Hydra-rev kits -- anyone using one?
Thread Starter
Le Mans Master
Joined: May 2000
Posts: 8,729
Likes: 1,508
From: Redmond WA
Hydra-rev kits -- anyone using one?
AFR (the head manufacturer) makes a HydraRev kit that places extra downforce on the hydraulic lifter body (since high spring pressures would just collapse the hydraulic lifter).
http://www.airflowresearch.com/pages/hydra_rev.htm
This all sounds like a great idea on paper if you want to try to rev to 6500+ but does anyone have experience with one? Looking for dis/recommenations!
Thanks,
Dave
http://www.airflowresearch.com/pages/hydra_rev.htm
This all sounds like a great idea on paper if you want to try to rev to 6500+ but does anyone have experience with one? Looking for dis/recommenations!
Thanks,
Dave
Drifting
Joined: Jul 2001
Posts: 1,897
Likes: 0
From: La Fontaine Indiana
Re: Hydra-rev kits -- anyone using one? (DAVE396LT1)
You should do a search this has come up several times in the past 6 months. However some who posted about them had no idea how they worked that was obvious from their post. I have had them in my current engine for the past four years. When I build another engine they will be in it also. :yesnod:
Instructor
Joined: Dec 2000
Posts: 228
Likes: 0
From: SoCal
Re: Hydra-rev kits -- anyone using one? (LT4POWR)
I use one on my car. My stock bottom end LT1 pulls to 7,200 RPM, the PCM cut off, with no issues.
The main advantage I have found with the hydra rev kit is keeping power after your power peak. My car makes peak power at 6,600 RPM, but at 7,200 RPM I am only down 5 RWHP. Without the hydra rev I am sure I would be down at least 15-20 RWHP at 7,200 RPM. Very trick piece, no need to worry about valve float with one.
[Modified by 4DRSS, 9:32 AM 7/29/2003]
The main advantage I have found with the hydra rev kit is keeping power after your power peak. My car makes peak power at 6,600 RPM, but at 7,200 RPM I am only down 5 RWHP. Without the hydra rev I am sure I would be down at least 15-20 RWHP at 7,200 RPM. Very trick piece, no need to worry about valve float with one.
[Modified by 4DRSS, 9:32 AM 7/29/2003]
Thread Starter
Le Mans Master
Joined: May 2000
Posts: 8,729
Likes: 1,508
From: Redmond WA
Re: Hydra-rev kits -- anyone using one? (LT4POWR)
I'm using AFR's #8015 springs which are 145lbs seat, 355 open. I don't think you can run much more spring pressure than that without collapsing the hydraulic lifters.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
Re: Hydra-rev kits -- anyone using one? (Ramrod92)
Andrew, have you noticed any drawbacks? (loss in lower rpm range) :steering:
Le Mans Master
Joined: Jul 2000
Posts: 5,012
Likes: 5
From: OKC OK
Re: Hydra-rev kits -- anyone using one? (4DRSS)
No there are no drawbacks to using this kit, well expect maybe a little more noise from the valvetrain.
If someone what to see/post pics, I have some before/during/after the install.
Racer
Joined: Sep 1999
Posts: 341
Likes: 0
From: Mt. Prospect Illinois
Re: Hydra-rev kits -- anyone using one? (LT4POWR)
LT4POWER
PITA is mild. I have been trying to install for the last 2 nites.
Did you buy the AFR install tool?
Any install tips from anybody would be appreciate!
[Modified by vettmanlt4, 5:56 AM 7/30/2003]
PITA is mild. I have been trying to install for the last 2 nites.
Did you buy the AFR install tool?
Any install tips from anybody would be appreciate!
[Modified by vettmanlt4, 5:56 AM 7/30/2003]
Le Mans Master
Joined: Jul 2000
Posts: 5,012
Likes: 5
From: OKC OK
Re: Hydra-rev kits -- anyone using one? (DAVE396LT1)
I'm using AFR's #8015 springs which are 145lbs seat, 355 open. I don't think you can run much more spring pressure than that without collapsing the hydraulic lifters.
Le Mans Master
Joined: Jul 2000
Posts: 5,012
Likes: 5
From: OKC OK
Re: Hydra-rev kits -- anyone using one? (vettmanlt4)
LT4POWER
PITA is mild. I have been trying to install for the last 2 nites.
Did you buy the AFR install tool?
Any install tips from anybody would be appreciate!
PITA is mild. I have been trying to install for the last 2 nites.
Did you buy the AFR install tool?
Any install tips from anybody would be appreciate!
