GTM vs STILLEN sc's

lando76 · 06-11-2010, 08:46 PM

Just curious how you feel about the two SC. They both are running around the same psi which is 8 I believe. I have read that Stillen has addressed the extra heat that is going to be generated by an already high compression ratio engine. I have not read or found where and how GTM has addressed this issue.

How about build quality, reliability and the safety of the two. Is 8 psi already at the top of what the stock nissan engine can handle. I would not feel comfortable running that close to a possible engine failure if so.

nogoodname · 06-11-2010, 08:56 PM

I would wait until RCZ and Shumby have their reviews and drove their cars for a bit.

RCZ · 06-11-2010, 08:59 PM

I think we can safely run a bit more than 8 psi. It should be just fine at 8.

Shumby is having issues with his long tube headers, I might have similar issues with my header/HFC setup. Until both of these are resolved, we aren't going to be able to give you straight answers..

How are we supposed to know about reliability when no one has it installed?

Build quality, I can't speak for the GTM kit because I haven't seen it, but the Stillen one is pretty damn good. All the components are very clean and the kit is just solid.

LateralG'z · 06-11-2010, 09:03 PM

Why would better flow create issues with forced inductions, SC or Turbos? LTH HFC shouldn't have any effect on the kits performance, only make them better.

Zsteve · 06-11-2010, 09:03 PM

Quote:

Originally Posted by lando76

Just curious how you feel about the two SC. They both are running around the same psi which is 8 I believe. I have read that Stillen has addressed the extra heat that is going to be generated by an already high compression ratio engine. I have not read or found where and how GTM has addressed this issue.

How about build quality, reliability and the safety of the two. Is 8 psi already at the top of what the stock nissan engine can handle. I would not feel comfortable running that close to a possible engine failure if so.

both are using ICs. The FMIC of GTM is a proven product, the one by Stillen since its not a normal one will IMO have to prove it works. I know water to air ICs work just need to see how the one Stillen made does. The GTM FMIC is one that is used thru out FIs so its been proven. And 8 psi isnt as bad as some turbos PSIs.

nogoodname · 06-11-2010, 09:04 PM

Quote:

Originally Posted by LateralG'z

Why would better flow create issues with forced inductions, SC or Turbos? LTH HFC shouldn't have any effect on the kits performance, only make them better.

There is such thing as too much flow as we just learned about the VVEL.

Zsteve · 06-11-2010, 09:10 PM

Quote:

Originally Posted by nogoodname

There is such thing as too much flow as we just learned about the VVEL.

So Scs dont provide backpressure like turbos?

shumby · 06-11-2010, 09:11 PM

I have seen both the stillen and GTM kit in person both have excelent build quality. The GTM intercooler will have no issues with dealing with heat.

As to the LTH issue no back pressure is causing it not to build boost do to the overlap of the valve timing. And as NOONE has the VVEL cracked yet it is not a good place to be. I believe RCZ will be ok with his set up as he still has some sort of cat in the system. I am thinking even running test pipes with this sc set up will not work well either. But hey only way to know forsure is to test it like i did with the LTH. But right now if you are going SC route do not get LTH

shumby · 06-11-2010, 09:13 PM

Quote:

Originally Posted by Zsteve

So Scs dont provide backpressure like turbos?

no they do not turbos use your exhaust gasses to spin the turbos supplying their owen back pressure. SC are belt driven direct off the engine

RCZ · 06-11-2010, 09:13 PM

^ FI just lost some sales.

Um, I hope you're right. We'll see soon enough.

Zsteve · 06-11-2010, 09:15 PM

Quote:

Originally Posted by shumby

I have seen both the stillen and GTM kit in person both have excelent build quality. The GTM intercooler will have no issues with dealing with heat.

As to the LTH issue no back pressure is causing it not to build boost do to the overlap of the valve timing. And as NOONE has the VVEL cracked yet it is not a good place to be. I believe RCZ will be ok with his set up as he still has some sort of cat in the system. I am thinking even running test pipes with this sc set up will not work well either. But hey only way to know forsure is to test it like i did with the LTH. But right now if you are going SC route do not get LTH

Well like you said all you have to do is go back stock on those items and you will have your awesome powered Z back. Im still jealous and will be waiting to see how the useable power is and how quickly it comes on. I know 1st and 2nd will be tough but Im hoping from there on the car will just grab and pick up like carzy.

Zsteve · 06-11-2010, 09:16 PM

Quote:

Originally Posted by RCZ

^ FI just lost some sales.

Um, I hope you're right. We'll see soon enough.

I dont think so. LTH with FI probably wouldnt have added much anyway so anyone that wants a SC will be willing to take those off for the SC. I think I heard themn say any ways not to do LTHs from the beginning.

LateralG'z · 06-11-2010, 09:18 PM

Quote:

Originally Posted by nogoodname

There is such thing as too much flow as we just learned about the VVEL.

How is to much flow a problem, ever step under the hoods of full built race cars, they have zero restrictions, LTH with no exhaust and work great. Valve over lap might be the issue but maybe something more than that. Not sure. Seen plenty of full race TT or SC with no restrictions making great power. How come 350Z's are not having the same issue?

shumby · 06-11-2010, 09:20 PM

No tony had said these would work well with a SC set up. this is obviously not the case.

As for my car everything is stable with it as is and thee are no issues with thcanadian ECU and the tuning.

RCZ · 06-11-2010, 09:20 PM

Quote:

Originally Posted by Zsteve

I dont think so. LTH with FI probably wouldnt have added much anyway so anyone that wants a SC will be willing to take those off for the SC. I think I heard themn say any ways not to do LTHs from the beginning.

yeah, but anyone considering superchargers in the future will no longer purchase the lth's.

06-11-2010, 08:46 PM	#1 (permalink)
lando76 Base Member Join Date: Jul 2009 Location: ca Posts: 107 Drives: N/A Rep Power: 16	GTM vs STILLEN sc's Just curious how you feel about the two SC. They both are running around the same psi which is 8 I believe. I have read that Stillen has addressed the extra heat that is going to be generated by an already high compression ratio engine. I have not read or found where and how GTM has addressed this issue. How about build quality, reliability and the safety of the two. Is 8 psi already at the top of what the stock nissan engine can handle. I would not feel comfortable running that close to a possible engine failure if so.

06-11-2010, 08:59 PM	#3 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1119	I think we can safely run a bit more than 8 psi. It should be just fine at 8. Shumby is having issues with his long tube headers, I might have similar issues with my header/HFC setup. Until both of these are resolved, we aren't going to be able to give you straight answers.. How are we supposed to know about reliability when no one has it installed? Build quality, I can't speak for the GTM kit because I haven't seen it, but the Stillen one is pretty damn good. All the components are very clean and the kit is just solid. Last edited by RCZ; 06-11-2010 at 09:04 PM.

06-11-2010, 09:03 PM	#4 (permalink)
LateralG'z Track Member Join Date: Nov 2009 Location: Oklahoma Posts: 876 Drives: 370z Rep Power: 17	Why would better flow create issues with forced inductions, SC or Turbos? LTH HFC shouldn't have any effect on the kits performance, only make them better. __________________ 2010 Mag Black, 6MT,

06-11-2010, 09:11 PM	#8 (permalink)
shumby Captin Canuck Join Date: Dec 2008 Location: with your mom Age: 44 Posts: 6,288 Drives: your sister Rep Power: 236	I have seen both the stillen and GTM kit in person both have excelent build quality. The GTM intercooler will have no issues with dealing with heat. As to the LTH issue no back pressure is causing it not to build boost do to the overlap of the valve timing. And as NOONE has the VVEL cracked yet it is not a good place to be. I believe RCZ will be ok with his set up as he still has some sort of cat in the system. I am thinking even running test pipes with this sc set up will not work well either. But hey only way to know forsure is to test it like i did with the LTH. But right now if you are going SC route do not get LTH __________________ Originally Posted by SAM@GTM Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living . Sam

06-11-2010, 09:20 PM	#14 (permalink)
shumby Captin Canuck Join Date: Dec 2008 Location: with your mom Age: 44 Posts: 6,288 Drives: your sister Rep Power: 236	No tony had said these would work well with a SC set up. this is obviously not the case. As for my car everything is stable with it as is and thee are no issues with thcanadian ECU and the tuning. __________________ Originally Posted by SAM@GTM Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living . Sam

06-11-2010, 08:56 PM	#2 (permalink)
nogoodname Lifetime Premium Join Date: Nov 2008 Location: Montreal Posts: 22,357 Drives: E46 M3 Rep Power: 1765	I would wait until RCZ and Shumby have their reviews and drove their cars for a bit.

06-11-2010, 09:13 PM	#10 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1119	^ FI just lost some sales. Um, I hope you're right. We'll see soon enough.

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