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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- 3 replies
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Just tore down a short block. The folded mesh material in the block where the tube to the PCV valve has rusted to mush. Is there a synthetic material substitute that can be used to replace it?
Last reply by 240260280z, -
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- 15 replies
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Ok, I realize I have a drive line or half shaft issue but looking to confirm. Installed the RT diff mount, which made a huge difference! But I am finding an increasing vibration at 3000 rpms and above (gets worse, the higher the rpms). When I let off the gas, the vibration goes away, so is my assumption correct? Anything else I should check? Have an 83 5 speed and R200 diff installed. Visually, don't see any issues with u-joints, but that doesn't always mean anything. Thoughts? Thanks!
Last reply by 240slidekat, -
- 4 replies
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So I've had my 260 for a while now, and when I tuned the carbs in the past I've used a unisyn to balance and done the rest by ear. But this week I looked up more advanced ways of tuning like using a vacuum guage and using the tabs on the bottom of the carb to lift the piston.(I also tried using a colorTune but it turned out to be the most worthless thing I have ever bought, my engine was almost stalling on the road when it told me I was in the "bunson blue perfection zone") After using all these tests(besides the ridiculous colorTune) they all imply that I am too lean no matter what I do. Float bowls as rich as they will go and mixture knobs all the down. The car runs …
Last reply by doodles526, -
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Just cleaned up a 4speed z transmission and noticed a crack in the casing (see attachment). I tried to turn the bolt to inspect further and it let go. Is this a common failure point?
Last reply by zKars, -
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Hey guys, So i took apart my 5speed today to make sure everything is ok internally before i swap it in to the car and to just count the ratios and they aren't adding up right. All I'm doing is counting the teeth on the gear and dividing by each other to figure out the ratio. Im getting first as 2.3 and 2nd as 1.4. Any ideas? Do these things have a reduction gear somewhere that i'm missing? below is a pic.
Last reply by doradox, -
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Can anyone confirm what the proper vacuum reading should be on a carbureted L28 at idle? Thanks Guy
Last reply by Diseazd, -
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I've joined this forum to get some advice on a project car my Dad and I are working on. Dad bought the Zap Colour car new in 1972 but when I was born in 1980 he stopped driving it. It then sat for nearly 30 years at my grandparents' until we decided to restore it. However as you might imagine the car's engine refuses to turn over. We have tried to turn over by hand with a socket on the HB and poored WD40 in all cylinders for a period of time. When we try and rock the car in gear it doesn't seem to roll either. We have also tried a new battery and the starter tries to turn but not enough grunt to turn engine over. We know all electrics are fine on the car and working. A…
Last reply by JLPurcell, -
- 11 replies
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Trying to swap clutch pedals from the 1981 280zx and noticing that they're completely different trying to swap it into the 260z. What's the best route? Buy a clutch pedal assembly for the 260z from a parts store? Can I do some cutting so the spring mechanism will work? Ugg... Whole assembly swap?
Last reply by ZohanIsBack, -
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Non turbo. I'm seeing 9 1/2 and 8 7/8. Which one is the right one? 1981 280zx. 5 speed.
Last reply by ZohanIsBack, -
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I know I have a donut gasket leak on my 280z. This car runs like crap cold and isn't making any power. Previous owner did remove all the EGR stuff not sure if this is it. Have some smoke under hard accel, smells rich. I think I might have a vacuum leak causing it to run rich. I was going to do an intake and exhaust manifold gasket. Any words of advice before I try this? Are the exhaust manifolds bolts going to be a bitch to remove?
Last reply by FastWoman, -
- 3 replies
- 2k views
Here's what I'm looking at getting: 1979 280-zx 2+2 with five speed. 140xxx miles on it. I want the five speed in the 260z. Besides getting a new clutch kit, will those parts swap over exactly into the 260z? Will I need to do some adjustments or anything? Any additional parts need to be ordered?
Last reply by ZohanIsBack, -
- 3 replies
- 2.8k views
I hooked a timing light and with with the dist lined with the timing mark at the adjustment nut the crank pulley timing mark is not even close to the timing degree tab. If I remove the dist nut and crank it as far as it will go towards the drivers side the timing mark gets closer to the crank pulley and timing tab but still a good 1/2 inch away from the entire degree measurement tab. Whats the deal. It also seems to idle way too high. All the carb idle throttle speed screws, balance screws etc are backed out to the point they are not even touching anything but the rpms are 1200 to 1300. It does lower when the dist adjustment screw is removed and the dist turned all the wa…
Last reply by lmcguffin,
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