GTM Stage 2 Supercharger Preliminary Testing Results

XwChriswX · 08-22-2011, 10:41 PM

Quote:

Originally Posted by christian370z

They do work with LTHs, you just might see slightly less power as seen on some stage 1 SC kits when installed on a car with LTHs. However, there are no stage 2 SC 370Zs out there yet with LTHs so the additional flow from the larger compressor might mean there won't be the loss in power.

It has nothing to do with power loss, it's said that the headers + the larger compressor simply won't fit together. Yet there hasn't been anything to substantiate this. I'm not saying anyone isn't being truthful, just I'd like to see some sort of labor evidence, or pics, or something describing why with a little bit more explanation than just 'it doesn't fit.'

I fully expect to see that if it can be worked to make these fit to see even more power than with stock headers.

1slow370 · 08-23-2011, 03:46 AM

^maybe if you used a smaller pulley to get your psi back but without tuning the cam timing or shoving more air in you'll struggle to make more power with headers. Our overlap is soo bad for FI that a restrictive exhaust is actually helping to keep the air and fuel in the chamber.

wstar · 08-23-2011, 07:36 AM

Does anyone have hard confirmation that our cars do in fact have significant overlap?

frostyrock7c · 08-23-2011, 07:45 PM

Quote:

Originally Posted by XwChriswX

It has nothing to do with power loss, it's said that the headers + the larger compressor simply won't fit together. Yet there hasn't been anything to substantiate this. I'm not saying anyone isn't being truthful, just I'd like to see some sort of labor evidence, or pics, or something describing why with a little bit more explanation than just 'it doesn't fit.'

I fully expect to see that if it can be worked to make these fit to see even more power than with stock headers.

I think the size of the compressor and the location of the air filter are why Stage 2 isn't compatible with LTH. Check out the press release photos... the air filter mounts behind the compressor at the end of a short tube.

XwChriswX · 08-23-2011, 07:47 PM

Quote:

Originally Posted by frostyrock7c

I think the size of the compressor and the location of the air filter are why Stage 2 isn't compatible with LTH. Check out the press release photos... the air filter mounts behind the compressor at the end of a short tube.

I know that's been the comment, then how do you explain it working with the Stock headers when they have a heat shield around them, and if you look at the Stock headers next to the FI LTH's they have the same profile and pipe routing... So It just begs the question for some sort of explanation...

frostyrock7c · 08-23-2011, 07:50 PM

Quote:

Originally Posted by XwChriswX

I know that's been the comment, then how do you explain it working with the Stock headers when they have a heat shield around them, and if you look at the Stock headers next to the FI LTH's they have the same profile and pipe routing... So It just begs the question for some sort of explanation...

I guess we will find out in a few weeks. I won't be going with LTH but I will post some installed photos if no one beats me to it.

XwChriswX · 08-23-2011, 07:53 PM

Quote:

Originally Posted by XwChriswX

I know that's been the comment, then how do you explain it working with the Stock headers when they have a heat shield around them, and if you look at the Stock headers next to the FI LTH's they have the same profile and pipe routing... So It just begs the question for some sort of explanation...

See here:

Looks pretty identical to me...

frostyrock7c · 08-23-2011, 08:00 PM

Quote:

Originally Posted by XwChriswX

See here:

Looks pretty identical to me...

Agreed... strange indeed.

08-23-2011, 03:46 AM	#2 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7252	^maybe if you used a smaller pulley to get your psi back but without tuning the cam timing or shoving more air in you'll struggle to make more power with headers. Our overlap is soo bad for FI that a restrictive exhaust is actually helping to keep the air and fuel in the chamber. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

08-23-2011, 07:36 AM	#3 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3596	Does anyone have hard confirmation that our cars do in fact have significant overlap? __________________ 7AT Track Car! Journal thread / Car setup details

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