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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A little backstory… I’m servicing the R-200 rear axles on my ’77 280Z that I installed in the late ‘80s when the orig. pair started to seem a bit dodgey. I don’t remember where I got them, but they don’t match exactly in casting/markings and hardware. However, they both are for the same application, with the same press-in U-joints, and have worked well since the original install. Same internal details in every way save one: the Factory-looking one had the requisite 12 nylon ball spacers, while the different-looking one had but 8. Su-prise, su-prise. So, here I am, hoping that someone out there just might have 4 of the spacers that they could let go of. …
Last reply by Zed Head, -
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Hello, I have a 78 280z and i knew the diff and half shaft were not stock. By looking at pictures i think its an R200 300zx Turbo LSD diff. My problem is not as much identifying the diff rather than what is going on with my half shafts. The axle stub that goes into the diff does not seem to be retained inside the diff at all. I can move the axle stub in and out of the diff. I cant pull it completely out since its connected to the wheels, but i dont think they are supposed to do that. They also look like they are very close to the inner pivot point of the lower suspension arm and i am afraid with the axle stub being so loosely in the diff that it w…
Last reply by Zed Head, -
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So we pulled one out of my car and bought the other one and now we can't remember What is what due to being stored for years. Any help would be appreciated thanks. Sent from my LG-H900 using Classic Zcar Club mobile
Last reply by Zed Head, -
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Finally getting back to getting my engine back together. I noticed some decent groves on the damper/pulley, and wondering if I should use a Speedi-Sleeve. My trusty Tom Monroe engine book doesn't mention anything about them. And if they are used, the seal is riding on a bigger OD which may fail the seal sooner. Or should I try to place it in the cover at a depth where it avoids the grooves, like I did with the rear seal. Attached is a pic, what do you think? Also, the factory color for the water pump pulley is black, right? Thanks, Ken Sent from my iPhone using Tapatalk
Last reply by KenFirch, -
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My 240z has been running rich for a while. The replacement cylinder head was sparkly new-looking when installed 6 or 7 years ago. Thinking about running a spray can of Seafoam through the SU's to clean up the top end. Read some threads on this site about it but they don't mention using the spray type. Seafoam site recommends using spray type except for professional applications. I guess I'd do it by spraying into one carb about 15 seconds and switching to the other one for 15 seconds etc until the can is empty. Not sure I want to do this but read mostly good reviews of it.
Last reply by siteunseen, -
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Hello everyone. I would just like to say thanks for even looking at this post. This is my first post and I'm not even sure if it's going to the right place haha. But I would appreciate some feedback if you're reading this, thank you. So I've been workin on this car for about 4 years now. I know the insides and outs of the motor since I've built it. But I'm running into this insane cooling issue. This is a Datsun 280z 1978, late 77. Running a stock bottom block l28. With an N47 top end from an 83 280zxturbo. It is NA right now. With some performance mods. Recent ac delete and upgraded suspension. Once I was finished putting in suspension. I've done a complet…
Last reply by Chickenman, -
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mine is leaking so i need to know the plug size so i can get a new gasket thanks all sb
Last reply by zKars, -
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Last time after I cleaned the spark plugs there was a noise when the engine started, coming from the head at hole 6. Wondered if something bent in the head from revving it up. Didn't drive for a few days. Today put a new plug in #6. The old plug tested more or less OK, ground side to threads intermittent or bad contact with meter. Did some tune, started the engine, it sounded fine, no noise at #6. What happened ? I guess the sound was a spark jumping but I couldn't see it and the plug looks OK on the outside. It was torqued to spec.
Last reply by kutukutu1, -
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Looking for some advice on installing the rear main seal. I know Nissan has a special tool listed in the service manual. What is the best way if any, to install the RMS without this tool? Thanks
Last reply by siteunseen, -
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Howdy all, First off wanted to say I've been researching vapor lock and I'm not 100% that's my issue. 1. Car starts fine, idles fine if not a bit lumpy. 2. After the car warms to operating temp, head on out for a drive. Idle: 600-800rpm when warm after first start of the day. 3. After 5 - 10 minutes of driving, the car will start to become unresponsive to throttle to the point at which if I give it any throttle at all and take it out of gear, it'll stall out completely, and I have to either jam it back down into gear if I'm going fast enough or just coast over to the side of the road. 4. Once on the side of the road, however, it fires right back up. Oddly, once it start…
Last reply by siteunseen, -
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Hello all! Is there anyplace in the Sacramento area that set up 240Z head lash pads? I will build everything but dont have the equipment to check or do the lash pads. Thanks ! polecat
Last reply by KenFirch, -
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Higuys, I did this about 10 years ago, but today I put the timing light on, and with static timing, it was about 40 degrees! I don't remember everything you needed to do to find the timing notch on the balancer/pulley, but this is what I thought you needed to do: Take out all the spark plugs, and the engine should turn easily? For some reason mine didn't. I used a socket on the alternator bolt, and the pulley turned without moving the belt- there was a LOT of resistance. Should I engage neutral on the transmission? Did I forget something? I was considering loosening the belts, but I don't think I did that last time. Please remind me of the proc…
Last reply by Mark Maras,
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