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Need engine for airplane

  #1  
Old 11-20-2009, 12:12 PM
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Default Need engine for airplane

I need engine weights ( aircraft need light weight )

on 4 cylinder , DOHC Tigers .



First glance ... Tiger engine could work well in plane .

But only DOHC , then a DIY TURBO .

What a RIP OFF , $1000 for a TURBO , you could do

better making it yourself !

They are dual flow , radial then axial flow ( compressor).

Thats a complication . Obviously axial is

far too expensive , use radial ( col = centrifugal ) .

Ball bearings in a Turbo are an expensive "feature" ,

a very high maintaince item .

But a DIY turbo can use a much larger diam wheel ,

and thus ball bearings .

Large diameter slows spoolup . BAD ...

Aircraft engines are constant speed , no problem .





BTW engine builders always over boost PSI to engine .

Its for this or that engine limit , rule , regulations ..

But street racing needs large ,light weightengine , with

low boost . The result is more HP to the wheels .

Next , with DOHC , you can control both ends of power ,

RACE or ECONOMY .

a DIY hydraulic advance/retard on the intake cam ,,

lowers the effective C.R. to max the fuel economy .

WIKI Atkinson/Miller cycles ,

internal combustion engines .






waste gate

and the fuel economy .
 
  #2  
Old 11-20-2009, 12:54 PM
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BTW . Acura B engines were all aluminum , right ???
 
  #3  
Old 11-20-2009, 04:20 PM
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Honda EU Civic R K 20 Z3 .......good engine .

210 hp / 7800 ..... 146lb ft 5600 rpm roller tappets , iVTEC
 
  #4  
Old 11-23-2009, 01:06 PM
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Airplanes need large DOHC engines ,

to retard intake cam for economy .

None of the avail V6 had DOHC .

Still cant figure which Acura engines are aluminum block .

JDM engines are low cost . $1000 for a Acura engine is easy

even if ya have to add $1500 in pistons/rings/ "mains" and "rods"
( bearings) . Butchers will bore your short block and claim the scratches
in bore are for seating in the rings . No car maker does that !

Im thinking about making turbo-chargers . Dual , so i can block one
at 20,000 altitude . Waste gates nor expander vanes arent as effecient as 2 Turbos in parallel .








F and H engines are DOHC ,
 
  #5  
Old 11-24-2009, 10:04 AM
L3GDKANG/JDM-KA's Avatar
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NSX motor is DOHC
 
  #6  
Old 11-24-2009, 10:05 AM
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all legend blocks and nsx blocks a aluminum
 
  #7  
Old 12-06-2009, 02:50 PM
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Default Aluminum block tigers

For airplanes , DOHC is essential , to tune intake cam dynamically

with a tiny hydraulic rotary actuator hooked on end of cam .

Im now interested in H and F22,F23 DOHC engines .

But i lack knowledge of which were iron block .

I really need the all aluminum blocks .
 
  #8  
Old 12-27-2009, 12:28 AM
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Default Need engine for airplane

ive got the 305 engine in my RS. its got 111,000 on it. but runs great, i just got whole suspension re-done. i want more out of my engine though.. what can i do to get some added Hp?
 
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