Engine & Drivetrain
226 topics in this forum
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I have a nice 280Z radiator on Facebook Market Place. Somebody asked if it fits the 280ZX. I think they do, but I am not 100% certain. Can anybody confirm the fit??? Thanks!
Last reply by Pilgrim, -
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I keep getting code 34, its installed on a 1986 280zx turbo using the 280zx turbo det sensor. I am guessing that is the issue. But would also like to confirm a few things. What is the unloaded voltage supposed to be, I am getting 3.8vdc from the wire harness pin 21 to ground. With a 700 ohm (that is what the 280zx knock sensor ohms out too) the voltage drops to about 100mv or about .1 volt. For fun I used a later model knock sensor (2 wire modern type that ohmed out at 500k) and the voltage drop was to about 2v For those of you that have a 1986 300zxt, I would like to know what the unloaded vs loaded voltage reading you are getting at the sensor…
Last reply by Dave WM, -
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Hey gang, I will be working on a friend's 1981 280zx over the weekend but after looking at a few FSMs for 208zxs (on nicoclub & xenonzcar) they don't seem to have the ET Engine Tuneup chapter that comes in my 1978 FSM. I know they're both L28 engines but are the tolerances, valve lash values, etc identical? Is there a different manual specifically that has the tuneup specs for the ZX cars or should I use the 1978 manual's ET chapter?
Last reply by chaseincats, -
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I plan to use a 1985 turbo ECU on my 280z. I am custom building a wire harness. Thing is the OE Z31 uses a switched ground for the pump. The S30 uses a switched positive. I want to make this a plug and play as possible, which mean using the under dash 4 pin plug that feeds the switched positive to the pump. Below you can see how the ECU has constant power to the pump with a selectable ground. One ground is thru a relay (full pump power) switched by pin 20, the other ground is thru the ECU (pin 108) which has a voltage drop across it. My plan is to just use the pin 108 to control the relay coil ground and configure the relay as a normal switched battery po…
Last reply by Dave WM, -
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I'm removing my differential to install a LSD*. While at it, I was looking to see if I need to address anything else in this 49-year old car. I've seen detailed videos on rebuilding half shafts and was wondering what could possibly require rebuilding on them since there is so little movement this component needs to experience. The universal joints appear to be fine so far. *BTW: I decided to go with a KAAZ unit because I like their technical support, ability to adjust (although not easily) and I found a great price including shipping if I order them from a Japan-based vendor. Jeff
Last reply by Mike, -
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Fuel pressure regulators for these cars are getting harder to find. The '77 and earlier EFI cars use a different design, with two regulated fuel inlets, that remains somewhat available. But I can't find the single-inlet version for the '78-83 cars anywhere. I'm looking because I'm considering an aftermarket fuel rail for my '77, which would eliminate the need for the dual-inlet type. The usual sources I'm familiar with are out of stock for the later FPR. Some owners have retrofitted aftermarket adjustable FPRs. But only a couple use vacuum reference like OEM. Also, most aftermarket FPRs only go down to 3.0 bar (OEM are 2.5 bar). And they leak down during shutoff, …
Last reply by Yarb, -
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thought I would start a fresh thread to document my journey on getting a turbo engine to run and perhaps install in my 1975. I say perhaps since at this point my main interest is to learn about turbos, and if I like what I learn I may install but will make sure its reversible since my car is an excellent example of a survivor. So now that all the qualifiers have been stated... as titled its a 1983 i assume based on the P90a head with the hyd lifters. So far all I have done is mount the engine on a test run stand that and I have attached manifolds and EFI for NA testing. I will be swapping out the dizzy drive to use the standard dizzy since that is what i have used on…
Last reply by Dave WM, -
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I have started replacing the u-joints the 240Z I am restoring. I think the u-joints I removed are original to car. Can anyone confirm? What tells me they are factory? Well, there is a fair amount of evidence from looking at the history of the car, the receipts, and the amount of crusted dirt that was on the u-joints. Basically, the car appears to have about 120k miles on it - a notable amount of crust that I had to remove from the u-joint spider, and the snap rings I removed look just like the ones that came with the NOS u-joints (different from all the aftermarket u-joint snap rings I have ever seen). Anyway, on to some selected text from the fac…
Last reply by Zed Head, -
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As I was glass bead blasting the axles from the car I am restoring, I noticed something I have never seen before, an arrow on the casting of the factory (I think) u-joint: I note in the direction it is pointing, it seems to me that the area of the casting between the journals is flatter than the other, similar areas. Is the arrow indicating that a grease fitting should be installed on that "corner"? Also, can you drill and install grease fittings on installed u-joints?
Last reply by Captain Obvious, -
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Hello, I own a 280Z and in the book "How to Modify Your Nissan & Datsun OHC Engine" by Frank Honsowetz he describes enlarging the oil-jet from 2.0 mm to 3.17 mm to increase oil flow to the head to improve oil lubrication of the Cam and rocker arms. I found out that the L28ET uses a different oil pump and different oil jets. Unfortunaly, I cannot find the bore size of these jets anywhere and I am really curious if the Nissan engineers increased the oil flow to the cylinder head for the Turbo version. Does anybody have the opportunity to measure the openings of the oil jets for me? Thank you very much.
Last reply by JagoBlitz, -
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I am currently disassembling an L28 engine (F54 block, P79 head) from a 280ZX that I bought from a guy several years ago as a potential spare engine. When I removed the camshaft I checked the marking on the firewall end and it is clearly marked with a "K" and nothing else. It is a Nissan cam with E30 and Japan cast into it. I tried researching this camshaft but it isn't listed in the typical sources. What I've come up so far is that it may be from a Canadian 280ZX or a Maxima L24e. Does anyone know the specifications for this camshaft? Thanks, John
Last reply by jpc3006, -
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Mixing and matching parts from three not-nice 240s to create one really nice one, I'm confused about differentials. There is the 180 and the 200, and both seem to be shown as standard for the 240. Was one an option, or was found only on later cars? Thanks, Richard McDonel
Last reply by EuroDat,
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