Turbo Destroyed - What Do You Think Caused This Level of Damage?
#26
Full Member
Thread Starter
Last edited by Mindphrame; 05-13-23 at 04:14 PM.
#27
Rotary Freak
Unless a recent phenomenon - and short of driving Miss Daisy - the bridge in the manifold would be fairly effed I'd expect with an excessive EGT over 25k miles.
Did find similar wheel damage on supposedly chinese sourced garrett copies several years ago, but put that down to a known FOD incident. Must have been a nice woof, woof at idle with that exhaust leak! We usually blow them (and resurface the flange) every few events....never had a gasket go through the hot section.
Did find similar wheel damage on supposedly chinese sourced garrett copies several years ago, but put that down to a known FOD incident. Must have been a nice woof, woof at idle with that exhaust leak! We usually blow them (and resurface the flange) every few events....never had a gasket go through the hot section.
#28
Racecar - Formula 2000
#29
Full Member
Thread Starter
Unless a recent phenomenon - and short of driving Miss Daisy - the bridge in the manifold would be fairly effed I'd expect with an excessive EGT over 25k miles.
Did find similar wheel damage on supposedly chinese sourced garrett copies several years ago, but put that down to a known FOD incident. Must have been a nice woof, woof at idle with that exhaust leak! We usually blow them (and resurface the flange) every few events....never had a gasket go through the hot section.
Did find similar wheel damage on supposedly chinese sourced garrett copies several years ago, but put that down to a known FOD incident. Must have been a nice woof, woof at idle with that exhaust leak! We usually blow them (and resurface the flange) every few events....never had a gasket go through the hot section.
The overall answer might be that yes the EGTs were too high.. for a knockoff hot side wheel.
Also, wasn't this around the time Garrett was offering the massively discounted CHRA exchange program? Without going all tinfoil hat, I wonder if the two events were related. Perhaps the issue was a bit bigger overall or the knockoffs weren't just knockoffs but an issue in sourcing/manufacturing.
I'm ashamed to admit it, but I never noticed the exhaust leak! Sounded fine at idle. I think it was tight enough to only be notable under load but I attributed the sound to an atmosphere-dumped wastegate which always sounded like chaos.
#30
Rotary Freak
Originally Posted by Mindphrame
Hell, the manifold was the "weakest link" pointed out when it was new. Wouldn't EGTs high enough to do this to the wheel eat through the mediocre manifold first or as well? Genuinely curious about that.
Originally Posted by Mindphrame
I'm ashamed to admit it, but I never noticed the exhaust leak! Sounded fine at idle. I think it was tight enough to only be notable under load but I attributed the sound to an atmosphere-dumped wastegate which always sounded like chaos.
#31
Moderator
iTrader: (3)
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,841
Received 2,605 Likes
on
1,848 Posts
Thread
Thread Starter
Forum
Replies
Last Post