Engine & Drivetrain
Post messages here about engine mechanics, exhaust, intake, etc. Anything to do with the engine system as a whole.
5,568 topics in this forum
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Oh well, Since I changed water pump, thermostat, and 3 core radiator, my 240z (with L28, triple weber, header, comp cam) dropped water temp from the 240 degree range to 210-225(just past middle line, I would say 60%-70% of the gage. I still have not check the water temp by the cooking thermometer or cheep water temp gage. Is current temp(205-225 degree) safe for my engine? jaynez31
Last reply by 2ManyZs, -
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Hey All Im currently going over the engine bay trying to get it back to as original as possible. In my quest I have noticed that the inlet and exhaust manifolds have been removed before and reattached with incorrect type bolts. Close inspection revealed what I think to be an original bolt remaining in the forward most hole under the thermostat housing. This bolt is a Nissan spec bolt, the head is stamped with a 4 and it has a single lock washer and a single, oversize plain washer. I am yet to remove it so dont know if the washers are integral with the bolts. I thought that "7" spec bolts would be more appropriate for this application, but the car is an early car (believed…
Last reply by 240 in OZ, -
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I was removing my welsh plugs (maybe they are called freeze plugs in the US?) and I think I hit one a bit too hard when I was taking it out. There is a little pipe that comes out from where the cylinder walls meet, it comes out and then goes up to the top of the block....anyway, I actually think I broke it at the top. Is my block screwed? What was that pipe for ? I dont think all of the cylinder walls had the pipe coming out from between them, just a couple. Cheers Ray
Last reply by Ed, -
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Hello 240Z owners, I have a couple of queries about distributors and coils, in an attempt to gain more horsepower out of my L24 - 1. If I swap my standard 240 distributor and "sports" coil for a 280z (or zx) electronic distributor and coil, will that help driveability and/or horsepower? 2. If I reconnect the vacuum hose back to my distributor (or my NEW? 280 distributor), will I get more horsepower from the corresponding "advance" in the distributor? If you don't know what I'm talking about, don't worry - I barely do either! But I heard that disconnecting the vacuum hose which runs from the intake manifold to the distributor (which I did when I added triple carbs and …
Last reply by Bunghole, -
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I'm new to Z car's and dont have a FSM for my 280, just bout it about 3 days ago. Obviously turbo I need help on how exactly i install a blowoff on my 280ZX, what bov i should purchase and which vac nipple do i need too connect it to thank you
Last reply by Ja280ZXT, -
- 11 replies
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Aloha, Just wondering if some of the products produced by Japanese aftermarket companies will fit LHD Z's. They have some nice looking stuff... Nostalgic & GT Sports Works Spirit Garage RS Start Of course, you have to download the Japanese text set for your computer to view most of this stuff. Mahalos, Joel
Last reply by speedyblue, -
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I was wondering if any body knows where I can get the clutch and brake lines that go to the master cylinders. I need the long hard metal ones that lay against the firewall in the engine bay. I broke mine trying to take them off. Do I need to get them made or does some body make new ones I can go and pick up? Thanks
Last reply by Bambikiller240, -
ATF in gas? 1 2
by z_boi- 12 replies
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Hey, is it really safe to put ATF in your gas tank to clean you engine internals. i read this on one of the other threads. does it really work. and how good does it work?
Last reply by frank13, -
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Hi, I am about to purchase my first Z car a 1973 240. The guy has a 74 260 with a good dash and some fair looking fenders, glass, etc. What parts if any will exchange? it was Hunter
Last reply by Hunter21, -
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In speaking with all my motor head chevy/ford/mopar friends, all the rage in oil is this brand called Royal Purple 5W30. Their website royalpurple.com claims independent dyno test results. What is the choice opinion for oil in our Z cars? Should your oil type vary with a stock set up as opposed to a race prepared engine? Vicky
Last reply by hls30.com, -
I have read several places that the '75 280 came with 150hp. However, the plate under my hood says 170hp. What gives? Which is correct?
Last reply by venom42, -
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I've got a 78 280Z, stock except for a K&N air filter, and the other day I noticed that premium (91 or 93 octane depending on the gas station) gas is getting to be almost $2 a gallon. So I thought I'd try the mid grade stuff, 89. I had maybe 1.5 gallons of premium left in there and added about 6 gallons of 89. The engine's been running fine and I haven't heard any knocking, but I was wondering... Is it easy to distinguish knocking from the valve and timing chain noise of early Zs? The descriptions I've heard of knocking are a clickety noise on acceleration, which my car has always made. Just want to make sure I'm not doing engine damage to save a couple of bucks.
Last reply by venom42,
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