Jump to content
HybridZ

Search the Community

Showing results for tags 'mechanical'.

  • Search By Tags

    Type tags separated by commas.
  • Search By Author

Content Type


Forums

  • Technical
    • FAQs
    • Model Specific
    • V8 Z Forums
    • 6 Cylinder Z Forums
    • Other Engines
    • Engine Components
    • Body Kits & Paint
    • Windtunnel Test Results and Analysis
    • Brakes, Wheels, Suspension and Chassis
    • Drivetrain
    • Fabrication / Welding
    • Interior
    • Miscellaneous Tech
    • Trouble Shooting / General Engine
  • General
    • Announcements
    • Non Tech Board
    • New Members Forum
    • Members Projects
    • Motorsports / Events
    • Buy / Sell / Trade
    • Group Buys
    • Vendor's Forum
    • Links
    • Site Support

Blogs

  • Blog 7794
  • Blog 7796
  • Blog 7797
  • Blog 7801
  • Blog 7810
  • Blog 7821
  • Blog 7850
  • Blog 7876
  • Blog 7900
  • Blog 7903
  • Blog 7918
  • Blog 7945
  • Blog 7995
  • Blog 8097
  • Blog 8113
  • Blog 8124
  • Blog 8199
  • Blog 8217
  • Blog 8223
  • Blog 8239
  • Blog 8335
  • Blog 8424
  • Blog 8478
  • Blog 8501
  • Blog 8644
  • Blog 8751
  • Blog 8853
  • Blog 9074
  • Blog 9088
  • Blog 9095
  • Blog 9152
  • Blog 10389
  • Blog 10579
  • Blog 10681
  • Blog 10929
  • Blog 10956
  • Blog 11195
  • Blog 11737
  • Blog 11794
  • Blog 11853
  • Blog 12120
  • Blog 12435
  • Blog 12884
  • Blog 13129
  • Blog 13159
  • Blog 13200
  • Blog 13472
  • Blog 13567
  • Blog 13587
  • Blog 14207
  • Blog 14439
  • Blog 14625
  • Blog 14703
  • Blog 14909
  • Blog 14919
  • Blog 14975
  • Head Gasket for 3.1 liter stroker engine
  • Blog 15298
  • Blog 15393
  • Blog 15520
  • Blog 15602
  • Blog 15654
  • Blog 15717
  • Blog 15865
  • Blog 16224
  • Blog 16227
  • Blog 16485
  • Blog 16662
  • Blog 16809
  • Blog 16878
  • Blog 16923
  • Blog 17059
  • Blog 17103
  • Blog 17116
  • Blog 17333
  • Blog 17402
  • Blog 17506
  • Blog 18026
  • Blog 18084
  • Blog 18466
  • Blog 18819
  • Blog 19188
  • Blog 19475
  • Blog 19671
  • Blog 19685
  • Blog 20165
  • Blog 20200
  • Blog 20239
  • Blog 20330
  • Blog 20345
  • Blog 20475
  • Blog 20568
  • Blog 20611
  • Blog 20767
  • Blog 20885
  • Blog 21113
  • Blog 21316
  • Blog 21355
  • Blog 21400
  • Blog 21541
  • Blog 21630
  • Blog 21672
  • Blog 21712
  • Blog 21925
  • Blog 21950
  • Blog 22036
  • Blog 22272
  • Blog 22312
  • Blog 22331
  • Blog 23034
  • Blog 23042
  • Blog 23220
  • Blog 23246
  • Blog 23322
  • Blog 23406
  • Blog 23570
  • Blog 23700
  • Blog 23718
  • Blog 23737
  • Blog 23762
  • Blog 23794
  • Blog 23917
  • Blog 23956
  • Blog 23959
  • Blog 24064
  • Blog 24131
  • Blog 24139
  • Blog 24205
  • Blog 24221
  • Blog 24240
  • Blog 24430
  • Blog 24435
  • Blog 24495
  • Blog 24576
  • Blog 24643
  • Blog 24722
  • Blog 24770
  • Blog 24833
  • Blog 24848
  • Blog 24853
  • Blog 24872
  • Blog 25030
  • Blog 25248
  • Blog 25289
  • Blog 25373
  • Blog 25396
  • Blog 25527
  • Blog 25674
  • Blog 25853
  • Blog 25886
  • Blog 25922
  • Blog 25986
  • Blog 26129
  • Blog 26181
  • Blog 26217
  • Blog 26240
  • Blog 26247
  • Blog 26299
  • Blog 26401
  • Blog 26440
  • Blog 26559
  • Blog 26735
  • Blog 26736
  • Blog 26831
  • Blog 26844
  • Blog 26883
  • Blog 26884
  • Blog 27002
  • Blog 27028
  • Blog 27169
  • Blog 27260
  • Blog 27267
  • Blog 27307
  • Blog 27345
  • Blog 27400
  • Blog 27428
  • Blog 27452
  • Blog 27558
  • Blog 27622
  • Blog 27707
  • Blog 27735
  • Blog 27877
  • Blog 28049
  • Blog 28070
  • Blog 28199
  • Blog 28214
  • Blog 28234
  • Blog 28308
  • Blog 28320
  • Blog 28475
  • Blog 28476
  • Blog 28494
  • Blog 28657
  • Blog 28671
  • Blog 28814
  • Blog 28880
  • Blog 28923
  • Blog 28943
  • Blog 28945
  • Blog 28982
  • Blog 28993
  • Blog 29008
  • Blog 29036
  • Blog 29168
  • Blog 29412
  • Blog 29467
  • Blog 29618
  • Blog 29710
  • Blog 29759
  • Blog 29832
  • Blog 29868
  • Blog 29922
  • Blog 29950
  • Blog 30009
  • Blog 30027
  • Blog 30175
  • Blog 30182
  • Blog 30287
  • Blog 30302
  • Blog 30339
  • Blog 30443
  • Blog 30461
  • Blog 30474
  • Blog 30517
  • Blog 30556
  • Blog 30654
  • Blog 30729
  • Blog 30758
  • Blog 30773
  • Blog 30842
  • Blog 30872
  • Blog 30886
  • Blog 30989
  • Blog 31027
  • Blog 31048
  • Blog 31073
  • Blog 31109
  • Blog 31116
  • Blog 31138
  • Blog 31251
  • Blog 31307
  • Blog 31343
  • Blog 31378
  • Blog 31393
  • Blog 31432
  • Blog 31495
  • Blog 31507
  • Blog 31592
  • Blog 31626
  • Blog 31643
  • Blog 31692
  • Blog 31717
  • Blog 31760
  • Blog 31768
  • Blog 31777
  • Blog 31826
  • Blog 31851
  • Blog 31877
  • Blog 31907
  • Blog 31942
  • Blog 32009
  • Blog 32051
  • Blog 32073
  • Blog 32094
  • Blog 32111
  • Blog 32142
  • Blog 32169
  • Blog 32198
  • Blog 32250
  • Blog 32256
  • Blog 32259
  • Blog 32262
  • Blog 32291
  • Blog 32371
  • Blog 32417
  • Blog 32463
  • Blog 32515
  • Blog 32519
  • Blog 32562
  • Blog 32678
  • Blog 32695
  • Blog 32725
  • Blog 32981
  • Blog 33294
  • Blog 33517
  • Blog 33612
  • Blog 33734
  • Blog 33993
  • Blog 34018
  • Blog 34140
  • Blog 34452
  • Blog 34586
  • Blog 34855
  • Blog 35117
  • Blog 35378
  • Blog 35742
  • Blog 35956
  • Blog 36022
  • Blog 36030
  • Blog 36711
  • Blog 36997
  • Blog 37069
  • Blog 37070
  • Blog 37103
  • Blog 37166
  • Blog 37257
  • Blog 37645
  • Blog 37818
  • Blog 37954
  • Blog 38369
  • Blog 38569
  • Blog 38681
  • Blog 38923
  • Blog 38945
  • Blog 39122
  • Blog 39441
  • Blog 39494
  • Blog 39529
  • Blog 39575
  • PSL_240z's Blog
  • Phlebmaster's Blog
  • dhp123166's Blog
  • miguel240zcruz's Blog
  • dsalni's Blog
  • dsalni's Blog
  • beon's Blog

Calendars

  • Community Calendar

Categories

  • Configuration File Sharing
  • Drawing Files, Templates
  • Manuals, Diagrams, Guides
  • Software, Calculators
  • Other misc files

Product Groups

There are no results to display.


Find results in...

Find results that contain...


Date Created

  • Start

    End


Last Updated

  • Start

    End


Filter by number of...

Joined

  • Start

    End


Group


AIM


MSN


Website URL


ICQ


Yahoo


Jabber


Skype


Location


Interests

Found 1 result

  1. So I finished a rebuild of a 1982 280zx Engine recently and put 4-screw SU carbs on it and a stock exhaust manifold with 2 inch pipe and a turbo exhaust back so I can drive it daily with out waking up the neighbors. This is going to be pretty long so go ahead and ask questions and thanks for reading. Now to my problem/question: Driving now during break-in the engine makes a bothersome sound for daily driving that has not gone away in 200+ miles of driving. It has a very lopey and gurgle/burble exhaust and rev characteristic that sounds like a car with a cam that is way too hot for the application even though my cam is the stock grind. The idle is solid and does not jump around more than 100rpm on occasion and falls back to normal without dropping low after letting off the throttle. I fell like the carbs are well tuned and not the problem but I feel like the issue has something to do with timing and/or various tuning adjustments/gap settings of the car. I cannot for the life of me find a 280zx distributor with a working Vacuum advance so I've given up on trying to find a working VA and come to grips with losing the mpg saving that come from the Vacuum Advance mechanism. After tons of research I found info on using mechanical advance only and ended up buying a distributor on a recently wrecked running car that I pulled off and put on with very little rebuilding. 1st. I put it on and centered the Stator/reluctor inside, checked for basic function, set plug gap to 0.040", checked compression (all cylinders ~160), rechecked my hot valve gap and did some small adjustments to specs. Wired up the E12-80 module (tach still works, lucky me). Also cleaned the ztherapy carbs out and set to baseline for initial start up. 2nd. Then I set initial timing to 10 degrees BTDC and revved the engine to get mechanical advance all in (I messed up resetting the timing pretty badly at first and caused a few massive backfires, but corrected it quickly and nothing seemed damaged). I read 22 degrees of mechanical advance at 3500rpms which seemed higher than I would want for mechanical only advance. 3rd. I bumped initial timing to 15 degrees and got 37 degrees total at 3500rpms again and the car began to drive a better than when I had the pertronix and 240z distributor on the engine but it still seems to have a decent amount of noticeable engine/valvetrain noise and still doesn't have the free revving capability many people claim comes from the 280zx swap and from other Z cars I have driven in. Tuned in the carbs best I could with unisyn for the smoothest idle, the smoothest I got still seemed rougher than it should be, and got 22 inches of mecury at idle from a vacuum gauge at the balance tube. 4th. Checked the distributor advance reference spreadsheet for my model, D6K81-01 which should actually have 17 degrees centrifugal/mechanical advance at 2800rpms. If that is true than I should be able to go to at least 20 degrees initial which I think might be better for smoothing out the engine and driving feel. Should I trust my timing light here? I am new to timing and did tons of research before attempting it so do you think it is possible I may have used my dial on my timing light incorrectly causing the reading to be a bit off? 5th. I have most of the parts from 2 280zx distributors I tore down as well as the 240z distributor so I'm going to try and rebuild a distributor from parts while I use the current one to drive my car daily and continue to finish engine break-in. The new one I build will have no Vacuum advance either cause none of mine are in usable, the 240z vacuum dashpot had a medium fast leak that keeps getting worse over time so it's not reusable either. I also heard that many rebuilt dashpots have the wrong advance setting and can damage the engine if used, plus I'm sure every breaker plate I have has the broken plastic bearing run. I'm asking here on hybridz cause we have no reliable distributor shops in the area so I can't have it recurved by a professional so I'll do it myself and learn from the experience. How do you go about re-curving the mechanical advance yourself? Like where do did you get different springs for the weights and how do you do this slotting thing to lower the total amount of mechanical advance? From what I understand about timing, advance, VA, idle/cruise mixture, and off-idle mixture it seems like I would want about 23 degrees initial and 12 mechanical to when all in. I would like to know how that sounds to you smart ignition guys and here suggestions or examples of your recurves. Additionally I would like to here your thoughts on everything else I have mentioned that you think might be causing the odd driving and revving (e.g. plug gap, exhaust, etc...). Or if you think this is caused by a completely different issue than let me know, cause I have the original 4-speed that I did a mild overhaul on while out, but I have not done any work to differential or the hubs so something could be catching or clunking in there. I'm not very sure of the fuel delivery system (small leak from the Facet fuel pump and weird FPR, and no fuel rail or retunr line, but fuel pressure checked out) so I'm replacing that shortly anyway.
×
×
  • Create New...