Greddy Twin-Turbo In Development

aprazma · 11-02-2009, 11:44 AM

20g is also available as water and oil cooled.

Quote:

Originally Posted by LiquidZ

My only concern about the 20g is that it is only oil cooled. I am wondering if it will superheat the oil on a road course seeing that its the only thing lubricating it. Any opinions?

Scribe · 11-02-2009, 12:26 PM

I would definitely upgrade to a large oil cooler if I was going with a turbocharger. The Z's engine compartment is a nightmare for heat management.

Heat management is a crucial and usually under-developed portion of a great turbo kit. So says Corkey Bell and my experience. A good 370Z kit is going to need GOOD heat-shields, wraps, covers, etc. And you are going to want to get more air through the engine bay via ducting, larger openings and possibly a vented hood/different front fascia. The perfect FI setup (which I have not seen) is likely not going to place the intercoolers in front of the radiator or will use good ducting to get fresh air around to the radiator. The 300ZX actually had a decent engine compartment layout.

Scribe · 11-02-2009, 12:41 PM

Ok, after looking at images of the Z with the bumper removed, the ideal setup would be very close to the 300ZXTT image I posted and would require relocation of the power steering cooler (not really a big deal) and removal of the black plastic blockers behind the "fangs".

LiquidZ · 11-02-2009, 01:03 PM

Quote:

Originally Posted by aprazma

20g is also available as water and oil cooled.

Looks like I will be calling Greddy to see if you can upgrade!

RCZ · 11-01-2009, 11:46 PM

well...a TT z with a normal budget has no business on a track. Now, if you have the means....then track away my friend.

B1nks · 11-02-2009, 02:43 PM

I would have to go with GTM because they are
1: Active on these boards and have made great turbo kits for the Z/G platform for years now and have proven reliable.
2: Their products are made in America (to my knowledge)
3: They cool and there are a few vendors on here that use their stuff also which should speak some volumes for their product.

protoZ · 11-02-2009, 05:54 PM

according to greddy they are making just about the same power as the GTM so its really up to preference on who has the better cooling system and intercooler setup. the exhaust is also very critical when building twin turbo cars. you have to remember that each twin turbo is meant to work with each companies own exhaust. taking that into consideration GTM does have what seems to be the better kit due to larger exhaust diameters but im not sure which i would choose because of cooling on these cars is so critical.

XwChriswX · 11-03-2009, 10:41 AM

Guys here's my debate...

I want to TT my Z eventually... However the funding will take a while to aquire... so do I:

A. Go ahead and enjoy the F.I. 2.5" Exhaust for now, until I can get the GTM TT/3" Exhaust?

B. Go ahead and get the GTM 3" Exhaust so it's something I don't have to buy later?

Buddy Revell · 11-03-2009, 12:40 PM

Quote:

Originally Posted by XwChriswX

Guys here's my debate...

I want to TT my Z eventually... However the funding will take a while to aquire... so do I:

A. Go ahead and enjoy the F.I. 2.5" Exhaust for now, until I can get the GTM TT/3" Exhaust?

B. Go ahead and get the GTM 3" Exhaust so it's something I don't have to buy later?

Buy the FI exhaust and enjoy it now, then sell it when you get the twin turbo.

JoeD · 11-03-2009, 01:43 PM

Quote:

Originally Posted by Buddy Revell

Buy the FI exhaust and enjoy it now, then sell it when you get the twin turbo.

Sure. Or just buy the 3" exhaust now and enjoy that, while not having to deal with the hassle of buying/selling more parts in the future.

modme · 11-03-2009, 11:46 AM

^FI's 2.5 inch exhaust will work fine with GTM twin turbo. I dont post on this forum too much because I have a G37. But I installed my own GTM twins and are running them with 2.5" FI exhaust with High flow cats. I'm making 430whp at about 7 psi.

XwChriswX · 11-03-2009, 11:48 AM

Quote:

Originally Posted by modme

^FI's 2.5 inch exhaust will work fine with GTM twin turbo. I dont post on this forum too much because I have a G37. But I installed my own GTM twins and are running them with 2.5" FI exhaust with High flow cats. I'm making 430whp at about 7 psi.

Yeah I've heard that too, I was just curious cause if you wanna go any higher HP wise, you'd do better with the 3" Exhaust. Not nocking F.I.'s in ANY way cause that's what I want actually lol. But if I'm going to get the best bang for my buck, if 3" is what I need, 3" is what I get.

Togo · 11-03-2009, 04:23 PM

Persoanlly, If I was 110% sure I was doing a TT setup, I wouldn't waste the time going with a NA exhaust just to sell it, lose some money on the item and then purchase a new exhaust. I'd either stay stock and do it all at once or I'd get the 3" now and just eat the loss until the TT goes in.

JoeD · 11-03-2009, 05:08 PM

Quote:

Originally Posted by Togo

I'd either stay stock and do it all at once or I'd get the 3" now and just eat the loss until the TT goes in.

Eat what loss?

Togo · 11-03-2009, 05:18 PM

Quote:

Originally Posted by JoeD

Eat what loss?

Drop in low end torque

11-03-2009, 10:41 AM	#8 (permalink)
XwChriswX WFLYIDNNE Join Date: Jul 2009 Location: In The Fastlane Posts: 50,648 Drives: 02 GDB WRX Rep Power: 453	Guys here's my debate... I want to TT my Z eventually... However the funding will take a while to aquire... so do I: A. Go ahead and enjoy the F.I. 2.5" Exhaust for now, until I can get the GTM TT/3" Exhaust? B. Go ahead and get the GTM 3" Exhaust so it's something I don't have to buy later? __________________ Bonnie - Stage 2, Audio build coming this fall! R.I.P. Abby 3/29/10 - 3/30/14

11-03-2009, 04:23 PM	#13 (permalink)
Togo A True Z Fanatic Join Date: May 2009 Location: E. Northport, NY Posts: 7,597 Drives: Stuff Rep Power: 659	Persoanlly, If I was 110% sure I was doing a TT setup, I wouldn't waste the time going with a NA exhaust just to sell it, lose some money on the item and then purchase a new exhaust. I'd either stay stock and do it all at once or I'd get the 3" now and just eat the loss until the TT goes in. __________________ This will decimate all after you put about fifteen grand in it or more, and if we have to, overnight parts from Japan. Joe Clem and Koeppel Nissan

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11-02-2009, 12:26 PM	#2 (permalink)
Scribe Base Member Join Date: Jan 2009 Location: Houston, TX. Posts: 182 Drives: Touring-Sport-Manual Rep Power: 222	I would definitely upgrade to a large oil cooler if I was going with a turbocharger. The Z's engine compartment is a nightmare for heat management. Heat management is a crucial and usually under-developed portion of a great turbo kit. So says Corkey Bell and my experience. A good 370Z kit is going to need GOOD heat-shields, wraps, covers, etc. And you are going to want to get more air through the engine bay via ducting, larger openings and possibly a vented hood/different front fascia. The perfect FI setup (which I have not seen) is likely not going to place the intercoolers in front of the radiator or will use good ducting to get fresh air around to the radiator. The 300ZX actually had a decent engine compartment layout.

11-02-2009, 12:41 PM	#3 (permalink)
Scribe Base Member Join Date: Jan 2009 Location: Houston, TX. Posts: 182 Drives: Touring-Sport-Manual Rep Power: 222	Ok, after looking at images of the Z with the bumper removed, the ideal setup would be very close to the 300ZXTT image I posted and would require relocation of the power steering cooler (not really a big deal) and removal of the black plastic blockers behind the "fangs".

11-01-2009, 11:46 PM	#5 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1120	well...a TT z with a normal budget has no business on a track. Now, if you have the means....then track away my friend.

11-02-2009, 02:43 PM	#6 (permalink)
B1nks Track Member Join Date: Apr 2009 Location: Houston,Tx Posts: 721 Drives: 2009 370Z Base 6MT Rep Power: 509	I would have to go with GTM because they are 1: Active on these boards and have made great turbo kits for the Z/G platform for years now and have proven reliable. 2: Their products are made in America (to my knowledge) 3: They cool and there are a few vendors on here that use their stuff also which should speak some volumes for their product.

11-02-2009, 05:54 PM	#7 (permalink)
protoZ Base Member Join Date: Sep 2009 Location: war town, GA Posts: 228 Drives: the car im tradin in Rep Power: 17	according to greddy they are making just about the same power as the GTM so its really up to preference on who has the better cooling system and intercooler setup. the exhaust is also very critical when building twin turbo cars. you have to remember that each twin turbo is meant to work with each companies own exhaust. taking that into consideration GTM does have what seems to be the better kit due to larger exhaust diameters but im not sure which i would choose because of cooling on these cars is so critical.

11-03-2009, 11:46 AM	#11 (permalink)
modme Enthusiast Member Join Date: Mar 2009 Location: NY Posts: 345 Drives: G37 Rep Power: 18	^FI's 2.5 inch exhaust will work fine with GTM twin turbo. I dont post on this forum too much because I have a G37. But I installed my own GTM twins and are running them with 2.5" FI exhaust with High flow cats. I'm making 430whp at about 7 psi.