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  1. garfieldthecat

    Question about 2F intake manifold taper screw plug

    Those are the screwplugs @ToyotaMatt Do you know what tap size I can use to re-thread the cross threaded threads in my manifold? I think the size for this application is 3/8"-19 in either JIS PT aka BSPT aka ISO R(or Rc)? Please see attachment below and previous JIS attachment posted by @2mbb...
  2. garfieldthecat

    Question about 2F intake manifold taper screw plug

    Wow, excellent piece of history here. Thank you for sharing this. I might be able to take this to a specialty bolt place nearby that has measuring instruments and see if they can use this information to classify the screw plug for me. I think we are narrowing it down! I appreciate everyone's...
  3. garfieldthecat

    Question about 2F intake manifold taper screw plug

    Thanks for this @2mbb I think the 19 tpi is probably what the Toyota screw plug is too. I also found this article online Fitting Connection Types: British, German & Japanese - https://blog.brennaninc.com/connection-types-british-connections that talks about how BSPT connections are...
  4. garfieldthecat

    Question about 2F intake manifold taper screw plug

    I'm leaning in this direction @Godwin I like the idea of a dashboard of all the information I can get on the engine while I'm driving. I think it would help with any issues that might come up later too like diagnosing, tune-up, etc. Just want to see what parts would be needed and ask others with...
  5. garfieldthecat

    Question about 2F intake manifold taper screw plug

    Thank you for this research. A little while ago this evening I came across this thread in the 40/55 tech forum with a similar part: https://forum.ih8mud.com/threads/vacuum-test-port-tap-location-on-intake-manifold.1221073/ "Union (For Front Drive Shift) - Part Number 90404-51093" Credit to...
  6. garfieldthecat

    Question about 2F intake manifold taper screw plug

    UOTE="Spike Strip, post: 14280747, member: 9610"] Oh yeah - It was just the Exh manifold. Forgot. Anyway, I'm not sure, but I think all BSP is Imperial. I'm not 100% on that, but pretty sure there's no such thing as Metric BSP thread. Have you torqued down the manifold? That plug is...
  7. garfieldthecat

    Question about 2F intake manifold taper screw plug

    Thank you @OSS I figured it must be metric but the thread didn't match any of the metric leaves in my thread pitch gauge, and, yes the hex is a metric size 8, but I was thrown off by the 16.4mm measure I got with the caliper. I appreciate the sealer information. I'll have to get that for when I...
  8. garfieldthecat

    Question about 2F intake manifold taper screw plug

    Hello fellow MUDders, I am putting together a 2F for my 60 with scraped up parts and have a question about the 2F intake manifold's taper screw plug, pictured here: A previous owner of the intake manifold I have crossthreaded the hole the taper screw plug goes into and I want to chase the...
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