Originally Posted by
BlackSnake99
Interestingly, I asked Dan Lesser of VSP why people hadn't swapped an entire Gen 4 engine into a Gen 2. Here was his response.... I would imagine the same issues would apply to a Gen V engine....
I actually get asked this a lot... you arent factoring in engine management, and the fact that Gen-1/2/3 controllers CANNOT run normal Gen-4 engines.
Thanks for the expl
Let me put it into perspective;
Gen-4 engine: ~15K average cost
Engine management: 7K minimum
DBW Pedal: 1K
Harness design and construction: 5K+... and thats being very generous, and very simple, likely making an adapter harness to connect together what is already there. Surely not a full MIL-Spec job, and will be ignoring a LOT of what is available due to lack of harness budget.
... and you still have to contend with a multi-controller design, non-working gauges, or have to develop secondary sensor sets for gauge use as the Gen-2/4 sensor sets are quite different. Gen-4 Crank/Cam trigger patterns and various sensors cannot even be read by the JTEC ECU's or Gen-2 gauge panel. To add insult to injury, you just scrapped a decently stout forged short block, for a very tempermental hypereutectic piston short-block. The block and crank are stronger/larger, but the rods/pistons, not so much.
So... 28K minimum for ~600 horsepower. VS-X700 starts @ 17K. You just paid 11K more for 100 horsepower less the other way around, and cannot add boost without an engine build. Sure, you added technology, but without the proper controller, wiring, and gauge sets to even make use of it... it doesn't matter.
If you are looking to build a balls to the wall turbo car, and were going to be doing high-end EMS will all the fancy parts and engine build ANYWAY... it starts to make more sense. For anything else, it makes no sense due to the engine management and wiring changes required just to make it even run.
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