Engine & Drivetrain
Post messages here about engine mechanics, exhaust, intake, etc. Anything to do with the engine system as a whole.
5,552 topics in this forum
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- 10 replies
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I am confused and need some direction. I am in the process of tearing out and rebuilding the rear end. I have a question on the level of gear oil to put in the differential. I have read on here (yes, I did a search) and I remember reading in the past on the tech tips section of Atlantic Z...to fill the diff through the plastic tube on the top of it. I remember seeing a photo using the IV method, a hose and turning the bottle uside down. Both that tip and some post on here read to fill it until the plastic tube overflows, or as I read it, fill up the diff with gear oil. Mine is out of the car ( '77 280 btw) and drained, cleaned and painted. I went to put the fluid in, it t…
Last reply by doradox, -
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Hi all, I've been considering removing the coolant hoses and fittings from the intake manifold, and just running the heater line direct to the water pump.. I have a '73 with a F54/N42( shaved w/ a Delta Cams Stage 2 cam, and header) combo with Z Therapy 4 screw carbs(no coolant through them), and a ZX dizzy. I would love to hear a discussion as to pros and cons. Bruce, Arne, Dave? Has anyone done this? What was the result as far as driveability, etc.? Any problems? I have to admit that I would be doing it for cosmetic reasons to clean up the appearance of the engine compartment. I do live at 5,000' and most of my driving takes place at even higher altitudes if that is a …
Last reply by Pop's Z, -
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Hey guys I need some info on a '72 240Z-4spd. Where the speedo cable threads onto the trans is leaking. Dealers in my area don't have any info on a car that old. Checked MSA & Black Dragon but couldn't find anything. Any info or ideas would be appeciated.
Last reply by motorman7, -
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I have been noticing a strange noise coming out of my transmission. My car has 70600 miles on it, and it is a 1971 240Z with a type A tranny. IN all gears the thing seems very solid. However, when I put it into 3rd, it makes a distinct whine. This whine is only present when I give it gas. When I coast it is quiet. Not sure what this means exactly, but I would like to catch any major tranny failure before it happens so I still rebuild it. No other gear makes this noise. Just 3rd. I have replaced all of the engine/trany/dif mounts with OEM nissan parts. I did put the poly mustache bar bushings in though. Any advice/hints would be great.
Last reply by Arne, -
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What would cause the fluid in the clutch resovior to turn brown ?
Last reply by Carl Beck, -
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Kudos to anyone who knows where "heavy mystery time" comes from. so I discovered this neat little gremlin today while trying to find a carburetor leak after getting the fuel tank reinstalled. This is WAY more interesting than a carburetor leak. With the engine idling and warmed up, I can pull any or all of the FRONT three spark plugs and there is zero difference in the way the engine idles. Not so much as a hiccup. If I pull any one of the BACK three spark plugs the engine begins to stutter and heave like it should cuz it's running on one less cylinder. The idle, at least to me, seems smooth and easy. No smoke, no stutter, nothing that I could see. Valves are adjus…
Last reply by BTF/PTM, -
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So Me and Z_Tyler_Z were at the local Pull A Part stripping a 71' 240Z before they crush it tomorrow. Weirdly enough, got a couple parts for $12 and headed home. Traffic absolutely sucked, so after sitting in the driveway for 5 minutes waiting for a break, I floored it and hit about 6KRPM's and a burst of steam "Puffed" out of the hood to fender area. Nowhere to pull over till I got around the corner. The whole time, I'm thinking "Please be a hose, Please be a hose" "And not the $300 aluminum radiator" So I shut it off and popped the hood to have a steady stream of hot water shooting onto the drivers side inner fender between the coil and the strut tower. So after a cl…
Last reply by Basil, -
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Can anyone help me find a decent fan shroud for my 240z? I ordered the one from motorsport and it's junk for $80. It's cracked in several places and looks very cheap. If anyone can help me find a good plastic or metal fan shroud, I'd greatly appreciate it.
Last reply by Inf, -
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Ok, I know the differences between the l24, l26 and l28 engines when it comes to the bore and the stroke. But what I want to know is if there are any differences between the blocks themselves. My understanding is that the blocks before being bored and sleeved are all identical. In other words, I should be able to take a P30 and convert it to an F54 if I had access to a machine shop and money wasn't an option. Right? My second question assumes that the l24 to l28 conversion is possible and if it is then I should also be able to convert it to a 3.1L displacement like they do at Rebello Racing. I realize that the block may need to be resleeved to accomplish this, but I am ju…
Last reply by Zs-ondabrain, -
- 8 replies
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I'm building an early '72 that currently has the completely stock L24 and 4spd. I'm losing the air pump and emissions garbage if I keep the SU's and stock drivetrain. I may dump a mild cam and header in it if I keep it NA. I've been beating around the idea of going with a custom fuel injection and boost setup with a five speed, in gain of fuel economy and performance. I'm just not sure if I should take the plunge. I know of a Celica GT with a 7MGTE that gets 30mpg, running a stock engine and pulls mid 13 second E.T.'s, which sounds awful tempting. I've heared of people using Mikunis and Webers for throttle bodies. I'd like to go this direction, but I'd like to see this se…
Last reply by DaveBonds, -
- 5 replies
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I have a 1978 280Z with 144+ miles that is a fair weather driver. I've added new carpet, seat covers, dash cover, headlights, tires, hood latch cable and bra. It runs great and when I had the oil changed the machanic I take it to (only does Japanese imports) feels it leaking oil from the rear seal and probably is getting oil on the clutch. Also leaking around the valve cover. His estimate is about $1000. I do have some minor rust behind each front rocker panel otherwise it looks very good. Again, runs strong and is fun to drive. Should I invest in getting the engine work done? Would rather spend the money on rust repair and save for a total repaint. Any advice wo…
Last reply by Richard Oben, -
Hello guys. This past Friday I did an oil change in my Z. Decided to give 20w50(VR1) weight oil a try as the temps here in Tucson are getting a bit warmer. Went to the local store bought six quarts of oil (one spare) and a Bosch oil filter. Put everything together added 5 quarts oil and away I went. When I rev the car up now to about 4k and let the throttle go it will make this rather annoying rattling sound from the valve cover for a few seconds. Any ideas? Is the oil just too thick to lubricate the cam at idle. The pressure is sitting exactly where it needs to. I pulled the fill plug out and the cam is most definitely covered in oil. The sound was not present this mor…
Last reply by Zed Head,
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Jeff Berk
