Help needed with temporary smoking turbo to NA conversion.

[Jacob Villines]

Help needed with best way to run supra without turbo temporarily. I've done some searches. Most I've come up with is creating a dummy turbo.

My issue: Turbine is bent in a few places. Started smoking heavily (definately oil smoke).
To confirm it was infact the turbo causing the smoke. I locked up the turbine wheel with an aluminum rod and wired wastegate open and the smoke went away almost instantly. Major loss of power with this option and possibly screwing something else up.


What I need is a fast/easy way to run this car as N/A for a short amount of time seeing as I've just had a baby come into the world and buying a replacment turbo is not in my funding this month.

What do you recommend? Block off oil lines with paper gasket and turn down boost? Any way to reroute the AFM to the throttle body easily? Open to any ideas as crazy as they may be.

And also. Need direction for easiest way to remove the turbo with just one person and list of best tools to use for the job. (My job allows me access to any tools I will need).

 

[hvyman]

I'd try to get a used a turbo either good or with alight play and get a rebuild kit and do it your self if your mechinally inclined. If not just find a decent used one for cheap and don't boost.

Cannot use the gte electronics for a na application. It will go nuts.

 

[jake8790]

It's not going to work. You would need an n/a exhaust manifold and downpipe. Then you have open oil lines, open coolant hoses, and it probably wouldn't run right. Best bet is to find a used turbo for cheap, then save for a new one. Look on craigslist and ebay. Replacing the turbo is pretty easy. unbolt the downpipe and turbo elbow. take off the accordian pipe. take off the coolant hoses. take off the support brace. get under the car and take off the oil lines from the turbo it's either a 10mm or 12mm socket and long 1/4" drive extension. unbolt the 4 nuts holding on the turbo with a 14mm wrench.

 

[planemos]

Just remove the turbine exhaust wheel that's all you have to do. Except you more than likely would have to take off the turbo. But it would be cheap to do. More work than money. I know for a fact it can be done because I know a guy who has done it and has driven his car around for months like that.

 

[IndigoMKII]

This thread makes me feel like :3d_frown:

 

[IJ.]

Why wouldn't it "run right".....

Seriously guys think before posting.. :nono:
(hint: GTE's run fine off boost)

 

[Jacob Villines]

LOL. Yeah. I'm reading the replies and thinking why would I buy another turbo when I said I couldn't right now.

@Planemos: As far as removing the exhaust side turbine... What about intake side? Could I let it spin freely to keep from having any intake air restriction?

And IJ. I know you're right about it running fine without boost... At low throttle the turbine is just spinning freely creating practically no boost. Which is why I can drive the car with the turbine purposely locked into place... The turbine not spinning is causing an air restriction that I can feel when I try to go over 40% throttle.

Seems like Planemos has the idea I'm looking for. I was just wondering if anyone has done this and may have some instructions on how to do so.

 

[IJ.]

I've seen people pull the Wheels and shaft out then fit a bolt in it's place, also block off the Oil feed just in case, it's just going to run like a low comp NA.

 

[Jacob Villines]

Sounds good. I don't care about how much work it takes. I have more than enough time on the weekend to do this.


Also have to mention that this is my DD for work. So thats another reason why I'm doing this. To keep from blowing smoke all over the highway and other cars. Plus it clouds up the car and makes my clothes smell.

 

[IJ.]

You need the Water as it's part of the bypass, Oil needs to be blanked off though so you don't drop pressure.

If you take the Turbine out it's welded to the shaft so the Compressor wheel has nothing to bolt to.

 

[Jacob Villines]

Which line is oil feed? Ribbed line or Banjo bolt line?

 

[IJ.]

Banjo.

From memory it's an M12x1.25 thread so an "easy" block off would be to replace the banjo bolt with a plain bolt.

 

[Jacob Villines]

Sweet. I will try this and post an update for future applications. Thanks for the help in the right direction.

 

[IJ.]

Sweet. I will try this and post an update for future applications. Thanks for the help in the right direction.

Very welcome Jacob!

 

[bioskyline]

the collant line to the turbo can be looped with hose at the themostat housing aswell, which is common to do when going to a larger turbo that is only oil cooled.

 

[Skeezix]

If you are gonna be taking it off and pulling it all apart why don't you try to "fix" it? Mine was blowing smoke like crazy so we ripped it off and got one from buddys parts car. Well that sat for a year or two so the seals dried up and it blew smoke like crazy as well. So we take it all apart, 8 hours of cleaning all the coke and crap out of it and 77 cents later I had a new oil seal. Back together and been boosting 10~ PSI for better part of a year now, no smoke just the slight hint of oil smell on a rank deceleration.

 

[Jacob Villines]

Yea I could. But, I'm worried about balancing and whatnot. I'd rather get it repaired correctly by purchasing a new turbo.

 

[Skeezix]

The guy who jams an aluminum rod in the turbo to stop the turbine from spinning is worried about balancing. Fail. And if you're gonna rebuild it but don't have the money, just do the quick fix, get yourself to work and save your money for the rebuild and then balance it. Who knows if you can rebuild it anyway. But another thing look in the for sale section for a spare turbo. There is two right now $70 and $100

 

[Jacob Villines]

Bolt is actually a M12 x 1.25. Tried ACE hardware. Had the bolt but way too long. Went to Lowes. Found one thats close to the same length but I bought a nut and threaded it all the way to the head of the bolt to shorten the length. Works great. No leaks.

By stopping the oil flow with this bolt... Will this cause any damage within the engine? I know some people are running water cooled only turbos on the 7M.

And Skeezix. If you would read. You'd see that I'm buying a new turbo. Why rebuild a 21 year old turbo thats been rebuilt several times with used cheap parts? I jammed an aluminum rod into the turbo because the wheel is chewed up beyond usage and I'm replacing the whole turbo.

 

[planemos]

Well hopefully you can get 'er going so that you can keep going to work.