vale2489 Posted April 4, 2013 Share Posted April 4, 2013 Slowly getting my l28et 280z going...ive turboed an n/a 280z and have had several sr'd 240's and with an open down pipe the turbos are very audible, with my current z i hear nothing ( took off the turbo inlet to check the turbine, spins freely and minimal shaft play, no oil in inlet tube and appears to be in really good shape) just curious because my last turbo 280z was very loud ( a good loud) Quote Link to comment Share on other sites More sharing options...
cgsheen Posted April 4, 2013 Share Posted April 4, 2013 My Son's L28ET has a stock turbo that's very audible. You can hear that thing spin up (and down, and back up again)... I expected mine to be much the same, but it's not. You can feel when it starts to spool up, but you can't really hear any "turbine noise" from mine. I've always wondered if it's the difference in our exhausts or something. Quote Link to comment Share on other sites More sharing options...
wfritts911 Posted April 4, 2013 Share Posted April 4, 2013 Need. More. Boost. But seriously, I can't any useful info to this thread, just wanted to throw that out there. -Will Quote Link to comment Share on other sites More sharing options...
skirkland1980 Posted April 4, 2013 Share Posted April 4, 2013 I wouldn't worry if the boost is reaching the desired pressure. My stock turbo was loud. It made boost just fine. I removed it and it had a lot of play in the shaft. I replaced it with a new, bigger turbo which is more quiet. Based on this I'm thinking a louder turbo may be a bad thing. If the turbo is too small it will need to spin faster to make boost. If it's worn it will need to spin even faster (more noise). Quote Link to comment Share on other sites More sharing options...
vale2489 Posted April 4, 2013 Author Share Posted April 4, 2013 Ok, that makes me feel better... I guess im not used to turbos being in good shape, lol Quote Link to comment Share on other sites More sharing options...
col10see Posted April 13, 2013 Share Posted April 13, 2013 (edited) My t3t4 turbo doesn't make much noise at idle or even reving but once you put enought load on it you hear it......even with just the down pipe I couldnt really hear it spooling till I took it out and drove it.... also intake could be a factor on the noise levels too Edited April 13, 2013 by col10see Quote Link to comment Share on other sites More sharing options...
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