Agree with the damper, better the 4.2 one then a custom larger pulley, but have my reservations with the 7 rib belt (would probably try it myself t be honest).
You can still use the front conver, but I cant see why you want to use the lower bed plate, especialy not now with the issue. Make sure it fits perfeclty to avoid belt alignement issues.

Cobra pulley will not work, its a very different one, iirc the upper is about 2.93" or so.

 

What do you call the bed plate? I'm confused. The lower sump?

Also, what size are the available SC pulleys for Jags?

 

In case you guys wanted to see the infamous "Piston Jets" that everyone speaks off...here it is

 

ok, so here's the P/S pump and bracket installed after light clearancing...




PS. the dipstick and tube swap over nicely too the 4.0 and 4.2 have different lengths.

 

Honestly I can't believe how much cleaner the '04 engine is. There is no sludge on anything. The place I bought it from told me 70K miles on it, but I seriously doubt that they had an idea as the car had a cabin fire. I'll see if I can dig up a VIN from it and run a carfax.

NEW:



OLD:





BTW the alternator seems to fit with no modifications:

 

So, I just want to point out. Research, read, read and read more. Study AVOS's Reference 20 times before you start. People supposedly only retain 20% of the knowledge...now I know that it's a fact.


I almost had a panic attack today.

There I am trimming the front cover to make brackets fit and I start to disassemble the bottom sump and pickup....

Well, I take it off and I notice that the oil pump is totally different
My first thought was.....holly molly, I gotta take the whole front cover off and screw with the timing chains ( well I see why they are better on the '04, the '98 look like bicycle chains, I'll snap a pic tomorrow) and get a new pump....than I started thinking if the '98 pump would be big enough to sustain the jets....anyway I ended up with a headache from thinking and decided to re-read things over again....

Well after a few minutes it finally saturated into me:

So, now I'm relieved that I can leave the front alone....(and keep the big pulley and the oil pump) but now I have to figure our how to mod the old lower sump. Also, does the pickup need to be modified?

 

Sorry don't now the official name, it is the part you took from the 4.2 where the oil filter is attached to, and where you have now the small issue with. Is lower sump the right name?

 

Not sure what the official name is but I think we're talking about the same thing (the upper oil pan with the windage tray)

I was initially speculating about keeping the 4.2 one, but you made a good point about the filter location and I also don't want to go through the trouble of reworking the oil cooler lines. So, I will be using the one from the 4.0.

Can you give me some advice on how to make it work with the 4.2 oil pickup/pump?

Thanks,

Adam

 

You need to use the 4.2 oil pump and 4.0 oil pickup. You just need to cut out a metal part from the oil sump (you will see what I mean) don't you need some sleep?

 

looking cool keep hammering away

 

I like wrenching at night. Way less distractions., plus all the European Gurus are awake....

 

Oil pan clearencing for the 4.2 pickup and trial fit:

 

Bottom end appears done...

Here's a pic of a rig for the accessories and the belt...

Something tells me I need a longer belt. The 4.2 one is too short as it appears as on the 4.2 the AC and PS are tucked in closer to the block.

 

Here's where I finished tonight.... 14 hours straight at this is a bit too much for me.

Cheers:

AJ34 Cosmo




One more thing that got me stuck.

How do I swap this over to the new block? (the camshaft position indicator vane from the left bank) What's the easiest way?????

 

What a job, 14 hours not to be sneezed at all and I think your all images should take a big hit at Chive site

 

OK, Camshaft vane is swapped I figured it out.




Also, I got the right size belt for the accessories

 

Love it Adam, when do you think it'll be back in?

One thing to mention, the later AJ27 SC unit has the same oil pump, pickup and sump assy as the 4.2 (from engine number 0108130000 August 13 2001)
Could using just crank and con rods on these later 4.0 make them the same thing as the early 4.2, or is there more to it than a stroked crank and thinner con rods?

 

Hopefully one of the guys will chime in. From what I read it looks like the bore diameter is the same. I don't know if I'd mess with it thou as after reading the rebuilt manual it gets pretty complicated with matching the bearings.

 

OK, so I started to bolt up the top end today.....and I run into a problem...

The camshaft position sensor on the driver's side of the AJ34 heads interfeers with the fuel rails, how do I get around this?



As you can see here, the rail will not go in with the sensor in place and we can forget about the fuel connector:

 

You can file of some material from the top of the sensor, at least that is how I have done it.