Preparation for the STILLEN supercharger

Kyle@STILLEN · 03-10-2010, 12:27 AM

Quote:

Originally Posted by LiquidZ

I think it comes down to people becoming power hungry when they are exposed to boost. Giving a kit that produces great numbers out of the box is great, but giving people the ability to make big power when they are ready without changing major components, even better.

The same design philosophy is used by Greddy with their twin turbo kits.

It only took 66 pages but we've come full circle!

As we said in the very beginning of this thread one of the things we learned with our vq35 supercharger was that people might want really good low end power today but next year they generally want to bump up that power output. Which, as I said in the beginning, was something we kept in mind with this supercharger and one of the reasons we chose the vortech blower...it is very easy and inexpensive to add power later on.

Zsteve · 03-10-2010, 12:27 AM

Quote:

Originally Posted by LiquidZ

I think it comes down to people becoming power hungry when they are exposed to boost. Giving a kit that produces great numbers out of the box is great, but giving people the ability to make big power when they are ready without changing major components, even better.

The same design philosophy is used by Greddy with their twin turbo kits.

But I think he was meaning if you buy the under powered kit to later upgrade, then upgrade right away.

Kyle@STILLEN · 03-10-2010, 12:31 AM

By the way...this thing pulls HARD at low rpm! One of the things that steve reported during his test at el toro is how impressed he was with the throttle response at low rpm when he was accelerating out of the turns.

Zsteve · 03-10-2010, 12:35 AM

Quote:

Originally Posted by Kyle@STILLEN

By the way...this thing pulls HARD at low rpm! One of the things that steve reported during his test at el toro is how impressed he was with the throttle response at low rpm when he was accelerating out of the turns.

Sounds good but we need the new dyno, as of right now the one posted was a little low on the tq compared average wise, so we are waiting for the new one, soon?

RCZ · 03-10-2010, 12:45 AM

Quote:

Originally Posted by de_dust

i hope RCZ gets a GTM kit and do the review of the supercharger... and who ever is a GTM fan boy who is knowledgeable enough to do a review of the Stillen kit... hahaha

Love the name buddy. This is all I gotta say. b43, b13, b82, b84. lo3.

Quote:

Originally Posted by Zsteve

But I think he was meaning if you buy the under powered kit to later upgrade, then upgrade right away.

Many reasons such as a limited starting budged, wanting to build the motor later on, getting power hungry or maybe even wanting to detune from a higher staged kit. For me its simply just wanting more, I'm one of those guys who is rarely ever satisfied for long. Plus we all know you can never go fast enough..who are we kidding?

Zsteve · 03-10-2010, 12:50 AM

Quote:

Originally Posted by RCZ

Love the name buddy. This is all I gotta say. b43, b13, b82, b84. lo3.

Many reasons such as a limited starting budged, wanting to build the motor later on, getting power hungry or maybe even wanting to detune from a higher staged kit. For me its simply just wanting more, I'm one of those guys who is rarely ever satisfied for long. Plus we all know you can never go fast enough..who are we kidding?

But if you can spend up to 7K on the kit and labor then how much would it cost for the pully and all to get the kit into its max efficiency to begin with? I can see the advantage of being able to upgrade easy just cant see starting under its efficiency, but like you say everyone is different and do things differently. I just hope I can get my money from the Army soon so I can buy one of these kits.

Kyle@STILLEN · 03-10-2010, 12:59 AM

Quote:

Originally Posted by Zsteve

Sounds good but we need the new dyno, as of right now the one posted was a little low on the tq compared average wise, so we are waiting for the new one, soon?

The swap to the z is going very well. It's taking a little while longer than normal because our engineers are documenting the install for 370z specific instructions. The good news...the only difference between the two Kits is the fuel pump and one small bracket by the intake.

Kyle@STILLEN · 03-10-2010, 01:15 AM

Quote:

Originally Posted by Zsteve

But if you can spend up to 7K on the kit and labor then how much would it cost for the pully and all to get the kit into its max efficiency to begin with? I can see the advantage of being able to upgrade easy just cant see starting under its efficiency, but like you say everyone is different and do things differently. I just hope I can get my money from the Army soon so I can buy one of these kits.

I completely understand what you're saying but I don't think I've done a good enough job explaining it to you.

Let me think about how to properly write this so that it makes more sense to you.

Long explanation short...It's not that the blower is starting under its efficiency, there is a lot to take into consideration on this and I need to elaborate on that.

1slow370 · 03-10-2010, 06:06 AM

Quote:

Originally Posted by Zsteve

But if you can spend up to 7K on the kit and labor then how much would it cost for the pully and all to get the kit into its max efficiency to begin with? I can see the advantage of being able to upgrade easy just cant see starting under its efficiency, but like you say everyone is different and do things differently. I just hope I can get my money from the Army soon so I can buy one of these kits.

let me fix that it won't cost much for the pulley and a new tune to get the vortech into it's efficiency range the problem is can your stock engine handle 15-20 psi with over 700hp without going bang. thats why you start with small power on a big blower. then all you need to really spend cash on later is your engine instead of having to buy another 2500-3000 compressor (vortech pricing)

Edit: there now kyle can relax in the morning when he gets back on his computer. So the kit fit under our massive strut bar?

Buddy Revell · 03-10-2010, 09:20 AM

Quote:

Originally Posted by 1slow370

let me fix that it won't cost much for the pulley and a new tune to get the vortech into it's efficiency range the problem is can your stock engine handle 15-20 psi with over 700hp without going bang.

Yeah, given the tuning is solid, I wonder what the stock engine's limits are as far as how much boost it can take reliably on pump gas?

stormcrow · 03-10-2010, 09:42 AM

Quote:

Originally Posted by Buddy Revell

Yeah, given the tuning is solid, I wonder what the stock engine's limits are as far as how much boost it can take reliably on pump gas?

This is the Holy Grail of questions posed in every revision of the VQ as well as every other platform that is modifiable on the planet. The simple answer is - no one knows. We thought we knew with the DE after 2-3 years of development on it, but there was always the guy who lost a motor on 6psi which was considered safe and the guy who had 30+ passes at a drag strip on 14psi before the stock block let loose.

The honest truth is, when you force induct a car that wasn't engineered for this application, there is no true "reliable." You take a huge risk no matter what. I have heard it said many times - "Fast, cheap and reliable; you can only have two." I don't really believe you can have cheap and reliable, though.

Buddy Revell · 03-10-2010, 09:58 AM

Hmmm...hopefully there can at least be a ballpark figure, then. Another question I had was how much boost can one run on an engine with 11 to 1 comp ratio on 91 octane pump gas before detonation becomes a problem? How much more can you run on 93 octane pump gas?

fstrnldr · 03-10-2010, 09:59 AM

Quote:

Originally Posted by 1slow370

let me fix that it won't cost much for the pulley and a new tune to get the vortech into it's efficiency range the problem is can your stock engine handle 15-20 psi with over 700hp without going bang. thats why you start with small power on a big blower. then all you need to really spend cash on later is your engine instead of having to buy another 2500-3000 compressor (vortech pricing)

Edit: there now kyle can relax in the morning when he gets back on his computer. So the kit fit under our massive strut bar?

So the guy that just wants a mild HP upgrade and never wants to build the motor for high horse power just ends up with a blower that is out of the efficiency range? Why not offer another blower option? Makes more sense to me.

LiquidZ · 03-10-2010, 10:13 AM

Quote:

Originally Posted by fstrnldr

So the guy that just wants a mild HP upgrade and never wants to build the motor for high horse power just ends up with a blower that is out of the efficiency range? Why not offer another blower option? Makes more sense to me.

Assumimg Stillen uses the Si trim supercharger, the compressor map leads me to believe that this supercharger starts off with a high efficiency already. However, as you increase the boost and airflow with this unit, you still have excellent efficiency.

roplusbee · 03-10-2010, 10:16 AM

Those are all good thoughts/questions, but I doubt we will really have an answer until enought people take that plunge. I know I will at a point, but I am thinking that it may be a prerequisite to build for "safety" sake. As far as my budget goes, I would have to safe some more pennies to make that happen. This discussion has taken a turn for the better and hopefully those questions will be answered in time.

03-10-2010, 09:58 AM	#1002 (permalink)
Buddy Revell Enthusiast Member Join Date: Mar 2009 Location: So Cal Posts: 303 Drives: 08 Infiniti G37 Rep Power: 16	Hmmm...hopefully there can at least be a ballpark figure, then. Another question I had was how much boost can one run on an engine with 11 to 1 comp ratio on 91 octane pump gas before detonation becomes a problem? How much more can you run on 93 octane pump gas? __________________ '08 IP G37S/GTM Supercharger/20" DPE SP-5 Wheels/ARK GRIP Exhaust

03-10-2010, 10:16 AM	#1005 (permalink)
roplusbee A True Z Fanatic Join Date: Dec 2009 Location: Killeen, TX Posts: 2,360 Drives: 2007 350Z NISMO Rep Power: 22	Those are all good thoughts/questions, but I doubt we will really have an answer until enought people take that plunge. I know I will at a point, but I am thinking that it may be a prerequisite to build for "safety" sake. As far as my budget goes, I would have to safe some more pennies to make that happen. This discussion has taken a turn for the better and hopefully those questions will be answered in time. __________________ 2007 350Z NISMO #0618: Zerolift \| UPREV \| F.I. \| Greddy \| Competition Clutch \| Injector Dynamics \| Aeromotive \| Pioneer \| JL

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03-10-2010, 12:31 AM	#993 (permalink)
Kyle@STILLEN The370Z.com Sponsor Join Date: Dec 2008 Location: Newport Beach Posts: 626 Drives: Toyota Tundra Rep Power: 306	By the way...this thing pulls HARD at low rpm! One of the things that steve reported during his test at el toro is how impressed he was with the throttle response at low rpm when he was accelerating out of the turns.