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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- 4 replies
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I've got a F54 that is ready to put back together. I had the opportunity to weigh the piston/rods the other day and decided, why not. I weighed the piston, rod, cap, bearings & bolts as an assembly. The heaviest was 2 lbs 14.15 oz. and the lightest was 2lbs 13.95 oz. is this difference big enough to have the engine balanced. I was just going to put it all together and not give balancing a second thought but after seeing this?????? What do you guys think? I'm not planning anything drastic with this engine 6k rev limit N/A. Street use. Should I get it balanced?
Last reply by Mudge, -
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I have replaced my standard aircleaner with after market sports ones and as a result I can no longer attach the breather pipe from the valve cover to the cleaner. I have seen pics of engines with a small K & N type filter on the valver cover and was wondering if this is ok. When doing a search on the subject, there seems to be differing opinions on how effective/appropriate these are as compared to a seperate catchment tank or just leaving the breather pipe open. Any advise would be appreciated. Thanks, Geoff
Last reply by Ben, -
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I need to block off the smog fittings on the header that i just bought. they are threaded but i do not know the thread size - does anybody know the thread size? Or is there another way to block them off. - Jeff
Last reply by JEFF, -
stroker kit 1 2
by Tellie- 13 replies
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hi im just wondering if anybody knows of a stroker kit for an L26..... cause i want to get as much torque as i can so if i could get a stroker it would be good...... and what head would be best for???? i was told to get an L28 cam cause it is hydrolic and would be better than the L26 cam. any help would be appreciated. cheers tellie
Last reply by Tellie, -
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I have a 1973 240Z with standard 240Z engine, apart from fairly new English SUs. The problem is that when the fuel tank is filled up, there are a variety of running problems (flat spots, stalling, running rich) which disappear as the fuel tank runs down - on a 1/4 of a tank it runs beautifully. Checked out the SUs and they are OK - fuel seems to have trouble reaching the engine from the carbies when full. The engine has a mechanical fuel pump but not an electric one. Any suggestions, anyone? Thanks!
Last reply by 260z, -
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hey all, I am looking for anyone who has taken the stock L24 and modded or warmed it over to gain the most out of this engine. My motor is still strong and the SU's are dead solid. I have a header and a 5spd, I do however have some valve train noise. So, I am pondering a rebuild, but I want to do a tried and true mod. So any of you guys with the L24 done up nice and runing daily with no issues please give me your Blue PRints I will return them...... eventually!
Last reply by Zsled, -
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for some reason im not getting enough fuel pressure to rev the car as it should rev, yesterday my car ran good and today its running so lean to where itll barely run, im hoping its just a fuel filter possibly? do 240z fuel pumps just die out like this? i put the motor back together and cleaned up the fuel pump and it had a good vaccum, im gonna buy a new fuel filter tommorow but i just wanted to hear someone elses opinon, thanks.
Last reply by dero, -
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I don't know if this is the correct forum to ask these questions but here goes. Someone just told me that the pictured diagram on the top of the air filter cannister is wrong at least on the 71 Z. The actual Idle adjustment is the larger screw on top of the throttle linkage and the two screws one on each su are airblead screws. Those ar the two screws I believe that are closest to the Carbs. The larger screw on top is labeled fast idle adjustment. The next question is this. The idle doesn't seem to want to come down at a stop. It conyinues up there at around 1500-2000 rpms. Is this due to the valve or some vaccum hose near the front carb. Initially I thought it was a st…
Last reply by cardogman1, -
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Has anyone ever heard of mistreating an engine (e.g. up over redline) and shooting the oil out the dipstick holder? Thanks,
Last reply by 2ManyZs, -
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I want to put a fresh engine gasket set on my L20b in a 1970 Fairlady Z. I know the bore is smaller, but how about the block height? If it is the same height as the L24 then I should be ok on the front cover gasket. Anyone with an L20 engine ever put new gaskets on? Is there actually an L20 gasket set available?
Last reply by Bleach, -
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i'm still working on my friends '72. i finally got it running the other day. i did a C/R check because #6 seemed to be weak and found the valve adjustments were all scattered to hell. i readjusted the valves per my haynes manual: .008"/intake and .010"/exhaust, cold as measured between the cam lobe and rocker. this is the way i read it in the book. the problem i'm experiencing now is that i continue to have rocker arms jumping out of the valve guide (what do you call that little cup with rails the rocker rides on?). so after i adjusted the valves intially last week, i got it running and it sounded pretty good. i had to move it and it sat for a week over christmas w…
Last reply by Zedrally, -
Which Oil? 1 2
by Ed- 17 replies
- 3k views
How do you decide what viscosity of oil to use? I'm talking about 10-30 vs 20-50. We know that new engines have closer tolerances in the bearings requiring thinner oil ie.. 5-30 or 10-30. But at what point would you use a thicker oil, 0.001-0.002 or more? Lets assume we are operating at moderate temperatures and driving around town.
Last reply by CoastGuardZ,
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