so mystery solved with regard to the little plastic pipe I was referring to. I did a deeper web search and found an older post on this forum. Apparently the ZF transmission has a vent tube that goes from the bell housing up to the bracket behind the supercharger. It twists around, points back down, is open and has a pink stripe. It doesn't connect to anything. How weird.

 

So now another question as this job is kicking my butt a bit. For those of you that did this job easily on the V8s, my hat is off to you. I'm running into issue after issue that I wasn't prepared for. So here's my situation and then questions. I took off the oil cooler so that I could change the small plastic pipe connecting it to the back of the water pump. When I got the cooler off, I noticed a bunch of oil bubbled up and made a nice mess. With that in mind I'm pretty sure some oil went into the water port and possibly vice versa. Not much but possibly a little. When I put the new metal pipe in and set the cooler back down, it took some effort to get the pipe and new coupler installed in the back of the water pump and line up the screw holes for the oil cooler. Apparently I bent the pipe a little coming out of the oil cooler so I bent it back a bit. Now it's all tightened down but that pipe seems a little angled which makes me concerned about possible leaks. I also went back to the plastic pipe since the metal pipe for some reason seemed like it did not seal well at all. So now a couple of questions: 1) if I actually did get a little oil in the coolant port and vice versa, is that an issue. It might be less than an ounce or so. 2) what are the chances this coolant pipe connection will leak since it's slightly crooked?? See photos below.

 

So making progress on this project which turned out to be a much bigger project than originally anticipated. While the Supercharger is off I noticed a ton of carbon and goo in on the valves so I spent a bit of time cleaning them up. I also broke a few parts and needed to order new one's. It happens. So now as I am finally getting ready to drop the supercharger back on the car I noticed that the metal gaskets that go between the supercharger and the heads are different from driver to passenger side. When I went to the dealer the parts guy told me they are the same. I lined up the old gaskets and they are most definitely a little different. Have you guys noticed that as well? Does anyone have both part numbers for those gaskets?

 

Oh sorry this is for the V8, not the V6

 

Yes, I'll be doing the same job soon. The gaskets I bought from the dealership have the same part number.

 

The gaskets are most definitely different. One of then is AJ811576 and the other is AJ811590.

 

Then I'm also in trouble. I'll look into it.

 

So I'm glad I'm not crazy (well Jury is still out on that haha). Robtrt8 thanks for confirming and listing part numbers. You're awesome. I'm assuming you did the job and ran into the same issue? Does anyone find it odd that the Jaguar parts diagram shows the same part for both sides of the intercooler for gaskets and yet two different diagrams with different part numbers somehow belong to the same engine. What the heck?

Not sure if this applies to the V6 engine for those folks.

 

To be fair, my parts manager at the dealership in the valley picked out all the parts they use when the JLR techs do a job. The service manager also suggested the belt tensioner and was curious if the new JLR metal pipes took the same hose at the overflow connection. It does.

When we were putting everything back together Gage mentioned the gaskets were different, right to left. Asked if I had gotten two different part numbers and I had.

 

Thanks for added info. It's so odd that Jaguar's parts Department and diagrams don't show this. What a bummer since I was hoping to get the Supercharger back on last night which now won't happen until later in the week since the nearest Jaguar dealer to me is about an hour away.

Thanks again for helping me sort this out.

 

You can use Harper Jaguar Parts dot com to verify parts and pricing.

 

So a little update. I got everything put back together which wasn't too tough since I took my time with it. Now the new issue. I picked up a pressure tester/filler so I can fill the coolant and get ready to start the car, however when I pressurized the system (with negative pressure I guess - vacum) it won't hold pressure and I can hear a leak around the throttle body area. It's tough to pinpoint since there's quite a few coolant connection points in that area including the oil cooler pipe that goes into the back of the water pump. I used about 20 psi of negative air pressure. The lower radiator hose squeezed in like it should however the pressure leaks out so it won't hold pressure. I therefore believe I have a leak. So curious if anyone has any suggestions before I tear this all completely apart. Is 20 psi too much??? Did I create a leak with too much pressure?

 

Most likely a leak. Maybe fill the system and see if it leaks under pressure?
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Gage says he pulled 25 inhg. The top hose was completely collapsed.

It did take more coolant afterwards. Remember to open up the heater and rev the motor to 2,000 for a couple seconds.

Added more after a couple warm up and cool down cycles.

 

Robtrt8. I haven't gotten that far yet. I haven't added any coolant as I'm hoping to avoid a mess since I seem to have a leak or leaks just from negative pressure on the system. Trying to figure out if I really do or not. I'm curious if the 20 psi is too much and maybe I created a leak from pressure or not?

 

20psi translates to 40 inches of mercury, so double what Gage used. When the dealership looks for leaks by adding pressure they are only supposed to add 5psi. I’d say go ahead and fill it, then run it. See what’s what.

 

ah so maybe I just had way too much negative pressure? I'm just trying to avoid a giant mess in case I actually do have a bad seal or connection point. I was considering running smoke through the system much like finding a vacum leak. Any thoughts on that?

 

You could run distilled water initially and see what leaks, if anything. If it’s happy then pull some water out and add some undiluted coolant. Consider it an extra flush.

 

actually I just went out to the garage and did another leak test and realized that the guage is actually in inhg and I pressured up to only 10 inhg and I can hear the hissing sound coming from something around the throttle body so I definitely have a leak in something I did.

What do you think about the smoke idea or do you think that really won't work?

 

Couldn’t hurt.