ok, right i've always wondered this.

 

 

Lets go on the assumption you all the right parts to make 800 hp for example but...

 

Lets say you have 2 turbos both rated at say 250bhp

 

Does that mean the most you could get out of your car is 500hp?

 

Or is it possible to get more out of it? with the additional mods.

 

What would these be? like keeping the turbos cooler? heat wrap? exhaust to help the flow better? Nos? water meth?

 

The figures above are just for example. what's i've always wondered is with a turbo car if the turbos are listed to make ex amount of bhp can you get anymore out of the car with the right mods??

well if you take the turbos off you have about a 200bhp engine sooo does the power increase incrementally eg 200+250 max+250 max= 700 LOL

your never going to get the maximum rated out of a turbo as there calculated on a test bench in perfect flow conditions.

 

remember the zed is like having 2 x 1.5ltr engines running each turbo so you dont have that much dispacement to spool and make the power of say a 3 ltr supra with a single turbo.

 

i would say additional mods will help you get closer to the rated power, things like cams and everything to make the car breath and flow better will make you alot more power :)

 

Mike

your never going to get the maximum rated out of a turbo as there calculated on a test bench in perfect flow conditions.

 

remember the zed is like having 2 x 1.5ltr engines running each turbo so you dont have that much dispacement to spool and make the power of say a 3 ltr supra with a single turbo.

 

i would say additional mods will help you get closer to the rated power, things like cams and everything to make the car breath and flow better will make you alot more power :)

 

Mike

 

so ideally if it was possible eg without the space restrictions of the engine bay a single turbo setup would be much more benificial as the output of all 6 cylinders would be spooling the turbo?

so ideally if it was possible eg without the space restrictions of the engine bay a single turbo setup would be much more benificial as the output of all 6 cylinders would be spooling the turbo?

 

from working with supras and skylines i would say yes, you can get pretty small single setups on a supra which spool up at around 2000 revs which is lower than a oem zed and make over 500rwhp ;)

 

also you only have one of everything so its cheaper if something goes wrong :)

well if you take the turbos off you have about a 200bhp engine sooo does the power increase incrementally eg 200+250 max+250 max= 700 LOL

 

I don't know if it works like that.

your never going to get the maximum rated out of a turbo as there calculated on a test bench in perfect flow conditions.

 

remember the zed is like having 2 x 1.5ltr engines running each turbo so you dont have that much dispacement to spool and make the power of say a 3 ltr supra with a single turbo.

 

i would say additional mods will help you get closer to the rated power, things like cams and everything to make the car breath and flow better will make you alot more power :)

 

Mike

 

Oh right, i think i should have everything to get the most out of the turbos.

Think i didn't word my question very well.

 

What i mean is.

 

Lets say my turbos are rated to make 500bhp between them. Would it be possible to make 600bhp. What i mean is if you have turbos rated at x amount of bhp could your car ever make any more than that bhp? even with the aids of nos or say water meth etc.

 

Reason i ask is because my turbos i have are rated at X amount each and i want to know moving forward if i wanted more bhp would i be able to do it with the turbos i have?

Depends how conservatively the turbos are rated and if they're quoting bhp or rwhp.Other than that, as Kirbz says, you won't get much but hot air after that.

 

Nos will add power.

water/meth will let you get closer to max power.

Depends how conservatively the turbos are rated and if they're quoting bhp or rwhp.Other than that, as Kirbz says, you won't get much but hot air after that.

 

Nos will add power.

water/meth will let you get closer to max power.

 

 

Ok think i get it.

 

So it's hard to get the quoted bhp the manufacture quotes for the turbos.

 

Lets say you have all the mods and you got very close.

 

Only thing that would push you past the quoted figures would be Nos.

 

Lets say the turbos maxed out on a dyno at 500bhp. would a 100 shot of Nos take me to 600bhp?

The following will give you more bhp over standard car. Bigger turbos won't increase power without other mods as the standard ecu opens the actuator at about 9psi, so on their own won't increase power.

to get the most out of the turbos you need:

Bigger injectors to add more fuel

Bigger intercoolers to let more denser air through

dual maf to double air throughput

bigger throttle bodies and piping from the maf

ecu to allow higher psi

ported heads to allow better airflow

that is intake side, for the exhaust side

split downpipes

free flowing decatted exhaust system, not too big a bore or the turbo seals won't last to long

and ported manifolds

 

mechanicaly you can do the following which will help power and nothing to do with turbos.

under drive crank pully

lightened crank

high lift cams

lightened flywheel

lighteded pistons, rods

and bored out to 3.1 L ( i thnk that is limit ) this helps turbos as well though. More air/fuel can be sucked in for a bigger bang, more power.

 

If you just want faster acceleration, you can change the diff gearing to na diff or Richmond leader gears whihc i think give same gear ratio as na. Then you can strip it down, put it on a diet and loose weight. I noticed something the other day while looking for wiring for 3rd brake light, removed the trim on the hatch and there was a big chunk of metal screwed to the car. I can onlt assume it is a couterweight to help the hatch drop down. Bet that weighs at least a kilo.

 

As for nos, i didn't think that give top end power on a Z? I thought it came on at low rpm while the turbos spooled up then shut off when the turbos started boosting. Or can you do both ?

 

This isn't a difinitive list, please feel free to add or correct me.

 

Scott

The following will give you more bhp over standard car. Bigger turbos won't increase power without other mods as the standard ecu opens the actuator at about 9psi, so on their own won't increase power.

to get the most out of the turbos you need:

Bigger injectors to add more fuel

Bigger intercoolers to let more denser air through

dual maf to double air throughput

bigger throttle bodies and piping from the maf

ecu to allow higher psi

ported heads to allow better airflow

that is intake side, for the exhaust side

split downpipes

free flowing decatted exhaust system, not too big a bore or the turbo seals won't last to long

and ported manifolds

 

mechanicaly you can do the following which will help power and nothing to do with turbos.

under drive crank pully

lightened crank

high lift cams

lightened flywheel

lighteded pistons, rods

and bored out to 3.1 L ( i thnk that is limit ) this helps turbos as well though. More air/fuel can be sucked in for a bigger bang, more power.

 

If you just want faster acceleration, you can change the diff gearing to na diff or Richmond leader gears whihc i think give same gear ratio as na. Then you can strip it down, put it on a diet and loose weight. I noticed something the other day while looking for wiring for 3rd brake light, removed the trim on the hatch and there was a big chunk of metal screwed to the car. I can onlt assume it is a couterweight to help the hatch drop down. Bet that weighs at least a kilo.

 

As for nos, i didn't think that give top end power on a Z? I thought it came on at low rpm while the turbos spooled up then shut off when the turbos started boosting. Or can you do both ?

 

This isn't a difinitive list, please feel free to add or correct me.

 

Scott

 

Yeap done all that. pretty much.

 

I was wondering if you could get more out of a car than the quoted bhp figures the turbos manufactures produce.

I can't see how they can produce a bhp figure. Every car is different. You might get 250 bhp out of them but i might only get 230 bhp. It all depends on the mods done. And turbo manufactures do go buying cars and adding every possible mod to them. They normally indicate a max psi they can produce before it becomes hot air and useless. when i got my turbos they said they'd produce about 22/23 psi, didn't say they'd produce 250bhp.

edit: And turbo manufactures do not go buying cars