waimaks Posted December 11, 2007 Author Share Posted December 11, 2007 Thank you for looking man thats excellent. That is a ea82 carbed or spfi head I take it? Not exactly as the guy had put it to me but it at looks do-able right? Quote Link to comment Share on other sites More sharing options...
daeron Posted December 11, 2007 Share Posted December 11, 2007 more engine p0rn?!?? Sounds fascinating, I am keeping my eyes on this one! Quote Link to comment Share on other sites More sharing options...
TomRhere Posted December 11, 2007 Share Posted December 11, 2007 WOW!! Nice pics there Archemitis !!!!! That is a huge difference in exhaust port size between the two. I can see why the EA-81 has issues with to large of a header pipe now. Small port dumping into large pipe equals way to much turbulance. Exhaust gas flow should be smooth for best results. Quote Link to comment Share on other sites More sharing options...
archemitis Posted December 11, 2007 Share Posted December 11, 2007 it looks doable, to a certain extent... 1.rocker arms need to be spaced, differently. the ea82 valves are just a hair further apart than the ea82s. it would put the push rods at a slightly different angle, which wont hurt anything, just slightly different. 2. have somebody cut aluminum pieces to make the pushrod tube passages meet up with the ea81 rocker covers, ea82 boxes wont work because a rocker arm would hit them. pretty much build up aluminum then mill it flat to mate to ea81 rockers. 3.weld up about a 1 inch square for each rocker base to sit on(2 on each head). then mill it flat, and drill for a stud in each one. 4. theres two holes near the exhaust port that will let oil out once the rockers are redone, so you'll have to weld those up. 5. regrind cams. the biggest thing im worried about is if the pushrod tubes closest to the intake port will clear the port without cutting into it basicaly i dont think you could bring a set of heads to a machinist and say make them work, its going to take alot of R&D. i've got the time and the machines right now, so i think i can pull it off, as long as i dont run out of ambition. thats an spfi head, i plan on practicing on that one, then do up a set of mpfi heads to make it all worth the effort. show that airplane guy the pics and see if hes blowin smoke, or maybe hes got a different solution to make them work... more pics later Quote Link to comment Share on other sites More sharing options...
[HTi]Johnson Posted December 11, 2007 Share Posted December 11, 2007 That oil port on the ea82, I think that's just for the hydraulic lifters or for the cam case lubrication, does it need to be plugged? Great, like we need another thing to draw ea82 heads away from our stock piles...oh oh...Multiport heads on an ea81, you know turbo heads? Quote Link to comment Share on other sites More sharing options...
archemitis Posted December 11, 2007 Share Posted December 11, 2007 Johnson']That oil port on the ea82' date=' I think that's just for the hydraulic lifters or for the cam case lubrication, does it need to be plugged? Great, like we need another thing to draw ea82 heads away from our stock piles...oh oh...Multiport heads on an ea81, you know turbo heads?[/quote'] yes i know about ea81 turbo heads got any to sell me? didnt think so. you dont know about depleted resources, untill you start looking for ea81 stuff, start looking for dual carb, or ea81t and its non existant. Quote Link to comment Share on other sites More sharing options...
[HTi]Johnson Posted December 16, 2007 Share Posted December 16, 2007 Any progress? Quote Link to comment Share on other sites More sharing options...
nncoolg Posted November 16, 2013 Share Posted November 16, 2013 Anything ever happen with this? Quote Link to comment Share on other sites More sharing options...
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