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The Buchka 242 Fake Racecar

It's getting a new intake manifold and new headers. That's it for engine mods though. I've been talking with the engineer that originally calibrated the engine at Volvo and he's helping us out with base VVT and timing maps..
 
Yeah. Just letting the design stew for a bit. Already have some changes in mind. It's a pretty big outlay, so I'd like to get it right enough the first time.
 
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Replacement MS main board. Takes an MS3 processor. Has hardware for 8 spark outputs, 8 injector outputs, four cam VVT, dual map sensors, six wheel speed inputs, real time clock, knock sensor interface, spots for two SLC DIY wideband drivers, on board CAN I/O expander with 16 analog inputs and 8 digital inputs, and waterproof automotive grade connectors. There's a bunch of other stuff in there as well. It's a long list.

Not available, not for sale, so don't ask.
 
What's better than a B8444S?

Two B8444S's.

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This second motor is most definitely trashed to some extent. Looks like the previous owner drove it with a bad balance shaft bearing and popped the timing chain. Not sure how badly the top end is damaged, but we'll be tearing it down shortly. Should make for a great mock-up engine and extra parts source. It also came with a few boxes of crap and a complete transmission (woo!).

njbrickwithboost said:
Awesome...Good luck with the build
Click to expand...

Thanks!
 
Got it fully torn down. Block, crank, rods, and pistons look pretty good. Other than that, it's fairly wasted.

The failure mode was fairly obvious once we got the balance shaft out. Rear balance shaft bearing seized up and fell apart, leading to failure of the front balance shaft bearing. Once the shaft was unable to spin, the sprocket sheared off and the timing chain suffered... shall we say "spontaneous catastrophic disassembly". The chain cracked the oil pump housing and broke one of the tensioners. Also found some bent valves.

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Haven't looked too closely at anything yet, but first impressions of the design are good. The castings look to be very high quality and the designers have clearly gone to some lengths in order to make a compact and light weight engine.
 
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