Engine & Drivetrain
Post messages here about engine mechanics, exhaust, intake, etc. Anything to do with the engine system as a whole.
5,549 topics in this forum
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- 11 replies
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OK, now that I have the tranny taken care of, its time to work out this minor hesitation that I'm getting at around 3,500 or 3,800 rpms. I'm almost scared to get it running too well, the 4.11/4-speed combo is a real screamer, I almost lost the car sideways shifting from 1st to 2nd at 4,200 rpm's, pulling onto Route 44 today. Background....stock L24, new ZTherapy carbs at about 3.5 turns out, (rebuilt) 280ZX dizzy with new vaccuum advance unit and new breaker plate (E12-80 unit is old - is this possibly a problem?), new MSD Blaster 2 coil. Dizzy has 8.5 degrees of mechanical advance (17 total) and vacuum advance works. I get about 25 degrees of total advance. Have ini…
Last reply by Weasel73240Z, -
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Ok, an update. Got the car last week-end... What a difference. New cop head gasket, 085mm more thickness. New SU carbs. New lighten flywheel New pertronix ignition, to replace the old unit and no more points. Brand new radiator Car does not ping anymore, accelaretion is steady. You have a Happy Guy. __________________
Last reply by guy_geo, -
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How do you read that? "the timing for that cam is 104 deg full lift inlet valve" Is that 104° before TDC? Thanks
Last reply by Caen Fred, -
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I'mo looking at the compresison ratio of the head I have on my engine.. 10.5:1 ???
Last reply by guy_geo, -
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Hi, has anyone an information that might help: Looking at building a 2.8 motor with the following: 2.8 block, 2.8 crank, 2.4 conrods, standard pistons and a n42 head. The compression ratio with 2.8 conrods is 8.29:1, where if you use the 2.4 conrods the compression ratio is 10.71:1 Has anyone come across this before, are there any issues with using the longer rods...thanks..any feed back will be fantastic
Last reply by blue 72, -
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After long time no posting because of time the last months I have new pictures to post finally. My SU carbs and the cylinder head I got. I have to clean them and check the interior of them. The cylinder head is at the machine shop for inspection. Now Im back in the datsun project. Thank You EVILC. Im not able to attach pictures at this time dont know why. post them later.
Last reply by DeesZ, -
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Took on the valve seals in both cars today - started at 1030 this AM and gave up at 1030 PM - need two more hours to get it done. Bad luck - first cylinder (first valve) of the 240 I dropped a seal into the timing belt cavity (actually slipped out of my well oiled hand when trying to install).:stupid::tapemouth No way to see it or find it - so I carried on and finished the job thinking it must be going to the bottom of the oil pan and no harm done. I tried a long handled magnet - no joy. No luck at all - started the 280 after supper. First valve/first cylinder popped the old seal and the SOB flew into the air two feet and went right down the timing belt cavitiy. What …
Last reply by Sailor Bob, -
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I'm replacing the clutch on my '73 and I'm looking for advice in removing the flywheel. I've done it before using very primal techniques. This time I want to try something less savage. Ideas? Thanks in advance, ---Chris
Last reply by five&dime, -
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Autocrossing the 240z zed on dirt today and may of leaned on this a bit too much. Its a R180 lsd don't think i have any more r180 bars, do I repair or use one of my 200 bars and put in a spacer plate?
Last reply by Nigel1943, -
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- 2k views
This is my first Z so I am still learning. I'm about ready to put my car on the road, 1977 280Z. I have taken it out for test runs and all seems well. At idle it it seems to be loading up and running a little ruff so I thought it would be wise to check the valve lash. But when I get the #1 exhaust lope in the vertical position the rotor in the dizzy is pointing at #4? If I set the rotor to point at #1 on the cap and the timing mark is set on zero (tdc) the #1 exhaust lope is about 90 degrees off of vertical. Any help would be greatly appreciated.
Last reply by Diseazd, -
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Hey, I just replaced my clutch master cylinder and now the clutch fork is moving in the wrong direction.. The part number for the cylinder is correct with what It shows i need.. What would be causing this problem? Also, there is only about 1-2 inches of clutch off the floor. Its like the rod isnt long enough?? What is this!? 72 240z Stock with a 4 speed from another 240z (everything worked with the old MC)
Last reply by doradox, -
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I'm looking for a good lightweight flywheel and clutch pair for my 71 3L L28. This car will be both street (95%) and occassional track day (5%) car. Interested in light flywheel feedback on what works, what doesn't Ideas? Thanks. Lou:cool:
Last reply by Walter Moore,
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