Ok, so I just had an AST, DP, and a Fluidyne radiator installed and discovered that my primary turbo is leaking oil. So I'm looking to replace the turbos.

I don't want to have to stress about failing CA emissions when the time comes and it seems to me that if I were to go single, I would definitely fail. So the only alternative is to replace the stock ones with rebuilds or new Jspec ones. What would you recommend?

Where can you find these turbos for a good price? If I upgrade with the Jspec RZ abraidable turbos, will I need to upgrade my ECU or fuel?

Thanks guys!

PS - How long do you think I might have with a leaking turbo? Will my turbo just fail to produce boost or will turbo internals fail and be flung into the rotors causing a major engine failure?

 

http://laujesse.tripod.com/4jspec/id10.html

well, thats your turbos there. Im not sure if you would need the extra fuel to them or not but I would think that it would be a good idea.

Any pros want to help me out here?

 

How much are they?? just have the stock ones rebiult, 7-800 bucks.

 

i had my turbos rebuilt by Turbocity in Anaheim for about 750 with a failing second turbo.

I'm sure it could possibly cost less.

That's a good route to go.

 

My secondary leaks oil, Im thinking return line but I cant tell... Whats the usual problems that cause that?

 

I bought a set of these turbos from Jesse. He posted them to have about 250 miles on them. When I received them, their condition bears him out; they are clean. (I also bought a set of '99 wheels from him. he told me of some minor scratches on them before I bought. IMO, a straight shooter.)

I have not installed the newer turbos yet as mine are running fine. Just bought them when the time comes as I have 115K miles on the car, most of that running 12-13 psi boost. At any rate, over on the PowerFC forum I asked a similar question as you, that is, would I need to change my maps when I changed to these turbos. The consensus was "no."

 

With the RS/RZ turbos alone, you would be fine with the US-spec ECU. But, as you mentioned, you've installed a downpipe; and with the smaller turbine wheel and re-designed compressor fin setup, you may experience some fuel cuts at higher rpms with the RS/RZ turbos. Fuel cuts aren't the worst thing in the world, but it's not something I would recommend leaving as is. If you don't want to spend the money on an ECU upgrade, you could go the cheaper route and get a fuel cut defenser (Greddy makes one).

In response to your original question, I have the RS/RZ turbos and, YES, they are worth it. If you want an answer on rebuilding your turbos, just do a search for "rebuilding turbos". You should find all the info you need there.

 

Thanks for the info! =)

So how much did you get the turbos for? The only prices I've seen were approximately $3000 for new ones.

 

Why not go single w/ the apexi rx6? It allows you to retain the air pump (making it *possible* to pass emissions) and plus you could clean up the engine bay and get rid of alot of the heat the twins produce. Less complex=less potential problems=happier fd owner

 

www.jt-imports.com

 

Eek...maybe I'm just paranoid, but I view fuel cut defensers as the spawn of satan. Seriously, I hear he uses one in his Supra.

The FD has enough problems staying rich enough under boost due to the inability of a speed density system to determine the amount of air on the fly...all it has to go on is boost pressure. Since an FCD basically lies to your ECU and tells it there's less boost than there really is...that just seems like a really bad idea to me.

jds

 

I have the 99-spec turbos with a mild street-port, dp, hi-flow cat, cb, & intake all on the stock ecu. I have made sure that I dont' spike, and that I stay at 10psi.
No probs other than maybe needing upgraded ignition

 

See my sig for mods. Definitely worth going J-spec Type RS/RZ Twins...

 

Are the JDM turbos a exact fit to the US setup? Or will I have to do some rigging if I do get some JDM turbos?

 

True. But, there's some fab work necessary for the single turbo and there's other costs associated with it ... new intake, custom piping to the IC. And, now you have boost lag. Really depends on what you want from the car.

As far as the fuel cut defenser, you could go another route and install the Home Depot manual boost controller (needle valves). Very easy to do and CHEAP. Only downside is having to adjust with the weather changes. Different strokes for different folks.

HeatTreated, the RS/RZ turbos are an exact fit. Pick up some new gaskets from your local Mazda dealership, dig up your penetrating oil, and bolt 'em on.

Hashiriya, the RS/RZ turbos are kinda expensive. Well ... I never said they were the affordable option, now did I?

 

I thought the rx6 was only marginally more laggy than the stockers? I dunno it just seems like the benefits far outweight the ummm...not benefits. Regardless, I think the j-spec turbos would be cool. For the cost I just think you may as well get more power and more relability.

 

'99 J-spec twins were worth the $2599 I paid for them @ SR Motorsports back in Nov (brand new in a box).

 

sleeper, redrotor: whats the max you run these at? and how much reliable boost do you think they are capable of?

 

The 99's list for 3000 on that website, why not just get some BNR Stage III's, and use the left over money to upgrade the fuel system?

 

That was my exact thought as I read that post. When I heard $3k for 99 spec's, I'm thinking BNR stage 2's for $1600, and upgrade the fuel system if you want.,but save youself a grand in the process. Not worth it in my opinion to get 99 spec turbos when the alternative is cheaper, and comes with a warranty from people I've heard nothing but good reviews about.