GTM Garrett kit vs MHI TT kit

bldg636 · 07-03-2013, 06:24 PM

Forgive me if this has been asked but I couldn't seem to find it anywhere.... I'm pretty convinced that I'd like the Garrett turbo kit because of the quicker spooling capability, but I don't like that you have to tap the oil pan..... Anyone know if you can use the new larger oil pan that comes with the MHI kit on the Garrett kit?
Thanks
Ross

bldg636 · 07-03-2013, 06:26 PM

Or maybe even easier, get the Garrett turbos with the MHI kit?

megalapagas · 07-03-2013, 06:29 PM

Yes that has been answered on the MHI Kit thread....Sam Said that you can go with the MHI kit and if you wanted to switch to Garret turbos later in the future you can still use the same setup of the MHI kit but all you gotta do is just switch out turbos. Hope this helped out

SS_Firehawk · 07-03-2013, 06:31 PM

if you like the garret kit, there are a couple guys selling them in the classifieds and you can order the oil pan separately.

Chuck33079 · 07-03-2013, 06:33 PM

It's not a given that the Garrett kit will outspool the mhi kit. The 16gs will probably be as responsive as the small GT28, if not more so.

elperuano · 07-03-2013, 06:51 PM

The 16gs will fall flat out on the top end tho while the gt28s will keep on "sucking"

Chuck33079 · 07-03-2013, 07:00 PM

Oh, I agree completely. I was just addressing his concern about responsiveness.

SPOHN · 07-03-2013, 08:12 PM

From Sam

Quote:

Originally Posted by SAM@GTM

Yes, it is possible and will be available for sale separately. You can mount the pan with the Garrett kit to get more volume. However, we don't recommend using the returns on the oil pan with the Garrett kit since the Garrett turbos are a lot more sensitive to oil return line. We have extensive experience with Garrett turbos and even per Garrett's recommendation, the oil return needs to be above the oil level.

Bear in mind that we didn't wait until now to do an oil pan out of laziness or to make installing the original turbo kit harder. There is a technical reason for requiring drilling of the upper pan for the oil returns on the Garrett kits. Putting the oil return in the lower pan drastically increases the chances of developing a smoking issue. Basically, the oil will go out the turbine shaft seal into the exhaust instead of into the pan. Keep in mind that ball bearing turbos require just a fine mist of oil to lubricate the bearings and when it comes out of the bearing section that is spinning at 50,000 - 130,000 rpm, it is very frothy and does not flow very well compared to liquid oil. This is why the return needs to be above the oil level: to give the return oil enough room to flow out of the line and calm down.

This is not an issue with the Mitsubishi journal bearing turbos since they require much higher oil volume and pressure to support the journal bearing riding on a film of oil. That is why we can use the oil pan on this kit.

Sam

roplusbee · 07-05-2013, 03:18 PM

I don't see why you would have any issues spooling 18g or even 20g TT's quickly. Ball bearing does not equate to faster spool directly. There are many factors involved. I don't have any issues with lag in my situation.

If you can find someone with a Greddy TT kit in your area, get them to take you for a ride. That will give you a general idea of how 18/18/20g twins will work out with GTM's application.

EDIT: for spelling errors

Sh0velMan · 07-05-2013, 03:22 PM

Getting the Garrett kit for "quicker spooling" is, to be honest, about the last reason you should get that kit. It costs a lot more, is a lot harder to install and truthfully only worth doing if you're going to build the engine and go for big power.

Go with 16g's or 18gs, you'll spool just fine and have plenty of power for the stock bottom end.

diddy535 · 07-05-2013, 03:33 PM

Please don't take this the wrong way but tapping the oil pan is one of the lesser invasive things you're doing to your car going TT. FWIW I don't think it should be the deciding factor between which kit you get.

roplusbee · 07-05-2013, 05:22 PM

Don't they offer the Greddy oil pan? No tapping involved unless you want to.............

SPOHN · 07-05-2013, 05:24 PM

^Read my post above.

diddy535 · 07-05-2013, 05:28 PM

Yeah SPOHN is right, still need to drill the top

roplusbee · 07-05-2013, 10:59 PM

Quote:

Originally Posted by SPOHN

^Read my post above.

We must be talking about different products. The one I have has ports for oil return.

07-03-2013, 06:24 PM	#1 (permalink)
bldg636 Base Member Join Date: Sep 2012 Location: Florida Posts: 141 Drives: Nissan 370z Rep Power: 13	GTM Garrett kit vs MHI TT kit Forgive me if this has been asked but I couldn't seem to find it anywhere.... I'm pretty convinced that I'd like the Garrett turbo kit because of the quicker spooling capability, but I don't like that you have to tap the oil pan..... Anyone know if you can use the new larger oil pan that comes with the MHI kit on the Garrett kit? Thanks Ross __________________ Ross '11 370z Just getting started . . .

07-03-2013, 06:26 PM	#2 (permalink)
bldg636 Base Member Join Date: Sep 2012 Location: Florida Posts: 141 Drives: Nissan 370z Rep Power: 13	Or maybe even easier, get the Garrett turbos with the MHI kit? __________________ Ross '11 370z Just getting started . . .

07-03-2013, 06:31 PM	#4 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	if you like the garret kit, there are a couple guys selling them in the classifieds and you can order the oil pan separately. __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

07-03-2013, 06:33 PM	#5 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29539	It's not a given that the Garrett kit will outspool the mhi kit. The 16gs will probably be as responsive as the small GT28, if not more so. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

07-03-2013, 06:51 PM	#6 (permalink)
elperuano A True Z Fanatic Join Date: Oct 2011 Location: Southwest FL Posts: 1,374 Drives: G37S Rep Power: 29	The 16gs will fall flat out on the top end tho while the gt28s will keep on "sucking" COSMO likes this.

07-03-2013, 06:29 PM	#3 (permalink)
megalapagas Enthusiast Member Join Date: May 2013 Location: McAllen,TX Posts: 457 Drives: '10 370Z Tour A/T Rep Power: 13	Yes that has been answered on the MHI Kit thread....Sam Said that you can go with the MHI kit and if you wanted to switch to Garret turbos later in the future you can still use the same setup of the MHI kit but all you gotta do is just switch out turbos. Hope this helped out

07-03-2013, 07:00 PM	#7 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29539	Oh, I agree completely. I was just addressing his concern about responsiveness. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

07-05-2013, 03:18 PM	#9 (permalink)
roplusbee A True Z Fanatic Join Date: Dec 2009 Location: Killeen, TX Posts: 2,360 Drives: 2007 350Z NISMO Rep Power: 23	I don't see why you would have any issues spooling 18g or even 20g TT's quickly. Ball bearing does not equate to faster spool directly. There are many factors involved. I don't have any issues with lag in my situation. If you can find someone with a Greddy TT kit in your area, get them to take you for a ride. That will give you a general idea of how 18/18/20g twins will work out with GTM's application. EDIT: for spelling errors __________________ 2007 350Z NISMO #0618: Zerolift \| UPREV \| F.I. \| Greddy \| Competition Clutch \| Injector Dynamics \| Aeromotive \| Pioneer \| JL

07-05-2013, 03:22 PM	#10 (permalink)
Sh0velMan A True Z Fanatic Join Date: Jan 2012 Location: Dallas/Ft.Worth Posts: 3,349 Drives: Noisily. Rep Power: 21	Getting the Garrett kit for "quicker spooling" is, to be honest, about the last reason you should get that kit. It costs a lot more, is a lot harder to install and truthfully only worth doing if you're going to build the engine and go for big power. Go with 16g's or 18gs, you'll spool just fine and have plenty of power for the stock bottom end. __________________ Buy My Car! \| Build Thread

07-05-2013, 03:33 PM	#11 (permalink)
diddy535 Track Member Join Date: Feb 2012 Location: St. Louis, MO Posts: 789 Drives: '09 370Z RAE 6MT Rep Power: 15	Please don't take this the wrong way but tapping the oil pan is one of the lesser invasive things you're doing to your car going TT. FWIW I don't think it should be the deciding factor between which kit you get. Dembflyr, Sh0velMan and DEpointfive0 like this. __________________ ( Click to show/hide ) http://www.the370z.com/members-370z-...ys-thread.html

07-05-2013, 05:22 PM	#12 (permalink)
roplusbee A True Z Fanatic Join Date: Dec 2009 Location: Killeen, TX Posts: 2,360 Drives: 2007 350Z NISMO Rep Power: 23	Don't they offer the Greddy oil pan? No tapping involved unless you want to............. __________________ 2007 350Z NISMO #0618: Zerolift \| UPREV \| F.I. \| Greddy \| Competition Clutch \| Injector Dynamics \| Aeromotive \| Pioneer \| JL

07-05-2013, 05:24 PM	#13 (permalink)
SPOHN A True Z Fanatic Join Date: Feb 2010 Location: Covington, GA Age: 46 Posts: 14,844 Drives: Waiting on next Z Rep Power: 222	^Read my post above. __________________

07-05-2013, 05:28 PM	#14 (permalink)
diddy535 Track Member Join Date: Feb 2012 Location: St. Louis, MO Posts: 789 Drives: '09 370Z RAE 6MT Rep Power: 15	Yeah SPOHN is right, still need to drill the top __________________ ( Click to show/hide ) http://www.the370z.com/members-370z-...ys-thread.html

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