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Ebay evoIII theroy

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nuclearr

15+ Year Contributor
1,407
15
Jun 22, 2004
Slidell, Louisiana
I was thinking and came up with a theory to why somany eBay EVO3's fail. I know there is problems with the metalurgy. But if the have the t-3 size shaft would they not require the same amount of pressure/flow? If this is correct the factory oil feed line (from the head) would have too small of an orifice for the eBay 16gs.

I am running an eBay 16g from the of with an unrestricted -4an on my 7bolt with balance shafts intact. I have put over 1000 miles on this turbo and it is used. I know a bad make a difference but thought I would share my idea.
 
My car came with a bastard 14/16g. It's a 14b with the hot-side pieces of an ebay evo3 16g. The 14b center was blown, so I replaced the turbo with a used 14b. Man, you could really feel the difference. The stock chinese 16g hot side really does flow noticeably better than an MHI 14b. I contacted Justin, he said he can get Taiwanese 16g compressor wheels for a decent price. They fit MHI turbine shafts. Thus, if I send in my blown bastard turbo, get a standard rebuild, and add the 16g compressor wheel, I get an MHI evo 3 16g, basically new, for under $250.

I just thought that was a good reason not to throw away my old ChinaBay turbo. My $.02.
 
I ran a used Ebay 16g for 25k miles before it went out. Only reason it went out was because my buddy sea-foamed my car and never let me know. I was on a stock block 7bolt with balance shafts in tact as well
 
I ran a used Ebay 16g for 25k miles before it went out. Only reason it went out was because my buddy sea-foamed my car and never let me know. I was on a stock block 7bolt with balance shafts in tact as well

Whats wrong with seafoam?
 
I just attempt to avoid them at all times regardless.. Thats just me though.
 
I was thinking and came up with a theory to why somany eBay EVO3's fail. I know there is problems with the metalurgy. But if the have the t-3 size shaft would they not require the same amount of pressure/flow? If this is correct the factory oil feed line (from the head) would have too small of an orifice for the eBay 16gs.
Some of the eBay 16G turbo "kits" come with 1G-style feed lines from the head, and many of these turbos have lasted fed as such....so that theory is out.

The center housing design is slightly different internally than that of a MHI, but the oiling theory should be the same....journal bearing and shaft diameter do not mean as much as the diameter of the bores carrying oil to the journals and the thrust plate.
I am running an eBay 16g from the of with an unrestricted -4an on my 7bolt with balance shafts intact. I have put over 1000 miles on this turbo and it is used.
...and I know someone who put around 32k on a used MHI Evo III 16G fed unrestricted -4AN from the filter housing on his stock 7-bolt. Apparently there wasn't enough pressure to do any damage, but that's not the case for some DSMers out there.
My car came with a bastard 14/16g. It's a 14b with the hot-side pieces of an ebay evo3 16g. The 14b center was blown, so I replaced the turbo with a used 14b. Man, you could really feel the difference. The stock chinese 16g hot side really does flow noticeably better than an MHI 14b. I contacted Justin, he said he can get Taiwanese 16g compressor wheels for a decent price. They fit MHI turbine shafts. Thus, if I send in my blown bastard turbo, get a standard rebuild, and add the 16g compressor wheel, I get an MHI evo 3 16g, basically new, for under $250.

I just thought that was a good reason not to throw away my old ChinaBay turbo. My $.02.
...or you can buy a Big 16G or 20G with a junk turbine housing or without a turbine housing at all, and pick up a new Chinese Evo III turbine housing on eBay for $90 or so. Either way you'll have around the same money wrapped up in it.
 
Some of the eBay 16G turbo "kits" come with 1G-style feed lines from the head, and many of these turbos have lasted fed as such....so that theory is out.

The center housing design is slightly different internally than that of a MHI, but the oiling theory should be the same....journal bearing and shaft diameter do not mean as much as the diameter of the bores carrying oil to the journals and the thrust plate.

...and I know someone who put around 32k on a used MHI Evo III 16G fed unrestricted -4AN from the filter housing on his stock 7-bolt. Apparently there wasn't enough pressure to do any damage, but that's not the case for some DSMers out there.

...or you can buy a Big 16G or 20G with a junk turbine housing or without a turbine housing at all, and pick up a new Chinese Evo III turbine housing on eBay for $90 or so. Either way you'll have around the same money wrapped up in it.

Thanks I was hoping you would chime in. Since I have not torn all these types of turbos down I did not know what the oil port sizes were.
 
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