Engine & Drivetrain
Post messages here about engine mechanics, exhaust, intake, etc. Anything to do with the engine system as a whole.
5,574 topics in this forum
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Vapor Lock
by 280z- 10 replies
- 3.4k views
My early 280z struggles to start up when hot. I think this is a problem associated with vapor lock. does anyone else have ideas about what the problem is or how to fix it?
Last reply by sblake01, -
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- 4 replies
- 1.6k views
When installing a new oil pan gasket, what's the recomendation for using an adhesive, such as the Permatex products? In the past I've had good luck on other vehicles just cleaning the surfaces and installing the gaskets by themselves. Right now I've got the engine out on a stand so I want to do it right while it's still easy:classic:
Last reply by zeiss150, -
- 5 replies
- 2.9k views
I'm trying to get the facts here... Did Nissan make a set of competition headers for the 240Z? Is "Nismo" the factory performance arm? Are such headers available in Australia?
Last reply by halz, -
- 4 replies
- 1.3k views
Hey guys, can anyone tell me where i can get some 79' 280zx gaskets? im mainly looking for a rocker cover gasket. Thanks alot.
Last reply by beandip, -
Hey Z people, This is a lame question... but here it is anyway. Is blown Horse Power messured at the rear wheels, or is it messured at the flywheel? Thats, it... Good times, Matt -
Last reply by TomoHawk, -
- 8 replies
- 1.4k views
Title is misleading. I already know where to put the sender for the oil temperature gauge (in the port for it in the oil pan). What I need to know is where to put the sender for the oil temperature warning light. Longacre says only, "Install where oil flows into engine." Is there anywhere to put it in an F54? steve
Last reply by Zvoiture, -
- 6 replies
- 1.4k views
http://www.classiczcars.com/forums/showthread.php?s=&threadid=11830 I asked a similar question earlier, but didn't get an feedback and since then have learned more ... and still have questions. I am getting an 80 280z engine complete with the FI. My current plan is to put it into my 73 240 and run with my round top carbs. I have 2 main questions: 1) am I giving up any HP by using carbs vs. FI? 2) my existing engine (200+k on the bottom end and bad compression) has an E31 head with unknown mileage. The new engine's N47 head (and block) have about 80k miles. Which head should I use I've read that the N47's exhaust ports aren't the best shape and that the exhaust ma…
Last reply by zeiss150, -
- 11 replies
- 2.1k views
Just wondering what I should put on my L28 which is going in a 260z. I have the injection manifold and all the wiring etc, the only thing I have to do is fab up a surge tank and all the hoses etc. If I went to carbies I would have to buy a set as I dont have any at the moment. The L28 will be slightly warmed over (increased comp, mild cam, headers,exhaust) and Im not sure if the hassle of putting the FI on is worth it. My main concerns about the FI is that it will not be able to provide enough fuel (and at the moment Im not prepared to add extra injectors etc) and that it will be too much work to set it all up, but my main concern with the SU's is that it will chew way to…
Last reply by hls30.com, -
- 0 replies
- 923 views
first, i now know that the metal pipe comming off the block is a ventilation pipe so i installed a vavlve cover breather at the end of it. second, the pcv valve that is mounted to the vacume rail on top of the intake im not to sure about. i installed a t and ran the lines from the pcv to the air filter assemblies third, crankcase ventilation, was planning on installing similar brether as ussed on block ventilation does this all sound like a proper way to set this thing up? thanks, dan
Last reply by mtdripo, -
- 11 replies
- 2.3k views
Hi, I remember reading about the 1996 corvette LT1 motor getting some innovative improvements. One of which was reverse cooling. Instead of running the coolant into the engine block and then the heads and out, GM reversed flow and the coolant came to the heads first then the block. The main benefit was that it allowed them to bump compression to 10.4 to 1 for more power. Here is a link to some of the info: http://corvetteactioncenter.com/specs/1996/96technology.html Anyway, I am about to take an E-88 head that I had rebuilt (L-28 intake valves, hardened seats) back when I first fixed up my 240Z, and put it on a low miles F54 L-28 block with flat top pistons. I am goi…
Last reply by hls30.com, -
- 0 replies
- 1.3k views
When I take the valve cover off there is slack on tight side of cam chain. The reason I looked is the chain sounded very sloppy.(Rattling sound). When idling I have 445/290 cam/ isky springs. I didn't install new cam & chain because the showed little wear and lined up perfectly on #1 mark. Update.. It seems when I crank the engine by hand the chain goes slack during highest compression zone. It must be a normal condition when cranking by hand because my other high compression engine that I know runs well, does the same thing.
Last reply by ctomkins, -
- 24 replies
- 3.1k views
When my 260Z (with 240Z SU's) was last tuned it had a vacuum leak on the balance tube, so I'd say it was tuned around that problem. When I fixed that leak, it was running ritch as hell. Now, I've never tuned the SU's before but have read plenty about how to do it. Anyhow, as a quick fix I leaned both carbs off by half a turn which helped quite a bit. Still runs quite nicely other than hesitating a bit when cold (any ideas why?). Anyhow, I had another play with it today and found the the rear carbs mixture adjustment is two and a half turns on the ritch side of stoichometric. (I assume it will be the stoichometric mixture, where you will get the highest idle speed and l…
Last reply by Murph,
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