tplociniak
Go Kart Newbie
- Location
- NEPA
- Car(s)
- 2017 Alltrack SEL
did an is20 swap about 4000 miles ago, turbo has about 22,000 miles on it, I don't know if this was there from the beginning or not but it sounds like its getting worse. There is a metal rattling/flapping sound coming from the engine bay. The sound is not there off throttle, or when I am off boost completely. But if I am making slight boost, like 1/4 throttle with the revs climbing slowly it is there. It is not RPM dependent, if I stay in a low gear and let off the throttle and keep the RPM's up and ease back into the throttle again, its there. The rattle seems to go away as the boost increases. Tried to record it but my phone is not picking it up. I had the intake off last weekend and took some pictures of the turbo and everything looks clean, don't feel any wiggle in the shaft either. Going to check it again this weekend as well as the exhaust side to see what I find. Anyone have any ideas, getting paranoid with all the is20 turbo failures on the older Rev, which is what I have (rev R). I have also been checking oil temps and they are normal, IAT is normal, and in my logs I am always hitting requested boost. Any input would be great so I could stop being paranoid and enjoy the car again.