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Old 12-22-2010, 01:45 AM   #1
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Default Nissan Silvia s15 turbo = GT2560r

I sort of established that the s15 turbo is a GT2560R.
If that is the case, since the s15 turbo is generally a lot cheaper than the GT2560r
http://cgi.ebay.com/ebaymotors/Genui...#ht_1262wt_722

should I be using that instead? Is there something I m missing out here?
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Old 12-22-2010, 02:45 AM   #2
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There are a few different S15 turbos but the one with the part number containing 91F00 is the dual ball bearing one that's the same thing as a 2560. More commonly what you'll find for sale is the 69F00 journal bearing type. Either will work fine on a Miata, in fact before I decided to throw out the budget and start shitting hundred dollar bills I was looking for a cheap used S14/15 turbo. The Nissan ones are presumably cheaper because an OEM got a discount for buying a **** ton of them, but that one you linked should be identical to a 2560.
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Old 12-22-2010, 05:49 AM   #3
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91F00 is the one I am looking at. The only difference I know is that it comes with Nissan inlet and outlet flange. It probably cost <$50 to get the flange made at the intercooler pipes.
At that pricepoint, it is a lot cheaper than 2560, which makes me wonder if I should buy the 2560 or the S15 turbo and hence asking here if there is anything different that I am unaware of.
If there are no difference, I guess the decision is made. Thanks.
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Old 12-22-2010, 11:20 AM   #4
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You can buy adapters for the compressor inlet and outlet. ATP sells them and there are cheaper ones on ebay too.
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Old 12-23-2010, 08:52 AM   #5
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Yes they are the same as the GT2560R. You just have to make sure you check the tag like mentioned above. I think they are cheaper since you rarely know the history and they came on cars built 15 years ago so you know it's probably not new. If you live in a Navy town like I do, they tend to pop up occasionally listed as simply a T28. Sailors bring them back from Japan for cheap or are upgrading their SR20DET and getting rid of the stock turbo. I bought one from a guy who was selling his to replace it with a "ball bearing" turbo. He didn't realize he already had one! The key is knowing what to look for and checking the tag. You can find out a ton just googling the part number on the tag. Some of the key things I look for in pics if you can't see the tag are the bolt on compressor housing and the heat shield bracket on the front with two encapsulated nuts.
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Old 12-23-2010, 10:33 AM   #6
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Clay, I am referring to a brand new Nissan turbo. Most respectable Nissan vendor are selling these substantially cheaper.
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