Jonruff Posted January 30, 2012 Share Posted January 30, 2012 hi i was looking into buying a japanese ea82t for my 1987 gl-10 wagon and i was wondering if there is a difference between the american and japanese engine? Quote Link to comment Share on other sites More sharing options...
ShawnW Posted January 31, 2012 Share Posted January 31, 2012 I don't think there is on the block itself. I would order the newest one they can as the last generation of cylinder heads they had were the best. Like 88-90 ish. Quote Link to comment Share on other sites More sharing options...
Jonruff Posted January 31, 2012 Author Share Posted January 31, 2012 Alright thanks a lot Quote Link to comment Share on other sites More sharing options...
TheLoyale Posted January 31, 2012 Share Posted January 31, 2012 I don't think there is on the block itself. I would order the newest one they can as the last generation of cylinder heads they had were the best. Like 88-90 ish. If I remember right, on the bottom of each head, there will be 3 slashes/lines stating that they are the 3rd gen Turbo Heads. Quote Link to comment Share on other sites More sharing options...
ShawnW Posted January 31, 2012 Share Posted January 31, 2012 Sounds similar to what I remember. I recall gen 1 just being EA82, GEN2 has a Square around this, and gen 3 might be the lines. Quote Link to comment Share on other sites More sharing options...
ShawnW Posted January 31, 2012 Share Posted January 31, 2012 Look here, great photos on how to distinguish the head generations: http://www.ultimatesubaru.org/forum/showthread.php?t=101260 Quote Link to comment Share on other sites More sharing options...
TheLoyale Posted January 31, 2012 Share Posted January 31, 2012 Ah yes! Good picture reference Shawn. Quote Link to comment Share on other sites More sharing options...
zukiru Posted January 31, 2012 Share Posted January 31, 2012 you know I've never even looked to see which I have... I bet I got gen1 on the 86 and gen 2 or 3 on the 88... now I am curious and will have to look... @jonruff is your 87 an 87 or an 87.5? Quote Link to comment Share on other sites More sharing options...
Loyale 2.7 Turbo Posted January 31, 2012 Share Posted January 31, 2012 (edited) Sounds similar to what I remember. I recall gen 1 just being EA82, GEN2 has a Square around this, and gen 3 might be the lines. Gen 1 - EA82 (Alone, those came in the earlier Engines) Gen 2 - EA82 (underlined, those came on the newer engines) Gen 3 - [EA82] (inside a Box) The third gen of heads did Never came stock on any engine, those were improved -reinforced- heads only available at the dealer Kind Regards. Edited January 31, 2012 by Loyale 2.7 Turbo mispelled word Quote Link to comment Share on other sites More sharing options...
donnieru Posted February 1, 2012 Share Posted February 1, 2012 The 3rd gen heads with the box around the EA82 never came stock? My 91 Loyale has them and it only had 63,000mi on it when I bought it. Quote Link to comment Share on other sites More sharing options...
TheLoyale Posted February 1, 2012 Share Posted February 1, 2012 The 3rd gen heads with the box around the EA82 never came stock? My 91 Loyale has them and it only had 63,000mi on it when I bought it. Mine has the Box aswell. Hmm. Quote Link to comment Share on other sites More sharing options...
Loyale 2.7 Turbo Posted February 1, 2012 Share Posted February 1, 2012 (edited) The 3rd gen heads with the box around the EA82 never came stock? ... Mine has the Box aswell. Hmm. Three Different Heads for the EA82, that came marked as Follow: Gen 1 - EA82 (Alone, those came in the earlier Engines) Gen 2 - EA82 (underlined, those came on the newer engines) Gen 3 - [EA82] (inside a Box) Our local Subaru Dealer told us (My Father and I) when we purchased the New Heads Long Years Ago, that those (Third Gen ones) Never came Stock, those were improved Replacement Heads, also some other USMB Members said the Same here... ... Gen 3 heads btw, were not put into any production vehicle to my knowledge. ... gen 3 heads were only installed in at dealer ships no car came with them from the factory thus why they're uber rare ...And as far as Gen 3 heads, there's nothing different about their fitment, but they are almost impossible to find as they were only availible from the dealer after EA82T production had ceased. GD Here, Some explanation on the Heads: http://www.ultimatesubaru.org/forum/showthread.php?t=15437 ...the Gen3 heads have wider valve spacing in the head, which helps reduce the cracks that appear between the seats. They also have thicker casting in the exhaust port area, where these heads are notorious for cracking and leaking coolant. Generally speaking, they are an overall better casting of the same head. Maybe your Subie got Newer Heads at some Point, or are you Completely Sure that those are the Stock ones? Kind Regards. Edited February 1, 2012 by Loyale 2.7 Turbo Quote Link to comment Share on other sites More sharing options...
Loyale 2.7 Turbo Posted February 1, 2012 Share Posted February 1, 2012 But I've Never paid attention to the Heads on the EA82's with Spider Manyfolds... (I've seen very Few of those here) ...Maybe those came with the Boxed Letters? Does anybody has a Picture of the Spider intaked EA82's Heads to post here? Sorry for Hijack the thread... Kind Regards. Quote Link to comment Share on other sites More sharing options...
TheLoyale Posted February 1, 2012 Share Posted February 1, 2012 JesZek is correct, I just took a good look at my '92 SPFI EA82 heads. Their indeed Gen 2 heads (Underlined EA82) The MPFI EA82s might be different? Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted February 1, 2012 Share Posted February 1, 2012 Multi-port and Single-port are different castings. MPFI heads did not have the boxed EA82 symbol till after they stopped making the EA82T - 1990 was the last year that used the multi-port castings and thus no EA82T was equipped with gen-3 heads from the factory. GD Quote Link to comment Share on other sites More sharing options...
donnieru Posted February 2, 2012 Share Posted February 2, 2012 Cool, thanks guys. Sorry to the OP. It is nice to know about these heads though. It explains a few things from my rebuild of this engine. Quote Link to comment Share on other sites More sharing options...
Jonruff Posted February 3, 2012 Author Share Posted February 3, 2012 zukiru it came out in 07/87 im not sure if that makes it an 87.5? Quote Link to comment Share on other sites More sharing options...
zukiru Posted February 3, 2012 Share Posted February 3, 2012 They changed the intake manifold for 87.5. The new one is better but requires some wiring if you have the older model. 7/87 could go either way. Quote Link to comment Share on other sites More sharing options...
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