Howdy all,
I am pulling my supercharger to install a smaller pulley and read through the JTIS. Following the steps I had the blower out in 3 hours, easy peasy.

So question is, getting to that rear bolt seemed like no big deal at all. With the elbow removed, you have all the space in the world.

Everybody seems to suggest slotting the rear bolt but I'm confused as to why?

Why can't i drop the blower in, install the bolts, bolt up the elbow and then reverse the disassembly steps?

Further note, clean your egr guys. Mine was almost totally blocked by carbon.

 

Other note...is this diapery looking thing that sits under the blower wrapped in black plastic oem? seems kind of odd...

 

This might help
https://www.jaguarforums.com/forum/a...bolt-tool.docx

 

If im honest, no. Is the goal here to prevent pulling the elbow? Im not sure i get it otherwise

 

Since I've not removed the blower from my car yet, I cannot say what that thing is but can you send a picture of it to the group? I would like to compare it to my car when I get it apart...

 

I have pulled one charger off an
XJR-100 that had the bolt slotted on the rear. It saved a considerable about of time and aggravation to slot it. I have contemplated doing that to my own but, I have yet to do it and likely won’t.

 

I appreciate the replies but how did it save the time and aggravation?

On my car, once the elbow was off, i could access the rear bolt with a 3/8 ratchet and deep socket with no space restrictions whatsoever, so im baffled on why this is such an issue.

Just trying to understand. Thanks

 

When pulling the elbow off without the modified slotted bolt, you have to completely remove the EGR and the attached flex tube going to the P/S exhaust manifold.

With the modified bolt, you only need to remove the 2 long skinny bolts that the EGR bolts to the elbow and the rest can just hang there.

With the modified bolt, you don’t need to loosen or tighten that rear blower bolt. The idea is that it’s there but it’s not fully tightened down but enough to keep it in place. This way the elbow is still attached to the blower and when you tilt the front of the blower up, the 2 bypass hoses where it connects to the heat exchangers comes down a certain degree. This way before you reinstall the blower, you can bolt the elbow back on and slide the whole thing back in with minimal time.

 

Maybe it's an AJ27 thing? Their EGR setup may be different? When I did my blower job, to take the EGR off I was able to do 4 bolts (2 go to the EGR to exhaust hose, and 2 go from EGR valve to elbow) and then move it out of the way easily, then take off the elbow per FSM... I'll upload some photos later if there's confusion

EDIT: A2B I see you have both an AJ26SC and an AJ27SC car, done this job on both of them?

 

Last time I did sc overhaul to my aj27sc. I did not find the rear bolt to be difficult at all. I had to remove egr anyways as it was leaking. I did not remove ic s either. it can be done with that way too. Them short boost hoses between sc and ic s are pain in the butt when doing like this. But still doable.

 

Nilanium, I have had blowers off both cars. The EGR setup is identical on both 26/27 engines. I didn’t slot the rear bolt hole on either one.

Vauxi, you’re right, it’s not difficult to remove the elbow off the blower. The most difficult part is if that elbow to blower gasket doesn’t want to stay in place during reassembly. I combat that by cleaning the surfaces with brake cleaner. While the blower is on the bench, I then apply RTV to one side of the elbow gasket, place it on the blower and install the elbow along with the 4 bolts tight. I let it dry for a day and then I can remove the elbow and the gasket stays in place making it easier to install the 4 bolts once it’s back on the car.

 

I'm considering using two m6 studs with a screw driver slot to hang the gasket and semi locate the elbow while getting those bypass hoses on. Maybe add a piece of take on the gasket. Guess we'll see.

Thanks for the tips.

 

My how naive i was. Now i get it. Got the bypass hoses on no problem but getting the damn elbow bolts started was a royal pain. What finally workee for me was to remove the gasket, get one bolt started, and then slip the gasket in from above and then you dont have to fight the elbow angle and the gasket.

Now that i know this its not a big deal but definitely frustrating for an hour or so

 

Ahh that makes sense why I didn't consider the elbow to sc gasket. I put the gen v blower on, where the gasket "hangs" off the needle bearing center caps, so there's no need to hold the gasket.

The bypass hoses absolutely fought me on the reinstall though.

Attaching a photo of the EGR removed/loose for posterity