I'm looking for a new turbo to replace the worn out stock one from my 89-91 model 13b. I'm not looking for any horsepower upgrade, just need something to replace what i have. A new factory turbo just like what i already have would be fine, but i have also found several new turbos on ebay. I don't know what the specs of the original are so i don't know which ones would match up, but from what i have read these all seem to be big horsepower turbos but their low prices make me skeptical and think that maybe they are no better than stock. I'm on a tight budget so that's why i'm sticking to stock, because i don't want to have to do all the other engine mods that come with bigger turbos. Could someone who knows what they are talking about please check out these links and tell me what they think?

http://cgi.ebay.com/ebaymotors/Parts...1%7C240%3A1318

http://cgi.ebay.com/ebaymotors/Parts...1%7C240%3A1318

http://cgi.ebay.com/ebaymotors/Parts...1%7C240%3A1318

http://cgi.ebay.com/ebaymotors/Parts...1%7C240%3A1318

http://cgi.ebay.com/ebaymotors/Parts...1%7C240%3A1318

 

Just get a replacement stock turbo.

http://cgi.ebay.com/ebaymotors/Parts...1%7C240%3A1318

A T70 is a large turbo capable of over 500HP on a 13B. It's sheer physical appearance and size should alert you that it is vastly different then stock. This particular "T70" is a made in China reproduction which is a crapshoot for quality. I've seen them run 70,000 KM, I've also seen them fail immediately. A turbo this size requires a full fuel system upgrade, full standalone, intercooler, etc. etc.

http://cgi.ebay.com/ebaymotors/Parts...1%7C240%3A1318

This turbo is a China copy of a 60 trim T4. This is a turbo that will do 400HP on a 13B. The reply above covers it as well.

http://cgi.ebay.com/ebaymotors/Parts...1%7C240%3A1318

See above. This is a China copy of a T4B.

http://cgi.ebay.com/ebaymotors/Parts...1%7C240%3A1318

This is supposed to be another T70 Chinacharger but the specs don't quite add up. I'm not sure what they are going for and that turbine side would plug up any vehicle that would run that turbo.

http://cgi.ebay.com/ebaymotors/Parts...1%7C240%3A1318[/QUOTE]

See above.

Just the physical appearance of all those turbos will tell you they are totally different then stock, regardless of how much you know about turbo sizing. In order to fit them, you would need a new manifold, fuel system, etc.

Sounds like you need to stick with the stock turbo for the time being. The stock ECU will run it just fine as long as you keep the boost just above stock levels.

 

Hey! Thanks for the info! That's pretty much what i was expecting to hear about those. But do you know where i can get my hands on a new stock turbo?? I've looked EVERYWHERE and can't find anything! All i find are ones like mentioned above

 

Ok, i stumbled across this thing awhile back and just remembered that i had it bookmarked. It looks close to stock to me! Thoughts?

http://cgi.ebay.com/ebaymotors/ws/eB...3AIT&viewitem=

 

I still wouldn't trust ebay... but that's just me.

Mazdatrix has new OEM turbos, but you're going to pay out the *** for it:
http://mazdatrix.com/d5.htm

Or I like the idea of BNR hybrid turbos, just send in your "tired" one and have it rebuilt/upgraded:
http://www.bnrturbos.com/2ndGen.htm

 

A new OEM turbo will probably shock you regarding price. I think the last time I saw some quoted it was nearly $3,000. That being the case, it's a lot more cost effective to either find a good used turbo, or have yours rebuilt at a turbo rebuilder. Check the phone book for "turbocharger service". If you can't find anyone, ask the local diesel shop because they will be able to recommend someone.

The eBay T25 you link to is actually quite a bit smaller then the stock turbo. It would make boost off of idle, but by 3000 RPM the engine would outflow it. It also appears to be a Chinacharger as the castings don't list any recognizable brand name.

 

You should be able to find a stock turbo for sale in the 2nd gen classified section.

 

The BNR idea looks pretty nice, but i also know of a turbo rebuilder that is only an hour and a half drive from my place, so i will probably just take it back to them. I think they quoted it around $300.

 

$300 is a very good price.

While you have the turbo there, have them also port your wastegate.

 

I asked around and the price was actually closer to $400 but still not bad compared to paying almost $3000 for a new OEM turbo! Should i ever decide to run a full standalone what kind of power could i safely get without porting, ya know just a fuel system upgrade combined with the stock turbo?

Thanks to everyone for being so helpful!

 

my sugettion would be the Gready turbo.. ive had good experiecne with it in my s4 13B that i had put in my miata... holds and produces good boost and is a strong turbo

 

The wastegate(s) should be ported to reduce the tendency for the turbo to boost creep. It's not about making more power, but giving better boost control when the intake and exhaust are no very restrictive. If the turbo is taken apart anyway for a rebuild it's kind of crazy to not port it.

Here's an example of what I'm referring to, though with a stock S4 turbo:
http://www.aaroncake.net/rx-7/s4wastegate.htm

 

Sorry, i forgot to specify. I meant intake porting, etc. Or would any of that be required??

 

you dont need to port out the intake side... if you clean out your manifold and get it polished and run an after market intake hks or even off brand like the autozone intake piping youll make good power and have a better sound to you engine...

 

Intake porting (I assume you mean intake ports?) requires engine disassembly. Any sort of porting you do to the engine is going to move you closer to requiring a standalone. You can get away with a street port on the stock turbo but beyond that it means a full turbo upgrade and thus a standalone.

If you are referring to just porting the intake manifold, don't bother. Waste of time.

 

im n/a and fully ported not just intake or street ported. my housings are lapped and everything is done correctly thats why im on standalone

 

yeah, stock turbo...find one cheap and get it rebuilt..it will last a long time

 

u should get that gt35r i heard alot of good thangs about it

 

The GT35R, being an aftermarket turbo, requires all of the modifications that the original poster specifically said he is not interested in doing.