Engine & Drivetrain
Post messages here about engine mechanics, exhaust, intake, etc. Anything to do with the engine system as a whole.
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Getting ready to install my rebuilt motor. Just wondering if I should install engine and trans as unit like the FSM suggests. Or get engine settled in, supported in the rear, then lift trans into place. I've never installed/removed engine/trans as a unit in a Z, but have in other cars. I've got trans jack and load leveler, and a helper, could go either way. Harbor Freight load leveler is scary, hold my breath every time I use that dang thing. Hood removal, reinstallation, and alignment seems the only disadvantage. Anyway, just wondering what others do.
Last reply by Racer X, -
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I am not not sure about a rebuild. I broke everything down and tested along the way. I cant really find anything "wrong" so far. I just took off the valve cover to start inspecting.... any thoughts from image?
Last reply by siteunseen, -
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I know this topic has been discussed quite a few times (and usually starts with this same sentence). I just finished rebuilding my L24, and after getting it in the car and filling it up with oil I decided to give it a test crank to make sure I could build oil pressure. Nada, zip, nothing, 0 PSI. Here's what I've tried so far: Filled the oil filter to the brim Pulled the spark plugs Put ~10PSI of compressed air down the dipstick tube Replaced the sender wire connector with a brand new one Tried with both the old sender and a brand new one (https://zcardepot.com/products/oil-pressure-gauge-sender-240z-260z-280z-70-77?_pos=2&_sid=c56c…
Last reply by Captain Obvious, -
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So i bought a Z that needs engine rebuilt, which i am doing. I only drove it a little prior and couldn't tell any issues with transmission. However, I am considering rebuilding the transmission too. SHould i go ahead and rebuild as i have most things already out or is it one of those don't fix it if you don't know if its broken things?
Last reply by S30Driver, -
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Just got a 71 240z. I am thinking about getting another l24 engine and tranny to rebuild like i want while keeping the original in to drive for now. If i get say a 73 engine and tranny will they directly bolt onto the 1971 car without any mods?
Last reply by Zed Head, -
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Guys. thoughts on this? Is it appear to be a good deal? https://www.ebay.com/itm/REMAN-S30-240Z-L24-long-block-N42-head/324296397134#shpCntId
Last reply by siteunseen, -
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While pulling the axles out of my '72 240z I noticed that the Grease Catcher (#56 below) was damaged, most likely by the bad bearings that were in there or a prior service by a former owner. I'm converting to Disc Brakes and am questioning if I truly need the piece as its no longer available and its too far damaged to bend it back into shape. Based on the image it appears that the grease catcher is used to prevent grease from entering the inside of the brake drum. Does anyone run their rear axles without the grease catcher?
Last reply by adivin, -
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Hi all, I need clarification on setting the timing on my '72 240 Z correctly. I've studied the available manuals, but am still unclear. I have changed plugs, wires, caps & rotor, points and condensor. I am using a strobe light to align the triangular pointer to the notch on the pulley. I've chosen the 2nd notch from the left - with the notches on top, looking from the front of the car. I chose this notch because the Haynes manual says that the left-most notch is TDC, and that each notch to the right of it is a 5 degrees advancement. I've marked the pointer and notch with whiteout for visibility. I have verified that I'm on the #1 compression stroke …
Last reply by madkaw, -
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My 78 280z is currently a rolling chassis and i need basically every piece on the engine bay, a guy is selling his l28 engine + transmission, driveshaft and wire harness for $750. I don't know much about these engines and how to inspect them. He says is a N42 block with N47 head in it and it has over 150k miles pulled from a car t-boned in 1995. I wanted to see what is the price for one of these engines and what checks should i make while inspecting it. Same thing for transmission and driveshaft
Last reply by AK260, -
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Greeting my 5 speed manual transmission has 3 sensors. They all leaked at the sensors’ electrical pins and plastic housing. I’ve replaced the reverse sensor to fix the annoying oil leak. Question is that the other 2 sensors don’t seem to do anything nor any electrical connect to it. These 2 sensors located toward the drive shaft. What would you do? Can I just put bolts to that 2 sensors to stop the leak? Any advert side affect to it? much appreciated regards
Last reply by 240zadmire, -
Engine Rebuild 1 2
by HDAtom- 4 followers
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Hello everyone, first post! I am starting a restoration of a 1977 280z. I am interested in doing as much as the project I can at home to learn as much as I can, even if quality does not come out perfect. I am interested in rebuilding the L28 that came in my car, but I don't know the condition of it and what to really look for. The previous owner took a lot of necessary parts out like battery, fuel tank, and some other things, so I decided to just take it apart and try and figure out if anything is wrong inside the engine. I figured engines are simple (lol), fuel, air, and spark right?? It is already out and I can't do a compression test. I am trying to gauge th…
Last reply by Av8ferg, -
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I've been gone for awhile, been working on a Sunbeam Tiger I found in my neighborhood. Done with that, now back to working on my 73 240Z. Is there a source for the hose from the AB valve to the manifold? I've seen the $300 set for 70-72, not sure if the other hoses would work, and kinda pricey. Yeah, I know, what the heck am I bothering with that smog crap for anyway! ? Thanks, Ken
Last reply by KenFirch,
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