T25 Water Seal Blown - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


DIY Turbo Discussion greddy on a 1.8? homebrew kit?

Reply
 
 
 
LinkBack Thread Tools
Old 01-11-2008, 01:27 AM   #1
Elite Member
Thread Starter
iTrader: (6)
 
Join Date: Sep 2007
Location: CA
Posts: 1,990
Total Cats: 9
Default T25 Water Seal Blown

I have a chance to get a pretty cheap T25, but it has a blown water seal.

He told me if it idles for a while, it will smoke gray, not white.

Are there any implications that a water seal may have caused damage to something else?

Is replacing the water seal the only thing that should be needed? Or would an entire rebuild be needed?

Thanks.
kenzo42 is offline   Reply With Quote
Old 01-11-2008, 01:32 AM   #2
Elite Member
iTrader: (13)
 
cjernigan's Avatar
 
Join Date: Oct 2006
Location: Atlanta, GA
Posts: 8,147
Total Cats: 6
Default

Grey means oil not water. Full rebuilds are cheap, might as well do the whole thing while you're in there. gpopshop.com
cjernigan is offline   Reply With Quote
Old 01-11-2008, 01:38 AM   #3
Elite Member
Thread Starter
iTrader: (6)
 
Join Date: Sep 2007
Location: CA
Posts: 1,990
Total Cats: 9
Default

So with a turbo smoking gray, does it have any implications of damage to anything else? Like oil starvation or overheating of the turbo or any irreversible damage that can't be fixed w/ a rebuild kit?
kenzo42 is offline   Reply With Quote
Old 01-11-2008, 01:45 AM   #4
Elite Member
iTrader: (13)
 
cjernigan's Avatar
 
Join Date: Oct 2006
Location: Atlanta, GA
Posts: 8,147
Total Cats: 6
Default

When turbo's smoke it usually just means the oil seals are leaking and it needs a rebuild. You could get away with just replacing the oil seals. Check the shaft play though, that will tell you how bad things are. If the wheels can't touch the housings then there should be no damage. If the wheels contacted the housings then start looking for a different turbo. You can find one that isn't messed up for cheap elsewhere. Though doubtful the shaft could be damaged if starved of oil but the brass journal bearings are supposed to keep that from being a serious issue.
cjernigan is offline   Reply With Quote
Old 01-11-2008, 02:33 AM   #5
Junior Member
 
Join Date: Jan 2008
Posts: 272
Total Cats: 0
Default

Quote:
Originally Posted by cjernigan View Post
When turbo's smoke it usually just means the oil seals are leaking and it needs a rebuild. You could get away with just replacing the oil seals. Check the shaft play though, that will tell you how bad things are. If the wheels can't touch the housings then there should be no damage. If the wheels contacted the housings then start looking for a different turbo. You can find one that isn't messed up for cheap elsewhere. Though doubtful the shaft could be damaged if starved of oil but the brass journal bearings are supposed to keep that from being a serious issue.
are there anways you can fix the shaft play? i just got a gt25 for free but got a little shaftplay..its barely touching the housing...
Sleeper_MX5 is offline   Reply With Quote
Old 01-11-2008, 09:57 AM   #6
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,847
Total Cats: 1,788
Default

its impossible for the water to enter the exhaust unless the entire center section was cracked. in that case you'd have oil and water everywhere and chance are the engine would blow then catch on fire 2 minutes later.
Braineack is offline   Reply With Quote
Old 01-11-2008, 10:22 AM   #7
Elite Member
iTrader: (9)
 
Saml01's Avatar
 
Join Date: Jul 2007
Location: NYC
Posts: 5,730
Total Cats: 2
Default

Quote:
Originally Posted by cjernigan View Post
Grey means oil not water. Full rebuilds are cheap, might as well do the whole thing while you're in there. gpopshop.com
Blue is oil actually(I used to own a ford), unless turbos for some reason smoke gray.
Saml01 is offline   Reply With Quote
Old 01-11-2008, 02:09 PM   #8
Elite Member
iTrader: (13)
 
cjernigan's Avatar
 
Join Date: Oct 2006
Location: Atlanta, GA
Posts: 8,147
Total Cats: 6
Default

WTF sam. Grey can easily be mistaken for blue or vice versa. My turbo smoked grey.
cjernigan is offline   Reply With Quote
Old 01-11-2008, 02:17 PM   #9
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,847
Total Cats: 1,788
Default

i always saw grayish smoke from my pipes when id burn oil in boost. at idle it was always blue however.
Braineack is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 57 07-19-2017 05:11 PM
OTS Bilstein to motorsports ASN conversion stoves Suspension, Brakes, Drivetrain 5 04-21-2016 04:00 PM
Leaky Wilwoods mx592 Suspension, Brakes, Drivetrain 1 10-01-2015 01:45 AM
Bad head gasket or ? shooterschmidty Engine Performance 8 09-30-2015 11:28 PM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 11:55 PM.