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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Light turned green and got off the clutch very light and the car kinda choked but didn't stall. So I ran to 3k rpms and shifted to 2nd. Just driving easy. When I went to 2nd is when I noticed my trans or shifter (gear box?) Started to knock. Any ideas? Its a 77 280 4speed Sent from my Pixel 2 XL using Tapatalk
Last reply by billgtp, -
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Looking at getting a new water pump but I've heard getting one with a cast aluminum impeller is the way to go as it does not erode in the coolant. I checked rock auto but none of them specify which material the impeller is made of. Any recommendations on a pump?
Last reply by S30Driver, -
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I have a freshly built, SU carbureted, L-28 in my 72 240Z, with about 5,000 miles on the rebuild. The bottom end is a 280ZX block with stock dished (turbo) pistons. The head is an E-88 which has some port matching done, and the valves have been unshrouded. I'm running a stage II cam with total timing set at 34-36 degrees. I run a stock cast iron exhaust manifold connected to 2-1/2" pipes running through a glass pack type muffler. I ran a pair of "SB" profile needles in my SUs for a couple of dyno pulls to assess where I'm at. My goal was to build a very street-able engine, without having to worry about detonation. Of course, now I'm looking at potentially bumping power wi…
Last reply by Randalla, -
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Hi Guys! Need a second opinion. Pulling my engine for the first time (77 280z). Front chain is mounted to the sligner, but the 6th exhaust cylinder bolt is sheared off so I can't use the back one. I saw that a few members have used ratchet straps so I got the 1000lb working rating strap and wrapped it around the bellhousing. Could you guys give this a second look before I pull the engine tomorrow? Where should the strap be connected to the leveler? Right now I have it through the rear next to the leveling drive but not sure if that is right. Should I wrap the strap around the bellhousing a few times? And is there anything else I should connect it to…
Last reply by Zed Head, -
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Found a local 280zx 5 speed trans out of a 1980 NA 280zx. Trans moves pretty easily through 1 to 5, but I can't get it into reverse. Still installed in car, but car is not operational so I can't test it. Owner has no history, picked it up as a parts car. Is there any safety device in the older Zs which would prevent the car from going into reverse like a collar or a sensor? Worth buying to rebuild knowing that reverse is currently not functioning or best to run away? Price is $100.
Last reply by Tristan, -
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So I know the engine is blue. is it better to keep the stock blue color.. for value? Collector wise or can I change it to black. i reallly don’t like the stock blue haha
Last reply by texasz, -
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Hey guys it’s been a minute. soo my 77 280z has a glossy finish in the cylinder walls. Is this normal on a stock car or should there be cross hatching. I don’t want to build the bottom end.
Last reply by 280zdude, -
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Howdy, Going to do my rear struts and thought I should think about my half-shafts. Currently running the original half shafts that I have replaced the u-joints awhile ago. I have a spare set of half shafts, so wonder if I should find someone to rebuild my spare set or should I switch over to CV joint driveling? I guess two questions, which is a better option? IF I was to send out my half shafts to be rebuilt, where is a good place to duo that? Any advice is greatly appreciated Enjoy Bob
Last reply by Zed Head, -
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I was going over some options on how to get as much HP out of the L28. What kind of modifications to the L28 can be made without major engine work or overhaul (such as boring the engine or replacing it). Would anyone here suggest putting in an exhaust turbo or intercooler for the L28; or would this just be a waste of time? The stock L28 hp says 170hp at 5400rpm; and I was curious if this engine could push more than that? I like the idea of getting as much power out of the L28 as possible; and even considered throwing a 280zx turbo in my car; although I would prefer to keep it stock, and see how much I can squeeze out of the stock hardware (engine/trans).
Last reply by dutchzcarguy, -
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Okay, who's hoarding all the yellow 240Z 16 tooth speedometer pinion gears? No problem getting the 17 through 20's, but not the original yellow one. 🤔 Found one from another guy in town, but it's teeth didn't look so good. Using it anyway. Ken
Last reply by KenFirch, -
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This video showed up in my YouTube feed. I can see a variation of this working to fill the differential or transmission while under the car.
Last reply by Freez74, -
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Hey guys! Just a theoretical question here. I can't find really anything online about z owners who are running the 260s comp cam on their L28e or Z for the matter. So I figured I'd ask if anyone has, or knows anyone who has, used this cam on their Z. Does it make any noticeable difference in hp or torque? Is it able to be used with a stock 280z EFI system? Would you recommend it for someone trying to find just a slight bump in power? Really just trying to start a conversation of what your thoughts are about this cam. Here is a link to the cam I am talking about. https://zcardepot.com/products/performance-camshaft-comp-racing-cam-240z-260z-280z
Last reply by ckurtz2,
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