Engine & Drivetrain
Post messages here about engine mechanics, exhaust, intake, etc. Anything to do with the engine system as a whole.
5,568 topics in this forum
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ok, heres the deal....we had to pull the motor on my brothers 240 to install a new crank...while we had the motor and tranny out we decided to go ahead and put in the R180 diff he bought. we got everything back together and start the car, push in the clutch, put it in gear, let the clutch out and nothing! the car didnt move... so we think we mess something up with the clutch...we pulled the tranny again and everything checked out. so we reinstalled it....started the car put it in gear and nothing....oh i might add that while the motor is running we can easily put it in geasr with out the clutch..... Any ideas of what we skrewed up on??? help we are at our wits end! :mad: …
Last reply by Beerbrawler, -
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Quick question. I am planning on replacing the freeze plug(s) on the back of my engine tommorrow. That being the ones behind the transmission. One is leaking. Does anyone know what size they are and how many are back there?
Last reply by g72s20, -
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I finally found a place to rent a berry glaze breaker and I need some advice on the best way to use it. The Datsun Engine Rebuild book doesn't discuss this. My current thoughts are to use my Makita drill on its slower speed range (0-200 rpm). I understand I should go up and down in the bore to try to generate a cross hatching pattern. My question is roughly how long should this take (1 minute, 5 minutes, more?) for each cylinder? Should I use it dry, or have some engine oil on the bores? How careful do I need to be to not take too much material off? I realize this is mostly a function of the condition of my block, but I'd appreciate any advice in advance. This i…
Last reply by 240ZMan, -
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Hello all. I just bought a 75 280z 2+2 for a restore project. This is my first Z and first project. I originally had plans to buy a 240z with the same intent but decided to buy the best available car for the money. The car has been stored and covered for the last 15 years and is all original with only light surface rust on the hood and roof (appears the cover was not taken off to dry after rain). There is no rust on the body panels and the frame rails and floor pans are good. The interior is original and fairly decent with only cracks in dash and minor tears in seat bottoms. This is my question: Is the 2+2 model as popular as the 2 seater? I have not seen as many…
Last reply by beandip, -
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I got my car back! I finally got the new fuel rail on, the fuel lines plumbed, and after I put the spark plug wires on (in the right order), it started right up. Just no cold-start valve (it leaks), but I can give it a crank or two until it starts spouting gas, just enough to start, then unplug it so I can drive. New cold-start injector ordered. New fuel & vacuum hoses too. So I got it to the gas station (on fumes) and on the way there, I noticed that if I push the gas pedal all the way down, the engine stumbles (loaded or not). 1/2 or 3/4 down is fine with good power, but all the way down stumbles with a burbling sound(runs rough). Could it be the ignition timing…
Last reply by TomoHawk, -
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I had an interesting thing happen this morning. After getting my alignment yesterday I was going to take the Z out for a shakedown at the autocross track. My engine is fresh with about 2 hrs on it. I hit start button a little backfire and thats it.It wouldn't start. Thought it was flooded. Nope. Checked spark. OK Took valve cover off, got my wife to hit start button and to my perplexed eye's saw the cam sprocket spinning but not the cam. What the F#@*% I preceded to pull cam sprocket off. Is'nt there supposed to be a dowel of some sort? Pull the sprocket back a bit further and hear a clink clink as the missing dowel fell out of cam sprocked into oil pan. SH%T Here we go.…
Last reply by ctomkins, -
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DUMAS question #2 for today: For those who don't recognize these, they are the throttle linkage pin (one with the forked end) and the sleeve which are mounted within the two lobes on the intake manifold crossover tube. What I do not know is, it appears as though these two holes align when fitted. To secure the sleeves position (keep it from slipping) is a bolt passed through this hole? A pin with "C" or "E" clamp? Cotter pin? I am trying to restore the original linkage which is missing a few parts. I tried emailing ZTherapy for help on this but got no reply.
Last reply by george71z, -
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I posted this link in a forum reply, but I thought it deserved a thread of its own. Its a link to some very good OS GIKEN twin can info with photos from Datrats site. OS GIKEN Twin cam At the bottom of the page is also a link to a full PDF copy. Steven
Last reply by e_racer1999, -
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My "new" 73 has a 6 into 2 header and then runs into 2 glass packs not far back and then all the way out with 2 pipes. In the powerband it is quite loud. I just want to tone it down a bit. I have searched but can't find easy solution. Maybe another pair of glass packs at the back? ty sirs
Last reply by uhoh7, -
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Just got back from my friends house in jasper. we decided on a 3.1 litre for his 240 he doesnt have yet! argh! so jokingly, i say, "hey lets go to the Jasper Junkyard" to "find" a LD28 crank. yeah right. its jasper GA, like the smalled hickest city ever. So we get there, they are closed. but we *sneak* through the gate. we split up, and about 20 seconds later, i hear "HOLY SH*T" ran over, and there are FOUR, yes guys FOUR (4) Datsun Maximas, all diseal. I pop the hood on al 4 and yup. the whole engine is there. OMG!!!!! not to mention there was one non disel that i guess has the N47 maxima head... Next thing we know, a car drives up and yells, and we run back to t…
Last reply by thehelix112, -
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Anybody know what 'P30" means on a crankshaft?? what are the L24, L28, LD28 cranks desgnated with? Brett
Last reply by texasz, -
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Just bought a 73 240Z, original for the most part. During the first valve adjustment, we noticed much sludge and varnish when removing the valve cover. It suppposedly has 113k original miles. I'm sure it could use a rebuild, but in the mean time would and internal engine cleaner and or carbon flush help? Or hurt? Which brands are good? TY uhoh7
Last reply by hls30.com,
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