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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I just did a rebuild on a L28 engine however I stupidly did not order a new timing chain or tensioner so I reused my old ones. Engine is already placed back into the vehicle but before turning keys just want others opinion on if this tensioner being extended this much is acceptable for a first start and break in? The chain has good tension and somewhat acceptable slack. Rotated the engine multiple times too didn't see signs of it being a problem at least by hand. Any insight would be appreciated.
Last reply by zKars, -
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Has anyone had any issues with the shifter bushings sold by zcardepot not fitting? I installed the pivot bushing at the bottom of the shifter, and pressed the two bushings into each side of the shifter itself. However, when I tried to stick the shifter in between the ears of the transmission to fit the shifter back into place, it wouldn't fit, the shifter bushings are just too wide. I tried using some moderate force, and one of the bushings was actually pushed out of the shifter itself by the ear on the transmission and flew off into oblivion, so now I'm having to order another bushing. Anyone ever encounter this before? Any searching I've done seems to just y…
Last reply by Yarb, -
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Hi, I have a rebuilt original starter which works fine when the engine is relatively cold (assuming at that point starter is also less hot!!!). If I turn off the engine at operating temp. and try to start it again my starter just clicks. It seems that plunger when hot has some issues. It happened to me the other day and I waited for everything to cool down for 20 mins and started the car again fine. I dont believe it is the inhibitor switch etc. I have a rebuilt starter on a different classic car and I am seeing similar behavior. Anyone seen similar issue?
Last reply by SteveJ, -
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I am a new first time owner of a 72 240z. The car has a partial acceleration problem where the car will surge and stumble hard enough to chirp the tires in second gear. This only happens with partial throttle acceleration with rpm's below 3000. Flooring the accelerator causes the problem to go away. I have set the ignition timing at idle to 17 degrees BTDC. I have pulled and checked all of the spark plugs and their color indicates that the fuel mixture is correct. Compression is good and within 10% across all cylinders. I have balanced the carbs which were already very closely balanced. The spark advances with engine speed and the mechanical advance seems to opera…
Last reply by JDziark, -
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Greetings. I rebuilt my 77' 280z a year ago and drove it around for a few miles just to make sure everything was running fairly smooth. The entire engine was taken apart with new bearings, rings, head bolts, etc. I live in California and did not feel like dealing with the smog just yet so I took out the dash and restored it as well as restoring the gauges with Intellitronix inserts. Now I am ready to restart it, should I be fine just to crank it right up or should I follow something like atlanticz's steps to put it back in service? http://www.atlanticz.ca/zclub/techtips/storing/index.html "Putting Back in Service Remove plugs and crank engine at starter to…
Last reply by Zatarra, -
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I bought some new tires and hit the old two lane highways to rack up some miles for the break in. Smiling from ear to ear. Guy in an older 3 series BMW got behind me and heard the sound. We pull into a quick shop and I shut it down talked for a few minutes got back on the road and realized I had a dead skip. Pull over again raised the hood and clackaty clack valve sound. Slowly limped back home to do a hot valve adjustment. Pulled the cover and found a lash pad off #3 intake valve spring. Can I take that rocker arm off and put it back on? The lock nut was tight as I had done a cold adjustment when I put the motor together. Don't understand how it happened but I w…
Last reply by ckurtz2, -
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So. Seen a thread a few weeks ago on one of the face book groups about the proper way to install the pilot bushing in the back of the crank. Actually I think it was about some trans noise the OP was trying to track down, then someone said it might be your pilot bushing, then others chimed in about that and it went on to how to install one. Then does and don’ts. You know how those discussions go. Well a couple of questions have arisen from some of the comments I read, so I thought I’d ask this collective mind about them and see what you’re experience is. Question 1. Some/several said you MUST grease the trans input shaft tip where it goes into the pilot bushing.…
Last reply by zKars, -
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Very fortunate to find this LSD R200. Need help identifying what these were actually identified as.
Last reply by Patcon, -
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After an exhaustive search for K&N E-2910 air filters, I contacted K&N directly. They are NLA as of earlier this year. Where you-all getting your stock air filters from? Nissan likely still has stock ones, but anyone finding aftermarket anywhere?
Last reply by AK260, -
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Thought this may make a good theoretical discussion. While I have far to little time to do the inordinately long list of jobs on my Z (and with school fees ramping up spare cash is drying up fast), I just can’t help think one day I really want to do a triple DU6 conversion!! Just imagine having the only z in the world with these puppies on!!! How cool would that look when you pop the bonnet!? It will need a LARGE balance tube to even out the pulses (which somewhat negates benefits of individual throttles). My only thought is that the best way to feed the vacuum signal to all carbs but without causing cross carb fuelling is to feed manifold vacuum in at the t…
Last reply by jonbill, -
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This isn't a new issue and I don't reall plan to fix it, but I'm curious what causes it. My '77-'78 5-speed trans does not center from the left. The 5/R gate centering spring works fine, but it doesn't center from the 1/2 gate. Is this a common issue and is it fixable without a major overhaul? The trans only has about 70,000 miles on it. I bought a rusty original owner low mileage '77 30 years ago to harvest the trans and interior which are both in my '78. The car sat around for many years, and at some point, the centering spring quit working. The trans shifts great other than the lack of centering. It's the only Datsun trans I've ever had with this issue.
Last reply by Jeff G 78, -
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Mount them dry or sealant on both sides? I have always used a thin layer of sealant on either side of the paper gaskets for the timing cover and it works, no leaks but no matter how careful I am there are always some that squeezes out and looks bad. Anyone had no leaks with just the paper gasket?
Last reply by Mark Maras,
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Mark Maras
