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, I just got Xenon Timing Light to measure ignition timing. When I look at pulley timing mark, I can't tell which side is zero since it's different from 280z timing Is top one the zero or the bottom one in the picture? When I look at FSM for '72 240z said "The top dead center is located extreme left as viewed from inspectors side." Thanks for the help, tamo3
Last reply by Jarvo2, -
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What clutch would you recommend? Centerforce, ClutchMaster, ACT, ???? I am leaning toward the Centerforce Stage 1. I want it to grip more than stock, but not be tough to drive. It will be used solely on the street, but it does have a somewhat built motor....
Last reply by 73 240Z Man, -
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Developed a exhaust leak, of course when miles away from home. Drove a few short trips that way, before deciding it was time to fix it. Took the intake & exhaust off today, and there is evidence on the head of an exhaust leak on #6. Funny, it exactly matches a hairline crack in the same place on the manifold... None of the bolts seemed under/over tightend, so that's not what did it. My buddy has a scope, and I'm going to try to check condition of the valve. I'm really hoping it's not burned. If so, the head has to come off too. I have a spare manifold and bought gaskets, but need to check the manifold for flatness. If everything's OK, I'll put her back…
Last reply by Oiluj, -
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Hi Everyone... I've been trying to figure out what to do with the current motor in my Z.. I currently have the original stock motor, hooked up to a newer 5sp connected to the original stock differential.. The choices that I've narrowed my list down to are... A) Rebuild the stock 2.4L motor.. Swap in a lightly messaged 2.8L motor.. C) Build a 3.1 Stroker.. The car is my Summer week-end driver... No auto-crossing, or track racing.. Just a summer night, week-end cruiser.. I'm looking for some more pep, torque and power.. I kinda ruled out the 2.4 rebuild..Since I'm going on the bigger is better adage.. That leaves me with either a 2.8L swap, or the 3.1 build.. I'd l…
Last reply by Diseazd, -
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now before yall say anything, i'll tell you that i didn't think to search the forums for reviews of this guy before i bought from him. hindsight is 20/20, but i may not be screwed yet. the head just got here today. it's an N42, and by sight, it looks really good. there are one or two chinks here and there; one on the edge of a lobe, another on the edge of one of the exhaust ports. but overall, it looks good. it's got the double springs. my question is this: who has bought a head from this guy, and if you had problems with it, what were they? i'm going to have it checked out by the shop i go to, and i'd like to have something to tell them to look for.
Last reply by Arne, -
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I got the 71 240z with a five speed upgrade...when i hit about 65mph in 5th gear iam getting this vibration thats deep and loud...so far we did,,new u joint and rebalanced the driveshaft...new halfshaft u joints..wheel bearings were done last year by PO...Has anyone seen this before? whats next is the rear...Any ideas/HELP....thank you
Last reply by ZohanIsBack, -
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Two feckless turds in a row now have hosed me on back to back P90 cams at Hybrid Z and my patience is wearing thin. My motor build ( http://www.classiczcars.com/forums/thread46890.html ) has been set back 4 weeks from actually enjoying my car because of all of this. A couple guys over at hybrid suggested running an internally oiled "A" cam from a 77-81 N/A motor (Think I got my dates right). I know there are not a lot of turbo folks over here but any help would be great. I could pull my cam out of my old motor, towers and all and let it rip. Doug at Awesome Z said he has some cams too. I don't know:ermm: I do know I have been banged out of nearly $300 in either jun…
Last reply by Ben's Z, -
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Rebuilding an L28 and that last main cap (the one with the rear main seal) is giving me grief. It's near impossible to tap it in with a mallet and it always ends up moving in its register. I resorted to using old head bolts threaded into the block as guides to get it reasonably straight, but when I finally got it installed it wasn't quite flush with the block and of course, the was crank seized completely. I'm hesitant to remove any material from the cap because of the side oil seals. Any ideas? Thanks.
Last reply by Hype, -
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My Z's engine has been recently rebuilt and after the break in oil was replaced, synthetic oil was chosen. My question: Under average use, how often should I change the synthetic oil? Thanks
Last reply by ta240, -
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I have searched the threads on this subject but still have two questions. The exhaust manifold is from a 240Z. Are the six holes in the exhaust manifold for the smog rail able to be plugged by a 1/4 inch BSPT (British Standard Pipe Tapered) plugs? Should the plug material be steel or brass and is there an advantage to using a regular hex head over an internal hex head (allen wrench to remove it)? McMaster-Carr has many choices and these things are not cheap! Thanks so much, Gary
Last reply by ggunder, -
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Is 145-150 psi on a compression test gauge normal for an engine with 119,xxx miles on it?
Last reply by 71Nissan240Z, -
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I bought a used (15,000 Km) performance L28 a while back and just got the cam specification card. I was told it was a "hot" cam, can you guys confirm that? It is not a Crane cam but a Nissan one that was reground to Crane specs by a good shop. Thanks
Last reply by 240260280z,
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