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Re: What five cars that don’t exist would you like to see/buy/just have available?
I wrote:
A boxer engine needs room for exhaust manifolds below the crankshaft centre-line, meaning the shaft itself cannot be as low in the car as might be the case with a vee.
The 918 engine is a vee, not a boxer, so it naturally has room for the exhaust manifolds either side of the vee block and at or above the level of the crankcase centre-line, as I implied.
On the other hand, the exhaust ducts in the heads of a boxer engine would have to vent downwards to achieve a reasonably-shaped combustion chamber, normally resulting in the outlet tracts from the chambers being directly below the heads. Making room for them would then involve raising the engine, including the crankshaft centre-line, to a higher level than would otherwise be necessary, just as I said
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fritz
Re: What five cars that don’t exist would you like to see/buy/just have available?
Flat 8 can still have exhaust ports on the top side, and in that configuration, it would be much easier to turbo charge it.
Composite intake runners can snake around the belly pan to get to the intake.
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Re: What five cars that don’t exist would you like to see/buy/just have available?
Whoopsy:Flat 8 can still have exhaust ports on the top side, and in that configuration, it would be much easier to turbo charge it.
Composite intake runners can snake around the belly pan to get to the intake.
That would be one hell of a compromise in terms of optimised air inlet tracts, and all just as a misguided attempt to adhere to the boxer engine layout?
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fritz
Re: What five cars that don’t exist would you like to see/buy/just have available?
Since the Scion FR-S and the Porsche Cayman are usually mentioned as being the cars with the lowest center of gravity, it would seem to non-engineers that the boxer layout doesn't suffer too much in that regard. 
Aug 4, 2015 6:56:01 PM
- JoeRockhead
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Whoopsy
Re: What five cars that don’t exist would you like to see/buy/just have available?
Whoopsy:Flat 8 can still have exhaust ports on the top side, and in that configuration, it would be much easier to turbo charge it.
Composite intake runners can snake around the belly pan to get to the intake.
Have a look at the design of the N63/S63 BMW turbo V8, or the new AMG "hot v" v8 if you're interested in that stuff. Both have exhaust ports and turbos in the V as opposed to the outer side. It's a bitch to cool, but it reduces turbo lag due to the "pulse tuned" manifold design.
Aug 5, 2015 9:35:31 AM
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kudryavchik
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Aug 8, 2015 2:56:20 PM
- DaveGordon
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Aug 8, 2015 3:24:47 PM
- Gladstone
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