Hi guys, I have a quick question, 2017 F-type, 3.0 supercharged, I notice that my supercharger pulley is making a loud whistle after the car is running for a while, am thinking to replace the pulley, but what my question really is, are there bearing inside that pulley, are there repair kits for this, Do I need to replace the whole supercharger drive, or could it be something else?

thanks in advance!

 

There is no bearing in the supercharger pulley; it is press fit onto the supercharger shaft. If you do have a bearing problem, it is internal to the supercharger. Superchargers are inherently whiny, are you sure its not just normal operation?

 

is very loud, af first when the car starts doesn’t make that sound, after its been driven for like 10 minutes, is warmed up, every time I stop at a light or something, starts making that loud wistle noise, very loud, it goes away as I start to drive, then whenever I stop it goes again, when I say loud I mean loud, that was reason I thought it might have bearing in there.

 

Interesting that doesn't start until warmed up and it goes away under load. It's a whistle and not a squeal?

 

If the SC snout bearing has gone bad, snout repair kits are available: https://www.jaguarparts.com/oem-part...Y4LWdhcw%3D%3D
Post a clip of the sound. Somebody here will be able to determine whether it’s the belt or the snout bearing.

 

i would but I took it apart right now, I purchased the whole supercharger snout, is a complete replacement part, but it is weird, it have a new belt, it only have 20K, I also heard that if the supercharger doesn’t have oil it could be a possibility? am not sure, am lost

 

is a wistle, have new belt, new supercharger pulley, car only have 20K , that’s why is a little strange, but definitely the loud wistle come from the supercharger snout

 

I knew the "h" in whistle was silent but didn't know it was invisible.

 

🤣🤣 biiisshhhhh

 

so , i was getting ready to take the supercharger snout since am getting the replacement tomorrow and I noticed something interesting, could this be the problem, I see that my supercharger belt is touching the belt tensioner, is touching it so bad that I took the tensioner out and noticed in the tensioner body, (the aluminum) the belt marks, is this normal or what?, i attached some pics

 

That does not look right!
I see you have a double-sided (ribs on both sides) SC drive belt whereas the OEM belt was always single sided.
When fitting a double-sided belt the tensioner needs to be changed as well, and it looks as though you still have the old/OEM tensioner.
I reckon you have found the source of your whine!

 

Whoops, double post.

 

i think that is it, making that loud sound after gets hot, I ordered the belt through the dealer online, so you saying that’s the wrong belt?, is supposed to be one side tread only?

 

but I seen the supercharger belt to be double-sided, at least in the cars I’ve seen, or maybe my tensioner is broken? am confused now....

 

Looking at your pics again I am not so sure.
Are those pics taken from the top looking down or from the bottom looking up, it's very hard to tell although my best bet is bottom looking up?
But in any event there is no way a ribbed belt should be rubbing on a pulley/guide/tensioner (whatever it is) like the metal one in your pics, the silver one with the "step" in it. I'm trying to picture the SC tensioner in my head and from memory it doesn't look the same as that metal one in your pics and maybe just maybe it's missing a piece (possibly ribbed) where the belt sits/touches.

Edit - looking closer now that suss looking pulley is not the tensioner instead it is one of the two idler pulleys, hard to tell for sure but I reckon it is the bottom one.
Both idler pulleys are black plastic, so I reckon you are missing the plastic part of that pulley. If so, how the hell your SC even runs is beyond me!
The attached diagram shows the pulley and belt set up (the bottom diagram).

 

this are pics looking from top to bottom, the belt is touching the tensioner, I took some pics of the tensioner as well, to see if it looks like is bad, you can also see the marks made by the belt right there, also I don’t know if somehow the pins are not right like is broken maybe?

 

OK, getting clearer, that is definitely the tensioner.
No way should the belt be rubbing on it let alone as badly as those grooves indicate.
Something is very wrong but I am not sure what, maybe the tensioner is broken, maybe it has been fitted incorrectly, maybe the belt is the wrong length, I dunno.
Anyway, attached as the belt/pulley diagram I promised last time but it went haywire.

 

yes my set up is as shown in the picture, the only difference is that I don’t get that space from the tensioner to the pulleys going up, my belt is touching all my tensioner, making me think that my belt is too short, also almost impossible to put back the belt, makes a lot... LOT of pressure, I have to remove the middle pulley and force it to make it fit and when is all fit properly, is very tight, I can’t even take the belt out because I don’t have any extra space to wiggle, if it makes sense.

 

more specifically, see that space between the tensioner and the belt, mine have 0 space making it touch the tensioner. Making me believe that my belt is too short?

 

Yep, that would make sense, a too short belt pulling the tensioner in so far that the belt now rubs on the tensioner "base".
There have been some problems with these SC belts when buying a larger crank pulley kit, but so far always with the belt being too long rather than too short, maybe you are a pioneer?