3.8L gt stoker kit and GT4788R?
This trackpack guy is awesome. He gets his feelings hurt in the FI section and then posts pictures of a sweet built civic to impress.... Well I dont know what he was trying to accomplish with that, really.
You will fit in here like an alcoholic teenager at a MADD meeting.
You will fit in here like an alcoholic teenager at a MADD meeting.
^
LOLZ
Maybe so, but TrackPack brings up some valid points. It is possible to have a streetable high horsepower car with the right sized turbo selection, depending on what your personal definition/preference of acceptable lag is.
Guys have been running streetable DD 750whp Supras for a while. So I don't see why it can't be accomplished with the Z/G, especially since the VQ has an extra .5L of displacement and better flowing heads.
Bottom line: The GT47R stated in the OP's post is way too big for his stated power goals and intended use. If he was building a pure drag car that will never be driven on the streets, I'd say go for it. Injected Performance has had great success with it.
LOLZ Maybe so, but TrackPack brings up some valid points. It is possible to have a streetable high horsepower car with the right sized turbo selection, depending on what your personal definition/preference of acceptable lag is.
Guys have been running streetable DD 750whp Supras for a while. So I don't see why it can't be accomplished with the Z/G, especially since the VQ has an extra .5L of displacement and better flowing heads.
Bottom line: The GT47R stated in the OP's post is way too big for his stated power goals and intended use. If he was building a pure drag car that will never be driven on the streets, I'd say go for it. Injected Performance has had great success with it.
Well, it's one thing to say that you wouldn't choose a single 62mm turbo for your own setup. But to call it a joke is another thing all together. The Precision billet 62 puts out GT37R power (700whp) with GT35R-like spool. So are you implying that the turbo selection(s) for PowerLab kit are a joke???
IMO picking a turbo depends as much on the application of the car. (OP a GT47R ,just like everything for the right money, is doable but with lag too horrible even for me to take it on the street)
Rude is getting one that is able to have excellent spool time with excellent top end performance as well, without having to go with a twin system. IMO he will have an easier time getting traction putting 700hp G running same power on twins. Rude is a fan of pushing the envelope just like you tyler, which is why he is looking break records with his G.
At 650whp he should still be able to put serious 1.4 mile as well as use his G for circuit racing.
I am sure he could put a gt42r and an th400 but that wouldn't be too "streatable".
Last edited by IIQuickSilverII; Nov 3, 2008 at 12:16 PM.
Well, it's one thing to say that you wouldn't choose a single 62mm turbo for your own setup. But to call it a joke is another thing all together. The Precision billet 62 puts out GT37R power (700whp) with GT35R-like spool. So are you implying that the turbo selection(s) for PowerLab kit are a joke???
It makes way more sense to step your game up to a larger turbo that will a)make more power per psi, b) make more power on a given octane rating, c) create less heat, d) be a better match for the engine all together.
Run a 62 if that is your hearts content. Most of this community is numb to what make sense anyways. I personally feel that the powerlab 76mm kit is the correct turbo for anyone looking to make 700rwhp+. I would also rather trade some lag instead of pushing a small turbo to make the power of the big one.
Last edited by thawk408; Nov 3, 2008 at 01:51 PM.
I didn't say the billet 62mm was the best choice for making over 700whp. The billet 62 wouldn't meet the OP's goal of 750whp anyway (which is why I suggested the 76S several posts back). But for a built setup pushing 600-700whp, it's a nice turbo with good response and a usable powerband that doesn't make the car a one-dimensional drag car or dyno queen. To say that a single 62mm is a joke and a poor match for the 3.5L is laughable. It all depends on what your intended use is.
FWIW... When I plan on making more than 700whp in the future, I intend to go with something larger like a billet 76 or a 78H, etc. etc.
Last edited by RudeG_v2.0; Nov 3, 2008 at 02:01 PM.
Tyler you know i agree with the bigger turbo setup, and also laugh at the people that worry too much about lag and get pussified too easily on the board.
how ever there are a few facts to consider
a) 98% of the builds are on stock blocks pushing about 400whp so going to 650whp on a gt35r that still gives lots of rooms for avg fans building vqs
b) you are pointing to boost/hp, but boost pressure has nothing to do with the head lift, cylinder pressure does. I.E., you could run 21psi and only make 400whp and never have a problem
c) reliability of car from a turbo it out the box that starts 700whp and up, no secret its harder to maintain and how expensive it would be considering that to put such numbers on the street would require the use of expensive fuel solutions.
d) space in the VQ is limited, to put a turbo kit that is 1000whp ready isnt very easy and requires a custom work so its 1-offs in house builds for the most part.
e) i think as much as i love big singles, streatability and decent spool time specially for track applications is important, so it depends.
f) piping of the powerlab kit out the box should be good to max out up to 900hp if not more however as mentioned spaced is limited to put a bigger turbo. and gt35r and gt37r offer a more streatable option for what most people will look for. how much you plan on driving daily btw?
g) i too wish people would get off the idea that 500hp is enough and its all you have to plan for...but if the car will see 550-600 on the street most of the time, no reason to put a turbo rated for 1400hp when it offers sub par responsiveness at 8psi..the gt37r put solid numbers at 6psi than any other st kit for the Z.
h) keep in mind too that rude is running an AT application and doesnt wish to put that dog th400...this changes things a bit. As as i said, i dont think he plans on hitting 1/4 mile only.
how ever there are a few facts to consider
a) 98% of the builds are on stock blocks pushing about 400whp so going to 650whp on a gt35r that still gives lots of rooms for avg fans building vqs
b) you are pointing to boost/hp, but boost pressure has nothing to do with the head lift, cylinder pressure does. I.E., you could run 21psi and only make 400whp and never have a problem
c) reliability of car from a turbo it out the box that starts 700whp and up, no secret its harder to maintain and how expensive it would be considering that to put such numbers on the street would require the use of expensive fuel solutions.
d) space in the VQ is limited, to put a turbo kit that is 1000whp ready isnt very easy and requires a custom work so its 1-offs in house builds for the most part.
e) i think as much as i love big singles, streatability and decent spool time specially for track applications is important, so it depends.
f) piping of the powerlab kit out the box should be good to max out up to 900hp if not more however as mentioned spaced is limited to put a bigger turbo. and gt35r and gt37r offer a more streatable option for what most people will look for. how much you plan on driving daily btw?
g) i too wish people would get off the idea that 500hp is enough and its all you have to plan for...but if the car will see 550-600 on the street most of the time, no reason to put a turbo rated for 1400hp when it offers sub par responsiveness at 8psi..the gt37r put solid numbers at 6psi than any other st kit for the Z.
h) keep in mind too that rude is running an AT application and doesnt wish to put that dog th400...this changes things a bit. As as i said, i dont think he plans on hitting 1/4 mile only.
Last edited by IIQuickSilverII; Nov 3, 2008 at 02:10 PM.
Tyler you know i agree with the bigger turbo setup, and also laugh at the people that worry too much about lag and get pussified too easily on the board.
how ever there are a few facts to consider
a) 98% of the builds are on stock blocks pushing about 400whp so going to 650whp on a gt35r that still gives lots of rooms for avg fans building vqs
For stock block sure, its a good choice. But this thread is nothing about stock block, as the OP stated he wants 700+
b) you are pointing to boost/hp, but boost pressure has nothing to do with the head lift, cylinder pressure does. I.E., you could run 21psi and only make 400whp and never have a problem
I honestly dont see what your trying to say, and I never mentioned anything about headlift, nor think headlift is a issue with a properly built engine. 25psi through a 35r and 25psi through a 42r, the 42r will give you more power, its just how it goes. As boost is just a reference and CFM is what plays a big role.
c) reliability of car from a turbo it out the box that starts 700whp and up, no secret its harder to maintain and how expensive it would be considering that to put such numbers on the street would require the use of expensive fuel solutions.
The powerlab 37r is capable of 700whp, just not the greatest powerband if you ask me. The fuel for either a 37r car at 700whp and a 42r car at 700whp is going to be very similar, if not the same. Dont see where you going here either, if both kits are capable of 700whp, just the bigger turbo being mroe effiecent.
d) space in the VQ is limited, to put a turbo kit that is 1000whp ready isnt very easy and requires a custom work so its 1-offs in house builds for the most part.
I do agree that yes space is a pain on these cars for big singles, but is powerlab not planning to sell the 76 kit? They have shown that it can be done
e) i think as much as i love big singles, streatability and decent spool time specially for track applications is important, so it depends.
Yes it depends on powerlevels, but a 76mm really isnt that big for a 3.5.
f) piping of the powerlab kit out the box should be good to max out up to 900hp if not more however as mentioned spaced is limited to put a bigger turbo. and gt35r and gt37r offer a more streatable option for what most people will look for. how much you plan on driving daily btw?
For the simple stock block/basic build user then yes the smaller turbos will be fine since they will probably never see 20+psi. Guess I look at power alittle different, being use to being around actually fast cars. I have full confidence that I could DD my car no problem. I wont tho, due to not wanting to put the miles on her like that.
g) i too wish people would get off the idea that 500hp is enough and its all you have to plan for...but if the car will see 550-600 on the street most of the time, no reason to put a turbo rated for 1400hp when it offers sub par responsiveness at 8psi..the gt37r put solid numbers at 6psi than any other st kit for the Z.
I agree that a gt47 is retarded for the OP or for most everyone on this forum. If I wasnt going big twins I would be trying to put a 4788/5591 somehwere
. Again I have no desire to run a turbo at 6psi, so again I have a different understanding of "fast"
h) keep in mind too that rude is running an AT application and doesnt wish to put that dog th400...this changes things a bit. As as i said, i dont think he plans on hitting 1/4 mile only.
The auto puts things into perspective now. Sucks they cant handle more then they could. With being an auto I fully understand his reasoning now. There is always a 6speed swap tho
.
how ever there are a few facts to consider
a) 98% of the builds are on stock blocks pushing about 400whp so going to 650whp on a gt35r that still gives lots of rooms for avg fans building vqs
For stock block sure, its a good choice. But this thread is nothing about stock block, as the OP stated he wants 700+
b) you are pointing to boost/hp, but boost pressure has nothing to do with the head lift, cylinder pressure does. I.E., you could run 21psi and only make 400whp and never have a problem
I honestly dont see what your trying to say, and I never mentioned anything about headlift, nor think headlift is a issue with a properly built engine. 25psi through a 35r and 25psi through a 42r, the 42r will give you more power, its just how it goes. As boost is just a reference and CFM is what plays a big role.
c) reliability of car from a turbo it out the box that starts 700whp and up, no secret its harder to maintain and how expensive it would be considering that to put such numbers on the street would require the use of expensive fuel solutions.
The powerlab 37r is capable of 700whp, just not the greatest powerband if you ask me. The fuel for either a 37r car at 700whp and a 42r car at 700whp is going to be very similar, if not the same. Dont see where you going here either, if both kits are capable of 700whp, just the bigger turbo being mroe effiecent.
d) space in the VQ is limited, to put a turbo kit that is 1000whp ready isnt very easy and requires a custom work so its 1-offs in house builds for the most part.
I do agree that yes space is a pain on these cars for big singles, but is powerlab not planning to sell the 76 kit? They have shown that it can be done
e) i think as much as i love big singles, streatability and decent spool time specially for track applications is important, so it depends.
Yes it depends on powerlevels, but a 76mm really isnt that big for a 3.5.
f) piping of the powerlab kit out the box should be good to max out up to 900hp if not more however as mentioned spaced is limited to put a bigger turbo. and gt35r and gt37r offer a more streatable option for what most people will look for. how much you plan on driving daily btw?
For the simple stock block/basic build user then yes the smaller turbos will be fine since they will probably never see 20+psi. Guess I look at power alittle different, being use to being around actually fast cars. I have full confidence that I could DD my car no problem. I wont tho, due to not wanting to put the miles on her like that.
g) i too wish people would get off the idea that 500hp is enough and its all you have to plan for...but if the car will see 550-600 on the street most of the time, no reason to put a turbo rated for 1400hp when it offers sub par responsiveness at 8psi..the gt37r put solid numbers at 6psi than any other st kit for the Z.
I agree that a gt47 is retarded for the OP or for most everyone on this forum. If I wasnt going big twins I would be trying to put a 4788/5591 somehwere
. Again I have no desire to run a turbo at 6psi, so again I have a different understanding of "fast"h) keep in mind too that rude is running an AT application and doesnt wish to put that dog th400...this changes things a bit. As as i said, i dont think he plans on hitting 1/4 mile only.
The auto puts things into perspective now. Sucks they cant handle more then they could. With being an auto I fully understand his reasoning now. There is always a 6speed swap tho
.Last edited by thawk408; Nov 3, 2008 at 03:54 PM.
This trackpack guy is awesome. He gets his feelings hurt in the FI section and then posts pictures of a sweet built civic to impress.... Well I dont know what he was trying to accomplish with that, really.
You will fit in here like an alcoholic teenager at a MADD meeting.
You will fit in here like an alcoholic teenager at a MADD meeting.
I never posted anything to impress anyone, thats the last thing on my mind, they are just simple builds of bigger turbos on smaller displacement that I have had direct involvement with.
As far as my feelings hurt, not on a forum.
Keep up the good work tough guy!
LOL No hurt feelings here.
I didn't say the billet 62mm was the best choice for making over 700whp. The billet 62 wouldn't meet the OP's goal of 750whp anyway (which is why I suggested the 76S several posts back). But for a built setup pushing 600-700whp, it's a nice turbo with good response and a usable powerband that doesn't make the car a one-dimensional drag car or dyno queen. To say that a single 62mm is a joke and a poor match for the 3.5L is laughable. It all depends on what your intended use is.
FWIW... When I plan on making more than 700whp in the future, I intend to go with something larger like a billet 76 or a 78H, etc. etc.
I didn't say the billet 62mm was the best choice for making over 700whp. The billet 62 wouldn't meet the OP's goal of 750whp anyway (which is why I suggested the 76S several posts back). But for a built setup pushing 600-700whp, it's a nice turbo with good response and a usable powerband that doesn't make the car a one-dimensional drag car or dyno queen. To say that a single 62mm is a joke and a poor match for the 3.5L is laughable. It all depends on what your intended use is.
FWIW... When I plan on making more than 700whp in the future, I intend to go with something larger like a billet 76 or a 78H, etc. etc.
