C4 LT1/4 with Headers and AC vibration
Thread Starter
Le Mans Master
Joined: Feb 1999
Posts: 9,988
Likes: 43
From: South Carolina
St. Jude Donor '03 & '05
C4 LT1/4 with Headers and AC vibration
My 93 has headers, and the AC vibration, when on, under hard acceleration. Most notably second gear pulls.
I have the 3 bracket rods that the factory put on the ac to the exhaust and on top where it attaches alternator to manifold.
Still vibrates. Harmonic Balancer new, pulley and tensioner new.
Question is why does it vibrate in the first place? Low or high on freon? Or just poor design of attachment?
I have the 3 bracket rods that the factory put on the ac to the exhaust and on top where it attaches alternator to manifold.
Still vibrates. Harmonic Balancer new, pulley and tensioner new.
Question is why does it vibrate in the first place? Low or high on freon? Or just poor design of attachment?
Melting Slicks
Joined: Jun 2014
Posts: 2,282
Likes: 506
From: NJ
Assuming the A/C Comp. is not suspect, look to the headers, it's the only variable. The C.I. manifolds are thick and beefy as opposed to a 0.375" plate used on the header. Need a pic of Comp. mount if possible.
Thread Starter
Le Mans Master
Joined: Feb 1999
Posts: 9,988
Likes: 43
From: South Carolina
St. Jude Donor '03 & '05
Thread Starter
Le Mans Master
Joined: Feb 1999
Posts: 9,988
Likes: 43
From: South Carolina
St. Jude Donor '03 & '05
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Corvette & Porsche 911: How Two Icons Conquered the Last 25 Years
Joe Kucinski
2027 Chevrolet Silverado 1500 First Look: Everything You NEED to Know!
Michael S. Palmer
5 Best & 5 Worst Corvette Daily Drivers
Joe Kucinski
The Headlights of Every Corvette Generation Explained
Joe Kucinski
5 Best & 5 Most Overrated Corvette Track Packages of All Time!
Joe Kucinski
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
Drifting
Joined: Jan 2005
Posts: 1,355
Likes: 327
From: San Antonio Tx
Drifting
Joined: Jan 2005
Posts: 1,355
Likes: 327
From: San Antonio Tx
Thread Starter
Le Mans Master
Joined: Feb 1999
Posts: 9,988
Likes: 43
From: South Carolina
St. Jude Donor '03 & '05
Not aure of percentage throttle whem AC is cut off, but its probably very close to 100%
Safety Car
Joined: Dec 2009
Posts: 4,374
Likes: 430
From: Birmingham Al
MY 93 has a 307-rear gear, didn't shake till I replaced everything compressor 134A coolant ETC., not really a big deal it's not a bad thing just saying my does the same, I have checked and rechecked everything the install looks, well it won't go on but one way?? Been on for two years blows ICE cold I would fix but what would I fix ???
