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Tech Area => General Buick Tech => Topic started by: tb3 on January 05 2012, 10:45:01 AM

Title: contamination trap on the gnx turbo
Post by: tb3 on January 05 2012, 10:45:01 AM
was it really effective? 
how come it didn't catch on?
Title: Re: contamination trap on the gnx turbo
Post by: tb3 on January 09 2012, 12:09:03 AM
Cause I was wondering
Title: Re: contamination trap on the gnx turbo
Post by: Steve Wood on January 09 2012, 09:57:48 AM
they were probably hoping it would prevent a turbo warranty claim due to shattered ceramic blades.  I guess PTE trumped them with the turbosaver
Title: Re: contamination trap on the gnx turbo
Post by: tb3 on January 09 2012, 11:40:49 AM
I wonder if that's the only difference in the exhaust housing?
Title: Re: contamination trap on the gnx turbo
Post by: Charlief1 on January 09 2012, 12:54:22 PM
No difference in the exhaust side. Just the ceramic compressor wheel from what I read.
Title: Re: contamination trap on the gnx turbo
Post by: tb3 on January 10 2012, 11:47:56 PM
No difference in the exhaust side. Just the ceramic compressor wheel from what I read.

according to this site, it says the "bump" was cast into the exhaust side

http://home.comcast.net/~buickgnx/GNX/engine.htm (http://home.comcast.net/~buickgnx/GNX/engine.htm)

says they where afraid of the wire feed header welds???
odd
Title: Re: contamination trap on the gnx turbo
Post by: Charlief1 on January 11 2012, 12:08:40 AM
I thought you were talking about the oil, not the exhaust.
Title: Re: contamination trap on the gnx turbo
Post by: Steve Wood on January 11 2012, 10:42:14 AM
that's probably my fault because I said Turbosaver.

The ceramic impeller was very light and very fragile/brittle.  The mig wire problem might have been the primary fear.  We know that even the steel blades have been nicked by something that went thru them.  Many cases it was a piece of head gasket, ground electrode from a plug, etc., but there may have been a legit fear of a piece of wire as the welding was pretty crude on the factory headers on the inside.  Or maybe weld slag?

We used to weld them on the outside and then port them a bit to smooth them out and take rough areas out of the airstream
Title: Re: contamination trap on the gnx turbo
Post by: tb3 on February 07 2012, 11:16:01 PM
interesting.  :chin:
 
I wonder how cost effective to do the turbo trap vs just removing the headers from a brand new gn to do a quick clean up of the mig welds inside the 2 headers? 
Title: Re: contamination trap on the gnx turbo
Post by: Steve Wood on February 08 2012, 09:41:46 AM
probably a bright idea...of course brand new gn owners never knew if a little slag had scratched the turbine, or not.
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