Don't let the oil feed line get get wedged in between the housing and subframe. Bad things can happen

 

Dude That sucks...so what happened?

 

I noticed lots of oil dripping under the turbo side. I reached under the turbo and felt oil on the feed line so I pulled the line out from under the turbo and noticed the braided line was crushed paper thing and was leaking. I pretty much new my bearing were shot. I took of my filter and just as I suspected. My wheel had the most shaft play I've ever felt on any blown turbo. Weeble wobble wheel is that I've got. I'll take it apart today and see if there is any other damage besided the bearings. I'll have it rebuilt this week but it's just a pain in the ***.

 

go BIGGER!!!

 

yep, lack of oil took out your bearings...hopefully you caught it fast enough that the compressor or turbine wheels are not shot

good luck

Steve

 

How was your turbo responding(boost wise)? I have HKS 2835s...and I'm have boost problems, with a little shaft play. I'm not sure any play is acceptable.

I have pressurized the system for boost leaks(none) It's either my turbo's or my wastgate's. I can't boost past 1.5 bar...sometimes lower. The problem has gotten progressively worse. I have been through a few boost controllers as well, trying to figure out the problem.


I know I drive a Supra But I couldn't get anyone at the Supraforums to help or answer


Thanks for any advice.


Scott

peace

 

maybe your wg springs aren't strong enough to handle that much boost. they're getting pushed open by the boost pressure despite your boost level settings.

 

Scott, what wastegate/s are you running? Word is the HKS racing gates are notorious for blowing pressure past the valve guide -though you should have seen it in your leak test.

 

that sucks... how did the line get stuck in your subframe ???

 

Not sure how the line got stuck in between the turbo and the frame but I'm thinking that it was from the engine moving around upon launches at the track. Did I mention that it happened at the track? The same night my diff busted.

Here are the pics.





Little shot of the alcohol injection will quickly hooked up before the track....

 

Well... I noticed the damaged turbo at the track after making a couple passes. I didn't notice anything wrong until I felt the wheel. I ran a 12.3@119 with 14psi right before noticing the busted turbo.

 

http://mkii91t.homeip.net/Misc/rx7/diff/DSC01647.JPG

Why is there a big hole there?

 

because its broken fool

 

I broke my differential that same day. We're putting in a solid rear end this week. We're going with a Ford 8.8 inch.

 

Question for you with the way you have the alcohol injection setup! Is the feed line to the injectors split for both feeds or do you have the front rotor feed, then the rear rotor feed later in the main line? Looks like they are T'd off a main feed line.

Would it be better to have a Y type connection so that you can ensure that they both get the same amount of pressure per jet. Or swap them around, as we know the rear rotor runs hotter, so with some extra cooling this would help things out a little.

Just an idea.

Dan

 

Yes, Like I said we threw this injection system together right before leaving for the track so we had to use misc parts laying around the shop to get it going. I'll be cleaning it up and finishing it off shortly.I hate having wires and hoses running all over the place so I'll end up hiding most of it. I'll end up going with a Y block like you said.

 

I'm running HKS GT wastegates. Could be the springs wearing out? They are the 1.3 springs(minimum boost I can run. I have run up to 28-29psi plenty of times.

Sorry for the question. I don't want to high jack your thread.


Scott

peace

 

You might need to adjust your wastegate springs. They tend to back themselves out under heavy vibration.

 

Eric are you related to Vosko by any chance? LOL

 

come on now.

 

That one hurt