Engine & Drivetrain
Post messages here about engine mechanics, exhaust, intake, etc. Anything to do with the engine system as a whole.
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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, -
- 1 follower
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73' 240 Z with automatic. My ATF is very low and I don't see a leak. I don't know how the modulators are built. Is is possible for the vacuum line to the modulator to be sucking ATF into the engine ? And if so, could it dilute the break-in oil for the new engine ? I think it would just burn up in the cylinders, but not 100% sure.
Last reply by Stanley, -
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I pulled my engine out of my car already but now I want to pull the trans. Can I just pull it forward into the engine bay when it’s unbolted from the transmission mounts or do I also need to undo the propeller shaft bolts by the rear diff? Sent from my iPhone using Classic Zcar Club mobile
Last reply by Zed Head, -
- 2 followers
- 7 replies
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Way back almost before I can remember in my stupider days I took my 73 z with 40K miles to the local expert/racer to check valve clearances. I asked him to advance that timing gear a notch as I thought that the chain may have stretched. I think all that did was shift the power curve further up in the rpm range and contributed to my feeling like the car does not have enough low end torque? Then I added the larger motosport tubo exhaust pipe. Made the problem even worse?
Last reply by LeonV, -
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- 5 replies
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I already have the large 27mm bolt removed from the engine. The balancer has two threaded holes that are to be utilized when using a puller per the FSM. Unfortunately it does not state what size the holes are. An M6x1.0 bolt is too big and a M5x0.8 bolt is too small. I have spent about 20 minutes trying various bolts in my collection and so far no luck. Does anyone know what size the holes are? Thank you.
Last reply by Hardway, -
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Does this crude looking thing actually work at quietening down the R200 diff? Wondering if I should reinstall?
Last reply by grannyknot, -
- 3 followers
- 13 replies
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Someone on hybridZ from the UK mentioned a source for lash pads from a company I had not heard from before. They are Precision Shims from Australia precisionshims.com.au They have both flat bottom and recessed bottom (like stock) lash pads in any thickness. They have stock thicknesses in 0.5 mm steps, but will make you any thickness. They make shims as they call them for many many engines. They even have the size printed on the edge! Now the best part. Price. They are $9 AUS each for the flat bottom. For Canadians, this is fantastic, as the dollar is near par with Auzzie land. In fact I had about a 1% advantage in exchange rate on the day I bought some. US…
Last reply by 240260280, -
- 2 followers
- 8 replies
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Hi Guys, I have a HS30 (RHD) early Numbered 70's 240Z. I bought an awesome Z-story exhaust system including sports extractors. Unfortunately when i went to fit the extractors they hit up against the left hand side floor well, and also the end threads of the tension control rods. Z story have stated that they should fit, and i believe them. As far as i know the car is pretty original, but i do know that the car was once "restored" (badly).. before i go trying to get the exhaust modified to clear.. i was just wondering if there is anyway that my engine mounts are incorrect, or if there is any difference between the year models? I only ask because the top of t…
Last reply by 7tooZ,
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