Engine & Drivetrain
Post messages here about engine mechanics, exhaust, intake, etc. Anything to do with the engine system as a whole.
5,549 topics in this forum
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- 12 replies
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I have a 1975 280z project that I've been working on and there so many things that I need to do. But I guess I should prioritize things and do them in the sequence of most urgent. My radiator is leaking and I am considering upgrading to an Aluminum radiator. My question is, should I go this route or stick with the OEM style radiators? Also where should I consider buying an Aluminum radiator from? I can't seem too many vendors out there selling the aluminum radiator for a decent price. Thanks in advance.
Last reply by Tyrone, -
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- 2 replies
- 960 views
Hey Guys, My heater core blew and, as a temporary fix, I decided to bypass it entirely. It was an easy fix, just some new hose and clamps. After it was done, however, I took it for a spin to test it out and now the temp gauge doesn't work. I have no idea how the bypass could have caused this. I'm kind of grasping at straws but the only thing I could think of is either I got air in the cooling system and it messed with the sensor, or the rad full of coolant that emptied into my passenger side footwell shorted something. Any ideas? A little back story - I bought my 73 240 last year. It was in decent shape, definitely neglected for years but entirely complete and solid. Sin…
Last reply by stevef1972z, -
- 7 replies
- 5.8k views
Has anyone checked out this Earl's pro-lite 350 stuff for use in place of the stock cloth tubing? From some of the pics, the braid looks similar to the original. In a bit of a bind here with half of my hoses braided (40 years old) and half not. It looks off. They need to be one or the other. http://www.earls.co.uk/earls/hose/prolite.html
Last reply by mgmoreau, -
- 3 replies
- 1.2k views
Hi all, I have a transmission I pulled from a customers 72 240z that I have not seen before. Can anyone identify the one on the right? (The overhauled one on the left is going back in the car). Is it from a truck? Roadster? Thanks in advance. Anthony Q A&C Imports
Last reply by Carl Beck, -
core plugs
by mekjus- 6 replies
- 2.3k views
hey guys, for a L26 block what would be the correct size freeze plugs , 35mm or 40mm, and does anyone know who sells long tube headers for a good price for the L26
Last reply by Nigel1943, -
- 8 replies
- 1.9k views
I took my first stab at adjusting valve lash this weekend. I found that most of the valve's were about .002 too tight. Most of the exhaust were at .008 and most of the intake were at .006. I now have them adjusted to factory spec (.008 intake and .010 exhaust - cold). I still feel that something is "holding the car back" over 4,000 rpm's, and I'm curious what effect insufficient valve lash can have on performance? I did notice one other curious thing when I was taking out the plugs. The #4 plug was fouled, and all of the others were nice light brown, and clean. The valve lash at the #4 was just like the others, a little bit too tight. I've noticed this plug being f…
Last reply by Weasel73240Z, -
- 4 replies
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i was just going to take the tranny to AAMCO but they wanted 460 JUST IN LABOR! so that wasn't happening. i was reading a thread earlier and i believe that zbane mentioned a "needle bearing" that needs replacing. anyone have a part number or know how to do it? my symptoms (like someone else on this forum) include loud whining in first and second. it's less in third and fifth, and nonexistant in 4th. also, i thought my throwout bearing was bad because my tranny had a kind of rattling sound when the clutch was ENGAGED (pedal not depressed). but from what i read in another thread, the throwout bearing is the exact opposite. anyway, help? part number? schematics? wanna come d…
Last reply by sblake01, -
- 7 replies
- 2k views
Guys, Just took my '77Z on it's first long trip (400+ miles) since I bought it 4 years ago, and outside of a little oil pressure fluctuation it ran fine. I started it up this morning, put it into reverse and started to back out of the garage when I heard a loud whine and what sounded like a metal-rubbing-on-metal sound. I shifted into 1st and pulled it back into the garage. The sound ended when I shut the engine off. I went out again a couple of hours later to check it out and see where the noise was coming from. I got the following: --I heard the noise only when the drive train was cold --even when cold it doesn't happen all the time --with the engine idling and …
Last reply by Arne, -
- 8 replies
- 2.6k views
This is an issue with my '71 with an '83 L28 and '83 5 spd installed. I had a combination of issues happen while on the track at Road America. First, I think the fuel regulator started to go bad. I lost power and died. Had to get flat towed in. While diagnosing the no fuel problem, I got the car running again. Then when I was revving the engine, I started to get a real severe vibration through the stick shift. There was also a bad noise coming from the back of the engine. I could not tell if it was coming from the engine, the tranny or the clutch. The only thing that I could think of that could have hurt something was that I messed up a down shift and it revved pre…
Last reply by Bcalvosa, -
Still smokin 1 2 3
by Sailor Bob- 30 replies
- 3.8k views
Guys, I am looking for advise. I just got the 240 running after a few changes in an attempt to get her ruuning better and cleaner - the car was running after a fashion when I got it, but nothing that would live up to the Z reputation. It had a set of very troubled looking four screw SUs that had loose throttles, dipsticks from a 260 and a sticking choke, just a good case for replacing. I got a set of Carbs from ZTherapy along with a stripped down balance tube, set them up according to the book, installed new plugs and wires (NGK) and blanked any unused hookups for pollution gear. Pulled the choke and turned the key - it gave me a little fright, it started so aggressive…
Last reply by Sailor Bob, -
- 1 reply
- 2.5k views
hi, i am thinking about swaping a 350 small block carburator engine into my 76 280z. what do i need to do and what modification do i have to make and how much will it cost me than just getting anothe 280z engine and have it put into the car
Last reply by bigoak, -
- 10 replies
- 2.1k views
Just thought I would update on my zeds progress. I decided to install the shifter bushings I had ordered almost a year ago. Well, what I learned is its FAR easier to do this from inside the car, than underneath. So for anybody who is looking to do this, its a piece of cake. I found out that I was missing some compression washers on top of my rubber bushings, and thats why my shifter was spinning. So I fabricated some and now my shifter not only feels more 'gated' but it no longer spins!!!!
Last reply by sblake01,
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