GTM Performance Engineering stage 2 600hp supercharger kits line-up press release

Turbobob

Not so fast.


The most common type of octane rating worldwide is the Research Octane Number (RON). RON is determined by running the fuel in a test engine with a variable compression ratio under controlled conditions, and comparing the results with those for mixtures of iso-octane and n-heptane.

There is another type of octane rating, called Motor Octane Number (MON), or the aviation lean octane rating, which is a better measure of how the fuel behaves when under load, as it is determined at 900 rpm engine speed, instead of the 600 rpm for RON. MON testing uses a similar test engine to that used in RON testing, but with a preheated fuel mixture, higher engine speed, and variable ignition timing to further stress the fuel's knock resistance. Depending on the composition of the fuel, the MON of a modern gasoline will be about 8 to 10 points lower than the RON, however there is no direct link between RON and MON. Normally, fuel specifications require both a minimum RON and a minimum MON

In most countries, including Australia and all of those in Europe, the "headline" octane rating shown on the pump is the RON, but in Canada, the United States and some other countries, like Brazil, the headline number is the average of the RON and the MON, called the Anti-Knock Index (AKI, and often written on pumps as (R+M)/2). It may also sometimes be called the Pump Octane Number (PON).


Because of the 8 to 10 point difference noted above, the octane rating shown in the United States is 4 to 5 points lower than the rating shown elsewhere in the world for the same fuel.

I have 93 octane here in Missouri based on the (R+M)/2. This would likely be the equivalent to the 98 octane in Australia based on the RON rating.

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I'm older so I drive fast as I have less time left to waste.

Ron

I thought they used the same rating. That is an awesome first post! Thanks Turbobob. +1

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2011 Twin Turbo PW nismo #113 - My Journal - My TT Build Thread
[ GTM GTX Stg2 TT || HKS EVC6 || Custom CarPC || F.I 3'' TDX CBE || SB 6puck clutch/ZSpeed CSC || BC BR Coilovers || SPC camber arms || Work VSS-X || Custom Headlights || PW:JDM CF Covers || Seibon CF Engine Cover ]

Turbobob

Thanks. I haven't posted here as I have a 2007 350Z and am active on the 350Z forums. I started hanging out here because I am interested in getting a GTM SC for my car and it is similar to the one they make for the VQ35HR.

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I'm older so I drive fast as I have less time left to waste.

Ron

The more the merrier. Welcome!

__________________
2011 Twin Turbo PW nismo #113 - My Journal - My TT Build Thread
[ GTM GTX Stg2 TT || HKS EVC6 || Custom CarPC || F.I 3'' TDX CBE || SB 6puck clutch/ZSpeed CSC || BC BR Coilovers || SPC camber arms || Work VSS-X || Custom Headlights || PW:JDM CF Covers || Seibon CF Engine Cover ]

Notsud 13

im waiting for the STG 4 1200HP SC kit to come out. 600hp is too little for me.......

kosstick

lol

reldas

word being with d and end in ouche

Ron

__________________
2011 Twin Turbo PW nismo #113 - My Journal - My TT Build Thread
[ GTM GTX Stg2 TT || HKS EVC6 || Custom CarPC || F.I 3'' TDX CBE || SB 6puck clutch/ZSpeed CSC || BC BR Coilovers || SPC camber arms || Work VSS-X || Custom Headlights || PW:JDM CF Covers || Seibon CF Engine Cover ]

cavemancan

Sam,

Don't know if this was already addressed but how much does the Stage 2 kit weigh? What about the twin turbo? I am concerned with the weight being added...IE balance of the car and affects on handling etc.

Thanks,

Chris

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Mazda Rx8 MT Titanium - SOLD!
2009 370Z T-Sport MT Black - Takeda Intake, Swift springs, Rear Camber kit, SS B Lines, FI Exhaust, Z Speed CMAK Flywheel/Clutch Kit, Stillen Brake Cooling.

Nixlimited

This has been asked several times with no definitive answer. I think it's around 60-70 lbs for the TT kit. Probably a bit less for SC given only one compressor.

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Car Sold! Pleasure being a part of the Z community.
New ride: 2015 GT-R - 647 WHP / 641 WTQ (e85) & 543 WHP / 519 WTQ (91)

Notsud 13

word starting with an S and ending with arcasm. learn it, itll make life more bearable.

people like you make everything so serious that it takes away the fun in anything. live a little man, i'm just shooting the **** with you guys. For your record, 600hp is more than enough for me.



thats for you douche

reldas

haha i was kiddy. love the pic btw made me laugh

travisjb

^ guessing that 300whp is more than enough for this one

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2009 370Z #104
*For Sale*

Notsud 13

Lol same here, might have been a bit strong though. :thumbup:

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kosstick

Still no transmission upgrade updates..??..??