ivans imports Posted August 21, 2013 Share Posted August 21, 2013 could you take the tips off and make you own with some hi grade tubing Link to comment Share on other sites More sharing options...
NorthWet Posted August 21, 2013 Share Posted August 21, 2013 Ummm... isn't the adjuster screw on the pushrod end of the rocker? If so, as long as there is enough adjustment in the screw to compensate for the removed material, the rocker geometry should stay exactly the same. Link to comment Share on other sites More sharing options...
Twitch de la Brat Posted August 22, 2013 Author Share Posted August 22, 2013 I have already accounted for this in a conversation with Delta. I had a torque grind applied to my cam, which takes approx .030" off the cam lobe. In my removing .030" off my head/block surface, I have minimal adjustments to be made to my valvetrain My biggest monster is going to be the intake. Which may be getting cut down to fit with some custom piping, or I may just make a custom manifold. But thank you for the reminder Also, on break in, I already have break in oil in mind. I'll be switching to Schaffer's once Its all broken in and happy. Twitch Link to comment Share on other sites More sharing options...
ivans imports Posted August 22, 2013 Share Posted August 22, 2013 drill the intake bolt holes biger theres some room there Link to comment Share on other sites More sharing options...
Twitch de la Brat Posted August 22, 2013 Author Share Posted August 22, 2013 I'm worried about airflow. I may end up filing off the edges of the intake when I bolt it up so it flows better, if I have to oval the holes. Twitch Link to comment Share on other sites More sharing options...
jono Posted August 31, 2013 Share Posted August 31, 2013 no ned to oval the inlet to head holes, unless you have an oval hole drill - just a larger diameter round drill bit in each hole both ends, makes a big difference Link to comment Share on other sites More sharing options...
Twitch de la Brat Posted September 3, 2013 Author Share Posted September 3, 2013 no ned to oval the inlet to head holes, unless you have an oval hole drill - just a larger diameter round drill bit in each hole both ends, makes a big difference I'm going to oval them with a same sized drill bit as the hole, just grinding out the side that needs more space. That way I only have one plane to worry about when remounting rather than multiple. Twitch PS: Or I may just build a custom intake using my old manifold. Link to comment Share on other sites More sharing options...
LeoneTurbo Posted September 3, 2013 Share Posted September 3, 2013 I just received the late 1986-1994 EA71 pistons, see pics. The design seems not much different than the early EA71 pistons. Link to comment Share on other sites More sharing options...
Mykeys Toy Posted September 21, 2013 Share Posted September 21, 2013 Fascinating topic.. Added to might try to pull this off someday list. Link to comment Share on other sites More sharing options...
ivans imports Posted September 22, 2013 Share Posted September 22, 2013 The dealer said is same piston for ea71 and ea81 all ea71 all ea81s ex turbo cars a'm rebiulding a ea 81 for airplane and when resarching pistons this is what we were told by dealer. I oppted for the 94 ea82 pistons as they have the strongest ring lands. And reliability is key. Link to comment Share on other sites More sharing options...
Uberoo Posted September 23, 2013 Share Posted September 23, 2013 hey twitch I have an EA71 engine I am trying to get rid of.If you still need pistions I could pull it apart and pull the pistons+rings for $50 for all four pistons. Link to comment Share on other sites More sharing options...
Twitch de la Brat Posted September 24, 2013 Author Share Posted September 24, 2013 hey twitch I have an EA71 engine I am trying to get rid of.If you still need pistions I could pull it apart and pull the pistons+rings for $50 for all four pistons. MIles? Condition? Known problems with the engine (eg: overheating, burning oil, etc)? Twitch Link to comment Share on other sites More sharing options...
Uberoo Posted September 25, 2013 Share Posted September 25, 2013 Unfortunately I don't know anything about them.The engine was in the back of a vehicle I bought.I had the heads off because I was going to change the headgaskets and run it but while it was apart I managed to loose about 1/2 the bolts/nuts/and pushrods,I suppose that is what I get for building an engine in my driveway.So I decided just to get an EJ22 and not even worry about the EA71. The bores looked very good when I had the heads.I tilted the engine up on the side and poured a bit of oil into the bores and it seemed to stay on top of the pistons so it shouldn't leak much. Link to comment Share on other sites More sharing options...
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