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Old 03-21-2016, 11:18 AM
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Gasket Identification (Engine rebuild kit)

I've gotten my 2.5L back from the machinist. It came out of a 1998 TJ.

Along with my block/heads, I received many new gaskets that were included in the master kit but that he didn't use.

I'm able to identify some of these, but there are several that I'm either confused with, or are completely alien to me. I'd really appreciate if anyone can help me identify these gaskets so I know where I need to use them. I feel that some of these are probably extraneous, but I'd feel a lot more comfortable having confirmation of that before I reassemble without using them.

Thanks!

In the box with "lower-end/block" gaskets:



On the left, it looks like a water pump gasket to another vehicle? But I don't think the Jeep uses this. Can anyone confirm? Or have I mis-identified it?

In the middle, everything on/in the plastic bag as well as the two small blue gaskets to the right of them I am drawing a blank on. No idea what they're for.

The three on the far right appear to be for the water pump... But why three? They seem to have slightly different holes and are each made of a different material. Which should I use?

In the box with the "head/valve-cover" gaskets:



No idea what the O-ring in the upper left is. I assume the top middle is the throttle body gasket? Not sure on the top right? I was going to say exhaust mid-pipe but it's made of paper so I don't think that's right.

The bottom two on the left appear to be the thermostat housing -- but two completely different materials. Any idea why?

I'm drawing a blank on the bottom middle and the o-ring on the right.

Any ideas?

Miscellaneous Part



This part was included in a box of old bolts. My machinist gave me the engine back with the heads bolted on, but without the oil pan attached, so I'm not sure if I need to use this in the lower end somewhere? Or is it just extra? Does anyone know where this part goes?



I was feeling very confident after taking the engine apart and bringing it to the machine shop. I'm decent at tracking the parts and putting everything in baggies and labeling them. But when I receive back a box with everything jumbled together and no identification then I'm starting to panic. lol.

Please set me straight.

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Old 03-21-2016, 03:01 PM
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I've been researching all morning and I now believe that the dark flat gasket on the plastic bag (1st pic) and the blue gasket in the middle of the same shape are oil pump gaskets. I'm not sure why I have two nor why they are different materials.

any insights?

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Old 03-21-2016, 10:41 PM
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I figured out what the steel band was for.... It actually goes on outside the oil pan and applies pressure to seal the pan/gasket around the bearing end cap at the rear main seal.

Still at a loss on most of the other gaskets.
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Old 03-22-2016, 08:28 PM
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Anybody?
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Old 03-22-2016, 08:34 PM   #5
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Don't go crazy trying to figure all the gaskets out. The master includes gaskets for different years and other model vehicles that used the 2.5 such as the Cherokee and the Dakota.. You have multiple water pump and thermostat gaskets and there are also fuel pump gaskets there for earlier years that still had engine mounted fuel pumps. There will be quite a few left over and I have a collection to prove it.

As you swap components just match up the proper gasket and keep going.
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Old 03-22-2016, 11:28 PM
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Thanks. Just needed a sanity check, I suppose.

For a few of the gaskets (thermostat housing, for example) there are multiple versions with the same shape but different construction.

Do you think any particular material is better than the other?
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Old 03-23-2016, 06:51 AM   #7
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Quote:
Originally Posted by p07r0457 View Post
Thanks. Just needed a sanity check, I suppose.

For a few of the gaskets (thermostat housing, for example) there are multiple versions with the same shape but different construction.

Do you think any particular material is better than the other?
No not really but I do prefer the ones with the sealant.

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