# My custom twin turbo G8 GT build

**URL:** <https://forums.speedlife.net/t/my-custom-twin-turbo-g8-gt-build/268616>\
**Category:** Builds\
**Created:** [March 16, 2014, 6:53pm UTC](https://forums.speedlife.net/t/my-custom-twin-turbo-g8-gt-build/268616 "2014-03-16T18:53:38Z")\
**Posts on this page:** 20\
**Page:** 2

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**Author:** ![maxwell](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/maxwell/32/6524_2.png) [@maxwell](https://forums.speedlife.net/u/maxwell)\
**Post date:** [March 17, 2014, 10:20am UTC](https://forums.speedlife.net/t/my-custom-twin-turbo-g8-gt-build/268616/21 "2014-03-17T10:20:08Z")

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damn gurl. Pardon the potential ignorance… but would you have issues picking up water based on turbo location?

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**Author:** ![turbociv](https://avatars.discourse-cdn.com/v4/letter/t/dfb087/32.png) [@turbociv](https://forums.speedlife.net/u/turbociv)\
**Post date:** [March 17, 2014, 10:41am UTC](https://forums.speedlife.net/t/my-custom-twin-turbo-g8-gt-build/268616/22 "2014-03-17T10:41:46Z")

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I will be tuning this when I get it all together the way I like. Power goals will be in the 500hp range until I can revamp the fuel system and them then ill probably shoot for 6-700whp on e85 unless something goes boom first. lol I welded a stud off the one of each ear on the factory manifolds for weight support but aside from the exhaust and charge piping there is no additional support at the moment, but im sure it will not be a big deal if I decide I need more. Ive already looked into it. Turbo placement is fine, turbos aren’t stuffed behind the wheels and im not building a swamp buggy so im sure I wont have many issues picking up water or small animals. ill probably be fabbing up a skid plate regardless to protect the turbos themselves.

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**Author:** ![newman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/newman/32/7569_2.png) [@newman](https://forums.speedlife.net/u/newman)\
**Post date:** [March 17, 2014, 2:26pm UTC](https://forums.speedlife.net/t/my-custom-twin-turbo-g8-gt-build/268616/23 "2014-03-17T14:26:54Z")

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I would be proactive about the bracing. That’s a fairly large mass on a pretty big moment arm, all supported off a highly heat cycled mild/ss joint. I’m sure you can just tie the bell housing bolts to two of the compressor housing bolts. Probably less hassle doing that now than pulling them off later if that weld breaks. But hey, that’s just the engineer in me talking. It all looks very good though.

What’s the oil change interval on the turbo? I tried getting one for my Harley but they don’t make them that small.

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**Author:** ![Mafdark](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/mafdark/32/6322_2.png) [@Mafdark](https://forums.speedlife.net/u/Mafdark)\
**Post date:** [March 17, 2014, 2:30pm UTC](https://forums.speedlife.net/t/my-custom-twin-turbo-g8-gt-build/268616/24 "2014-03-17T14:30:35Z")

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> [@newman](#):
>
> I would be proactive about the bracing. That’s a fairly large mass on a pretty big moment arm, all supported off a highly heat cycled mild/ss joint. I’m sure you can just tie the bell housing bolts to two of the compressor housing bolts. Probably less hassle doing that now than pulling them off later if that weld breaks. But hey, that’s just the engineer in me talking. It all looks very good though.

A flex pipe would help and breakup the length of that movement arm.

> [@newman](#):
>
> What’s the oil change interval on the turbo? I tried getting one for my Harley but they don’t make them that small.

did you look into aerocharger?

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**Author:** ![newman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/newman/32/7569_2.png) [@newman](https://forums.speedlife.net/u/newman)\
**Post date:** [March 17, 2014, 2:40pm UTC](https://forums.speedlife.net/t/my-custom-twin-turbo-g8-gt-build/268616/25 "2014-03-17T14:40:05Z")

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> [@Mafdark](#):
>
> A flex pipe would help and breakup the length of that movement arm.

Sure, but then  
A) it has to be supported anyway, so why not have it supported by both.  
B) flex pipe before turbo kinds stinks.

> [@Mafdark](#):
>
> did you look into aerocharger?

Yeah. They’re still way bigger than the turbo I wound up using.

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**Author:** ![Mafdark](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/mafdark/32/6322_2.png) [@Mafdark](https://forums.speedlife.net/u/Mafdark)\
**Post date:** [March 17, 2014, 2:45pm UTC](https://forums.speedlife.net/t/my-custom-twin-turbo-g8-gt-build/268616/26 "2014-03-17T14:45:45Z")

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> [@newman](#):
>
> Sure, but then  
> A) it has to be supported anyway, so why not have it supported by both.

I’d rather isolate it from the movement and vibration of the rest of the system and support the mass directly. Then again…

> [@newman](#):
>
> Sure, but then  
> B) flex pipe before turbo kinds stinks.

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**Author:** ![Choda](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/choda/32/7347_2.png) [@Choda](https://forums.speedlife.net/u/Choda)\
**Post date:** [March 17, 2014, 2:49pm UTC](https://forums.speedlife.net/t/my-custom-twin-turbo-g8-gt-build/268616/27 "2014-03-17T14:49:58Z")

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Another Beautiful custom turbo setup from TurboCiv. 500 wheel would be great!

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**Author:** ![ultradriver10000](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ultradriver10000/32/7397_2.png) [@ultradriver10000](https://forums.speedlife.net/u/ultradriver10000)\
**Post date:** [March 17, 2014, 3:26pm UTC](https://forums.speedlife.net/t/my-custom-twin-turbo-g8-gt-build/268616/28 "2014-03-17T15:26:51Z")

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500whp on a twin turbo ls2 won’t be a problem. Upgrade the fuel system and you can get close to 700 on e85 no prob.

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**Author:** ![Blown\_Stroked](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/blown_stroked/32/7324_2.png) [@Blown\_Stroked](https://forums.speedlife.net/u/Blown_Stroked)\
**Post date:** [March 17, 2014, 3:57pm UTC](https://forums.speedlife.net/t/my-custom-twin-turbo-g8-gt-build/268616/29 "2014-03-17T15:57:59Z")

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Looks real good. I need a cool fun dd like this!

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**Author:** ![honda4life](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/honda4life/32/5300_2.png) [@honda4life](https://forums.speedlife.net/u/honda4life)\
**Post date:** [March 17, 2014, 4:23pm UTC](https://forums.speedlife.net/t/my-custom-twin-turbo-g8-gt-build/268616/30 "2014-03-17T16:23:16Z")

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My custom bonner… Hot damn

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**Author:** ![honda4life](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/honda4life/32/5300_2.png) [@honda4life](https://forums.speedlife.net/u/honda4life)\
**Post date:** [March 17, 2014, 4:45pm UTC](https://forums.speedlife.net/t/my-custom-twin-turbo-g8-gt-build/268616/31 "2014-03-17T16:45:50Z")

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Dyno queen on his own dyno

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**Author:** ![DigRacer](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/digracer/32/6661_2.png) [@DigRacer](https://forums.speedlife.net/u/DigRacer)\
**Post date:** [March 17, 2014, 4:47pm UTC](https://forums.speedlife.net/t/my-custom-twin-turbo-g8-gt-build/268616/32 "2014-03-17T16:47:04Z")

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Looks awesome! I was looking at all the pictures to see where you mounted the scavenge pump, then re-read the first post and saw oiless turbos. I didn’t even know they made such an animal. I am amazed how neatly they tuck up in the trans tunnel. Love the G8 platform too. 🙂

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**Author:** ![Harvey](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/harvey/32/5069_2.png) [@Harvey](https://forums.speedlife.net/u/Harvey)\
**Post date:** [March 17, 2014, 7:27pm UTC](https://forums.speedlife.net/t/my-custom-twin-turbo-g8-gt-build/268616/33 "2014-03-17T19:27:32Z")

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> [@LZ](#):
>
> Read the first post 🙂
> 
> “oiless vband turbos”

I thought he was pulling our legs. An oiless turbo sounds like black magic. Time to do some reading!

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**Author:** ![Norb\_O](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/norb_o/32/5189_2.png) [@Norb\_O](https://forums.speedlife.net/u/Norb_O)\
**Post date:** [March 18, 2014, 6:17am UTC](https://forums.speedlife.net/t/my-custom-twin-turbo-g8-gt-build/268616/34 "2014-03-18T06:17:31Z")

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still think you pussed out going with mufflers 🙂 hope you at least got some sound clips of it dumping at the rear like that.

:tup:

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**Author:** ![maxwell](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/maxwell/32/6524_2.png) [@maxwell](https://forums.speedlife.net/u/maxwell)\
**Post date:** [March 18, 2014, 8:38am UTC](https://forums.speedlife.net/t/my-custom-twin-turbo-g8-gt-build/268616/35 "2014-03-18T08:38:58Z")

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Can we talk oil-less turbo’s for a minute here? With the heat running through any turbo system, are these prone to earlier failure, etc? Let’s chat.

Any good online verbiage on them? I didn’t find much on a quick search.

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**Author:** ![Choda](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/choda/32/7347_2.png) [@Choda](https://forums.speedlife.net/u/Choda)\
**Post date:** [March 18, 2014, 12:03pm UTC](https://forums.speedlife.net/t/my-custom-twin-turbo-g8-gt-build/268616/36 "2014-03-18T12:03:22Z")

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I believe They are water cooled

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**Author:** ![LZ1](https://avatars.discourse-cdn.com/v4/letter/l/7ab992/32.png) [@LZ1](https://forums.speedlife.net/u/LZ1)\
**Post date:** [March 18, 2014, 12:29pm UTC](https://forums.speedlife.net/t/my-custom-twin-turbo-g8-gt-build/268616/37 "2014-03-18T12:29:14Z")

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> [@maxwell](#):
>
> Can we talk oil-less turbo’s for a minute here? With the heat running through any turbo system, are these prone to earlier failure, etc? Let’s chat.
> 
> Any good online verbiage on them? I didn’t find much on a quick search.

> [@Choda](#):
>
> I believe They are water cooled

You still need to run coolant lines to them.

[http://compturbo.com/spotlights/oil-less](http://compturbo.com/spotlights/oil-less)

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**Author:** ![brilliantyellowg60](https://avatars.discourse-cdn.com/v4/letter/b/6f9a4e/32.png) [@brilliantyellowg60](https://forums.speedlife.net/u/brilliantyellowg60)\
**Post date:** [March 18, 2014, 12:34pm UTC](https://forums.speedlife.net/t/my-custom-twin-turbo-g8-gt-build/268616/38 "2014-03-18T12:34:56Z")

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i read 3 year service interval for the grease in the bearings.

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**Author:** ![turbociv](https://avatars.discourse-cdn.com/v4/letter/t/dfb087/32.png) [@turbociv](https://forums.speedlife.net/u/turbociv)\
**Post date:** [March 18, 2014, 2:35pm UTC](https://forums.speedlife.net/t/my-custom-twin-turbo-g8-gt-build/268616/39 "2014-03-18T14:35:53Z")

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its a 3 year service interval however they have recently came out with a greasable center section I may upgrade to in the future if I decide to keep this vehicle. The oiless turbo is a self contained unit, tri ceramic ball bearing that can be mounted in any position imaginable. up, down sideways, it doesn’t matter. Obviously the units need to be water cooled.

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**Author:** ![maxwell](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/maxwell/32/6524_2.png) [@maxwell](https://forums.speedlife.net/u/maxwell)\
**Post date:** [March 18, 2014, 2:42pm UTC](https://forums.speedlife.net/t/my-custom-twin-turbo-g8-gt-build/268616/40 "2014-03-18T14:42:13Z")

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Pretty cool stuff. In for vids.

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