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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

  1. ea6driver

    Crankcase to PCV Valve Hose 1 2

    by ea6driver

    Was this hose originally painted from the factory? I removed this hose recently as part of an overall engine "clean up" project and noticed that it appeared to have been painted a silver color. Well, thinking that it must have been painted that way by a prior owner, I dutifully removed all the paint with a solvent. Then, while perusing numerous L28 engine photos posted online, I found several that displayed this hose seemingly painted a "silvery" color... Just wondering if it was originally painted from the factory (and why). Thoughts? Also...it appears to be somewhat "clogged up" with "gunk"....how would you recommend a thorough cleaning of it?

    ea6driver
    Last reply by ea6driver,
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  3. Mixelplix

    Diagnosing Valve Train Noise 1 2 3

    by Mixelplix

    While slowly reconditioning my early 74 260z, I decided to do a valve lash adjustment. After I was done I was able to notice a significant valve train noise somewhere around cylinder 5 or 6. The noise is sharp and follows the RPM. It's the same hot or cold. With a stethoscope it appears to be more loud on the passenger side. It makes the noise regardless if the spark plug wire is plugged in or not. I've triple checked the lash both hot and cold. And they're extremely close to perfect at .008 intake / .010 (cold) and .10 intake / .012 (hot). My oiling bar is recently cleaned and silver soldered by me, and I visually verified that it is working (what a mess). I believe…

    Zed Head
    Last reply by Zed Head,
    • Haha
  4. zdude1967

    HELP PLEASE!!!Need to find TDC with no regular indicators 1 2

    by zdude1967

    Here is the situation: Engine was rebuilt the cam timing chain gear is not the standard with the notch, the car doesn't have a timing tab and the dizzy has been set wrong so how do I find TDC with tis situation. Can I remove the valve cover, rotate the engine by hand until I get one of the pistons to the top of its stroke. Then rotate that one through its 4 cycle stroke until i find the pattern of intake opening at the top of the cylinders stroke, closing until exhaust valve opens coming up exhaust stroke and find the 1,53,6,2,4 pattern of this then rotate the engine through to go back to # 1 and set it at TDC. I may not be explaining this clearly but I would be happy t…

    zdude1967
    Last reply by zdude1967,
    • Haha
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  5. jalexquijano

    240z overheating at idle in traffic lights and intersections 1 2 3 4 12

    by jalexquijano

    Okay, finally decided to pick up my1972 240z from the mechanic. Charged me US$160 for changing the fan clutch, thermostat, wrapping heat shield cloth on the fuel lines and replacing wáter pump. He also changed the exhaust manifold pipe gasket. Car timing was set at 10BTDC. Car ran fine. No backfire either from intake or exhaust. However, once i reached home while playing with the car stereo temperature started to rise until reached 3/4. RPM dropped from 1000 to 500 and then raised to 1000 again. A few seconds later it stalled and i had to crank it again. It does the same at intersections and while at idle on traffic lights. Took out all plugs and cleaned them. I guess i w…

    jalexquijano
    Last reply by jalexquijano,
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  6. Civilizedape

    5 speed worn bushing prevents reverse? 1 2

    by Civilizedape

    I have 5 speed transmission that is giving me trouble. After a rebuild it is really hard to get into reverse and if it does its gets stuck there. After taking it apart and putting it back together a couple times I noticed a lot of play in the shift linkage. Has anyone dealt with this? I assume next step is get a new bushing pushed in.

    Civilizedape
    Last reply by Civilizedape,
    • Thanks
  7. rem1313

    Camshaft locating plate

    by rem1313

    First post. So, I just pulled my head to begin major cylinder head and engine overhaul on my 165k 1973 240z, and found that the cam locating plate was broken in half. Car was running fine but very low compression across the board that motivated the rebuild. I'm unable to find a replacement. Checked with Courtesy Nissan and does not seem to be available or local dealers. Does anyone know of a source for this piece? Thanks for any advice or suggestions.

    rem1313
    Last reply by rem1313,
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  8. One Way

    Beck-Arnley clutch hydraulic parts-78 280Z

    by One Way

    Looking for experienced opinions if the Beck-Arnley hydraulic clutch parts-slave, master, hose-are worth the extra money compared to the store brand options. Quality control seems to be a bit slack on some of the chain store branded parts. First hand experience being an assistant manager at one of them. I do not have any previous experience with the Beck-Arnley parts but have seen the name out there with generally higher prices. Just continuing the resurrection project and getting the various systems parts purchased in advance for the project. Thanks, John-Lugoff, SC.

    One Way
    Last reply by One Way,
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  9. Blitzed

    R200 Comparison 1 2

    by Blitzed

    Hi All, Happy 2020! Recently acquired two Datsun R200 diffs. I'm a novice with Z the drive train configs so bear with me. The diffs are the same gear ratio. One has the input yoke listed below as DAT 110 and half shaft flanges on each side. The other has the input yoke listed as DAT 110 300ZX with no half shaft flanges. Both are round input yokes, one smaller than the other. In addition to the yoke comparison below, how can I determine which Z these diff's came from, Z31 or Z32. Serial numbers ? If the assumption (based on the image below) one is from a 280ZX and the other is from a 300ZX, is one diff preferred or better over the other? Reason I…

    Blitzed
    Last reply by Blitzed,
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  10. jackmau

    Water Pump Bolt Washers 1 2

    by jackmau

    Could someone tell me what type washers go with the (2) 6mm short bolts,6mm long bolt and (2) 8mm bolts. Lock,flat,or both. Thanks.

    jackmau
    Last reply by jackmau,
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  11. Gizmohawk

    240z differential

    by Gizmohawk

    I currently have the stock 240z differential and I was looking to swap it for a z31 differential. Just wanted to ask you guys some questions. 1) would it be easier to rebuild current differential ninstead of swapping? 2) if I should proceed with swap what else would I need to modify or buy to install it, along side a 5 speed u currently have

    Gizmohawk
    Last reply by Gizmohawk,
  12. tigertacos

    Valve spring replacement

    by tigertacos

    I'm about to do a partial rebuild of my E88 260z and I was wondering what is your stance on replacing valve springs if the engine is internally stock well maintained. I already plan on doing a full disassembly and inspection to the head components, but should I plan on replacing the valve springs as a matter of preventative maintenance or not? Thanks

    Yarb
    Last reply by Yarb,
    • Like
  13. zdude1967

    Timing chain set up incorrectly???? 1 2

    by zdude1967

    I had my engine rebuilt about 7 years ago. Since then I have to adjust (move ) the dist. all the way to the drivers side to make it run correctly. In the middle of the adjustment range it runs like sh*t.Some back history - the timing tab may not be correct as the crank pulley never lined up to zero at TDC- however I recently got the crank pulley rebuilt and now at TDC it seems to point to zero. In any case my issue is that the rebuilder used some lame aftermarket chain sprocket at the cam that does not have the V to associate the - mark to. In addition it does not seem they put the brass link associated to the #1 dimple or any dimple at TDC the brass link is a few inches …

    zdude1967
    Last reply by zdude1967,
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