Comments by "" (@Wingnut353) on "VisioRacer" channel.

@mikegray8808 all the detroit diesels have blowers yes, but as he was saying many have a blower bypass valve + turbo this removes the pressure load from the blower essentially freewheeling it.... sure there is a little drag still but its a good compromise. The roots blowers are also very efficient as they supply pressure pulses rather than constant pressure. Current Achates power designed engines are kinds of like two detroit disel blocks pointed at each other and geared together (with the vale train completely removed.. and on top of that they can hit 50+% efficiency targeting 55+%.
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No he means servos... ie power steering servo. It's not like its that hard to steer even a servoless truck once it's rolling.
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@mushrooms8594 diesels actually don't make much power when running away as they are typically running extremely rich from sucking in crank oil etc... which is why you can typically stop them by cutting air flow or if no other option throwing it in gear (potentially requiring a tranny rebuild but saving the engine).
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@Drmcclung Dont' forget there were 1 2 and 3 cylinder screamin jimmies also....
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Another thing to note is that if you have electronic valve control... injection into a throttle body is apparently preferable! The other other upside is that it will also sound more like a carbureted engine. Check out the videos on the Koenigsegg freevalve tech... .its pretty impressive.
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@Jan_372 The steering wheel would only cam out... or disengage when the engine was turning int he correct direction... otherwise if it predetonated it would start up in reverse and fail to disenguage, a way to fix that would be to have a linkage from the governor kick out the starting linkage so it would disengage after reaching a certain RPM. Unfortunately it probably still would have broken your arm by then...
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Ahem, a diesel doesn't have a gas pedal...
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That'd be kinda sick..... a multibank bike. Gear it similar to the chrysler multibank. If they made an inline 6... you could build a clone of the chrysler multibank wth 5 blocks and the web block.
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@JohnSmith-yv6eq Don't have the evinrude 90 anymore (It was an a 1995 stratos) but my dad did recently buy a sundeck with a 115 Johnson on it, I think its an early fuel injected model but I haven't checked to be sure. It's too bad BRP completely axed all the outboard 2 strokes.
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If manufacturers would finally switched to opposed piston diesels that would probably be about 8-9mpg or more... they demoed a 270hp pickup that got 37mpg combined city / highway. which is frankly double what pickups usually get... and that was without a hybrid system burning gasoline and not diesel. Achates power look them up... at least the goverment saw the value and is funding cummins to build a tank engine based on this.
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@Retired Bore I don't think any of the achates engines have gone for an electric blower yet... since that would require a pretty beefy electric motor that isn't used 99% of the rest of the time, it would make more sense to just disengage the blower entirely, bypass it and rely on the turbo or a pair of turbos small and large or an electrically assisted turbo at idle. When running unloaded they are obviously 100% drag.... since they arent' doing anything at all so your statement that they are inefficient unloaded is well... it should go without saying. Perhaps an electrically assisted turbo would make a lot of sense as it could also be used to reduce turbo lag.
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I've heard of Detroit Diesels being ran at 5k+ for tractor or truck pulls... basically you need solid trunk pistons, the right porting in the cylinder, 4 port heads, tight valve springs, much higher fuel rail pressure (stock is like ~15psi... 80+ psi needed to feed it at those RPMs) and a huge turbo, probably sometihng like an 8V53 turbo per 3 cylinders, also blower bypass would be required to reduce parasitic loss at high RPMs.. Note it will sound very similar and perform similarly to a 4 stroke at 10k since it's firing twice as often due to being a 2 stroke. Also a DDEC or other electronic injection swap onto an older engine would help also since it would get closer to stochiometric mix than mechanical injection.
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I'd grew up going to the lake in the 90s and by then every mercury owner I saw was at the dock with a toolbox getting their engine working. Maybe this were just old diehards keeping thier favorite engines going I'm not sure but that was what I saw as a kid. Ont he other hand people with new evinrudes might take them out fail to warm them up and blow thier engines up gunning them out the dock (acutally saw this happen once) at least on the evinrudes the pistons are very loose and slap up untill the block warms up after about 5-10min of low rpm idle/cruise. Our evinrude wasn't without problems either... we always oiled it through the fuel to avoid the injector failure that caught some guys in the 90s. but in the end that engine still had issues after about 8 years or so... probably clogged jets or carb issues or something like that. Personally I don't think there is any outboard engine that is 100% reliable long term.... that is just people remembering through rose colored glasses, especially carbureted engines of the 50s-90s. Later injected engines have issues too... alot of the etec engines just have injectors fail.
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@Mark_317 skcreeee.. capitalist pigs are making things cheaper!
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To be fair... Kikehaefer was correct to a large extent, inboard/outboard boats have very low resale value because the inboard/outboard seals and complexity isn't worth fixing..... compared to outboard boats that last essentially as long as they are properly maintained, winterized and stored.
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12v71 is king of buses... there is 12v92 but never seen one in a bus.
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The best sounding bus engine is obviously the 12V71...
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