I have used for years NGK B6HS and are, available at the local corner store in Australia. They are conventional car plugs and good for 150hours. I usually replace once a year as they are so cheap.
I use there washer plus the CHT copper ring as this prevents the plugs sticking thru too much in head. I use MGL digital CHT and monotor all 4 cylinders. Great engine insurace policy. I gap at 0.48mm as gaps only get bigger with time. The gap is supposed to be 0.5mm The Limbach plugs are good for 500hrs I believe and are very good. Ian McPhee +61 428847642 On Sat, 6 May 2023, 12:21 pm Rob Thompson, <[email protected]> wrote: > > No answer. It is Saturday afternoon on this side of the date line. > I will give them a call on Monday morning. > regards > Rob > > Rob Thompson > 0429 493 828 > > > > On Sat, May 6, 2023 at 10:29 AM Kristin Nowell <[email protected]> > wrote: > >> hi Rob, >> one wonders if they actually have them...the pictured plugs have an >> incompatible plug/harness interface, ?????????????????????? Maybe you could >> ring them and find out 🤤 Pretty please, with sugar on top. >> Remember, the original harness had a wb4a compatible interconnect which >> screws on (10nm torque, 19mm crows foot spanner and a 11mm open end spanner >> to prevent lead twisting) not a push on nipple pincher / terminal nut. >> Cheers Master, >> Slacko. >> >> On Fri, May 5, 2023 at 6:44 PM Rob Thompson <[email protected]> >> wrote: >> >>> These guys in Australia have them listed >>> http://allpartsautomotive.com.au/online-store/WB4A.HTM >>> regards >>> Rob >>> >>> Rob Thompson >>> 0429 493 828 >>> >>> >>> >>> On Sat, May 6, 2023 at 8:33 AM Kristin Nowell <[email protected]> >>> wrote: >>> >>>> there are 4 for sale on eBay by a German profiteer for 220 euros. I had >>>> a big box full of them but they sold out quickly. looks like you'll have to >>>> buy a new slick harness to go with the new style plugs.$$$$ >>>> I am currently on my last four wb4a'sbefore I change over. >>>> >>>> On Fri, May 5, 2023 at 6:17 PM Michael Stockhill <[email protected]> >>>> wrote: >>>> >>>>> Thanks immensely, Rob >>>>> >>>>> On Fri, May 5, 2023, 3:47 PM Rob Thompson <[email protected]> >>>>> wrote: >>>>> >>>>>> Here is the link to the Limbach service bulletin when they changed >>>>>> from the Bosch WB4A to Eyquem plugs. >>>>>> >>>>>> https://limflug.de/en/support/downloads.php?type=technicalBulletins&id=905.700.051.005.pdf&action=download >>>>>> >>>>>> ....and then they changed to their own Limbach branded plugs. >>>>>> >>>>>> https://limflug.de/en/support/downloads.php?type=technicalBulletins&id=905.700.063.505.pdf&action=download >>>>>> >>>>>> I suspect the changes were for commercial rather than technical >>>>>> reasons. >>>>>> >>>>>> regards >>>>>> Rob >>>>>> >>>>>> Rob Thompson >>>>>> 0429 493 828 >>>>>> >>>>>> >>>>>> >>>>>> On Sat, May 6, 2023 at 6:38 AM Michael Stockhill <[email protected]> >>>>>> wrote: >>>>>> >>>>>>> Oops. The Bosch number is WB4A that I have. >>>>>>> >>>>>>> Michael >>>>>>> >>>>>>> On Fri, May 5, 2023 at 11:56 AM Michael Stockhill <[email protected]> >>>>>>> wrote: >>>>>>> >>>>>>>> My Eyquem A755 spark plugs are aging about the same as me. I am >>>>>>>> looking for a substitute. I have some Bosch EBC G7. Are they suitable? >>>>>>>> Does someone have a suggestion for replacements? >>>>>>>> >>>>>>>> Thanks >>>>>>>> >>>>>>>> Michael Stockhill >>>>>>>> Polson, MT USA >>>>>>>> >>>>>>>
