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Old 06-03-2019, 08:20 PM   #8
Supercup
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Drives: Former Owner 15 Z/28 #934
Join Date: Sep 2016
Location: S. Cal
Posts: 897
Quote:
Originally Posted by Biergut View Post
Because Chevrolet must have had a reason. Which is good enough for me. I do as they direct and remove when on track. But then again I must be a goober as I change the oil and diff fluid after track as well per their direction.
There are several pieces - Chevrolet recommends the rain tray be removed for the track. The second piece seals up the airbox, keeping hot engine air from coming in, so you want to leave that piece in place.

Only purpose rain guide serves is to retain heat and direct water away from the top of the motor. So unless you are driving it in very cold weather or in the rain, there is no reason to leave that in the car.

I am also in S. Cal - so mine came out when I got the car home and has not been in since. When I wash the car I put a shammy and towel over that area to catch the water.

I would take it out and save it for a rainy day!

See attached track prep under engine coolant - note about remove for improved air flow.

See attached "special bulliten" under air intake system - for note about hood sealing up air filter box (need plastic piece under hood and seal on it to make good seal.
Attached Images
File Type: pdf Z28_TrackPREP_Final.pdf (134.6 KB, 65 views)
File Type: pdf Z_28 SPECIAL BULLETIN.pdf (121.7 KB, 57 views)
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