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-   -   Another possible turbo option? (http://www.the370z.com/forced-induction/59896-another-possible-turbo-option.html)

CSA0890 09-03-2012 12:57 AM

Quote:

Originally Posted by Fabio88 (Post 1899437)
Im not at 700 rwhp I said I will be soon its a project please read.

He knows that he was making a joke that everyone but you sees. You are going to have to put such a large turbo to get 700hp out of it that it wont spool till 6k+. So it will be a dyno queen at best.

Fabio88 09-03-2012 01:01 AM

Quote:

Originally Posted by CSA0890 (Post 1899483)
He knows that he was making a joke that everyone but you sees. You are going to have to put such a large turbo to get 700hp out of it that it wont spool till 6k+. So it will be a dyno queen at best.

well we will see I hope to get it.

Red__Zed 09-03-2012 07:06 AM

Quote:

Originally Posted by Isamu (Post 1898288)
right now I am making 508whp, and 404wtq. the goal is to get the torque more inline with the hp.
I don't know if you have seen my dyno sheet, but the curve is very smooth, and the car drives almost like stock before boost. I know Marti wants to keep that same feel, but deliver more torque.... and for me, more power

trying to bring tq up to match power is better done with gearing, rather than swapping out your kit.

All you are doing to bring them closer is moving the powerband down, based on the definition of HP/TQ. You can do (effectively) the same thing by shortening the rear gear.

If you shorten the rear gear to 4.64 (really short), you'd get effectively the same feel as if you'd kept the stock rear gear, and had 508tq. Of course, you wouldn't want to go that short, but you get the point. You've got enough in the way of CR gears that you should be able to get away with something pretty short for track use.

Trying to fix your problem with a turbo kit means you are trying to improve the piping issues, and having to run a more expensive turbo with a broader efficiency curve. While it would be nice to have those things, I can't imagine going from one single to another, especially before you identify your real issues on track.

elperuano 09-03-2012 02:00 PM

Quote:

Originally Posted by Red__Zed (Post 1899597)
trying to bring tq up to match power is better done with gearing, rather than swapping out your kit.

All you are doing to bring them closer is moving the powerband down, based on the definition of HP/TQ. You can do (effectively) the same thing by shortening the rear gear.

If you shorten the rear gear to 4.64 (really short), you'd get effectively the same feel as if you'd kept the stock rear gear, and had 508tq. Of course, you wouldn't want to go that short, but you get the point. You've got enough in the way of CR gears that you should be able to get away with something pretty short for track use.

Trying to fix your problem with a turbo kit means you are trying to improve the piping issues, and having to run a more expensive turbo with a broader efficiency curve. While it would be nice to have those things, I can't imagine going from one single to another, especially before you identify your real issues on track.

Well said!

Isamu 09-04-2012 04:51 PM

Well said Dan,

I think what I took as increase in torque only was really to increase efficiency, which the increased torque will be a byproduct

Marti 09-04-2012 05:23 PM

this thread has doubled since i last looked at it..... yikes. hahaha

This is the compressor we'd be using... .
https://sphotos-a.xx.fbcdn.net/hphot...66269779_n.jpg

Isamu 09-04-2012 07:10 PM

Quote:

Originally Posted by Marti (Post 1901454)
this thread has doubled since i last looked at it..... yikes. hahaha

This is the compressor we'd be using... .
https://sphotos-a.xx.fbcdn.net/hphot...66269779_n.jpg

:yum:

Boosted Performance 09-04-2012 09:37 PM

You can use whatever turbo(s) you want, but this engine will not make the torque most people are used to seeing with the VQ35de's. Not to mention that things have not been pushed hard since there are only a few people with built engines.

Nismodean 09-04-2012 09:40 PM

For a view that isn't as close up I sneaked in and took this. Might have a fitment issue but once that's resolved I think torque should increase a tad.

http://www.mmsystems.org/Images/Phot...r_tl430h01.jpg

Marti 09-04-2012 09:48 PM

Quote:

Originally Posted by Boosted Performance (Post 1901764)
You can use whatever turbo(s) you want, but this engine will not make the torque most people are used to seeing with the VQ35de's. Not to mention that things have not been pushed hard since there are only a few people with built engines.

We'll be overhauling Tim's setup with a built motor at some point in the future but with other back to back testing that we've done with similarly spec'd turbochargers, im confident that we will see a noticeable gain in torque and a widening of the power band.

Quote:

Originally Posted by Nismodean (Post 1901768)
For a view that isn't as close up I sneaked in and took this. Might have a fitment issue but once that's resolved I think torque should increase a tad.

http://www.mmsystems.org/Images/Phot...r_tl430h01.jpg

I see you snuck a camera into our shop, huh? :p

XwChriswX 09-04-2012 09:52 PM

Quote:

Originally Posted by Marti (Post 1901786)
We'll be overhauling Tim's setup with a built motor at some point in the future but with other back to back testing that we've done with similarly spec'd turbochargers, im confident that we will see a noticeable gain in torque and a widening of the power band.

Aside from the bonus' of a built motor, where do you think the choke points are on the current setup? i.e. what are you looking to change and evaluate?

Boosted Performance 09-04-2012 10:56 PM

Quote:

Originally Posted by Marti (Post 1901786)
We'll be overhauling Tim's setup with a built motor at some point in the future but with other back to back testing that we've done with similarly spec'd turbochargers, im confident that we will see a noticeable gain in torque and a widening of the power band.

In the end a turbo is a turbo. Yes the new billet wheels are a bit better, and the turbine wheels are also improving, but in the end the idea is to deliver air/boost to the engine. You just can't make old school V8 torque with a modern high revving V6 which was designed to make top end HP.

Even the twin scroll (most efficient turbo configurations due to superior scavenging) reached maximum torque and simply stayed there all the way to redline, much like an N/A engine. Just my experience with these engines I guess.

Marti 09-10-2012 09:55 AM

Quote:

Originally Posted by Boosted Performance (Post 1901927)
In the end a turbo is a turbo. Yes the new billet wheels are a bit better, and the turbine wheels are also improving, but in the end the idea is to deliver air/boost to the engine. You just can't make old school V8 torque with a modern high revving V6 which was designed to make top end HP.

Even the twin scroll (most efficient turbo configurations due to superior scavenging) reached maximum torque and simply stayed there all the way to redline, much like an N/A engine. Just my experience with these engines I guess.

All Turbos aren't equals. A turbo isn't just a turbo. No one would expect to see the same results from a 6266 or a BW S300SX compared to say a similarly sized Turbonetics or shelf Garrett unit that technically "measures out" the same. There are a lot of advancements in wheel designs, housings and more. Actually enough to an extent that people are upgrading similarly turbochargers for redesigned units.

I'm not trying to reinvent the wheel here, just make it turn faster through other options and little things I've picked up through out my time with the platform. :tup:

Isamu 09-10-2012 09:58 AM

Quote:

Originally Posted by Marti (Post 1909687)
All Turbos aren't equals. A turbo isn't just a turbo. No one would expect to see the same results from a 6266 or a BW S300SX compared to say a similarly sized Turbonetics or shelf Garrett unit that technically "measures out" the same. There are a lot of advancements in wheel designs, housings and more. Actually enough to an extent that people are upgrading similarly turbochargers for redesigned units.

I'm not trying to reinvent the wheel here, just make it turn faster through other options and little things I've picked up through out my time with the platform. :tup:

:tup:


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