Engine & Drivetrain
Post messages here about engine mechanics, exhaust, intake, etc. Anything to do with the engine system as a whole.
5,552 topics in this forum
-
- 7 replies
- 7.3k views
I am still troubleshooting my fuel system. History in the following post... http://www.classiczcars.com/forums/showthread.php?t=37722 I have a clean tank, new filters and I blew down the fuel lines. The car runs great 95% of the time but now and again it tries to die when idling. I pulled the return line (after the restriction orifice) and ran it into a gas can. I get lots of fuel flow from the return line but it spits and pops like I would expect it to look if the gas was boiling in the line. I'm running out of things to test but I thought I would try to take the mechanical pump out of the equation in case a blockage in the pump is causing an intermittent problem. …
Last reply by steve91tt, -
-
- 3 replies
- 1.2k views
I was going to adjust the valves on my 70 240 I bought last year. As a matter of course I checked the compression at the same time. The first 5 cylinders were 185 to 187 psi at a warm to touch engine. Number 6 was 160+ and the plug was white. Number 6 is obviously running too hot. No oil in the water or water in the oil. I did a variation of a leak down test and air came out number 4 plug hole. It doesn't appear to be a head gasket (or at least the typical failure), but I am not sure what it is. The valves did not seem really screwed up. Anyone have any ideas? I would really appreciate it.
Last reply by Z-Luke, -
- 6 replies
- 1.8k views
I have a L28 from a 83 280ZX for my 240Z. I have triple 45 from Top End Performance with TWM airbox and 3-2 headers in 2" with 3" exhaust in stainless steel. The head is N42 and will be ported to fit in/ out. I am not a " motorhead " and I have read a lot about this but will also try to ask for some advice. My goal with this engine is good power also with low rpm - and the questione is what type of camshaft and spec should I go for. I feel that I am lost in a "technical" jungel with this cam issue:stupid: This car will only be a street car. Thank you for your time rab
Last reply by ra240z, -
- 7 replies
- 2.8k views
Hi guys, I recently tried to move my 260 that had been sitting for quite some time in the garage. Turns out I have no clutch pressure and the car won't budge. The master isn't leaking so I'm thinking that the diaphragm in the slave has gone. The real question I have is why the rear wheels won't budge. I jacked up the car and beat on the drums for a bit, thinking maybe the shoes had stuck themselves to the drum. That didn't fix anything. I also thought that maybe the wheel cylinder had gone on one side as I had to replace one side quite a while ago and didn't opt to replace both at the same time. I've heard this will sometimes cause the opposing side to go on older …
Last reply by Zs-ondabrain, -
- 4 replies
- 1.5k views
I just finished setting valve lash on my car's L28 today. I followed the FSM spec, 0.007 intake and 0.010 exhaust, set with engine cold. Took me several re-checks to finally get all 12 valves to be happy, I'd set them and rotate the cam back around (using the crank bolt) to recheck and a couple would be loose or tight so I'd have to set them again. Here are some questions I came up with. 1) almost all of the 17mm set nuts felt ridiculously overtightened when I first broke them loose, took my whole body weight and in a couple cases I even had to use a cheater pipe on the wrench. The other engines I've set valve lash on all used the same "one hand tight" spec on the set…
Last reply by dclamm, -
- 11 replies
- 3k views
I am trying to get a better feel in my shifter. I have pulled my center console to try to clean it up and maybe put some paint on it and refresh the chrome strip with a sharpie as has been documented. What I was wondering is if there is a harder rubber alternative to the stock rubber shifter bushings? I would like to make the shifter feel a bit more solid. I have looked at some of the usual Z parts places and with no luck. Does anybody make a kit for this? Thanks
Last reply by Zedyone_kenobi, -
- 3 replies
- 1.2k views
just installed new flywheel,clutch,pressure plate, release bearing, When i let up the cluch im getting a bouncing and tremble in the car,like it viberates instead of a smooth shift, anybody know why this is happening?
Last reply by iscopa, -
- 9 replies
- 1.7k views
I am not very familiar yet with older cars and I know that for newer one's you can just turbo or supercharge the car for a major power increase, but what kinds of things can you do for a 72 240z with a in-line 6 cylinder engine?
Last reply by Prest's Zcar, -
- 8 replies
- 1.5k views
This part hit the ground when I was pulling my motor and tranny last year. The motor and tranny are going back in tomorrow and, as usual, I am scrambling to figure out where it goes. I have already lined it up with tranny mount and that's not it. Thanks in advance. John
Last reply by JohnnyO, -
- 7 replies
- 2.8k views
Does anyone know if that transmission calculator still exists? The link I had for it is dead. A search around here did not turn up a new one. thanks, Marty
Last reply by 70 Cam Guy, -
- 1 reply
- 1.4k views
I'm starting to put together my old Z that has off the road for 24 years (it was run one day a year for 24 years). I'm going to replace the fuel pump and need some advice. The car has a triple Weber setup. I don't think I need a hi volume vane pump and would like a quiet impulse type pump. The mechanical fuel pump has been removed. any suggestions will be appreciated.
Last reply by ChrisZ, -
- 3 replies
- 1.3k views
Any ideas? I know its not common..
Last reply by WingZr0,
-
Recently Browsing 0 members
- No registered users viewing this page.