Engine & Drivetrain
Post messages here about engine mechanics, exhaust, intake, etc. Anything to do with the engine system as a whole.
5,574 topics in this forum
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Hi All. So, i'm at the point where I'm putting serious consideration into my engine. I've got all the parts below already. JE forged pistons 35.0266 pin height, 0.6cc positive dome, valve cutouts 240+240 cranks ATI Damper Kameari oil pump/adjustable cam sprocket/chain tensioner-idler gear/ignition+Distributor Schneider 290F camshaft+valvesprings+Retainers to suit Fidenza alloy flywheel e31 head(needs valve seats etc) Worked head with big valves(need to work out what head as casing has been removed) oer 45mm carbs on an OER manifold New style Fujitsubo Other nice little bits to suit. Using the engine …
Last reply by Zed Head, -
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I am looking at replacing my stock harmonic balancer with a performance unit since the rubber ring in my original is cracking and crumbling. However, the Euro style balancer that MSA and ZCar Depot sells indicates it does not accept stock pulleys. The Professional Products balancer 428-90055 says it is similar to the original Euro balancer. At some I would like to add air conditioning to my 240z and want to make sure I invest in the right balancer. Is anyone running a performance balancer and AC in their Z car? If so, can you provide any details that you have? Thank you!
Last reply by Hardway, -
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Picked up a 77 280z that will be my winter project. PO told me that he had a "Slalom grind cam" installed. I have searched all the Z forums and the internet in general and can't find anything definitive on this cam. If anyone knows anything about it please let me know, benefits or not. Thanks
Last reply by dutchzcarguy, -
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Replacing the tired 260Z motor in my 71 with 280Z block and head. Will run mild cam, lightweight flywheel, keep the triple Weber 40s. Car street driven and probably some autocrossing. Would like increased compression. This good? 12/70 2.6 block E88 heads Mallory triple Weber 40s headers ext oil cooler Twice pipes Tokico Ilumina Eibach springs frnt/rear sways
Last reply by w3wilkes, -
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Howdy. My 'other' head. Its been worked, large valve seats(I measure 38/44). casting mark has been ground off. there's a machining stamp, 0.020, CC's measure about 42 with one small valve in, so nearer 40-41. Maths make it about 3.6cc removed, so N42? Looks right from pics of a stock one? Any thoughts? I was going to perform the same to my e31, however that can wait till the future.
Last reply by Jason240z, -
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I'm building a new engine. I'll use the L28 N42 block bored .040 over with an L24 crank and rods, L28 P79 flat-top pistons and a high quench P79 head shaved and shimmed .080 inches (should be 9.2 to 1 C/R). What this will be is a very over-bored L24 because I really like the higher revving L24's and bigger is always better.....right? Anyone build this motor before or heard of anyone else building it? I'll update as I build on.
Last reply by Patcon, -
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I looked into this upgrade, and all the information was aimed at the 240Z, which is great because it uses points. One article was for the upgrade on a 77, but the wiring on a '78 is different enough that I think it deserves its own writeup. The connection of the GM HEI module to the distributor seems fine, but what do you do with the ignition box inside the car? So, is there a writeup for the GM HEI module upgrade specifically for the 1978 280Z, using the stock 280Z distributor, not the ZX one? thxZ
Last reply by Chickenman, -
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Last reply by 240260280, -
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I want to restore the valve cover on my L28 engine to original stock condition. Somewhat difficult due to presence of cosmoline. In some places the aluminum beneath the cosmoline is shiny as it was when I purchased the Z-car new in January 1981 (Manufacure date 09-1980). I purchased Sharkhide aluminum cleaner, very expensive for a quart!! Tried it, a 3 parts water to one part Sharkhide ( rather strong) and it foamed-up per instructions on the valve cover side facing the fire wall but it didn’t do much. Does anyone have experience using this on valve covers or other engine aluminum parts that need to be cleaned (bell housing, alternator, stock intake manifo…
Last reply by Car54280ZX, -
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Dropped the tranny today in my '76 280z with a '77-'78 five speed. Originally I had thought the pressure plate was faulty after I replaced the master and slave cylinders and adjusting the clutch pedal. Upon further inspection, the clutch and pressure plate definitely weren't the culprit. Now I haven't scoured the web to see if anyone else has experienced this besides googling a few key words, but a few really experienced Z guys I know say they've never seen this. What do you think? My symptoms were just the car being harder and harder to put into gear over the course of a few days. As far as I know, the car was originally a California model although the tr…
Last reply by Zed Head, -
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Cant seem to find any label pointing of my differential is r180 o r200. My 1972 240z car has a 5 speed tranny from a 280z.
Last reply by wheee!, -
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I'm getting close to installing the head on the block and noticed that Felpro has changed their HG, they use to have the orange sealant going around all coolant and oil holes. I have always installed HG's on bare metal but now I'm wondering if I should follow Tom Monroe's advise and spray both sides of the HG with high temp aluminum paint. The mechanics down at Whitehead Performance use a very thin layer of Permatex Ultra Black on either side and swear by it. Anyone want to weigh in?
Last reply by cbuczesk,
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