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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- 3 replies
- 961 views
want to buy n 42 head ported and polished.
Last reply by Kurbycar32, -
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My R180 has 180K miles on it and has the developed the usual whine between 45-55 mph that changes pitch between driving and coasting. The manual says this is an indication of excessive runout between the pinion gear and drive gear. I have previously replaced the wheel bearings all round and have been impressed with the change in ride. When I first got the vehicle 18 months ago, the side seals showed evidence of leakage and one half shaft was installed backwards. After the mechanics replaced the forward differential mount, side seals and re-installed the half shafts, I noticed a clunk when shifting from driving to coasting and vice versa. The u-joints were okay but there…
Last reply by Zedyone_kenobi, -
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As some of you might recall, I built a new engine for my 240C coupe that was originally going to be turbo'ed. Since I put this car on the track, a change in direction to keep it NA kept me in a more appropriate class, so a new head was sourced. The P90 with 1mm oversized valves was taken off and replaced by a late model E88 from an injected 2.4E engine. With L28 valves and a CNC port job, 300 degree duration cam, 595 valve lift, 1000cfm 4 barrel throttle body, on a Clifford manifold, headers and a 3 inch exhaust running a stock 280zx dizzy, the engine did this today.......
Last reply by ozconnection, -
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REALLY stupid question: How do you keep the engine from turning to get the flywheel bolts out? Also the Pulley bolt. Block is out. steve77
Last reply by LeonV, -
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i recently bought a 1977 datsun 280z and everything checked out fine. ran it perfectly for about 3 days. i hopped on the free way for about 30 miles and just as i exited my cars rpm dropped to about 500 and stalled. before that i checked all hoses and replaced faulty ones. i am not sure what it could be?? can anyone point me in the right direction?
Last reply by 240260280z, -
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Hello Z community, So I'm working on replacing my clutch and I've disconnected everything from the transmission. The motor and the transmission are on separate jacks. I've tried lowering and raising both jacks, shaking and pulling and tapping with a hammer and block of wood, but the transmission won't budge. Any tips on how I can break this transmission free from the motor? Thanks, gtom
Last reply by 240260280z, -
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Hopefully someone will be able to help me out on this. I have a 78' Z with an 83 5spd trans. I'm having problems getting the clutch adjusted properly. It's either slipping or won't disengage. I can't seem to find that happy median. Something that might be causing it is, even with the clutch M/C rod adjusted all the way out, the pedal still isn't returning to the pedal stop. I looked in the service manual and confirmed that the pedal height should be greater than what it is. I installed a new Autozone M/C and clutch in the car and have read that the rods can be too short. So I pulled it back off and compared it to the M/C that was on the car, same length rod. Als…
Last reply by CG240Z, -
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Oil consumption has been a problem since acquiring my Series I in Aug 2012 (quart every 300 miles). After changing valve guide seals and other checks, I isolated the problem to a leak at the head gasket between #3 and #4 cylinders where the oil galley feeds the cylinder head. I changed the head gasket with a Felpro. I bought the gasket before opening the engine and discovered there was a Felpro gasket already installed. Flatness was within spec for both the block and head, so I preceded to install the new Felpro only to get the same leak at the same place. The Felpro gasket has thin bead of rubber on one side around the hole for the oil flow and apparently this is still …
Last reply by djwarner, -
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79 280zx engine in a 76 280z body So I have searched the internet, and replaced most of my engine trying to solve a problem I cant seem to fix, a problem others have a variation of. After a cold start, as part of the warm up systems, there is something that kicks in about 2 minutes after the car starts that is NOT the air regulator. Other people who have this problem it usually causes their car to die, or idle very low/poorly, it causes my car idles at about 2000 RPM. The problem is sudden, and takes about 20-30 seconds to take effect, but for others it is instant. Once my car is warm and has sat for about 20 minutes the problem goes away and it will idle correctly. Vacuu…
Last reply by Xenn, -
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Thanks to the fellows who replied to my earlier post on this topic. I'm probably getting a bit paranoid, but I'm still concerned about the movement on the cam gear. I just don't see how the single bolt properly centres the gear on the end of the camshaft. I found another camshaft bolt that is perhaps 2-3 thou. greater in shaft diameter than the first one, but there is still some side-to-side wiggle room. Perhaps only a mm. but nevertheless does having the gear turning in what is effectively an elliptical orbit present any increased wear to the chain and the guides? As for the oil-bar seal, we'll go with majority rules. I'll make gaskets. Curious though as to why t…
Last reply by Zed Head, -
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Two concerns regarding the 240Z head. First is the camshaft oil delivery bar. When I took it apart, there were gaskets between the bar and the mounting / oil-feed points. I have two engine gasket sets, and there are no gaskets for this in either set. I don't need them? Liquid gasket material is of course an option, but it's easy to see how a drop of the stuff could get into the passage. Suggestions? Second is the cam drive gear. I've set the dowel on on the right hole, and snugged up the bolt, but there is rotational play around the axis of the dowel pin. I would have thought the bolt would center the gear. I'm sure that once I torque the bolt, I won't be able to …
Last reply by Bonzi Lon, -
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I am replacing the belts on my 77 280z and noticed that the Alternator belt was loose but not squeaking and there was no more room on the adjustment bracket to tighten it up more. Can I use a shorter belt just as long as it is the same with ?
Last reply by Mark Maras,
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