Nissan 370Z Forum
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Nissan 370Z Forum (http://www.the370z.com/)
-   Forced Induction (http://www.the370z.com/forced-induction/)
-   -   what parts are needed to increase boost for Stillen Supercharger (http://www.the370z.com/forced-induction/132700-what-parts-needed-increase-boost-stillen-supercharger.html)

"Z"en 12-29-2019 02:09 PM
Quote:
Originally Posted by nic370 (Post 3897688)
Here in uk its 99 octane
I believe that's like your 91

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It should be like 93 in the states.

nic370 12-29-2019 02:13 PM
Quote:
Originally Posted by "Z"en (Post 3897690)
It should be like 93 in the states.
Aghh ok

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redondoaveb 12-29-2019 02:22 PM
Quote:
Originally Posted by "Z"en (Post 3897689)
Single 520 paired with 1050 is way overkill for 91. Not good to run rich in low boost.
Yeah, if he's only going to run 91 then you're right they are overkill. If he switches to flex fuel then he would need them.

DUSHER 12-29-2019 02:35 PM
Quote:
Originally Posted by "Z"en (Post 3897689)
Single 520 paired with 1050 is way overkill for 91. Not good to run rich in low boost.
I'm just going with what Seb is recommending. With Seb's tune my afr doesnt look rich as well.

DUSHER 12-29-2019 02:41 PM
Quote:
Originally Posted by redondoaveb (Post 3897665)
13 psi is about the max you'll be able to run on 91 octane. With the 9lb pulley and a 2.85 sc pulley, my car made 12.86 psi and 586whp on e85 with the same upgrades that you have. I can't remember what my 91 octane numbers were but was probably a little over 500.

I would go flex fuel. 91 and e85.
as far as flex fuel/e85 would this be all I would need https://www.specialtyz.com/370z-g37/...-fuel-kit.html ? Also could you point me to a website where I could buy those pulleys at?

"Z"en 12-29-2019 02:46 PM
Quote:
Originally Posted by DUSHER (Post 3897698)
I'm just going with what Seb is recommending. With Seb's tune my afr doesnt look rich as well.
That might be bc of the way the base fuel pressure is being set. Twin pump is a better choice of staggered fuel pump setup for flex fuel tbh. Use the smaller one in low boost (or pure gas) and activate the bigger one to use both of them simutaneously in high boost (when running E).

"Z"en 12-29-2019 02:48 PM
Quote:
Originally Posted by DUSHER (Post 3897699)
as far as flex fuel/e85 would this be all I would need https://www.specialtyz.com/370z-g37/...-fuel-kit.html ? Also could you point me to a website where I could buy those pulleys at?
The kit shown seems to be for NA. Seb knows what kit suits you. There are options out there.

redondoaveb 12-29-2019 03:17 PM
Quote:
Originally Posted by DUSHER (Post 3897699)
as far as flex fuel/e85 would this be all I would need https://www.specialtyz.com/370z-g37/...-fuel-kit.html ? Also could you point me to a website where I could buy those pulleys at?
For flex fuel you will need the Zeitronix ECA-2. I'll find the links for the pulleys.

DUSHER 12-29-2019 03:21 PM
Quote:
Originally Posted by redondoaveb (Post 3897705)
For flex fuel you will need the Zeitronix ECA-2. I'll find the links for the pulleys.
Thanks for looking it up. https://www.specialtyz.com/zeitronix...and-gauge.html this the kit you're talking about?

redondoaveb 12-29-2019 03:22 PM
9lb pulley
https://conceptzperformance.com/stil...13_p_19055.php

redondoaveb 12-29-2019 03:25 PM
Supercharger pulley
8-Rib, 2.85 Vortech Improved Traction Supercharger Drive Pulley 8-Rib, 2.85 Vortech Improved Traction Supercharger Drive Pulley [V2A038-285] - $106.99 : SuperchargersOnline, Worlds largest Supercharger Resource. Get Serious About Power

turtle64b 12-29-2019 03:26 PM
You can also change up the Supercharger-side pulley ratio. Larger on the jackshaft, smaller on the supercharger. There's a small pulley thread in this topic that I started to try to break up the large Supercharger topics into sub-topics.

redondoaveb 12-29-2019 03:28 PM
Quote:
Originally Posted by DUSHER (Post 3897706)
Thanks for looking it up. https://www.specialtyz.com/zeitronix...and-gauge.html this the kit you're talking about?
Yes sir, that's it.

redondoaveb 12-29-2019 03:31 PM
Quote:
Originally Posted by turtle64b (Post 3897710)
You can also change up the Supercharger-side pulley ratio. Larger on the jackshaft, smaller on the supercharger. There's a small pulley thread in this topic that I started to try to break up the large Supercharger topics into sub-topics.
Yep, you can. I have a 3.47 jackshaft and a 3.00 sc. The problem with changing the jackshaft pulley is that you'll need to add a spacer to the sc pulley and idler pulley because the stock 3.2 jackshaft pulley is a different offset than the vortech pulley you'll be replacing it with.

redondoaveb 12-29-2019 03:35 PM
I forgot to add. If the sc pulley is changed to a 2.85 (with the jackshaft pulley remaining stock), then you'll need to change the tensioner pulley to a 3". That part # is Gates 36225.


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