jonathan909 Posted March 31, 2021 Share Posted March 31, 2021 I'm reassembling this thing, and just noticed that the washers on two of the eight long block bolts are smaller than the other six. I didn't note where those bolts were when I pulled it apart. Does it matter where they go? The FSM doesn't indicate anything, and these don't appear to be like the head bolts (where a few of the washers have to be smaller in order to seat down in the casting). In this case, the larger washers seem to fit in all of the bolt positions. Wtf? Quote Link to comment Share on other sites More sharing options...
idosubaru Posted March 31, 2021 Share Posted March 31, 2021 This suggests the washers and bolts may differ - there might be two washers on the forward most bolts, but it says "1 PC" for EJ25 - 1 per side = 2 per block? https://parts.boardmansubaru.com/showAssembly.aspx?ukey_product=71867255&ukey_assembly=6463996 Quote Link to comment Share on other sites More sharing options...
idosubaru Posted March 31, 2021 Share Posted March 31, 2021 It's been a few years since I pulled EJ25 block bolts so I'm not working from any memory here. Quote Link to comment Share on other sites More sharing options...
jonathan909 Posted March 31, 2021 Author Share Posted March 31, 2021 Ah, thanks - that solved it. I had to stare at the drawing for a while, but the six with the thick washers are the ones inside the block proper, in the coolant passages. The thin washers are used on the two short bolts up front between the oil and water pumps, and on the two rearmost long bolts on the outside of the block. Quote Link to comment Share on other sites More sharing options...
idosubaru Posted March 31, 2021 Share Posted March 31, 2021 5 minutes ago, jonathan909 said: Ah, thanks - that solved it. I had to stare at the drawing for a while, but the six with the thick washers are the ones inside the block proper, in the coolant passages. The thin washers are used on the two short bolts up front between the oil and water pumps, and on the two rearmost long bolts on the outside of the block. Same here. It wasn’t what I was expecting. Quote Link to comment Share on other sites More sharing options...
jonathan909 Posted April 2, 2021 Author Share Posted April 2, 2021 Oh... yeah... right... duh. I don't know about all-y'all, but I'm kind of a slow learner, I don't do this often enough, and this is one of those little details I have to re-learn every time. The thick washers are the ones with the rubber seal molded into the ID, which is kind of obvious for bolts whose heads are immersed. Quote Link to comment Share on other sites More sharing options...
idosubaru Posted April 2, 2021 Share Posted April 2, 2021 3 hours ago, jonathan909 said: Oh... yeah... right... duh. I don't know about all-y'all, but I'm kind of a slow learner, I don't do this often enough, and this is one of those little details I have to re-learn every time. The thick washers are the ones with the rubber seal molded into the ID, which is kind of obvious for bolts whose heads are immersed. Normal. I rarely pull apart blocks and trans, and the FSM is out for anything headgaskets or worse. Quote Link to comment Share on other sites More sharing options...
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