GTM Performance Engineering: MHI Twin Turbo Official Release

Dzel · 10-03-2013, 10:17 PM

Ow hawksausage let's not start trying to figure out who's wings are bigger than who's. Let's keep this on topic. With the people that matter which are the ones committed to this buy.

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m3chhawk · 10-03-2013, 10:19 PM

lulz...

Jayhovah · 10-03-2013, 10:28 PM

Sounds like good news and good news with Sam's successful surgery and speedy recovery to go along with the free upgrade. Are all of us in the group buy eligible? I only joined 2 days ago!

Are there any drawbacks to going with the Garretts? I seem to remember a post that suggested using the Garretts might necessitate drilling the upper oil pan - any merit to that? Any other ways the layout of the kit might differ with the different turbos?

Great customer service! Really unbelievable.

zguynate · 10-03-2013, 10:56 PM

Quote:

Originally Posted by Jayhovah

Sounds like good news and good news with Sam's successful surgery and speedy recovery to go along with the free upgrade. Are all of us in the group buy eligible?

I seem to remember a post that suggested using the Garretts might necessitate drilling the upper oil pan - any merit to that? Any other ways the layout of the kit might differ with the different turbos?

Great customer service! Really unbelievable.

I would like to know this as well.

What a traumatic experience for Sam. I'm glad that he's ok and I hope he recovers quickly. Kudos to GTM for offering this as well.

Mr&Mrs · 10-03-2013, 11:29 PM

Best wishes to Sam and his recovery!

1slow370 · 10-04-2013, 01:01 AM

side note, that dual boost turbo is in use already, new ford superduty diesel v8 the 6.7 scorpion uses it.

SPOHN · 10-04-2013, 03:24 AM

And for the two guys that asked about the Garrett turbo oil return line. No you will not have to tap the upper oil pan. We will still be using the GTM oil baffle pan for our source of return.

Jayhovah · 10-04-2013, 08:34 AM

Quote:

Originally Posted by SPOHN

And for the two guys that asked about the Garrett turbo oil return line. No you will not have to tap the upper oil pan. We will still be using the GTM oil baffle pan for our source of return.

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

This is where I saw it.. (Post 712 of this thread).

Are you sure SPOHN? Not trying to start an argument just genuinely curious what may have changed.

Maybe the mounting position of the Garrett's with the new manifolds holds them high enough?

Edit: For clarity, worth mentioning that the post quoted from Sam was about using the new oil pan with the Garrett kit, not using the Garrett turbos in the MHI kit. Also that post is more than 4 months old, so any number of things could have changed ranging from equipment design to GTM's understanding of the hardware.

mikey1600 · 10-04-2013, 09:51 AM

as everyone else has said, hopefully Sam recovers well, I've just had my gf in the ICU 2 weeks ago, for 3 days, it's not very nice.

Jayhovah - I'd like to know this as well, we will have to wait for Mike to tune in I'm guessing.

Like you, I'm thinking, if the new oil pan can support the Garrett turbo's, it's a no brainer upgrade, for myself who was probably looking towards DIY route, tapping the block wasn't really something I wanted to do and paying a workshop to do the install will probably set back $2k+ for any workshops around my area to install the turbo kit. Most charge around $100/hour.

Mike - can you chime in and confirm this please? Can we run the Garrett turbo's with the rest of this group buy kit without tapping the block?

Alkatraz · 10-04-2013, 03:38 AM

Wow! That was certainly mixed news! Terrible news about Sam but glad to hear that he will be ok. Fantastic news about the Garrett's! Looks like I will be doing some reading and research tonight

Big props to GTM for coming through for their customers. It looks like the delays will be worth it in the end and that this kit will now completely blow everything else out of the water on a cost/benefit basis!

Please pass my regards onto Sam from 'down unda'!

Dzel · 10-04-2013, 06:03 AM

So the mitsu can provide more power but the Garretts are less reliable but have less turbo lag am I on par so far?

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SPOHN · 10-04-2013, 06:05 AM

Quote:

Originally Posted by Dzel

So the mitsu can provide more power but the Garretts are less reliable but have less turbo lag am I on par so far?

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Garrett's are more reliable, Spool easier, and responded better.

Dzel · 10-04-2013, 08:48 AM

Quote:

Originally Posted by SPOHN

Garrett's are more reliable, Spool easier, and responded better.

Where did you get this info from? Dsmtuner.com, brickboard.com and a few others say different. I don't have any turbo experience so excuse the noob questions

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Sh0velMan · 10-04-2013, 09:01 AM

Quote:

Originally Posted by Dzel

Where did you get this info from? Dsmtuner.com, brickboard.com and a few others say different. I don't have any turbo experience so excuse the noob questions

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Not all Garrett's are BB. They've made plenty of journal bearing shitbox turbos just like every other company out there. The GTM kit uses their top of the range GTX line.

m3chhawk · 10-04-2013, 08:02 AM

Quote:

Originally Posted by Dzel

So the mitsu can provide more power but the Garretts are less reliable but have less turbo lag am I on par so far?

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10-03-2013, 10:17 PM	#1 (permalink)
Dzel A True Z Fanatic Join Date: May 2011 Location: Midland, TX Posts: 3,884 Drives: 11 370Z PW M6 Rep Power: 24	Ow hawksausage let's not start trying to figure out who's wings are bigger than who's. Let's keep this on topic. With the people that matter which are the ones committed to this buy. Sent with TapAhoe now Free __________________ 10secWS6 IF YOU CAN'T SWING IT THEN DON'T BRING IT! Check out Domestic Performance C.C.

10-03-2013, 10:19 PM	#2 (permalink)
m3chhawk Track Member Join Date: Sep 2012 Location: Kansas City Posts: 878 Drives: '11 370Z SPT 6MT BLK Rep Power: 25	lulz... __________________ F.I. CF CBE \| Avant Garde M310 \| BC BR's \| ONEighty \| Status \| EvoR \| Stillen \| Whiteline \| B&M \| Bespoke Details Boosted Performance \| Precision Turbo \| Tial \| HKS \| Innovate Motorsports \| Bosch \| Treadstone \| Walbro \| UpRev \| Depo

10-03-2013, 11:29 PM	#5 (permalink)
Mr&Mrs A True Z Fanatic Join Date: May 2010 Location: Tampa Posts: 4,207 Drives: RZ34 Rep Power: 31941	Best wishes to Sam and his recovery! __________________ Project Z <--Click - Check out the link too many mods to list!

10-04-2013, 01:01 AM	#6 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7251	side note, that dual boost turbo is in use already, new ford superduty diesel v8 the 6.7 scorpion uses it. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

10-04-2013, 03:24 AM	#7 (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	And for the two guys that asked about the Garrett turbo oil return line. No you will not have to tap the upper oil pan. We will still be using the GTM oil baffle pan for our source of return. __________________

10-03-2013, 10:28 PM	#3 (permalink)
Jayhovah Premium Member Join Date: May 2013 Location: St. Pete, FL Posts: 3,848 Drives: 520whp Fire Breather Rep Power: 86952	Sounds like good news and good news with Sam's successful surgery and speedy recovery to go along with the free upgrade. Are all of us in the group buy eligible? I only joined 2 days ago! Are there any drawbacks to going with the Garretts? I seem to remember a post that suggested using the Garretts might necessitate drilling the upper oil pan - any merit to that? Any other ways the layout of the kit might differ with the different turbos? Great customer service! Really unbelievable.

10-04-2013, 09:51 AM	#9 (permalink)
mikey1600 Track Member Join Date: Jul 2010 Location: Brisbane, Australia Posts: 503 Drives: MY11 370z Black Rep Power: 16	as everyone else has said, hopefully Sam recovers well, I've just had my gf in the ICU 2 weeks ago, for 3 days, it's not very nice. Jayhovah - I'd like to know this as well, we will have to wait for Mike to tune in I'm guessing. Like you, I'm thinking, if the new oil pan can support the Garrett turbo's, it's a no brainer upgrade, for myself who was probably looking towards DIY route, tapping the block wasn't really something I wanted to do and paying a workshop to do the install will probably set back $2k+ for any workshops around my area to install the turbo kit. Most charge around $100/hour. Mike - can you chime in and confirm this please? Can we run the Garrett turbo's with the rest of this group buy kit without tapping the block?

10-04-2013, 03:38 AM	#10 (permalink)
Alkatraz Base Member Join Date: May 2013 Location: Perth Posts: 215 Drives: 2008 Skyline 370GT Rep Power: 13	Wow! That was certainly mixed news! Terrible news about Sam but glad to hear that he will be ok. Fantastic news about the Garrett's! Looks like I will be doing some reading and research tonight Big props to GTM for coming through for their customers. It looks like the delays will be worth it in the end and that this kit will now completely blow everything else out of the water on a cost/benefit basis! Please pass my regards onto Sam from 'down unda'!

10-04-2013, 06:03 AM	#11 (permalink)
Dzel A True Z Fanatic Join Date: May 2011 Location: Midland, TX Posts: 3,884 Drives: 11 370Z PW M6 Rep Power: 24	So the mitsu can provide more power but the Garretts are less reliable but have less turbo lag am I on par so far? Sent with TapAhoe now Free __________________ 10secWS6 IF YOU CAN'T SWING IT THEN DON'T BRING IT! Check out Domestic Performance C.C.

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