Author Topic: Small Journal Crankshaft Sludge Trap Plug.  (Read 471 times)

Offline 7iain7

  • Moving Up
  • **
  • Join Date: Jun 2023
  • Posts: 37
  • Karma: 0
Small Journal Crankshaft Sludge Trap Plug.
« on: 16.12. 2023 17:03 »
Merry Christmas all.

I want to clean up the slug trap threads on a Small Journal Crankshaft.
Can any one tell me what size tap I need.

Many thanks, Iain
52 A10

Online berger

  • Wise & Enlightened
  • *
  • Join Date: Nov 2017
  • Posts: 3214
  • Karma: 22
  • keith.uk 500sscafe.norbsa JDM honda 750fz
Re: Small Journal Crankshaft Sludge Trap Plug.
« Reply #1 on: 16.12. 2023 17:08 »
it is 5/8ths 20 tpi

Offline 7iain7

  • Moving Up
  • **
  • Join Date: Jun 2023
  • Posts: 37
  • Karma: 0
Re: Small Journal Crankshaft Sludge Trap Plug.
« Reply #2 on: 16.12. 2023 17:19 »
Thank you
52 A10

Online limeyrob

  • Resident Legend
  • *****
  • Join Date: Nov 2023
  • Posts: 931
  • Karma: 4
Re: Small Journal Crankshaft Sludge Trap Plug.
« Reply #3 on: 16.12. 2023 19:54 »
Try e-bay, I'm doing this job on a big journal crank at the moment and got a new Dormer 7/8 BSF tap off e-bay for £8 inc postage.  There's probably no demand.  I got a bottom tap as I wanted to scrape a lot of carbon out the threads.
Slough 59 GF/SR