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Forced Induction Turbochargers and Superchargers..Got Boost?

How to make Turbonetics ST more reliable?

Old Aug 12, 2011 | 01:53 AM
  #21  
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lol i think you miss understand a little bit, wrapping will help lower intake air temps slightly but it isnt a fix dude. if your worried about temps get a oil cooler and upgrade your radiator that will effect it more then intake air temps. thats part of getting the motor tuned theres a reason you have a intake air temp sensor it automatically adjusts a little based on the intake air temp when you get the car tuned they will factor that in. also do you think your going to have a problem with intake air temps from the tn kit when people are buying bigger turbos boosting much higher pressure with no wraps or turbo blankets and not having any problems? i know resmarted suggested it but one of the major reliability issues with the kit is cracked piping, if your trying to make the kit more reliable why do things to break it more? you will do more by getting a vented hood.

Last edited by jerryd87; Aug 12, 2011 at 01:57 AM.
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Old Aug 12, 2011 | 02:38 AM
  #22  
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I already have a mishimoto radiator and I am already planning on getting an oil cooler and tune. Maybe I should just stick with the turbo blanket? Since I have the updated turbo with the water cooling I don't think I will overheat the turbo. I guess I'll ask Larry what his thoughts are on wrapping the piping and turbo blanket. I'll research more about the cracking pipes issue. From what I've gathered so far though the cracking pipe was because of the old design of the wastegate dump tube which I already have the updated version.

Last edited by jvelos3; Aug 12, 2011 at 02:39 AM.
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Old Aug 12, 2011 | 02:59 AM
  #23  
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Originally Posted by jerryd87
lol i think you miss understand a little bit, wrapping will help lower intake air temps slightly but it isnt a fix dude. if your worried about temps get a oil cooler and upgrade your radiator that will effect it more then intake air temps. thats part of getting the motor tuned theres a reason you have a intake air temp sensor it automatically adjusts a little based on the intake air temp when you get the car tuned they will factor that in. also do you think your going to have a problem with intake air temps from the tn kit when people are buying bigger turbos boosting much higher pressure with no wraps or turbo blankets and not having any problems? i know resmarted suggested it but one of the major reliability issues with the kit is cracked piping, if your trying to make the kit more reliable why do things to break it more? you will do more by getting a vented hood.
There are a lot of misconceptions when it comes to exhaust manifold cracking.
If the material used is of even decent quality (not many chemical flaws in it) it won't crack simply from wrapping. In certain cases wrapping a header can make it stronger. What breaks pipes are a few different things.
First rapid cool down, that will crack even the thickest of log manifolds. This usually never happens, and evo guys can contest even to water you see while daily driving will not crack manifolds. (Manifolds under operating temperature never get touched by moisture: the temperature gradient directly around the manifold is so hot that water immediately evaporates).

Next (the main cause) is a combination of standing waves (or resonant frequency) regular load vibration and expansion. All manifolds vibrate, and metal actually has a decent elasticity. ---(ok on the atomic packaging level its very un-forgiving [and if you go deeper you can get into some really cool physics when you involve currents lol ill stay away from tangets ], BUT you'd be surprised how much flex/expansion is actually in metal)--- A lot of manifolds have a very 'square' (for a lack of better term) design; they will break before they flex/give to both the vibrations and expansions. To make up for this, high quality manifolds use stronger materials (like 321 vs 304) and thicker tubeing (IE a 18 gauge 2" vs a 10 gauge 2" is a big difference). When the metal expands it becomes more pliable/brittle (as the atoms are actually "further apart" from each other).

A wrap would keep the heat inside of the manifold, and yes it could cause cracking but I have personally seen 16 gauge wrapped 304 stainless used on a daily driver (ebay manifold) with no issues. In fact I'm going to run custom manifolds with similar specs. If cracking is an issue (from lack of support) the shop should just weld a few support pieces to the engine/headers etc.
Wrapping the manifolds would be quite beneficial on the tnetics kit due to the sheer length of it. It would increase efficiency and help keep it from melting sh*t.
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Old Aug 12, 2011 | 09:54 PM
  #24  
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everything you says makes a valid point i was simply pointing out that they have had issues with cracking pipes, if this was fixed with the updated kit i dont know i decided right at the start i wasnt gona mess with there kit. i was just pointing out that if a kit has issues with cracking then heating it up will cause more problems. as you said the material becomes more pliable the hotter it is so its easier to break like that, the wrap MIGHT help hold it togeather but personally i wouldnt wanna mess with it. turbo blanket on the other hand should be fine i was just specifically referring to higher temps on the pipes.

trust me im all for ceramic coating and wrapping, my kits getting ceramic kit(well the headers come ceramic coated i have to get the y pipe coated lol) and dei titanium wrap plus dei titanium turbo blanket but im more after the increased spool. these are just things the op needs to be aware of if he has parts reinforced so he dosnt need to worry about it then go for it but i wouldnt just wrap everything and call it good.
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Old Aug 12, 2011 | 11:18 PM
  #25  
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Treadstone.com has the rights to the TN kit, the wastegate pipe is notorious for cracking. They have an updated version.
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Old Aug 13, 2011 | 06:26 AM
  #26  
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OP, If you look at the second post by Ryan at Forged on this thread you can see pictures the failure mode of my original TN Kit.

https://my350z.com/forum/shop-builds...s-top-5-a.html

I put the kit on my '04 350z vert and ran it a few years. Nevery had any engine issues, just the piping failure shown in the thread. Ran the kit at 8psi. Made good power and certainly made the car way more fun than stock. I also upgraded the fuel system (440 injectors plus upgraded fuel pump), wheels/tires/suspension (stock setup just spun and spun), added a Utec, plenum spacer, some brake work.

I had made the decision to run the kit until something blew, which it obviously did, and then built a motor...

Good luck!
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Old Aug 14, 2011 | 04:39 PM
  #27  
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Originally Posted by mrkplatt
I had made the decision to run the kit until something blew, which it obviously did, and then built a motor...

Good luck!
Thanks for posting the link. I read through the thread pretty quick but it seems like the only problem you had was the pipe. The motor didn't actually blow up, correct?
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Old Aug 15, 2011 | 02:53 AM
  #28  
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Originally Posted by jvelos3
Thanks for posting the link. I read through the thread pretty quick but it seems like the only problem you had was the pipe. The motor didn't actually blow up, correct?
Correct.
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