Quote:
Originally Posted by deansbimmer
The Injectable sealant will not be available any longer. Any old stock would also be questionable as it has a finite shelf life and expiration date.
Bimmerworld page is correct. The bedplate sealant works well, but must be applied properly and minimally, with the 1mm bead. This isn't necessarily a new thought either... It's factory on many N' engines and we've seen plenty of S65 bedplates with it over the years where it was used instead of the injected sealant.
The problem is that it's easy to over-apply and that will cause issues if not paid attention to.
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100% correct across the board.
Quote:
Originally Posted by Jbonly21
I reached out to a couple of S65 engine builders, and I was told they reached out to loctite. And it was confirmed they are no longer making that sealant. This is the new procedure and this is what mine looked like when I did it. I have done 200 miles so far.
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Yeah, we were EXTREMELY frustrated with this. In our opinion, "good 'nuff" just isn't good enough. Aside from using feeler gauges, nothing we do is done by feel. Every specification in every motor we build is manually checked for certainty, especially where critical tolerances are concerned. The idea of smearing sealant onto the bed plate had me pressed. So I designed this:
https://parteeracing.com/store/other...njection-tool/
Essentially, once the block is prepped and ready to check main clearances (bedplate bolted and torqued to the block), you tap the original sealant port on each side of the block with a 3/8" tap (I know, I know, it's a standard bolt size on a metric motor; I hate it too. But the sealant port is the exact diameter you need for a 3/8' tap, so using 3/8" eliminates the need to drill the side of the block before tapping it.), then go about taking your measurements as normal.
When you re-open the block to install the crank (assuming you were happy with clearances ofc), you can then clean out all debris from the tap, install the crank, re-torque the block, and once the main seals are installed, use our injection tool to inject the new BMW recommendation for bedplate sealant.
The process is extremely simple- easier IMO than the original stuff. Simply hand-thread the injection tool into the block, and then start turning the knob. The knurled knob is threaded onto the injector body; turning the knob will press the billet plunger into the injector body, which will then hydraulically force the extremely viscous sealant through the channel with ease.
The injector tool will create well over 10,000 PSI at just 14Nm of torque applied to the knob, but in our experience, far less is required- we have never needed more than our hands to inject the sealant all the way through the channel.