MrBlah Posted January 24, 2012 Share Posted January 24, 2012 (edited) So, the 1976 280z I picked up last fall has been sitting in my driveway ever since. I've only been doing interior work to it since then. Well, an opportunity has presented itself to me, so I am at least going to entertain it. So, to start, when I bought the car, it already had P90 heads on it. Should be an N42 block(I haven't gotten on my ass a looked). Info I have found tells me that P90 heads on an otherwise stock 1976 L28 motor will give me a ~7.4/1 compression ratio. First off, if someone can confirm that, it would be nice. Granted I haven't pulled the head off to have a look at the pistons. Now, said opportunity is to pick up a full aftermarket BAE turbo kit designed for a 280zx. It is a Rajay turbo that was built by BAE Turbo Systems for a 280zx, it has all the piping, accessories, and turbo manifold for a 280zx. Now, I know it should all bolt on. That's not really the issue here. I know I am a novice when it comes to forced induction. So, I guess it's a question of what all do I need to do? I know I will have more power so a clutch that can take more power will be needed, but I know the car also has a G-Force 4 speed in it, so I expect it to be able to handle the extra power. Yes I have read the write ups in the FAQ section. I think I may also need to sit and really understand what exactly is going on though. Edited January 24, 2012 by MrBlah Quote Link to comment Share on other sites More sharing options...
SleeperZ Posted January 24, 2012 Share Posted January 24, 2012 I doubt the BAE kit will be able to use your old EFI computer, so you may need to go to an aftermarket computer to effectively manage your fuel and ignition. Quote Link to comment Share on other sites More sharing options...
NewZed Posted January 25, 2012 Share Posted January 25, 2012 Quite a few threads pop up if you put - BAE turbo kit - in the search box. If the car came with P90 heads, it may also have an F54 block. Worth a look. It might already be a turbo platform. What is a "G-Force 4-speed"? How is it different from the stock 1976 Nissan 4-speed? Curious... Quote Link to comment Share on other sites More sharing options...
MrBlah Posted January 25, 2012 Author Share Posted January 25, 2012 G Force transmissions, they are aftermarket built for racing. Quote Link to comment Share on other sites More sharing options...
Tony D Posted January 25, 2012 Share Posted January 25, 2012 Fine and good, unless it was a five speed, I've never heard of G-Force doing a conversion to a four speed! Quote Link to comment Share on other sites More sharing options...
Gollum Posted January 25, 2012 Share Posted January 25, 2012 (edited) Don't make assumptions!!! That's the #1 way to ruin something, wether it be building a motor or having a fun night out with friends. Check the block code. Pull a spark plug and get a flashlight shining in there to check for piston dish. KNOW what you have FIRST, then move on from there. Check ECU, does it have the NA pinout, or the turbo pinout? What color are the injectors? P90's don't just magically fall from the sky to land on NA engines. That motor was put together by someone, which means it's now your wonderful job to find out exactly what they did or didn't do. Edited January 25, 2012 by Gollum Quote Link to comment Share on other sites More sharing options...
MrBlah Posted January 28, 2012 Author Share Posted January 28, 2012 You are correct! I obviously wouldn't do anything until I knew exactly what was there. Due to the timeline I have given myself to finish the car, I won't have quite enough time to do everything needed for a turbo right now. For a later project it will be! Thank you all for your insight. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.