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-   -   Another DIY Twin Turbo kit (COMP oil-less turbos) (http://www.the370z.com/forced-induction/98318-another-diy-twin-turbo-kit-comp-oil-less-turbos.html)

thangcu35 12-03-2014 01:14 PM

Quote:

Originally Posted by Boosted Performance (Post 3046545)
Nice work...and yes the passenger side is the PITA. When I did this back in the day on my 350z, I figured external wastegates would be the best

You will find that the IC pipes will be a bit of a pain, but it looks like you put the turbos a bit further back than I did, so it may not be too bad.

Good luck with the build, and post a lot of pictures.

Yes it would have been much easier had i went with external gates, but going internal saves me $600. I pushed the turbo farther back so I can run a short filter right off the compressor housing, with a hydro shield. This gives me room to run the charge piping through the wheel well to the IC. As long as i can get the driver side to work, the passenger side should be cakewalk.

I have modified the wastegate bracket to allow the actuator to hug closely to the housing. This pretty much solved the low clearance issue. Its currently sitting right at same level as my resonated test pipes and this is safe enough for me.

http://i1380.photobucket.com/albums/...psaqq9gf8y.jpg

1slow370 12-03-2014 05:20 PM

Yeah but if you scrape a tp you have an exhaust leak, scrape an actuator and you could blow a turbo or a motor.

Cell 12-03-2014 06:21 PM

Quote:

Originally Posted by jwick (Post 3046309)
:iagree:

Definitely needs to go external

Yup, external gates would of helped with clearance.

thangcu35 12-03-2014 07:45 PM

Quote:

Originally Posted by 1slow370 (Post 3046819)
Yeah but if you scrape a tp you have an exhaust leak, scrape an actuator and you could blow a turbo or a motor.

Not exactly that dramatic. If I do hit a large road debris while under full boost, the wastegate bracket will bend toward the turbine housing forcing the flapper door to open and release boost. I don't think it's possible to scrape the actuator over bumps, because it's currently sitting as high as the exhaust. I do get your sentiment though and will take your warning with caution.

1slow370 12-03-2014 08:12 PM

Yep not saying it gonna do it but it is a greater chance. Like if ypu scrape it even if it bends and opens patial if it tears the front of the can open it will stick only partially open and may over boost.

taroslush 12-06-2014 02:57 AM

Do you plan on adding a support brace to the turbos some how? seems like a good amount of weight hanging off the header. ... I guess you could build a brace off the down pipes kinda like the brace that connects to the cats and trans.

thangcu35 12-08-2014 05:17 PM

I think Im one of the lucky guys that has a tolerant wife. Not only that she buys me car parts for Christmas! Top speed pro 1 will be used for the turbo back. I will have to shorten it a bit to make it fit the discharge pipe. I needed a cheaper exhaust to hack up and decided on Top Speed. Over the weekend I got the 340lph pump installed and started fitting the 2nd turbo. It's getting closer now.

http://i1380.photobucket.com/albums/...pso4x4sbph.jpg

thangcu35 12-08-2014 05:33 PM

Quote:

Originally Posted by taroslush (Post 3048973)
Do you plan on adding a support brace to the turbos some how? seems like a good amount of weight hanging off the header. ... I guess you could build a brace off the down pipes kinda like the brace that connects to the cats and trans.

I do plan on modifying the OEM cats brace to attach to the down pipes. It's not so much about the weight that concerns me, it's the vibration because that will crack things. The OEM bracket has rubber bushings to absorb the vibration and I will need that.

thangcu35 12-08-2014 09:59 PM

Both turbos test fitted. I redid the driver side and got the wastegate actuator to a safer clearance at the cost of clearance to chassis. The passenger side is about the same height and they definitely sit a tad higher than the test pipes. It was a difficult task because I also had to angle the turbo correctly so that i can squeeze in the air filters, and I managed to make them fit. It was not easy when you dont have a car lift to work on. Good thing claustrophobic isnt in my system.

http://i1380.photobucket.com/albums/...psokqubga5.jpg

SlowZ 12-08-2014 11:03 PM

Looks good but I would be super worried about hitting something on the wastegate actuator or turbos in general. I'm sure you know how to avoid scraping but sometimes iv been driving and I see like a pine cone or something in the street that I can't avoid and I cringe as I go over it. That would be my only concern. Otherwise this thing looks beast!

Rusty 12-09-2014 08:45 AM

Looking good. :tup:

Dead critters play hell with my O2 sensor plugs on the tranny. :shakes head: I've broken both of them a couple of times. Got them zip-tied and taped together. :shakes head:

G37Sam 12-09-2014 09:59 AM

I love custom builds! Surprised no one has pointed out that actuators sitting way too low!

















just messing haha good luck.

thangcu35 12-09-2014 12:42 PM

:wtf2:

Don't get them started on that again lol.


Quote:

Originally Posted by G37Sam (Post 3051573)
I love custom builds! Surprised no one has pointed out that actuators sitting way too low!

















just messing haha good luck.


TopgunZ 12-09-2014 04:54 PM

Maybe you could fab some sort of bottom cross bracket that will protect it and take the hit first if it really is a concern.

I have the BP kit and have never bottomed out riding on stock suspension.

thangcu35 12-09-2014 06:32 PM

No real update, just a couple of pics for viewing pleasure. I finished welding up the down pipes today. The other one shows how much of a tight fit with the filter on.

http://i1380.photobucket.com/albums/...psl94dkltt.jpg

http://i1380.photobucket.com/albums/...pstkaadonh.jpg

http://i1380.photobucket.com/albums/...psmkp6jugt.jpg


Quote:

Originally Posted by TopgunZ (Post 3051971)
Maybe you could fab some sort of bottom cross bracket that will protect it and take the hit first if it really is a concern.

I have the BP kit and have never bottomed out riding on stock suspension.


I thought of a similar idea when I was under the car today. Instead of a bracket, I'll use metal sheet as an undertray to cover the bottom of the turbos. This will protect it from any random debris and I don't have to worry about water splashing into my air filters either.


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