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Install my own GTM kit?

So here is my question... I have mild-moderate mechanical knowledge... I installed all the components on my Z myself (exhaust, intake, oil cooler, etc)... also have worked on other cars

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Old 10-12-2011, 02:46 PM   #1 (permalink)
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Default Install my own GTM kit?

So here is my question... I have mild-moderate mechanical knowledge...

I installed all the components on my Z myself (exhaust, intake, oil cooler, etc)... also have worked on other cars I have own doing things like clutch/flywheel replacement, engine pulls and reinstalls, nitrous kits, motor mounts, etc.

Is installing a turbo kit something a moderately mechanically inclined person could do? I am nervous about the possibility of blowing my engine as I am not experienced with forced induction. Can I basically do the install and leave the boost inactive and have it tuned to the proper PSI? As you can see I am pretty elementary with this stuff.
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Old 10-12-2011, 03:56 PM   #2 (permalink)
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If you have done the other stuff as you said you should have no problems.I installed my Greddy twins with the motor in the car and its mostly bolt on parts and stay out of boost till the tuner looks at it.Be prepared for a lot of cussing and launching wrenches across the shop though.......good luck.
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Old 10-12-2011, 04:09 PM   #3 (permalink)
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You can do it, just give yourself lots of time and focus on it one major component at a time. Dont let yourself get overwhelmed, one part at a time. Do not strip anything out or round off any hardware and you will be fine. Be prepared at any time to have to stop and pickup/order a different tool to allow you to reach something.

You cannot really "leave the boost inactive", however you will find the first time you drive the car that you control the boost with the gas pedal. If you just drive it lightly, it will not spool enough to generate enough airflow to risk hurting the engine. You can just drive it nicely to your tuner of choice. If you purchase the turn-key kit, then in theory you are safe to boost it right away, especially if you have the proper gauges to make sure everything is doing its job. But for those who arent surrounded by this stuff every day, I can imagine being more comfortable letting an experienced tuner with a dyno be the first one to boost the car.

I am not saying it has to take this long at all... but you should give yourself 3 weeks to do it in your spare time. You could do it in a week, it all depends on your experience level and tool set.
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Old 10-12-2011, 04:26 PM   #4 (permalink)
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grrrr I wanna do the install myself.. not to save money but for the fun of it. I might consider taking a week off of work and doing it...

Matt if you have done all of those things you should have NO PROBLEM with GTM TT kit. They also give you step by step instructions, with pictures. And based on what I've heard, Sam is always happy to help over the phone.
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Old 10-12-2011, 04:43 PM   #5 (permalink)
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Oh and you can refer to these for reference as well:

DIY GTM Twin Turbo Stage 2 Install!!

GTM Stage I TT Build - Shadetree Style

This is the installation manual for a G37 kit, which is pretty much the same:

http://www.gtmotorsports.com/Manuals..._G37_Coupe.pdf
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Old 10-12-2011, 11:20 PM   #6 (permalink)
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Sounds good guys... when the time comes I think I'll tackle it.
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Old 10-13-2011, 11:17 AM   #7 (permalink)
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i duno. you think its ok NOT to use your parking brake when you park your Z. what other misconceptions do you have about cars?

jkjk best of luck on the install.
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Old 10-13-2011, 11:39 AM   #8 (permalink)
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if you've done what you say you've done before, then you should be able to get by with the install, but you have to be extremely careful and be able to anticipate the piping clearances and whatnot. wrap and heatshield everything that is close or even in the near vicinity of heat.
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Old 10-13-2011, 03:07 PM   #9 (permalink)
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Good thread! Was wondering the same thing myself! Thanks for the info and links guys!
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Old 10-13-2011, 07:36 PM   #10 (permalink)
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The instruction manual was written for the DIY person. That said, there is a certain amount of common sense that is needed to do the installation. There are times, when you'll really need to stop and think about what you are doing and make sure that you understand what you are doing and why. Knowing how the components interact together is a really big help when doing a DIY install on something like a Twin Turbo kit. I mean, if you don't know how a wastegate works, look it up and learn it. Same goes for the blow off valve. That way, when you're in there routing hoses, you know why we're saying to route them a certain way.

Granted, you can do the install and really not know what it is that you're actually doing and get away with it, but if you put a hose on the wrong nipple and on your first test drive, your car isn't boosting or overboosting, you'll be up the proverbial creek without a paddle because you won't be able to troubleshoot the issue.

Also, keep in mind that the 370Z has a really, really tight engine bay. You are going to be stuffing two turbos and a lot of piping in there. You're going to need some dexterity and special tools to be able to tighten some of the bolts, because they're a real PITA to get to. It's just the nature of the beast.

Here is the link to the 370Z instruction manual:

http://www.gtmotorsports.com/Manuals...structions.pdf
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Old 10-13-2011, 08:13 PM   #11 (permalink)
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If you were to pull the motor what is the best way? Drop it from the bottum or pull it from the front. I've seen it done both ways. Does pulling it either way save you from doing something else? Such as if pulled from the bottom you'll need an alignment. Things of this such.
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Old 10-13-2011, 08:33 PM   #12 (permalink)
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Originally Posted by SPOHN View Post
If you were to pull the motor what is the best way? Drop it from the bottum or pull it from the front. I've seen it done both ways. Does pulling it either way save you from doing something else? Such as if pulled from the bottom you'll need an alignment. Things of this such.
The factory recommends doing it from the bottom. That requires the use of a lift as you rest the cradle on jack stands, unbolt it, remove the miscellaneous hoses, connectors, etc. and suspension components and lift the car off of the cradle. Yes, you will need an alignment afterward. The alignment person needs to be told that the cradle was dropped so they can align the cradle as well.

You can do it from the front, and that requires removing the whole radiator support.

Ultimately, removing the engine from the car isn't going to get you a whole lot of mileage when it comes to installing the turbo kit. The only thing it will make easier is installation of the manifolds and turbos. Then the whole thing needs to go back in the car to install the rest of the kit.

We usually leave the motor in the car for in house installs.
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Old 10-13-2011, 08:38 PM   #13 (permalink)
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So that being said if you remove the front radiator support and not pull the motor would be the best bet?
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Old 10-13-2011, 08:53 PM   #14 (permalink)
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So that being said if you remove the front radiator support and not pull the motor would be the best bet?
Um...not really. That would be a lot of extra work for marginal improvement in accessing the manifolds and turbos. The best bet is leaving the motor in the car and following the instructions.

That said, you can do it whichever way you feel most comfortable.
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Old 10-13-2011, 08:58 PM   #15 (permalink)
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