Engine & Drivetrain
Post messages here about engine mechanics, exhaust, intake, etc. Anything to do with the engine system as a whole.
5,574 topics in this forum
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I was told by my engine builder, that they recommend using a 3" exhaust with thier header. Right now I'm running a 2 1/2 exhaust. Is there anyone who makes a pre-formed 3" exhaust for the 240Z? Or is this going to be custom. How much of a difference would 1/2 of an inch make in performance. Any recommendations on this would be great . I'm running a 3.0L F54 block, N42 head, bored SU's, cam with about .490 lift.
Last reply by kmack, -
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Can anyone out there give me a greenhorn to z,s,I would like to remove the airpump,and all emmision related garbage,Is this worth the trbl,anytype of input would be appericiated.Reason for this getting to basics engine 4 wheels..less crap less prblms.
Last reply by BlueZee, -
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I want an exhuast system that can flow very efficiant but i dont want it to be too loud. so i was thinking. since the larger pipe size makes it louder . than wouldn't rather than having one large pipe size. You have 2 smaller pipes be quieter. or it doesnt work that way? Correct me if im wrong about the ;ager pipe size being loader. not really sure about that.
Last reply by lordbiotree, -
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OK when I bought my Z a few months ago the Oil Pressure/H20 temp gauge was broken and the previous owner had a cheap set of guages installed on the center console. Well I bought a new (used) guage for the dash. Also the H20 Temp sending unit was gone and a bolt was stuck in the Thermostat housing in its place. I bought a new thermostat and housing and cover and I ordered the H20 sending unit along with the little bolt collar thing that holds it in. The original wire that connected the guage to the sending unit had been cut. The problem I am having is this, the end of the sending unit is shapped oddly, not threads to bolt on a connector, looks like something should b…
Last reply by Daniel, -
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im working on my first 71 240 z project car and i cant locate the timing marker(plate) that corresponds with the crank to set timing. one of the front cover bolts is missing, and it looks like this is where it would go-----if there is one on this car--------i imagine there would be. front to rear its on the left side. if there is does anyone know where i could buy one. please help. thank you . steve
Last reply by Bambikiller240, -
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for those of you who don't remember i'm working on a friends z for her. it sat for years so i got it running just to have a valve hang and get slapped sideways by the piston. so she asks me to go ahead and fix it. i pulled the head and replaced the valve, and concequently the guide as well. so i managed to get the head off and back on without dropping the chain. well let me back up. i really screwed up and just started disassembling the thing. didn't bother timing the engine or anything, just yarding stuff out. hey, i'm a SBC guy, give me a break. so when i reinstalled the head, i just got the sprocket back on the cam and rolled the #1 cylinder up to TDC. then …
Last reply by clutchdust, -
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Hey guys, just a small question I bought a 73 240z automatic a couple of weeks ago. Its in great condition and everything works fine except or two things. 1.) I was at the lights the other day. When I accelerated the engine nearly stalled and it took about 3 seconds before it ran properly. It then ran really rough for about another 6 seconds with the car surging occassionally and I heard the engine "pinging" 2.) On the highway at 100kmh the car tends to surge sometimes in a pulsing manner. The tacho doesn't show any noticeably rise or fall in rpm but you can feel it. I've booked it in to see a mechanic next weeks but any ideas would be great.
Last reply by aardvark, -
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I've been looking (for what seems like months now) on upgrading my 240's point distributor w/ an elect. one off of a ZX. Ok, I know I need an E12-80 module but someone sent me an offer and said theirs had an advance cam of 8.5...ok my Q is wtf is that? I've heard of advance curve, vacuum advance, advance/retard, cam lift, etc but never advance cam (i'm assuming 8.5 is degrees of something) Jus wonderin if someone could clue me in...also tell me what 'advance cam' I need for a bone stock '72 240 with good ol' SU's and a damn 3-sp slushbox. thanks in 'advance' AD
Last reply by sjcurtis, -
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I just got some twin weber DGV's (thanks to thefastestz) and a 6 to one header with a 2.5' exhaust. Does anyone use these carbs or a set up like this? I was just wondering some popular mods for these carbs and full exhaust. I did not really want to jump right into a cam, but it may be the next step. I was also wondering about the different 240z heads and what the difference was. Also if there are different intake manifolds. Anyway, just tell me what you think.
Last reply by redline240z, -
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ive been on a serious search for a timing marker and cant find one. they have been discontinued for years now and there are no more in stock. ive had nissan run parts locater searches in the u.s. , canada, and mexico. ive also scoured the local junk yards and called numerous z parts shops. its for a 1971 240z, but the single point marker was unchanged until late 1973. the single point or the one with the degrees marked on it is fine. if anyone has any ideas id be very grateful . thanks all. steve -----also does anyone know if the position degree of the single point marker would b…
Last reply by sawilliams, -
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Hi, does anybody know if an L28 head and block fit straight onto the orginal 240z engine mounts? Does it need a different intake manifold if i wanna keep carberators coz the L28 engine was injected. I've seen it done but am unsure. I thought it would be cheaper than a full port and polish. :tapemouth
Last reply by datto_240z, -
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I've got a 1976 280z w/ auto transmission Since I installed my upgraded throttle body (60mm 240sx), I've been having a problem. Sometimes the car "pops" a little bit, you can feel it very clearly in the gas pedal, and my girlfriend said she could feel it from the passenger side, too. It used to just happen once when you pressed the pedal hard from a stop, but now it seems to do it all the time under 30mph, even with the slightest acceleration. When it happens, the car lurches a little bit, and acceleration isn't even close to what it normally is. In addition, since this started happening, the car has also been stalling. The tach jumps up to 3500-4000, flutters around a li…
Last reply by jmead,
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