This Air Fitting?
Redlinejoev
03-20-2023, 03:37 PM
If anyone can please help me I'd really appreciate it. Im searching for the 90 degree air adaptor fitting at the front of the Coyote engine in my MK4. It's for the vacuum hose coming from the fuel pressure regulator. I've tried two of my local Ford dealers but they were at a loss. Where did you get yours?
Thank you in advance.:cool:
JohnK
03-20-2023, 04:14 PM
FWIW - I'm working with Lund Tuning to tune my gen 2 coyote and they recommend against connecting the vacuum line to the fuel pressure regulator. That said, if you want to connect your fuel pressure regulator to a vacuum source, there are some older threads about connecting the CMCV vacuum lines on gen 2 coyotes, and in those threads a few folks fabricated CMCV vacuum lines that included a tee for the fuel pressure regulator. Here's one example. (https://thefactoryfiveforum.com/showthread.php?35972-Coyote-Gen-2-PVC-CMVV&p=410817&viewfull=1#post410817)
Redlinejoev
03-20-2023, 05:30 PM
Thank you John. I should have mentioned I have a gen 3 Coyote. In the FFR instructions for the gen 3, page 59 they mention and show a photoi this fitting. It looks pretty simple, it's a 90 degree reducer. I tried to import the photo but it is either protected or I too ignorant to figure it out, lol.
Indy Shu
03-20-2023, 07:00 PM
That should be with the coyote figment pieces.
Redlinejoev
03-20-2023, 07:06 PM
It did occur to me that it might be a missing part. Sounds like I'll need to contact Factory Five tomorrow. Thank you very much!
Indy Shu
03-20-2023, 07:41 PM
16870 3/8" TO 4mm (0.157") 90° VACUUM LINE CONNECTOR
I think this it it from my inventory sheet.
edwardb
03-20-2023, 09:20 PM
You're going to find Lund doesn't recommend the vacuum reference signal to the regulator for the Gen 3 Coyote. For normally aspirated, they recommend leaving the vacuum port on the regulator open to atmosphere. That's how I have mine and it runs perfectly.
Tooth
03-21-2023, 10:08 AM
I have a gen 3 coyote with a gen 2 cobra jet. I ran the line, but god only knows what this setup will look like after the tune. Didn't know it was an option to not run it, but super easy to eliminate. The little 90 degree elbow was in with my coyote stuff.
Ducky2009
03-21-2023, 10:37 AM
Something like this, to connect the front vacuum port to the fuel pressure regulator? If so, PM me, I'll mail you one.
181901
Redlinejoev
03-22-2023, 12:20 PM
Hello all and thank you for your input, it is highly appreciated. The forum gods provide the answer once again.
Joe
toadster
03-22-2023, 12:53 PM
glad I saw this, I did run a line from the coyote port to the FPR, and now it's not needed.
assume I just cap the vacuum line on the manifold?
edwardb
03-22-2023, 01:32 PM
glad I saw this, I did run a line from the coyote port to the FPR, and now it's not needed.
assume I just cap the vacuum line on the manifold?
You still need vacuum to the CMCV circuit. Whole bunch of posts on this topic. So normally, no, you wouldn't cap the vacuum line at the engine. You just don't need the added branch to the regulator.
On a separate but related subject, if you are leaving the regulator vacuum connection open to atmosphere as discussed, and you're using an Aeromotive regulator (or other brands with 1/16-NPT threads) they recommend removing the nipple and capping with an Aeromotive 15662 regulator breather. It has a screen rather than leaving it open.
toadster
03-22-2023, 02:05 PM
You still need vacuum to the CMCV circuit. Whole bunch of posts on this topic. So normally, no, you wouldn't cap the vacuum line at the engine. You just don't need the added branch to the regulator.
On a separate but related subject, if you are leaving the regulator vacuum connection open to atmosphere as discussed, and you're using an Aeromotive regulator (or other brands with 1/16-NPT threads) they recommend removing the nipple and capping with an Aeromotive 15662 regulator breather. It has a screen rather than leaving it open.
Thanks Paul, using your reference photo below, here is what I have setup:
my CMCV is disconnected and LUND has tuned them out
port "F" is capped
port "H" going to my brake booster vacuum port
port "I" below going to the Aeromotive FPR, this one I will cap since not needed for the FPR and get a new screened breather - thanks!
https://thefactoryfiveforum.com/attachment.php?attachmentid=99521&d=1545753516
edwardb
03-22-2023, 02:20 PM
Thanks Paul, using your reference photo below, here is what I have setup:
my CMCV is disconnected and LUND has tuned them out
port "F" is capped
port "H" going to my brake booster vacuum port
port "I" below going to the Aeromotive FPR, this one I will cap since not needed for the FPR and get a new screened breather - thanks!
With the CMCV tuned out (although it doesn't hurt anything...) you should be all set.