idosubaru Posted September 24, 2005 Share Posted September 24, 2005 anyone know for sure? or how to find out? Link to comment Share on other sites More sharing options...
archemitis Posted September 24, 2005 Share Posted September 24, 2005 everything i have ever read, or seen says the cams are the same for all ea82s. im sure i could call my dealership and bug them with the question, but never have. Link to comment Share on other sites More sharing options...
idosubaru Posted September 24, 2005 Author Share Posted September 24, 2005 1stsubaruparts.com. funny thing is it lists different parts....or at least different pricing for the XT and XT Turbo. but it doesn't show actual part numbers. BUT - this is where it gets funny, all EA82's (turbo, non-turbo) have the same cam EXCEPT the XT NON TURBO? this is assuming that the pricing indicates the same cam, which makes sense. the XT Non Turbo has a different priced cam than all the rest???? according to the pricing: A $143 cam for all EA82T's, all EA82 coupes, SPFI's, sedans, and wagons. BUT - the XT nonturbo has a different cam for $276. All EA82 cams are indentical with the exception of the nonturbo XT? figure that one out? Link to comment Share on other sites More sharing options...
archemitis Posted September 24, 2005 Share Posted September 24, 2005 the only thing i can think about that is... the xt is the best car to look for na mpfi. its pretty rare to find na mpfi in a wagon or sedan or anything else, so maybe the na mpfi motor had a different cam? it does seem wierd that the 9.5:1 na motor came with the same cam as a 7.7:1 turbo motor... thats it, im callin my buddy at subaru Link to comment Share on other sites More sharing options...
archemitis Posted September 24, 2005 Share Posted September 24, 2005 doh, closed on saturdays, wish harley was :-\ i'll have to call monday. by then, im sure somebody will post some scans of parts books, or something Link to comment Share on other sites More sharing options...
All_talk Posted September 24, 2005 Share Posted September 24, 2005 I believe all the cams are different for carb, SPFI, N/A MPFI and Turbo, and I'm pretty sure the early EA82T '85-'86 is a diff cam than the late '87+, note the ratred HP change from 111 to 115, Maybe the '85-'86 turbos used a cam from one of the other induction types? Factory part numbers should tell us. Gary Link to comment Share on other sites More sharing options...
archemitis Posted September 24, 2005 Share Posted September 24, 2005 i always assumed the flapper style efi system just made less power than the updated hotwire system. Link to comment Share on other sites More sharing options...
simple monkey Posted September 24, 2005 Share Posted September 24, 2005 What kind of power gains would happen on a turbo engine with NA MPFI cams? Link to comment Share on other sites More sharing options...
TomRhere Posted September 24, 2005 Share Posted September 24, 2005 Thought that the Turbo cams had less over-lap of the valves, or something like that. Link to comment Share on other sites More sharing options...
idosubaru Posted September 24, 2005 Author Share Posted September 24, 2005 found lots of thoughts in searches that's why i was trying to find something definitive. Link to comment Share on other sites More sharing options...
NorthWet Posted September 24, 2005 Share Posted September 24, 2005 I am basing this post on memory of what I believe that I read in my 85 FSM (currently on loan to Scoobywagon). IIRC correctly, for 1985, the Turbo cams had very little overlap compare with the non-turbo. I don't remember anything about duration or lift specs. I would think that you would be disappointed in performance of high-overlap cams in a turbo application, at least at low-to-mid engine speeds. Low-overlap cams should pump up the low-end (and fuel economy) of a non-turbo engine; it might also push it to more easily detonate. Link to comment Share on other sites More sharing options...
idosubaru Posted September 24, 2005 Author Share Posted September 24, 2005 one day i'll start a thread you don't reply too...... you said "low overlap should pump up fuel economy". so if the turbo cams are indeed lower overlap those would be better to use on an NA setup for best gas mileage (highway driving). Link to comment Share on other sites More sharing options...
WJM Posted September 24, 2005 Share Posted September 24, 2005 IIRC...the 85 86 turbos used the same as the CARBs. In 1987+ all turbos came with specific turbo cams. Otherwise, SPFI and MPFI had specific cams....as well as CARB. This stright from the aprts catalog. i will look at my paper one again when i get home to confirm. Link to comment Share on other sites More sharing options...
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