Engine & Drivetrain
Post messages here about engine mechanics, exhaust, intake, etc. Anything to do with the engine system as a whole.
5,547 topics in this forum
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Hi yall! First post here. I've been trying not to ask too many questions and research on my own before begging for help, but I can't seem to find this answer. Other posts where close but not quite. I'm rebuilding a '72 240Z (Feb). The car wasn't running when I bought it, so I'm nervous to rely on previous owner's status quo. The smog system was removed and the two hose spots I highlighted in red are were empty when I got the car. Parts manual calls it a "hose pipe connector." If I keep it open like previous owner had it, does that have long term effects on the engine? Like can gunk find its way inside? Do I install a hose just to cover them? Or block off totall…
Last reply by Areitzer, -
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Hey gang, On a '78 I'm told the cam is 'internally oiled' (instead of using the oil spray bar). What does that mean and are there holes somewhere on the cam that spray oil while rotating or something? I looked but didn't see any... -chase
Last reply by siteunseen, -
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I don't see any other threads like this on here, so I hope this is not inappropriate. Honestly I don't care for the HybridZ website, so I don't feel inclined to post there much. This is my long term plan for the 280Z. A neighbor who is also an old car buff stopped by about a month ago, he told me his wife's uncle had an '06 350Z that wouldn't pass inspection in RI ( I had told him earlier that I was considering a drivetrain conversion at some point in the future). The car is mechanically sound, so having the entire vehicle for the cost of an used engine & CD009 trans of unknown pedigree made sense to me. My personal experience with buying JDM drivetrains has not …
Last reply by grannyknot, -
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I finally got a lead on a 5 speed, which has been sitting on the shelf since the mid 90's at a Sacramento manual trans business . Went to look at it, appeared to have a close ratio tail housing. Did a quick check of the 1st and 5th gear ratios by marking shafts and turning, not too accurate. Estimated 5th was .773, and first was 3.6, which I thought odd. They recently replaced the seals since it was sitting for so long, and came with 1 year warranty. They unfortunately painted it gray, ugggh. Anyway, decided to buy it. It looks like like a typical close ratio tail shaft housing, no dust shield, bottom speedo bolt, one rear tab, reverse lockout plate. Its does …
Last reply by SteveJ, -
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Hey Guys, I have been trying to tackle an elusive problem on my Z that has been happening since late last Spring. The issue is that During a cold start, the engine taps extremely loudly for the first few seconds, then goes away and it sounds normal. Then once it is warm it seems to just slightly tap, but not nearly as loud. If I let it sit for a little and then start it hot it will tap loud again during startup. However, sometimes about every 10 starts (different days) during hot or cold start I won't hear any noise. I tracked the tapping sound to the head toward the front of the valve cover. I am thinking 2 or 3 valves back from the front. However, I have…
Last reply by dutchzcarguy, -
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I've got my 4 speed out to fix an annoying drip, replacing both front and rear seals. Spent an hour or so cleaning up the input shaft housing, old Permatex on gasket area, and sealant on threads and washers. Threads go into case, so FSM calls for sealant on bolts, but not much else for help. Ready to put back together, and obviously don't want it to leak. What is the best practice folks have found to get this leakproof? Thanks!
Last reply by KenFirch, -
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Got my intake manifold back from the machine shop, and the EGR gallery has corroded so thin you can poke through it with a screwdriver. I have a sinking feeling this manifold is toast, but with a flashlight in it I can't tell whether the ports between the EGR gallery and the intake are open. Anyone have any insights?
Last reply by ArcticFoxCJ, -
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- 6 replies
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I'm trying to determine the gear ratio on my R180. There is a number on the ring gear of ?? x 394 Does this mean 3.94:1 ? Should I just see how many turns of the differential input is required to make a full revolution of the ring gear? Can anyone assist in decoding this? Jeff
Last reply by Jeff Berk, -
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Hi folks: It's been a minute since I was on here last, but after much dithering the boys and I *finally* got our rebuilt harmonic balancer installed on our '74 260Z. My question is... How do you know it's seated where it needs to be on the crankshaft? It *looks* about right but is there a surefire way to know? Our latest video: Thanks in advance, MC
Last reply by DadAndLadZ, -
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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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