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Discussion Starter #1
i need to know what would it cost for a turbo upgrade able to hold 18psi of BOOST? what kind of turbo? what specs should i ask for? do i need to change the manifold or get it ported and what should i get ported? also need to know were is the best place to get the turbo from? also what fuel upgrade should i do to my fuel system? put it this way i want my z to run like a rockect.
 

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Majestic Turbo (800-231-5566). Don't have the wrong concept about turbos. Just about any turbo will produce 18psi of boost, but will it provide any more lb/hr past a certain boost level. You should size your turbo for your desired hp level. I run 19psi on my 240z. I use the t3/t04e (57mm compressor wheel, stage 3 turbine with .63 a/r turbine housing) This turbo is for 400+ hp levels although you can run it at lower boost levels. You will definitely need bigger injectors. If you use a rising rate regulator to adjust fuel pressure, 440cc injectors will be fine. If you only plan to use the stock regulator, I would suggest 480cc injectors. You will need to intercool if you plan to run anything higher than 10 psi of boost. good luck

> i need to know what would it cost for a
> turbo upgrade able to hold 18psi of BOOST?
> what kind of turbo? what specs should i ask
> for? do i need to change the manifold or get
> it ported and what should i get ported? also
> need to know were is the best place to get
> the turbo from? also what fuel upgrade
> should i do to my fuel system? put it this
> way i want my z to run like a rockect.
 

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Joined
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270 Posts
Discussion Starter #3
> Majestic Turbo (800-231-5566). Don't
have
> the wrong concept about turbos. Just
about
> any turbo will produce 18psi of
boost, but
> will it provide any more lb/hr past
a
> certain boost level. You should size
your
> turbo for your desired hp level. I
run 19psi
> on my 240z. I use the t3/t04e (57mm
> compressor wheel, stage 3 turbine
with .63
> a/r turbine housing) This turbo is
for 400+
> hp levels although you can run it at
lower
> boost levels. You will definitely
need
> bigger injectors. If you use a
rising rate
> regulator to adjust fuel pressure,
440cc
> injectors will be fine. If you only
plan to
> use the stock regulator, I would
suggest
> 480cc injectors. You will need to
intercool
> if you plan to run anything higher
than 10
> psi of boost. good luck

now do i have to change my stock
exhaust manifold to use a T3/T04e
turbo or do any porting work?
 

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you currently have a full t3 unit, meaning the turbine and compressor side are from a t3 turbo. When you go to the hybrid the turbine side will remain a t3 unit and this is the part that bolts to the manifold. The compressor side will be changed to the t04 unit. The compressor dictates the density of the charge and is expressed in lb/hr. they use to widely rate turbos according to cfm. Anyway, you will want to port the turbo if there is a overhanging lip going into the turbo. Let me try to make this more clear. If the opening to the turbo doesn't match the opening on the manifold you might have to port the turbo. It is ok if the turbo opening is bigger than the manifold opening. But if the turbo opening is smaller than the manifold opening there will be a lip that the exhaust must pass over and is very obstructive to flow. You will need to grind down the turbo port until the ports match. If you really didn't care about ultimate performance you could just bolt the **** thing on and not worry about flow obstructioin. Also, the stage 3 turbine does require some mods to be made. I had to put longer studs into the manifold because the turbo flange was thicker. And the T04E unit requires some minor mods as well. I had to shim out the turbo from the manifold by 3/16 because the compressor housing was hitting the exhaust manifold. I also had to do some grinding on the compressor housing to make it fit. If you want to avoid making a shim and grinding, you can choose the T04B instead of the T04E for the compressor side.

> have
> about
> boost, but
> a
> your
> run 19psi
> with .63
> for 400+
> lower
> need
> rising rate
> 440cc
> plan to
> suggest
> intercool
> than 10

> now do i have to change my stock
> exhaust manifold to use a T3/T04e
> turbo or do any porting work?
 

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Discussion Starter #5
> you currently have a full t3 unit, meaning
> the turbine and compressor side are from a
> t3 turbo. When you go to the hybrid the
> turbine side will remain a t3 unit and this
> is the part that bolts to the manifold. The
> compressor side will be changed to the t04
> unit. The compressor dictates the density of
> the charge and is expressed in lb/hr. they
> use to widely rate turbos according to cfm.
> Anyway, you will want to port the turbo if
> there is a overhanging lip going into the
> turbo. Let me try to make this more clear.
> If the opening to the turbo doesn't match
> the opening on the manifold you might have
> to port the turbo. It is ok if the turbo
> opening is bigger than the manifold opening.
> But if the turbo opening is smaller than the
> manifold opening there will be a lip that
> the exhaust must pass over and is very
> obstructive to flow. You will need to grind
> down the turbo port until the ports match.
> If you really didn't care about ultimate
> performance you could just bolt the ****
> thing on and not worry about flow
> obstructioin. Also, the stage 3 turbine does
> require some mods to be made. I had to put
> longer studs into the manifold because the
> turbo flange was thicker. And the T04E unit
> requires some minor mods as well. I had to
> shim out the turbo from the manifold by
> 3/16 because the compressor housing
> was hitting the exhaust manifold. I also had
> to do some grinding on the compressor
> housing to make it fit. If you want to avoid
> making a shim and grinding, you can choose
> the T04B instead of the T04E for the
> compressor side.

thanks when i get it together and put it on my car will sure to let you know how it run i have a 3.9:1 diff already in it soooo watch out ready to launch.
 

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Actually the 3.9 diff is not that great for turbo cars. You want to build load in the motor so to make more boost. I currently have a 3.36 in my turbo car and whip the shi# out of everthing. You will want to run a 3.54 or at the most 3.70. You might get the initial hole shot with your 3.9, but I can assure you that you will get eaten up down the road. When I ran the 3.54 I could make 14 psi of boost in 1st gear and when I went to the 3.36, I could make 17 psi of boost in 1st gear. I raced a buddy of mine who has a turbo car with the 3.9. He would get a slight edge in 1st gear, but by the time we hit 3rd I was pulling away with no problem, just some things to consider.

> thanks when i get it together and put it on
> my car will sure to let you know how it run
> i have a 3.9:1 diff already in it soooo
> watch out ready to launch.
 
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