'90 EGR Lines
Thread Starter
Racer
Joined: Dec 2004
Posts: 470
Likes: 0
From: Phoenix Arizona
'90 EGR Lines
My '90 has very tired EGR (vacuum lines) does anyone know where I can purchase G.M. part # 10055893. I have searched GM, GM performance, Ecklers, Mid-America, Corvette Central and the list goes on. G.M. states they were discontinued, looking for a knock-off or substuite.
Thanks for the help......................
Thanks for the help......................
Le Mans Master
Joined: Dec 2000
Posts: 7,839
Likes: 22
From: San Diego, Ca
Don't know of any resource for the OEM. Hard plastic line is available at most Discounters. You might just check with a couple of Dealers to see if any warehouse old parts. We have one in San Diego - Hine Pontiac - and sometimes, they can find discontinued stuff.
EGR is used to cool combustion temps at cruise when the ECM is delivering a 14.7 to 1 mix. That reduces NOX (a controlled emission), but more importantly detonation. Later, more sophiticated systems meter the flow through a series of valves, and more modern powertrains accomplish the same result through valve timing. Older stuff - such as the Brits in the Big One - simply injected water into their Spitfires accomplishing the same objective. If you don't know what it does, enroll in an Adult Ed class on electronic fuel injection, take a high school shop class or sit down with a cup of coffee at Border's and read Ben Watson's Chevy Fuel Injection. If you're spewing NOX, you're also burning valves and damaging pistons (as well as mucking up the environment). Can't say I'd get too excited about that sort of ride - but each to their own.
EGR is used to cool combustion temps at cruise when the ECM is delivering a 14.7 to 1 mix. That reduces NOX (a controlled emission), but more importantly detonation. Later, more sophiticated systems meter the flow through a series of valves, and more modern powertrains accomplish the same result through valve timing. Older stuff - such as the Brits in the Big One - simply injected water into their Spitfires accomplishing the same objective. If you don't know what it does, enroll in an Adult Ed class on electronic fuel injection, take a high school shop class or sit down with a cup of coffee at Border's and read Ben Watson's Chevy Fuel Injection. If you're spewing NOX, you're also burning valves and damaging pistons (as well as mucking up the environment). Can't say I'd get too excited about that sort of ride - but each to their own.
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