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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- 6 replies
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Hello mates With the temps in the west where I live getting cooler I've noticed something rather interesting about my Z. When the car is started from a cold start - as in left sitting for a few horus and the motor is under 100 degrees - the engine will squeak on startup and run rather poorly for a few minutes. Poorly meaning this: if I press on the gas to raise the idle of rinstance the car will stumble. This only lasts a few moments - the poor running that is - and the said squeaking noise from the engine only lasts a few minutes. Once the engines been running maybe 5 minutes tops the noise is gone. The engine does idle rather low maybe 600 or so RPMs when I first start…
Last reply by madkaw, -
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I'm very new to the classic Z scene and have gotten my hands on a cheap L24 block to cut my teeth on. The block was bored to 0.030" over by the previous owner - and from what I have gathered there are no pistons that come in this size. I have Googled this and have gotten some conflicting/nebulous information. I was wondering if it is possible to bore the L24 0.120" over to take the standard L28 pistons? Some posters have stated that an L24 block can not be safely bored over 0.080" as this would make the walls of the cylinders too thin. Others say there is no issue andthis has been done before. Any chance for a clarification and a little guidance to a serious newbie. T…
Last reply by madkaw, -
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recently installed a new clutch and slave cylinder into a 5 speed and i'm having trouble getting the clutch to fully disengage. the problem visibly manifests itself at the slave cylinder. when the pedal is fully depressed i'm only getting 1/2"+ of travel at the fork. pushrod at the master cylinder is fully extended. the transmission has been pulled again and we've verified that all of the parts are for a 5 speed coupe. collar and pressure plate match. current theory is that the pushrod on the new slave cylinder is just too short. the mechanic has suggested using an adjustable slave and fork from a 240. has anyone tried mating a 240 fork to a 280 collar, bearing, and cl…
Last reply by Zed Head, -
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I am determined to learn how to remove the head. I have bought several books, including the "how to rebuild your datsun engine". However for fear of costing me more than it should, I am interested in a set of knowledgable eyes and hands. I am in the Carson, CA area. I am willing to pay what it would cost a mobile mechanic to do the job. Please quote me for the headgasket repair. I would like to learn the process at the same time. My garage is semi-equipped. I have a compressor, wrenches, sockets, a radio, TV and beer. We will be working inside the garage where it is shaded from the sun and the elements. I need a quote for instruction. Daniel '73 240z Hack Job
Last reply by olzed, -
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[ATTACH=CONFIG]68115[/ATTACH]I'm putting an ACT clutch and pressure plate into 81 5-speed transmission. Will this clutch bearing sleeve holder work? It's 2 inches total length. If anyone has any info, thank you very much, TimsZ
Last reply by timsz, -
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Is there any way to reinstall the tensioner without removing the front cover? I am asking this for a friend.....He is always getting into trouble with his car. I mean this friend is fearless. He will take apart anything if he has a manual. Doesn't care if some Brit wrote it....doesn't care about the fuzzy pictures.....I told him not to do it but he went ahead and tried to replace the cam on his own! But he is afraid of being embarrassed. So that is why I am writing this on his behalf. Anyway he was replacing the cam and had the chain wedge in place but somehow the tensioner fell out. It is just laying there. Is my friend screwed and need to pop the front cover o…
Last reply by siteunseen, -
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Hi guys, So I had to change out my timing chain and tensioner. The tensioner went bad and the chain stretched. I've gotten it all installed and am now to the point of installing the Oil Pump and Distributor, along with the Drive Spindle. The problem is, I can't seem to get the spindle to go in all the way, not even far enough to run the oil pump bolts. Shouldn't be that hard, I would think. The engine is in TDC, and I'm installing the spindle short side out, 5 degrees clockwise from the distributor bolt holes. It wasn't this hard to pull it, I know for sure. Any help could be greatly appreciated!
Last reply by Diseazd, -
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Correct me if I'm wrong I've been looking for a 81 to 83 transmission. A guy that gave me the serial number off the one he is saying is out of 83. The serial number is 7807108. I believe this is out of 1977, months of production August. Do you think I'm correct.
Last reply by Yellow78, -
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I was curious if anyone has used a 4 speed with 4.11 gears? Also what was their take on the set-up. Thanks
Last reply by 240260280z, -
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71 240z auto trans. This summer I installed all of the urethane bushing at the rear of the car. ALL of them. Since I had everything apart back there, I went ahead and dropped the differential so I could clean it up. I also replaced the diff fluid while it was out. It never leaked before i removed it. After I put everything back together I noticed it would leave a drop or two on the garage floor, but I didn't worry about it. Over the last few months the leak is slowly getting worse. Maybe 10+ drips now. I got under the car today to figure out where this leak is coming from. It looks like its coming from the top of the diff, definately higher up somewhere. It's just really …
Last reply by ajmcforester, -
- 10 replies
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Hey mates This evening my Z starting making an interesting whining noise. It goes up and down with engine speed and just seemed to appear though it could have been happening for a bit - I have a bit a loudish exhaust. It doens't matter if the clutch is depressed or not. Question I have is this, other then the alternator and waterpump is there anything mechancial that could make a whinning noise? I'm going to yank the belt of tomorrow and run it with the belt off and see if it's still there but would like your guys opinion. Thanks Jan
Last reply by txvepr, -
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Most likely a silly question, that I am over thinking. I am in the process of swapping a l28 into my 240. Before I mount the head, can anyone tell which valves would be open on the head. Block is currently sitting at 1 and 6 being up. Many thanks
Last reply by sirtimeless,
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