Roller rockers
Thread Starter
Racer
Joined: Jul 2019
Posts: 494
Likes: 34
From: Nashville TN
Roller rockers
What do people with 88-91 vettes do about roller rockers and tall valve covers? I pulled the ac on mine because of clearance issues with the ac compressor. I suppose I could cut and weld the valve cover (well pay someone to do it), but alternative solution, could one run 85-87 ac setup since it's mounted in front of the head as opposed to on the side? Anyone out there done this?
Le Mans Master
Joined: Sep 2004
Posts: 6,018
Likes: 565
From: Conroe Texas
what i did on my 89 was to relieve (grind) the a/c compressor bracket to allow the valve cover to come up and away from the a/c. if you look at the valve cover from the top and pull up on it, you can see where the bracket needs to be ground. use a marker to make a profile of what material needs to be removed then it becomes grind and fit, grind and fit.
Le Mans Master
Joined: Sep 2004
Posts: 6,018
Likes: 565
From: Conroe Texas
i was running roller rockers and a girdle. wasn't going to fit under stock covers and had to go to a tall cover which is what i did for the clearance and r&r of the covers.
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Drifting
Joined: Jan 2005
Posts: 1,350
Likes: 322
From: San Antonio Tx
I would never go back to the early r4 compressor, the Denso is much smother and quieter. For tall valve covers I had to grind just a little on the bracket where it was hitting the corner of the valve cover and used 3/8" spacers to move the compressor out away from the cover. I did use longer bolts, I didn't have the original bolts so I don't know if they would have worked.
Team Owner
Joined: Jul 2004
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From: Hartford WI
Team Owner
Joined: Dec 2000
Posts: 90,675
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From: SE NY
Cruise-In II Veteran
I ran roller rockers under 'Vette valve covers by simply breaking the oil drip tabs off the insides of the valve covers.
Instructor
Joined: Nov 2015
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From: Central Florida
Le Mans Master
Joined: Sep 2004
Posts: 6,018
Likes: 565
From: Conroe Texas