poopypants Posted March 15, 2010 Share Posted March 15, 2010 Hello all, I am new to the forum but not new to the S30. I've owned several Zs in the past, and have decided to get back into it. I don't currently have a Z. Way I look at it, why have a car lying around when I can only afford to build the motor right now? So I plan to build a nice turbo motor, bottom up, and eventually find a car to put it in. So, that being said, obviously I am starting from nothing. So I ask of the knowledge on the board, what do I start with? I suppose I should I explain what I am hoping to get out of the motor. I do want reliability, and I don't have a specific power goal in mind. I want good power and torque, as much as can be obtained from a fuel injected 2.8L turbo motor, with the possibility of an intercooler. (One more thing. Please don't tell me I should go with a stroked 3.1L with triple Webers instead. I've had plenty of N/A cars before, I want a turbo'd one) Lets start with the block: N42 or F54 ? Does the siamesing on the F54 do anything? Is there a better one over the other? Head: N42, N47, P79, P90, P90a? I know the P90 heads are considered turbo heads (and do hydraulic lifters matter), but would an N42 work as well? Internals: Would stock internals work, or should I go with something different, like forged pistons? The rest: Can come later. One step at a time of course. Thanks. Quote Link to comment Share on other sites More sharing options...
jc052685 Posted March 15, 2010 Share Posted March 15, 2010 I think you have LOTS of searching to do. Welcome! Quote Link to comment Share on other sites More sharing options...
LineC Posted March 15, 2010 Share Posted March 15, 2010 Your free pass Quote Link to comment Share on other sites More sharing options...
poopypants Posted March 16, 2010 Author Share Posted March 16, 2010 Thanks for the link, but everything there I already have a decent grasp on. What I am specifically asking is, since I am starting from NOTHING, what block and head should I try to find to start with? Or does it even matter? I am NOT looking to just pull a junkyard L28ET and stuff it in a car. Hell, I don't even have a car. The benefits that come from using a turbo motor from a 280ZXT (mainly, the fact that turbo is already attached) mean nothing to me. So if there is no benefit to using a L28ET, and I can use a N42 out of a '75, why not? It will probably be cheaper. Quote Link to comment Share on other sites More sharing options...
jc052685 Posted March 16, 2010 Share Posted March 16, 2010 If your goal is <425whp then there is nothing wrong with the factory dished short block. Quote Link to comment Share on other sites More sharing options...
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