Greddy Twin-Turbo In Development

LiquidZ · 11-01-2009, 09:17 PM

Quote:

Originally Posted by Brazilbro

im also leaning Greddy, thoses Mitsu turbos just last so long.. i went through 2 garretts in 2 yrs compared to 1 Greddy 20g that lasted 3 cars and 5yrs and could be still going for all I know.

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?

JoeD · 11-01-2009, 11:50 PM

Quote:

Originally Posted by LiquidZ

I am wondering if it will superheat the oil on a road course seeing that its the only thing lubricating it. Any opinions?

A TT 370Z has no business on a road-course. If you are planning on attending track-events or racing competitively, stick to bolt-ons.

LiquidZ · 11-02-2009, 12:03 AM

Quote:

Originally Posted by JoeD

A TT 370Z has no business on a road-course. If you are planning on attending track-events or racing competitively, stick to bolt-ons.

I won't be racing competitively. I might attend a few track days with the family for fun, and that's it. If I were being competitive, I would definitely be running full bolt-ons. However, this is a street car that might see a track once or twice a year, so a turbo OR supercharger might still be on the table.

JoeD · 11-02-2009, 12:11 AM

Quote:

Originally Posted by LiquidZ

I won't be racing competitively. I might attend a few track days with the family for fun, and that's it. If I were being competitive, I would definitely be running full bolt-ons. However, this is a street car that might see a track once or twice a year, so a turbo OR supercharger might still be on the table.

Perhaps a track-event or two per year will be fine given you're not pushing the car to 10/10. However, exposing such a highly modified car to such levels of stress is a recipe for disaster, more often than not.

RCZ · 11-02-2009, 12:46 AM

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.

aprazma · 11-02-2009, 12:44 PM

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, 01:26 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, 01:41 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, 02:03 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!

Brazilbro · 11-02-2009, 03:42 PM

Quote:

Originally Posted by JoeD

A TT 370Z has no business on a road-course. If you are planning on attending track-events or racing competitively, stick to bolt-ons.

Tell that to Forged performace

B1nks · 11-02-2009, 03:43 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, 06:54 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, 11:41 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?

modme · 11-03-2009, 12:46 PM

^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, 12:48 PM

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.

11-03-2009, 11:41 AM	#133 (permalink)
XwChriswX WFLYIDNNE Join Date: Jul 2009 Location: In The Fastlane Posts: 50,648 Drives: 02 GDB WRX Rep Power: 452	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

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11-02-2009, 12:46 AM	#125 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1119	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, 01:26 PM	#127 (permalink)
Scribe Base Member Join Date: Jan 2009 Location: Houston, TX. Posts: 182 Drives: Touring-Sport-Manual Rep Power: 220	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, 01:41 PM	#128 (permalink)
Scribe Base Member Join Date: Jan 2009 Location: Houston, TX. Posts: 182 Drives: Touring-Sport-Manual Rep Power: 220	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".

11-02-2009, 03:43 PM	#131 (permalink)
B1nks Track Member Join Date: Apr 2009 Location: Houston,Tx Posts: 721 Drives: 2009 370Z Base 6MT Rep Power: 507	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, 06:54 PM	#132 (permalink)
protoZ Base Member Join Date: Sep 2009 Location: war town, GA Posts: 228 Drives: the car im tradin in Rep Power: 16	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, 12:46 PM	#134 (permalink)
modme Enthusiast Member Join Date: Mar 2009 Location: NY Posts: 345 Drives: G37 Rep Power: 16	^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.