Intake horn corrosion - ZR-1 Net Registry Forums

secondchance · 10-21-2008

I always thought the LT5 under the hood was the prettiest part of a ZR-1. Being a daily driver, after 14 years, motor is beginning to look a bit messy. So, I am thinking about refinishing valve cover and intake plenum/horn - either Ligenfelter paint or powder coating.
I would love to solve corrosion issue (adjacent to cover plate on top of throttle body) before refinishing.
It seems different metal and presence of current is causing this. One thought I had was figuring out a way to insulate 3 electrical pieces connected to throttle body/air horn:
1. IAT sensor - simply relocate to plastic air intake above air filter housing.
2. Throttle position sensor - I got to disassemble and figure out.
3. IAC motor - Insulate bolt from bracket.

Has anyone figured out how to stop this corrosion?

Another thought is to purchase "Counter Act" electronic corrosion control unit and apply the patch to underside of throttle body. However, heat may make this impractical.

Any thought or info would be appreciated.

10-21-2008	#1
secondchance Join Date: Aug 2006 Location: McLean, VA Posts: 3,723	Intake horn corrosion I always thought the LT5 under the hood was the prettiest part of a ZR-1. Being a daily driver, after 14 years, motor is beginning to look a bit messy. So, I am thinking about refinishing valve cover and intake plenum/horn - either Ligenfelter paint or powder coating. I would love to solve corrosion issue (adjacent to cover plate on top of throttle body) before refinishing. It seems different metal and presence of current is causing this. One thought I had was figuring out a way to insulate 3 electrical pieces connected to throttle body/air horn: 1. IAT sensor - simply relocate to plastic air intake above air filter housing. 2. Throttle position sensor - I got to disassemble and figure out. 3. IAC motor - Insulate bolt from bracket. Has anyone figured out how to stop this corrosion? Another thought is to purchase "Counter Act" electronic corrosion control unit and apply the patch to underside of throttle body. However, heat may make this impractical. Any thought or info would be appreciated.