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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- 3 followers
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Hey guys, I have a 1978 Datsun 280z, Currently running an N42 Block with a rebuilt E88 head from a 260z (least desirable from what I hear but was all I could find at the time), I have triple weber dcoe 40s and headers from topendperformance. I also have an MSD ignition 6AL and 280zx Dizzy and a rebuilt 5 speed with the longer gear rations I am also running a felpro 1.2mm head gasket which has 89mm bores (My L28 bores are 86mm). Also have a lightweight flywheel to add to all this. I have had this setup for almost 2 years now and never touched the block in the 5 years I have owned the car. The car also weighs a surprising 2460lbs As of right now my compression is pretty low…
Last reply by Zed Head, -
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This Z hasn't been driven in over 10 years. I started recovery by oiling the cylinder walls and cranking by hand. I eventually graduated to actually running it. There was a sporadic 'chirp' noise, which went away quickly. After some A/F tuning, I got a smooth idle, allowing a trial run around the block. But then fuel tank issues added a 2-month delay. Yesterday when I started it, it began well enough, then the 'chirp' noise returned and stayed. I then noticed that the noise occurs even when only cranking - occurring on every second revolution. I might assume this is valve related - perhaps a bent stem or otherwise sticking valve. Vacuum is dead steady, but I …
Last reply by Roberts280Z, -
- 1 follower
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Hello, i disassembled my L28 cylinder head yesterday and I was wondering why my rocker arms are not all marked the same. Are these original Nissan rocker arms or were they already replaced by a previous owner? Thank you for your help. JagoBlitz
Last reply by Zed Head, -
cooling help? 1 2
by kully 560- 2 followers
- 15 replies
- 1k views
I have a cooling question I installed a champion 3 row aluminum radiator with a spal 13" electric fan and a nissan brand 180 degree thermostat. now my fan sensor is a american volt brand that is 200 degree on and 185 off that is installed in the thermostat housing cover. at highway driving my fan runs all the time. around town it will cycle on and off. I do not think this is normal for highway driving at 70 degrees outside. anybody have a thought ? in the old days the water pump would leak when bad the seal. not leaks at all and I run water wetter with premix prestone antifreeze. thanks
Last reply by SteveJ, -
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Greetings folks I’m in the process of rebuilding the transmission and has the driveshaft out. The driveshaft’s U-joint are irreplaceable, base on this forum and many other sources online. However, some did suggest it can be done and I also saw some YouTube that people just hammer out the similar U-joint with the stakes in it. I wonder has anyone done this before and did it leave any major burr, marks of the stakes. I also read the alternative U-joint is made by company Rockford part number 430-10 if anyone has done this and has some photos, much appreciated regards
Last reply by siteunseen, -
- 4 followers
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Hi guys, My current copper/original radiator has had it, it's cracked at the top and full of sediment so it's not cooling well and needs to go. I've heard horror stories about the aluminum radiators on ebay with the tabs not matching up with the mounting ones on the car. Does anyone know a brand that is literally a drop-in fit without having to bend tabs/drill/mess with the car to get it to fit? I would also like to continue using the belt-driven fan and so the original fan shroud would need to be mountable on it too. I know everyone says the aluminum ones don't cool as well but that never made sense to me since modern car radiators are aluminum as I unde…
Last reply by w3wilkes, -
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Hi Guys, Need to make sure i do this right. Gasket was torn and i am putting a new one. So clean the valve cover side and apply high temp sealant? put the gasket on top and tighten. Nothing on the engine side. Also, there are groves in the valve cover, do i have to apply the sealant all around the perimeter? (dumb Q i suppose!!!). Better ask than mess up. Can you advise?
Last reply by Yarb, -
- 5 followers
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Well I am installing one for a friend on my recommendation but what a piece of $^!#!!!!!!!!!!!!!!!!!!! It does not fit!!!!!!!!!!!!!!!! I've installed several Cannon, TWM, and even a Lynx but this is the first fitment problem. It looks great and performs well mechanically but come on!!! The Cannon that it replaced works fine. It will not fit properly against the header flange AND the stand-off for the rod hits the thermostat housing fittings. P O S !!!!!!
Last reply by rexz, -
- 2 followers
- 5 replies
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Hi Guys, I am speechless where the modulator is located in the 77 280z. Mine is automatic. What is the best way to get this thing out? Also, seems like this is a threaded modulator but on the other end of the modulator there is no way to tighten it? its all around all over!!!
Last reply by MH77280Z, -
- 1 follower
- 5 replies
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I am looking to install an electric cooling fan switch in the upper thermostat housing . anybody know where to purchase one, and what temp would I want for the fan to come on with a 180 degree thermostat .also what about the thread size if anybody knows that . thanks
Last reply by EuroDat, -
- 2 followers
- 3 replies
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well time to get the z going again and I hope ever body has a safe season this year!! my question is I have a 1974 260z with a 1983 zx motor . I would like to change the oil pressure sender and I see on rock auto the 1974 260z has a different part #. the 260z takes a standard part # ps171 and the 1983 280zx take a standard ps173 .so with a 280zx oil pump what would be the correct part # I believe I should use the 260z part # to go with the original gauge but what is your thoughts .thanks
Last reply by kully 560, -
- 5 followers
- 12 replies
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What are you guys using for coolant these days? The water less coolant seems interesting, but there are drawbacks. Mainly, if you have an issue while on the road, you're kinda screwed because it doesn't play well with water. It is also a bit more expensive. I am running my stock radiator, so there is a mixture of all types of metals going on.
Last reply by Barefootdan,
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davewormald
