>J, a turbo is more thermally efficient, but there are
>millions of factors involved. An Eaton MP45 comes
>with a bypass on it, so you don't really use that gas
>when you don't need it.(If you are me, you will be owning
>Exxon) Also, a kit for a supercharger may end up costing
>around $2600 rather than $3995. Also, the power from a
>supercharger is linear. Since we aren't looking to get more
>than 200 horses out of it, there are no huge benefits on the
>turbo side. Albeit, there may be some but not for another grand
>or two. You can easily get close to 200hp which is worth
>$2k. To me at least; but $4k is pushing it. If you plan on going
>over 200hp, I would suggest going with a turbo, also with
>over 200hp, and either air crusher, I would suggest you
>invest in some good forged pistons. As far as the reliability goes,
>the hp levels we are going for are fine using either, but when you get
>into more psi, you would want to go with a Turbo as a Turbo does not
>kick in until you are higher in the rpm range you do not have to
>worry about throwing a rod as much. The level of pressure we are
>going for this will not be an issue. If we were to overdrive it and go for
>more psi than we are planning, I would suggest some custom
>H-Beam rods and some really good pistons. As far as what we
>are planning, I don't think it would be necessary to even worry
>about this stuff. We are only seeking around a 40% gain.
The price you are qouting is with no fuel managment other than some staic
retard on the distributor, a fuel pump and an FMU. This is a very crude way
to get the engine control situation handled and you will not make 200 hp out
of a GA16 on pump gas with any sort of reliablity. We were bairly able to
get 200 hp out of a B16A, a superior motor with a JR supercharger with water
injection and lots of tuning on pump gas. With a Zdyne ECU were were able
to make 200 hp w/o the water injection.
There is no way you are going to be able to sell a supercharger kit that
makes 200 hp on pump gas ona GA16 for 2600 bucks.
The Hotshot system costs more because it has a JWT ECU, and bigger
injectors. This gives superior power and reliablity.
Also the Eaton blower efficency falls of rapidly above 8-9 psi of boost so
overdriving it will not help very much and will greatly boost inlet air
temps. We recorded inlet air temps of over 320 degrees with the Eaton and
over 200 degrees under cruse with the bypass open.
The Eaton will be good for about 145-155 hp to the wheels on a GA with no
ECU control, no water injection at about 7 psi on pump gas, not 200 hp. More
than 7 psi will be a bomb without proper fuel managment. Granted this will
be nice torquy hp but it is far short of what you are saying.
The Hotshot turbo will make about 200 hp easy.
Mike
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