So What The He11 Does Work.... Build

Boyko · Dec 17, 2012

Do big turbos work? Water to air work, I think it should. How about a big A$$ Chinese turbo?

So in a fit of confusion me and a buddy decided to build 2 different turbo kits and glue em to 2 identical sleds. 2012 & 2011 low milage RMKs

1st one is with the classic 2860 .86 garrett, really straight forward kit.

2nd kit is going to be a 73mm .86 turbo that should be on a beet to $hit 86 civic, Have to add a massive water to air set up to give me a edge

So after we strip the sleds we did a quick check on the piston clearance as it has plagued Polaris in the past. Both came out at .006, not the best
way to check but it does get the job done.

Both sleds are getting divorced exhaust on them, my welding did get better but it still sucks, this is a nice pic. The flange I built will fit a few
different turbos, I think I might be changing the 73mm way to soon.

This 200.00 e-bay turbo scares me, keeps me awake at night. I had to mill out the interior scroll section of the turbo 1.75mm, it just was
to tight for a 2-smoker The red part is what I opened up

dvst8r · Dec 18, 2012

Watching this one, I have long since thought about a cheap Chinese turbo, build just because.

Not sure I would have gone that big, you might have to pick up a second small Chinese turbo and do compounds. LOL

73mm inducer or exducer? I'm assuming exducer as a 73mm inducer is 1000hp turbo, and would never light. So about the size of a T3 super 60.

Or is 73mm the turbine measurement?

Boyko · Dec 18, 2012

It is a 73mm exducer on the compressor, I have to pull the housing off to do some mods to it. Seems there are a few things I have to change to try to get this thing to work on a 2-stroke. The hot side was supposal the same specs as a 28 series Garrett.

dvst8r · Dec 18, 2012

So it should be right between the 2871 & the 2876, other then it is probably copied from old garrett "T series" wheel tech, so it will probably spool like the 2876 and flow more like a 2860 on the compressor side.

But for a $200 turbo I think it will still be a good shoot out, and I am glad you are doing it.

Boyko · Dec 25, 2012

Here is a pick comparing a garrett 2860 with what I am trying to work with, the garrett has 2 less blades on the turbine and a less aggressive sweep on the tip

Boyko · Dec 25, 2012

Kind of hit the wall with this turbo, the compressor wheel is 82mm wtf? Who would build this, 54mm turbine to a 82mm compressor. Dam you e-bay

I am hoping to get a turbo from one of the kit builders, I do kind of want to get away from Garrett just for a change and buddy running one on his build

Wheel House Motorsports · Dec 25, 2012

WOW. thats wild!! that is huge.. sled should love it!! who cares!? try it!!

Boyko · Dec 25, 2012

You alway have good advice

So after a few spiced rums to settle me down I decided to run this thing, It’s only a hour or 2 or 3 to swap it out with a real turbo. I have to shoe horn this thing in so I cut the inlet down

Vertical Asshauler · Dec 25, 2012

Boyko said:
Kind of hit the wall with this turbo, the compressor wheel is 82mm wtf? Who would build this, 54mm turbine to a 82mm compressor. Dam you e-bay

In this picture you are measuring the exducer part of the wheel. You need to measure the inducer side to determine the size of the wheel.

None the less, this is an interesting build!

Wheel House Motorsports · Dec 25, 2012

Vertical Asshauler said:
In this picture you are measuring the exducer part of the wheel. You need to measure the inducer side to determine the size of the wheel.

Garrett numbering uses the compressor exducer for the sizing.. so 2871 is a 28 exhaust side and a 71mm exducer on the compressor. so indeed. that is a very oldly put together turbo..

Glad to see you got things under control and gonna have fun with it!!

Boyko · Dec 25, 2012

inducer on a 2860 is 47mm this was 57mm a beer can is 62mm

Here is the garrett and the dumb turbo

Boyko · Dec 25, 2012

Ski-Dooin it said:
Garrett numbering uses the compressor exducer for the sizing.. so 2871 is a 28 exhaust side and a 71mm exducer on the compressor. so indeed. that is a very oldly put together turbo..

Glad to see you got things under control and gonna have fun with it!!

I will have fun with it if it spools below 7900 rpm LOL

Wheel House Motorsports · Dec 25, 2012

Boyko said:
I will have fun with it if it spools below 7900 rpm LOL

i have 100% faith its gonna be a ripper. bottom end for days!!

Boyko · Dec 25, 2012

Here is a pick of a mock up it is a tight fit, Justin Silber has been helpful and sold me a few key pieces

Boyko · Dec 25, 2012

Here are the air boxes we are running velocity stacks in both, one is a water to air.

And the heat exchanger

Boyko · Dec 25, 2012

Ski-Dooin it said:
i have 100% faith its gonna be a ripper. bottom end for days!!

I hope your right

I did get 150.00 rufunded from the e-bay seller so she is now a 50.00 turbo LOL

Visi · Dec 26, 2012

So sick. Watching this!

dvst8r · Dec 27, 2012

That is a very strange turbo, it is like someone put a GT35 compressor on a GT28 turbine, so a GT2882 if such a thing existed. I would be more worried about surge then where it will make boost.

I would expect also that you will run out of turbine long before compressor. I am assuming you will be monitoring drive pressure? You may only get 5 or 6psi out of that cdm turbo before the drive starts to sky rocket, with that tight exhaust and big compressor.

Now that it is a $50 turbo you really have nothing to loose. LOL

I love watching your builds, looking forward to updates.

Boyko · Dec 27, 2012

Ya it is a weird one...... The seller said that is what the market was demanding? It does have some balancing grinding on it. I think the exhaust pressure will be high (+5psi before boost :heh:

) as it is tiring to get the thing spinning to around 80,000 rpm at that point the boost should rocket up pretty fast. Hope I do not have to pull to much fuel off the bottem.

Boyko · Jan 1, 2013

Starting to stuff thing in the sled for the last time here the 2860 sled with the air box in and the t-map mounted to it.

Mine is getting a little crammed up ……... So I had to cut it up

Had to run the cooling for the engine through the frame, forgot about all the
hoses when I was mocking it up

I am using a micro pump for the water to air, its small but it really cranks the
fluid through and only 1.2 amp draw

The water to air is a semi close loop, engine coolant out of the throttle
bodies (via 1/4” line) into the turbo from there it goes into the water to air
and then back to the factory surge bottle

So What The He11 Does Work.... Build

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