Need engine for airplane
Thread Starter
|
Junior Member
Joined: Nov 2009
Posts: 5
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 .
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 .
Thread Starter
|
Junior Member
Joined: Nov 2009
Posts: 5
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 ,
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 ,
Junior Member
Joined: Dec 2009
Posts: 1
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 .
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 .
Junior Member
Joined: Oct 2009
Posts: 8
From: United States
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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