The mazda garage says that there is oil inside the conduit that comes from the turbocharger. Several years ago I rebuilt the turbocharger on my 87 rx7. Does anyone know where I can get a rebuild kit for the 93. Or does anyone know where I can get mine rebuilt at a reasonable cost.

 

turbocity.com

 

need more details...

can you buy rebuilt center sections for the FD turbos there? i couldnt find them. infact, i couldnt find anything about FD turbos on there

edit: just found a rebuild kit, which appears to be for only one of the twins, but it says "twin" ???

 

you need two kits: total ~$300 dollars.

 

How difficult is the job to rebuild and are instructions included with the kit?

 

How difficult is the job to rebuild and are instructions includced with the kit?

 

Rebuilt stock turbos never last. Give Bryan at BNR supercars a call. He can set you up with a nice replacement. 205-640-1193

 

for a helluva lot more than 300 dollars

 

Yup, but you get what you pay for. Brand new turbos don't leak or smoke.

Rebuilt twins have a nasty habit of doing that. Hell, why do you think BNR doesn't offer rebuilt twins anymore? Even having them professionally done, it's a crapshoot. He's posted here before about the 'why,' do a search under username bryan@bnr to see what he has to say.

 

I still need to know the following: How difficult is rebuilding the FD terbocharger with a kit from Turbocity? Do they include instructions with the kit? I agree $300. is a lot less than a new or rebuilt one. I also have to replace the engine and it is getting more expensive as i go. Need some good advice.

 

Hey Jimbo.

I wouldn't even try rebuilding the twins. They are unrebuildable from the factory. Every set has 1 bad turbine wheel b/c of turbine seal wear. i don't know why just one has it but it always does. If you machined the groove for a larger piston ring, the ring would wear out premature. The center housings of the turbochargers deflect b/c of heat, so when you go to putting new piston rings in those unround bores, they will leak. Also the rebuild kits that manufacturers have the piston rings are badly off spec. The piston rings they use are standard width for a T25 which needs to be .003" thicker like the OEM turbine piston rings.

I can go on and on but it may bore you .

Bryan@BNR
205 640 1193

 

Jimbo, FYI most FD folks who don't want to fork out $3k for new turbos usually go with low mileage used turbos for $300-600. While buying any used parts involves some risk w.r.t. how it will perform, it's still cheaper and usually works out better than the turbo rebuild.

Dave

 

Bryan
How much do you charge for the turbocharger"

 

Dave
Where is a good place to look for a used turbocharger, other than E-bay?
Jimbo

 

The classifieds here on these forums. Some sellers bring low mileage parts over from Japan, and those can be a good value. Ebay has some too, but rely on the photographs, history of the part (did the seller actually run the turbos to know they don't leak, or simply pull them from a used longblock without knowing anything at all). Mileage on turbos can be very hard to know, but after looking at enough sets you can tell if the accumulated rust and scaling agrees with the stated mileage.

Insist on seeing the turbos in good quality photographs, and be sure to see the manifolds where they bolt up against the engine exhaust manifold. Every set of stock turbos develops cracks here, and you don't want to see more than a couple of hairline cracks on low mileage turbos. The compressors should show absolutely zero axial shaft play, and maximum a millimeter or so of radial end play.

There is always risk that you will find they blow oil and have to return them. It would probably be best if you found a set locally and agreed on a 30day return policy or something. Even though this sounds like a massive hassle, you can get really decent turbos for under $500. Your only other options start at well over $1000.

Dave

 

There was a coating of oil inside the duct. Before the engine blew its seals the turbocharger was working ok getting around 10 psi at full throttle. At idle the vacuum reading was around 16 inches of mercury. At startup it would sometime smoke a little
but not alot. When it blew the car was being driven on city street and I had just shifted down, then all hell broke loose. The car then would barely run. I certainly don't have any desire to spend 3 thousand or more on a new turbo, as I still need to replace the engine.
Jimbo

 

Isn't it acceptable to have some oil coating after the turbos? Do you have any other reason why they are bad?

 

Les
No I remember a couple of years ago I noticed some oil film in the ducts, and after the engine blew I had the shop look at it and the foreman said there should not be any oil in there. I would like some opinions and advice on this matter. They are going to remove the turbo so I can either rebuild it myself or have it rebuilt or replaced. I had a 87 turbo and rebuilt it sucessfully.
thanks Jimbo

 

There can be a little bit of oil. A film, really. If it pools in the lower intercooler piping elbow, it's too much.

But Jimbo, I recall you saying these turbos have about 100k. Now is the best time to change them - usually 100k is a pretty good life for stock turbos. They're not *that* hard to change later, but now is by far the easiest, and you'll be using all new exhaust gaskets.

Dave