Okay, I bought my 93' RX-7 back in November of 2001, it had a rebuilt motor with only 10K on it, after purchasing it i found out that the oil pan gasket was leaking, both of the turbos were blown, and spewing oil everywhere, and the front main seal (somthing like that, dont remember what it is called) was torn to shreads. I had all of these problems fixed in January of 2002, the turbos were rebuilt by turbonetics, and made hi-flow. It is now the beginning of September, and I have taken the car in due to the second turbo going to full boost then making a hi-pitched wistling noise, and droping to around 3 psi. While the place I took it to was looking at it, they found that both of the turbos are spewing oil again(blown). Has anyone had this recurring problem, or have any ideas why my turbos keep going after 5-10K miles?
I love the car to death, but cant afford to keep replacing the turbos every 5K miles, is there something that may be causing this?

Thanks for any help u may give.

Robey

 

Turbonetics is not allways the best they tend to cut corners ,I know of an up graded set and the oiling system or groves, what ever you call it is not correct judged by a turbo shop in Nashville .The shop knows the people there and does not rate them highly.

 

Hmmm.

Who did the diagnosis? I've seen more than one shop replace turbos that were perfectly fine.

It is completely normal to have some oil in the intake tract, this does not mean the turbos are blown.

Oil pans do leak, but commonly misdiagnosed as bad pan gaskets. Usually it is the motor mounts that go through the pan.

Otherwise the noise from the second turbo isn't good. What boost are you running? Does the second turbo work? A non-working second turbo will often stay in pre-spool mode effectively overspinning it.

Jeff

 

the second turbo will spool up fully, then a whailing noise takes over and cuts the boost from 10 down to 3 psi. I have also noticed that sometimes the second turbo will work fine through 2nd gear, and sometimes 3rd, but usually after a while of driving the whailing comes back on the second turbo.

The first place I went to, back in January was Passen Motorsports. I just took the car to Jason's Shop, and Xavier took a look at it, he said the first turbo had lots of Oil in the intake track, and the second turbo also had a lil too much oil, also the BOV has been shooting lots of oil out of it, coating the back of the air filter housing.

Robey

 

care to elaborate? i have a leak that for the life of me i can't get rid of.

 

I bought my car in sept of 2000 and the guy gave me a good deal on it, so I find out why about a month after I bought it the turbo's needed to be rebuilt and I got them rebuilt in Oct 2000 the car had 59,000 on then also under a 2 year warrenty then at 64,000 leaking oil again had the turbo's rebuilt again this was Jan 01 and now I'm leaking oil AGAIN but I took it to a local mechanic does some work on rotories just to have him look at it and he says main rear seal, so I take it back to my rotory mechnic and he says he can't find the leak kinda strange so I take it to Mazda and they can't find the leak either but I'm praying its not the turbos AGAIN, since my warrenty is up and I have to pay for it now

 

Just wanted to let you know not to run your car to the 2nd turbo kicks in. This was the exact description I had when my second turbos nut on the turbo came off. It was a really high pitched whizz sound right? You can check the 2nd turbo from under the car. Just unscrew the bolts to the pipe going to the turbo (rear one) and check to see if the nut is loose. I had >3000miles on mine when they went. They were also high flow with bigger compressor wheels. Good luck.

 

send your turbos to bryan at bnr supercars. he is awesome and many would regard his stage 2s as the best bang for the buck. www.bnrsupercars.com

paul