Subaru Legacy Forums

Subaru Legacy Forums (
-   Turbo Powertrains (2.0GT, 2.5GT, 2.5XT) (
-   -   Engine reassembly question please (

heiche 12-14-2012 07:28 AM

Engine reassembly question please
First, sorry for the crosspost, I don't think I posted in the correct forum a few days ago, and got no responses.

Update: still working on my project car as time permits. What originally was thought to be a blown turbo with possible engine damage seems to be limited to just the blown turbo. The bearings seem to be fine so far, so that's great news.

So my question is, does anyone have any more detailed pictures on where the sealant should be applied to reassemble the block halves? The vacation pictures are great, but wish i had a little more detail on this step - I don't want to mess this one up! I searched, but didn't come up with what i was hoping for.

Thanks all.

wurkenman 12-14-2012 10:01 AM

Just take your time and apply the sealant around ALL the outside edges and anywhere there are fluid holes or passages. It can't hurt to do the entire surface. You will see by where the crank sets in the bottom half on the oil pan side obviously will need none. Use sparingly as it WILL get squeezed out into the cavities on the inside and out. It does not take that much. Make sure everything is squeaky clean and free of any dirt.

heiche 12-14-2012 12:03 PM

thanks for the info!

suds2250 12-14-2012 07:13 PM

Key words are USE SPARINGLY

2manysubies 12-15-2012 12:51 PM

1 Attachment(s)
Attachment 136797

Sorry about the Sealant on there!


Max Capacity 12-15-2012 04:59 PM

You say the bearings seem fine. Did you replace them ?

Did you clean out the oil cooler?

Did you put new rings on the pistons after honing the walls ?

Sorry but you only have 9 post, do you know what your doing ?

heiche 12-15-2012 05:30 PM

ha max! i don't know what i'm doing but i try hard ;)
yes, main and rod bearings are being replaced with acl std size.
yes, honed the walls and will fit new oem rings
oil cooler/warmer looks ok (i know i should replace it just in case)

2many: thx for the pix. actually realized that vaca pdf zooms rather well so i think i have enough detail for sealant placement after all. but thx!

Max Capacity 12-17-2012 01:03 PM

Great to hear you have a clue. Post some pictures up if you get time.

We all like to see or watch... :)

Keep us posted.

Oh yea, the OEM gasket kit has some missing pieces, if you haven't learned yet.

Here try this,

spooln30 12-22-2012 03:37 AM

Did you check the clearances on the main and rod bearings before fully assembling the block. Using aftermarket STD bearings the clearances need to be checked and possible crank polishing or machining maybe required. The way Subaru and every other Japanese engine, their are different size bearings for each main journal per the numbers stamped on the top of block case. Did you also check the end gap of the rings? I've had STD size rings that had no gap and you do need to have the right amount. Too much gap and you'll get too much blow by and low cylinder compression, too little and you'll have gasses trapped between the rings causing bad things. Also did you check the heads and block halves decks for straightness?

heiche 12-22-2012 07:22 PM

thanks, i did some of those things. short block is together. i'll pull the heads apart next to replace valve seals. also coming up during reassembly will be a diy tgv delete, and reinforcing stock tmic.

Max Capacity 12-23-2012 06:16 AM

Are you going to remove both banjo filters ?

Mine are removed.

heiche 12-23-2012 09:51 AM

Hey Max - I haven't completely decided yet on whether or not to remove the banjo filters. I'm torn. I'm leaning towards leaving them in, but promising to check them periodically, and to use the perhaps better oil filter 15208AA160 (discussed here:

heiche 02-14-2013 07:11 AM

Finally finished working on/installing the engine and it started right up first time :) Just have to finish a few details, but it's a relief to hear it purr at idle.

coblue 02-14-2013 10:26 PM

Way to go! I am doing almost the same as you- block and heads are at the machinist.

heiche 02-15-2013 07:57 AM

6 Attachment(s)
Thanks. Good luck with your project.

Here are a few pics from along the way...

Hmmm should it look like this? broken shaft

Wow, these boxer engines are wide and low!

Finally got the case split in half...

Finally got to the top of the mountain, the rest is downhill...
I got lucky - all bearing journals look fine. Replaced bearing shells anyway of course.

Should flow a little better without the restrictions

Finally, it's alive!

All times are GMT -6. The time now is 01:06 AM.

vBulletin Optimisation provided by vB Optimise v2.6.3 (Lite) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.