Engine & Drivetrain

5,574 topics in this forum

1. 

   heater hose replacement

   July 17, 2002 by 1 tuff z

   • 1 reply
   • 1.5k views

   anyone ever replaced the heater hoses [from the heater core to the engine] and not used the factory stuff. i wanted to get see if someone has already done this and the install works well and looks clean. figured the original [nearly 30 years old] hoses are due.

   

   Last reply by hmsports, July 17, 2002
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3. 

   stuttering at low rpm

   July 16, 2002 by Si|v3r72

   • 2 replies
   • 1.5k views

   Guys lately (well really since my last carb tune), my 240 is stuttering at low throttle, like the fuel delivery is not there or I'm missing. But as soon as I step on it or if I'm traveling at higher rpm's, it's as smooth as silk. Any guesses as to what's wrong?

   

   Last reply by Si|v3r72, July 17, 2002
4. 

   Doesn't pull thru entire rpm range 1 2

   May 10, 2002 by 59ghia

   • 13 replies
   • 2.2k views

   Hello fellow Zer's Here's the scoop, stock 72, my baby pulls really well up to 4500 rpm then starts feeling "unbalanced" and does'nt pull as well. Seems it should be smooth up till redline or close to it. The carbs have been rebuilt, and are sync'ed spot on. timing is on, valves adjusted etc. Compression is alittle low (150 psi) but even between all 6. Car sat for 5 years before I got her, so I'm think'in maybey the valve springs have weakened? Here's another possible problem- whats the total advance of this distributor? I'm getting about 10 degrees when i rap the throttle, is this enough? Any ideas? Thanks Dave

   

   Last reply by Phred, July 16, 2002
5. 

   Cam Color

   July 16, 2002 by Chris

   • 10 replies
   • 2.5k views

   I've just pulled the valve cover off my Z, and noticed that the lobes on my Engine are slightly different colors. Some are very shiny, while others are dull. Below are a couple of picture? And I to guess that the valves are out of adjustment. Some always touching the lobes, while some do not? -- Chris

   

   Last reply by Phred, July 16, 2002
6. 

   Never ending saga

   July 11, 2002 by Akir-ra

   • 0 replies
   • 1.7k views

   Ok..Thanks to 2MANYZs and Carguyinok I have a better understanding of what I have already and what is possible.. Having said that I think I'm ready to ask intelligent questions... I have a 74 260 N42 block bored .020(I think)w/Turbo flywheel, SU carbs, E88 intake, N42 head, dished pistons. I would like to raise the compression to about 10:1(I'm told anything higher requires special gasoline ) and reach Hp/Torque levels of about 200. I am looking to keep this a daily driver with good response from about 2500-6000 rpm. I'm not trying to make a racer,yet, but just a good off-the-line arse-spanker:devious: Now..I've been advised be some to seek a P90 head and flat-top piston…

   

   Last reply by Akir-ra, July 11, 2002
7. 

   Block Color

   July 10, 2002 by Ed

   • 2 replies
   • 1.5k views

   What is the original block color of the 240?

   

   Last reply by carguyinok, July 10, 2002
8. 

   The story continues..

   July 9, 2002 by Akir-ra

   • 1 reply
   • 1.5k views

   If I do in fact as I suspect have an N42 block and an N42 head..Can I replace the dished pistons with flattops..? I've been told that if I do it will raise my compression and therefore give me more power..I currently own a 74 260 with an obviously later year l28. The engine has been bored out .020, I think (The former owner wasn't sure how much)and I'm dseperatley seeking more torque..I also believe that I have a second stage cam, SU carbs, and a turbo flywheel. I have no idea how much torque or Hp I currently have but my goal is 200-220 hp..Any ideas..? Thanks in advance

   

   Last reply by 2ManyZs, July 9, 2002
9. 

   N42 head???

   June 14, 2002 by guy_geo

   • 9 replies
   • 2.9k views

   Go see the link: http://www.geocities.com/bern_on_yahoo/TheHead.html Does that fit on my engine (1972, 2,4) ?????

   

   Last reply by Akir-ra, July 9, 2002
10. 

    Will This Flywheel And Clutch Kit Fit My Z?

    July 8, 2002 by 71datsun240z

    • 1 reply
    • 1.3k views

    New Nissan COMP clutch disc with new Mueller 225mm 7.5lb racing flywheel for L16-18 $450 THATS THE KIT FOR BOTH OF THE, LET ME KNOW GUYS THNX I HAVE A L24 71240Z ENGINE.

    

    Last reply by 2ManyZs, July 8, 2002
11. 

    Swapping a SR20DET in a ZED???

    July 3, 2002 by guy_geo

    • 4 replies
    • 1.3k views

    Is it crazy to do that? How complicated? Any opinions? Since I have to rebuilt my engine, just wondering, yes, I will denaturate the soul of my ZED, but it's a good kick in the butt!!!:devious:

    

    Last reply by carguyinok, July 4, 2002
12. 

    Heat Shield ????

    December 28, 2001 by Stryker

    • 6 replies
    • 2.1k views

    where can you get a heat sheild for inbetween the headers and the intake for a 1973 240z. Or is it easy to make?

    

    Last reply by carguyinok, June 30, 2002
13. 

    Basic Engine Upgrades--Jet size?

    June 25, 2002 by santamaus

    • 0 replies
    • 1.3k views

    Heya--I've got a L26 that I'm putting fresh air filters (K&N) and a freer flowing pipe on. I may put a new cam in it in the near future, but that can wait. As long as I have the carbs off, should I be increasing the main jet size? As for parts, should I shop further than what's in the Motorsport catalog? How is the 17033 cam in there? The springs? I've heard that Crane is good? What about the Taylor spark plug wires? I already have an upgraded distributor--a high perf coil worth going to with the wires? I read the thread about power drop off at higher rpm--I think this is probably a gas flow problem (I think there's a baffle loose in the muffler), as the rest o…

    

    Last reply by santamaus, June 25, 2002