goodlucksilvia
08-09-2020, 07:26 PM
I have a stock redtop 1992 sr20det. I just refreshed all of my turbo gaskets, so far everythings been driving smooth and pulls as it should.
It had the manifold to turbo gasket leaking before and sounded like a tractor, but thats all gone. No power loss now. Only other thing id note is that there was a leak because i hadnt tightened the coolant return line on the turbo enough but that was fixed.
I also repaired part of the egr that connects into the intake box but i dont think that should make a big difference because before then it ran fine.
However there's a new noise now. It wasnt happening at first at all, and it comes and goes now but happens a good 90% of the time I'm getting onto full boost while accelerating quickly. It doesnt come on until FULL boost, up until then everythings all good.
Its loud enough you can hear it over the sound of the engine& exhaust.
It sounds like a shout of a higher pitched rattling or scraping noise.
It is not a turbo death whine noise.
The only other thing i can think of is wastegate. I didnt thoroughly check it myself when i had the turbo apart, but I do at least remember the penny and arm not appearing to be loose in any way. So far, i know there was no shaft play from my memory as well, it felt and looked solid.
Tomorrow I'm going to check the shaft out for play again, and see from the outside if the wastegate arm has play....
Other than that, I wanted to ask around on here if you guys have any ideas of what it could be. I've owned this SR for a year. I've never owned a turbo car before, these are all new things to me but I know that sound isnt right.
Any pointers or speculations would be greatly appreciated. I cant seem to find anything online about this.
It had the manifold to turbo gasket leaking before and sounded like a tractor, but thats all gone. No power loss now. Only other thing id note is that there was a leak because i hadnt tightened the coolant return line on the turbo enough but that was fixed.
I also repaired part of the egr that connects into the intake box but i dont think that should make a big difference because before then it ran fine.
However there's a new noise now. It wasnt happening at first at all, and it comes and goes now but happens a good 90% of the time I'm getting onto full boost while accelerating quickly. It doesnt come on until FULL boost, up until then everythings all good.
Its loud enough you can hear it over the sound of the engine& exhaust.
It sounds like a shout of a higher pitched rattling or scraping noise.
It is not a turbo death whine noise.
The only other thing i can think of is wastegate. I didnt thoroughly check it myself when i had the turbo apart, but I do at least remember the penny and arm not appearing to be loose in any way. So far, i know there was no shaft play from my memory as well, it felt and looked solid.
Tomorrow I'm going to check the shaft out for play again, and see from the outside if the wastegate arm has play....
Other than that, I wanted to ask around on here if you guys have any ideas of what it could be. I've owned this SR for a year. I've never owned a turbo car before, these are all new things to me but I know that sound isnt right.
Any pointers or speculations would be greatly appreciated. I cant seem to find anything online about this.