Guest deadironrat Posted January 24, 2008 Share Posted January 24, 2008 Hey guys, I'm looking at buying a 1972 240Z with the stock engine. I was wondering what kind of performance this engine has? I know stock it has 150HP and I was wondering what it would take to get it around the 180HP range, I dont really want to spend more then 1k on the engine but if it takes it 2k would be acceptable. Whats the best bang for the buck to get this engines performance up a bit? Also I know its not related to the engine, but the car has the stock 4 speed tranny and I was wondering if it would be worth it to do a tranny swap? Thanks, jacob Quote Link to comment Share on other sites More sharing options...
OlderThanMe Posted January 24, 2008 Share Posted January 24, 2008 Stock power at 150hp? maybe on paper...LOL Probably more like 100-110 at the wheels considering the age. For $1,000? L28 engine short-block with dished pistons: $100 P90 head: $200 if your lucky, P79 will work and is easily found. Turbo intake and exhaust manifolds: $120 T3 turbo with stock downpipe: $75 Z31 ECU and wiring harness: $75 bigger 370cc injectors with fuel rail: $250 air fiter: $50 for a nice K&N Personally I like the 4 speed unless you do a lot of highway miles. If it is an around town car then stick with the 4 speed. Good luck! Getting 180hp from an L24 is like beating a dead horse...It just ain't gonna work that well... Quote Link to comment Share on other sites More sharing options...
zeiss150 Posted January 24, 2008 Share Posted January 24, 2008 Hey jacob, welcome to Hybridz. the 72 is a great choice for a Z (I have one). The L24 (the stock engine in the car) is a great engine but its max HP for your budget is about 150 to the wheels or Rear Wheel Horse Power (RWHP). The 150 horse power # your looking at is a bit of a 1970 bull $hit # that they put on the car, It really had about 124 at the fly wheel, which is about 100 RWHP. If you want that 180 RWHP then you need to swap out your engine to the L28 which is the big brother of the L24 (it came with the 280z and 280zx models). now, that engine will only give you 180 RWHP with about 1K-2k in mods. OOOOOORRRRR!!!!!...... you could just go down to the junk yard and (be patient .... very patient it might take a while to find one) find a 1980's 280zx TURBO and pull the engine for about 200 - 500 bucks depending on your junkyards pricing. the engine will bolt right up to your 1972 240Z with no mods. the engines are the same ON THE OUTSIDE but very differnet on the inside. Within your budget of 1-2 K you can easily build a mild turbo L28 that will put down 220 -250 RWHP. The stock L28 turbo engine makes about 180 RWHP, I THINK!!! Or maybe it was 150RWHP either way its way more than a non turbo L28. Now this is just my 2 cents on what you should do. there are about 300 different things you can do with a Z car engine, from the mild stock L24 to a full blown RB26dett that puts down over 600 RWHP, or you can always go the V8 route, I've met one guy at the Z car shows that has a twin turbo'd V8 that his dyno sheet says has 860 RWHP ... but thats a different animal. I would encourage you to READ READ READ. you will find thousands of hours of information that will help you build your perfect Z. Once again welcome to hybrid Z and feel free to ask questions when you hit a dead end with the SEARCH engine. Matt- Quote Link to comment Share on other sites More sharing options...
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