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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- 25 replies
- 4.2k views
Well today I took the thermostat out and backflushed the radiator and the block and left the thermostat out because it was overheating, after I had done that car was running too cool, where does your guys gauge get up to when you are running the car at night, mine gets like a fourth of an inch before the middle of the gauge, is this good for the car to run this cool or is it only because I was running it at night, during the day (90 degree weather) it takes a while to get there but it goes to the middle, and should I put a thermostat back in it. I tested the coolant and water mixture with a tester and it is fine it is even below the line to where it is suppose to be. I …
Last reply by oranngetang, -
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PCV Valve hose 1 2
by grantf- 16 replies
- 4.7k views
Has anyone seen a hose that looks like this? Nothing really holding it together I could just pull it apart with two fingers. Another P.O.'s hack? and why have I missed this for so long. Could this be giving me a massive vacuum leak? Oil leak?
Last reply by 240260280z, -
- 1 follower
- 3 replies
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i have the mikuni 40phh (got em from a friend for cheap) and was worried about my l28 running out of breath in the upper rev range. does the size of the venturi move the power band upwards and if so where may i buy replacement 34mm venturi's instead of my puny 32's
Last reply by John Coffey, -
- 13 replies
- 7.6k views
I went to check the timing on my '70 240z (all stock ignition) because it starts and idles fine, but stumbles under acceleration and completely breaks up over 4500 rpm. The timing notches on the pulley are over an inch below the pointer. I moved the distributor all the way in both directions, but could not get the nearest mark any closer than about an inch from the pointer (but could move it further away). Any thoughts? I've searched the forums, and there is a lot about timing, but I didn't see this particular issue. Any thoughts?
Last reply by Jeff G 78, -
- 3 replies
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Hey Ya'll!! i just subscribed. One of my main reasons for this is because I'm new to the Z scene and am currently working on putting my original engine back in after rebuilding it. I would like to keep the block in the original shell. I thought of putting an L28 in it for power and i do have one,but decided to keep the L24 and make a what i think is a major mod. I thought of using that L28 crank and boring the engine head because of how much the pistons stick out. wondering how much compression i would get. Anyone ever done this before or herd of anyone doing this? I'm afraid of getting too much compression :stupid: p.s. I'm using the original 1973 E88.
Last reply by sblake01, -
- 7 replies
- 1.2k views
So today was maintenance day on my Z. It has been running a little sluggish. My first job was to replace the fram 3G filter located near the tank. I think this was the main culprit. Also the car has been running hot. My thought was that since so much of the EFI system relies on temp reading I would do some maintenance on the cooling system. It has never been flushed since I have owned the car. Flushing whent smooth, nothing unexpected. I also inspected the thermostat and to my surprise someone in the past had installed it upside down! On to the oil change: This was easy as usual, except I noted that the oil filter was not tight, causing a small oil leak. (no one to blame…
Last reply by grantf, -
- 6 replies
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My 240z is having a bad week, i have to really wank the shifter to get it on reverse, it has original tranny. Is there anything i can do about it or is it going broken all the way? When it engages, it reverses as usual. It takes around 30 secs to minute to engage it. I do have 5 speed on the way here, but it takes at least 4 more weeks.
Last reply by 240260280z, -
- 4 replies
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Hi everyone, I need some help with determining the correct oil pan. I pulled the oil pan off the engine from my car which was built in 69. It has been repaired on some point so I thought I would pull the pan off my spare engine and use it instead. The engine is from a late 1970 car. After two hours of hoisting the engine and putting it on a stand, and removing the oil pan I discovered it was completely different. Did the early cars have different oil pans? Can I use the newer one? The picture of oil pans from Z Car Source look just like the one from the newer engine. Maybe it doesn't even matter. Thanks for your help. Carl
Last reply by JonnyRock, -
- 5 replies
- 1k views
Hi all. I've used the search function;) Bits below are what i've collected so are fixed(ish). I'm 100% going to use the original block in my car(09/1970). 4.44 subaru plated LSD Nisaan 200sx gearbox(C type) with shortshift Mallory unilite with hyfire ignition-cdi 40mm webbers Performance damper Piper 286 cam, 290 duration, I can't remember the full specs off hand but can dig them out. A set of 240z +1mm pistons new rockers etc I've got a 280zx engine in bits(f54 flat top/p90 head), exhaust will be a 6-2-1 with 1 5/8" primaries. I want a slightly 'cammy' engine, thats why i've gone for the cam and 40mm carbs to work with it. 150-160bhp at the wheels would be nice. What …
Last reply by Jason240z, -
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- 11 replies
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There are two openings, one over the other I think, in the firewall between the heater connections and a relay. Which openings is for the choke cables? I haven't been able to find a clear photo of the firewall that the shows the choke cables and firewall grommet. Thanks, Fixitman
Last reply by 240260280z, -
- 5 replies
- 2.8k views
Somewhere on the web there is a list of all the best possible combinations for blocks, heads, pistons etc from different years of Zs. I know I've seen it and I thought I bookmarked it but now I can't find it. Anyone know of the chart I'm talking about? Thanks, Chris
Last reply by grannyknot, -
- 2 replies
- 1.7k views
Does anyone know where to get a new fuel filler tee from, its the tee that attaches to the filler neck, couldn't see any at MSA or Black dragon.
Last reply by jfa.series1,
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