mindcrime Posted April 17, 2007 Share Posted April 17, 2007 Any big differences??? Hopefully this is an easy question. .....and YES, I ran a search. Thanks, Jeff Quote Link to comment Share on other sites More sharing options...
2003z Posted April 17, 2007 Share Posted April 17, 2007 hydraulic lifters on the A model. Quote Link to comment Share on other sites More sharing options...
JMortensen Posted April 17, 2007 Share Posted April 17, 2007 I'm pretty sure the casting is the same. Most USA P90a heads got hydraulic lifters. Some got mechanical lifters. I think all imported P90a have solid lifters. The questions that surround the P90a heads have to do with how large a cam they can cope with and the possibility of having to replace expensive lifters when they go bad. Search some more and you'll find threads on all that stuff. There are also threads on converting the hydraulic heads to solid lifters. Search "timesert" for that... Quote Link to comment Share on other sites More sharing options...
mindcrime Posted April 18, 2007 Author Share Posted April 18, 2007 But the replacement hydraulic lifters aren't offered anymore for new OEMs, so if one is BLOWN, aren't you "up a creek without a paddle"??? Please pardon me, as I am a getting into my performance phase. I've had my '78 280Z since 1991 though!!!!! Now, she's about to get a complete restore and roll cages and some serious hp/torque one way or another (I have TWO turbo engines sitting in waiting.) Thanks! Quote Link to comment Share on other sites More sharing options...
Mayolives Posted April 18, 2007 Share Posted April 18, 2007 Lots of good basic info here: http://datsunzgarage.com Quote Link to comment Share on other sites More sharing options...
mindcrime Posted April 18, 2007 Author Share Posted April 18, 2007 Lots of good basic info here: http://datsunzgarage.com THANKS, I've printed it ALL, but haven't had a chance to read it all yet. Quote Link to comment Share on other sites More sharing options...
1 fast z Posted April 18, 2007 Share Posted April 18, 2007 P90A can be solid, as I have three of them myself!!! The majority of P90A's are hydro, but there are a few amount that are solid, which are exactly identical to the P90's. Quote Link to comment Share on other sites More sharing options...
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