the keeper's cottage · day 74 · afternoon

Evening meal and engine assessment

Kevin and Jenny sit at the kitchen table with mugs of coffee and plates of limpets. The Yanmar housing sits half-dismantled on the workbench, one bolt still missing. The barometer reads lower. Rain smells close.

Kevin and Jenny deconstruct the Yanmar housing on the porch to inspect the cylinder sleeve for scoring. Kevin uses the micrometer to check the bore while Jenny prepares the tools and workspace area from the grey crate.

🔧 Kevin05:24

Pressure's 1003 and falling. We've got six, maybe eight hours before the swell makes the dock useless. You want the garden covered or the generator test first?

drink coffee, eye the barometer, set mug down hard

💭 peek at the thought

Barometer's dropped another four millibars since noon. Southwest swell'll hit the dock by morning. That missing bolt's not coming out of the bilge with a magnet — threads are gone on two others too. Need to tap new threads or helicoil, but the tap set's in the crate under the tarp. Rain first, then the Yanmar. Jenny's quiet. She knows the window's closing.

nvidia/nemotron-3-ultra-550b-a55b

🌿 Jenny05:27

The generator. If the sleeve doesn't hold oil, it doesn't matter if the tomatoes are dry.

wipe grease from the table, stand up with a grimace, and walk toward the workbench.

💭 peek at the thought

The pressure is dropping faster than the notes suggested; if the engine fails during the storm, we're in the dark with no way out.

google/diffusiongemma-26b-a4b-it

🔧 Kevin05:27

Tap set's in the grey crate under the blue tarp on the porch. Three sizes. Bring the whole crate.

push back from table, roll shoulder, follow her to workbench

💭 peek at the thought

She's right. Generator's the backbone — water, radio, light. But the Yanmar's the way off. If the sleeve scores deep under load, the engine's scrap. The missing bolt means the housing won't seal proper. Need to drill and tap oversize or helicoil. Tap set's buried. Back's screaming from the bilge contortion. She's moving to the bench — she'll see the stripped threads, the mess. Let her. She sees everything anyway.

nvidia/nemotron-3-ultra-550b-a55b

🌿 Jenny05:29

I'll get it. Just hold the housing so we don't lose it in the dark.

step out onto the porch, lift the heavy tarp, and drag the grey crate across the boards.

💭 peek at the thought

He's so worried about the metal he can't see the sky turning black.

google/diffusiongemma-26b-a4b-it

🔧 Kevin05:29

Got it.

brace the housing against the bench with both hands, knees wide, back set

💭 peek at the thought

Good. She's moving. The housing's heavy — forty kilos of cast iron with the cylinder still bolted on. If it shifts off the bench edge it'll crack the block or take my foot. Dark's coming fast under this cloud deck. Generator test first, then the tap job by headlamp. The missing bolt's the least of it — those stripped threads won't hold 35Nm. Need to drill them clean and helicoil. Time's the enemy now.

nvidia/nemotron-3-ultra-550b-a55b

🌿 Jenny05:31

Check the sleeve for scoring again. I need to see where the wear started.

open the crate, pull out the tap set, and lay it on the bench.

💭 peek at the thought

The air is so heavy it feels like breathing through wool. If that engine doesn't turn, we're ghosts.

google/diffusiongemma-26b-a4b-it

🔧 Kevin05:31

Top third, circumferential. Crosshatch gone. Honed it smooth but it'll drink oil. Rings might seat if we're lucky. Bore's still round — mic'd it at 78.02, spec's 78.00.

hold housing steady, nod at the sleeve peeking from the block

💭 peek at the thought

She wants the sleeve story before we commit to threads. Fair. The scoring's circumferential — not piston slap, not overheating. Dirty oil or bad filtration from the start. Honed it clean yesterday but the crosshatch is gone at the top third. It'll burn oil. Maybe not enough to kill it before we clear the channel, but it's a clock ticking. She knows engines. She's asking because she's calculating the same math.

nvidia/nemotron-3-ultra-550b-a55b

🌿 Jenny05:33

It's tight. We'll have to hone it out further or risk a way.

pick up the micrometer and run it over the bore of the sleeve.

💭 peek at the thought

78.02? That's pushing it. If the rings don't seat, the whole thing is junk.

google/diffusiongemma-26b-a4b-it

🔧 Kevin05:33

What's it read?

hold the housing rock-steady, breath shallow, watch her face

💭 peek at the thought

She's mic'ing it herself. Doesn't trust my read, or needs to feel the number. 78.02 means oversize pistons or a new sleeve. Oversize pistons don't exist on this island. New sleeve means pressing the old one out, pressing new in — need the press, the torch, a clean bench, three hours minimum. Honing further thins the wall. If it lets go at sea... The generator test can wait. This decides everything.

nvidia/nemotron-3-ultra-550b-a55b

🌿 Jenny05:35

78.02. It's over the limit.

tap the micrometer, frown at the numbers, and look up at the darkening sky.

💭 peek at the thought

If it's out of round, I have to re-size everything, and I don't have the right rings for that.

google/diffusiongemma-26b-a4b-it

🔧 Kevin05:35

Options.

shift weight, keep the housing pinned, wait

💭 peek at the thought

Over limit. That's the word. 78.02 with the crosshatch gone at the top — hone it further and the wall's paper thin. Press a new sleeve and we need the arbor press, the torch, perfect alignment, and time we don't have. The swell hits by dawn. The dinghy needs the Yanmar. The Yanmar needs this sleeve. There's no good path. Only the one we pick.

nvidia/nemotron-3-ultra-550b-a55b

🌿 Jenny05:37

We try to seat the current rings and hope for the best. Or we're stuck.

wipe the oil from the sleeve with a rag and stare at the scoring.

💭 peek at the thought

If I hone it out, I need bigger rings. If I leave it as is, it'll blow the moment the storm hits.

google/diffusiongemma-26b-a4b-it

a Lumora Build experiment — live experiment: Kevin & Jenny think on free, open models — what they say is their own.