best turbo?

sy538

New member
Re: best turbo?

I've got a 10cm so I'm not too worried about it, but it would be nice to have just to make the wastegate a little better then slightly too small with no cat.
 

SY2455

70's Veteran
Re: best turbo?

They (12 CM housing) are made to fit a stock sized Sy/Ty turbine wheel.

So if any of you guys want a 12 CM turbine housing for your stock turbo, it will bolt right on.

I had to machine the one I got to fit an "H" wheel.

They are pricey, see if Hahn will sell it for any less, because that's the one you would need & it does not hurt to ask.

I had to also open up the entry on the turbine housing to match the Stock Sy manifold, it was really small.

What machine work did you have to do to fit the "H" wheel ? Do you know if the Hahn housing is thick enough for this machine work ?
 

black cat

New member
Re: best turbo?

i need some numbers.like the exhaust a/r . 48 , 63,80 etc. i think 63 would be best for stock converter. the compressor side 50 60 70 a/r. there is a lot of combos.to look at. the 20 g with the 10cm housing sounds good. but hard to find in canada. maybe a garret or precision?
 

Beavis

Still plays with trucks
Re: best turbo?

Find a local shop to rebiuld it and put in one size larger wheel. Like a 20g. Leave the exhaust houseing stock if you are gonna use the stock converter. Maybe go up to a 10cm2 exhaust and of caorse a custom tune to make it all nice and smooth.
 

Beavis

Still plays with trucks
Re: best turbo?

i need some numbers.like the exhaust a/r . 48 , 63,80 etc. i think 63 would be best for stock converter. the compressor side 50 60 70 a/r. there is a lot of combos.to look at. the 20 g with the 10cm housing sounds good. but hard to find in canada. maybe a garret or precision?

Talk to the boys at Cambell auto. they are vendors on here.
 

Scubanme

New member
Re: best turbo?

Does anyone know if any of the new Garrett GTX turbos are compatible in size for a Sy?
I used a shop called G-Pop to machine my last set of turbos to except a larger comp wheel and they did ok, they took a month to get it back to me was the down side.
 

black cat

New member
Re: best turbo?

Talk to the boys at Cambell auto. they are vendors on here.

stock turbo is long gone except for the exhaust housing. it was wrecked when i bought it. i put on a garret gt 30 with a 50 a/r which bolted right in.but something happened to it.it was a grunty setup.but it seemed a little flat up top. just want that happy medium
 

It's just a six

Super Member
Re: best turbo?

What machine work did you have to do to fit the "H" wheel ? Do you know if the Hahn housing is thick enough for this machine work ?

You would need the turbine housing opened up to fit the larger "H" wheel turbine blade.

I had my 10 CM housing machined to fit the "H" wheel, that one was a bit thin but still enough material for the DP to seal. No problems w/the 10 CM.

Here is a pic of the 14, 10, & 8 CM housings. LFT to RHT

You can see the middle pic is the 10 CM housing & it get thin where the DP bolts on.

The 14 CM housing on the left is machined to fit the "H" wheel & has a lot of material left.

The 12 CM housing I had machined has a lot of material left & basically looks as thick as the 14 CM housing.

IMG_5777.jpg


I never took a pic of the 12 CM housing it's currently on the Sy.

If the Hahn 12 CM housing is a Mitsubishi like mine is, it should be plenty thick enough to machine for the "H" wheel.
 

SY2455

70's Veteran
Re: best turbo?

So did you just have to machined out the Housing to fit the "H" ? Was it machined straight though so the bore is the same all the way ? What did you gain by using the "H' Wheel ?
 

dgoodhue

BuSTeD 4.3
Re: best turbo?

What are your plans for tuning and injectors? A stock turbo running high boost can pretty much max out the stock injectors.
 

It's just a six

Super Member
Re: best turbo?

So did you just have to machined out the Housing to fit the "H" ? Was it machined straight though so the bore is the same all the way ? What did you gain by using the "H' Wheel ?

Yes, the bore is the same all the way through. I believe the contour/curvature of the turbine wheel has to be machine to mirror the curvature of the turbine wheel also.

Using a larger wheel will give the exhaust more leverage to turn the wheel & more leverage to turn a larger compressor wheel.

It will allow the the exhaust to breath better,give you more power everywhere.

There are 10, 11 , & stock 12 bladed "H" wheel turbine wheels.
One CO ,was machining a 10 bladed Garrett turbine wheel to bolt right into the TD06H turbine housing.

I was thinking to get the modded 10 bladed Garrett wheel, but have not done it as of yet.
 
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SY2455

70's Veteran
Re: best turbo?

Bringing up old post for a few question.

I have done machineing myself to the center/cartridge section to fit the 60-1 wheel.
Now I am in the process of machineing the compressor wheel to fit onto the cartridge.

One CO ,was machining a 10 bladed Garrett turbine wheel to bolt right into the TD06H turbine housing.

I was thinking to get the modded 10 bladed Garrett wheel, but have not done it as of yet.

If I may ask some questions about your 60-1 wheel install.

1. What machineing did you do to the center/cartridge ?

The reason I ask is this, I have a center car/cartridge I cannot use for a stock turbo anymore and if I can use this section to machine for a 60-1 wheel, then I don't have to use any of my other turbo's.

2. Which company was machining a 10 bladed Garrett wheel ?

3. Piece of three inch 3x 3 billet stock.

When you did this.. Did you machine off the the old turbine inlet then do the welding and machine work on the housing ? Thank You for the help. If you don't want to reply here, you can send me a PM.

I was talking with Hahn earier today and they told me that they no longer stock the 12CM housing because the demand for them wasn't there :tdown:. They are looking into getting 1 for me :tup:.
 

It's just a six

Super Member
Re: best turbo?

I had to machine the back side of the 60-1 compressor wheel flat.
I believe they make compressor wheels flat & convex on the back side.
My 20G compressors back side was flat so I machined the 60-1 wheel I bought flat.

I had to machine the center hole bigger of the compressor wheel also.
That is it for the center cartridge.

The Co. that was modding 10 bladed Garrett turbine wheels was on Ebay. I have not seen them lately, but maybe an internet search could come up w/something.?

With the billet 3X3 aluminum, I machined the compressor covers OD of the inlet the same diameter, just further down, then I machined the 3X3 piece aluminum .001-.0015 smaller hole than the compressor covers OD, for an (interference fit).
My friend told me he needed for me to grind open the area around the compressors inlet so he can reach in w/his tig welder, so I opened up the area w/a carbide cutter.

Then I heated up the 3X3 aluminum piece to about 200+ degrees F & quickly slid the 3X3 piece over the compressor cover.
I then sent the compressor cover to a Turbo specialist Deadbolt (not in business anymore?) to machine the compressor cover to fit the 60-1 wheel.

When they machined for the 60-1 wheel, they machined though the original aluminum section of the compressors inlet.

Hope that makes sense & helps you out..:tup:

Bringing up old post for a few question.
If I may ask some questions about your 60-1 wheel install.
1. What machineing did you do to the center/cartridge ?
The reason I ask is this, I have a center car/cartridge I cannot use for a stock turbo anymore and if I can use this section to machine for a 60-1 wheel, then I don't have to use any of my other turbo's.
2. Which company was machining a 10 bladed Garrett wheel ?
3. Piece of three inch 3x 3 billet stock.
When you did this.. Did you machine off the the old turbine inlet then do the welding and machine work on the housing ? Thank You for the help. If you don't want to reply here, you can send me a PM.
I was talking with Hahn earier today and they told me that they no longer stock the 12CM housing because the demand for them wasn't there :tdown:. They are looking into getting 1 for me :tup:.
 
Last edited:

SY2455

70's Veteran
Re: best turbo?

I had to machine the back side of the 60-1 compressor wheel flat.
I believe they make compressor wheels flat & convex on the back side.
My 20G compressors back side was flat so I machined the 60-1 wheel I bought flat.

I had to machine the center hole bigger of the compressor wheel also.
That is it for the center cartridge.

With the billet 3X3 aluminum, I machined the compressor covers OD of the inlet the same diameter, just further down, then I machined the 3X3 piece aluminum .001-.0015 smaller hole than the compressor covers OD, for an (interference fit).
My friend told me he needed for me to grind open the area around the compressors inlet so he can reach in w/his tig welder, so I opened up the area w/a carbide cutter.

Then I heated up the 3X3 aluminum piece to about 200+ degrees F & quickly slid the 3X3 piece over the compressor cover.
I then sent the compressor cover to a Turbo specialist Deadbolt (not in business anymore?) to machine the compressor cover to fit the 60-1 wheel.

When they machined for the 60-1 wheel, they machined though the original aluminum section of the compressors inlet.

Hope that makes sense & helps you out..:tup:

I followed everything except the center cartridge. When I re-read your posting I can't find that you did anything to it :dunno: Help me.
 

It's just a six

Super Member
Re: best turbo?

I made the hole bigger in the 60-1 wheel. The hole is too small to fit the Mitsubishi turbine shaft.

I had to machine the 60-1 compressor wheels backside flat, it was convex.
Then had the whole assy rebalanced.

I bought a rebuild kit from Ebay.

That's it.
 
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