jesel rockers
Thread Starter
Racer
Joined: Jul 2003
Posts: 398
Likes: 0
From: Calera AL
jesel rockers
Anybody install the jesel non-adjustable rockers on the C5? I got em but valve covers don't fit.
I saw a post before that stated that the spacers create other coil pack clearence problems? :confused:
I saw a post before that stated that the spacers create other coil pack clearence problems? :confused:
Le Mans Master
Joined: Jan 2001
Posts: 6,429
Likes: 1
From: God's Replica
Re: jesel rockers (X_03_Cobra_guy)
I have the J2K adjustables and they would not fit. You can get a spacer from ARE or SAM racing. Extreme might even have them. I have not heard about any problems with the SAM spacer. That would be new to me.
I have custom valve covers, so I never needed a spacer.
[Modified by intel55, 12:32 AM 9/18/2003]
I have custom valve covers, so I never needed a spacer.
[Modified by intel55, 12:32 AM 9/18/2003]
Safety Car
Joined: Dec 2001
Posts: 4,295
Likes: 2
From: Indianapolis Indiana
Cruise-In III Veteran
Cruise-In IV Veteran
Re: jesel rockers (intel55)
1) You can get a valve cover spacer, but they're prone to leaks and require longer spark plug wires.
2) Buy the GM Perf Parts C5R covers. Better Option, but more pricey.
:cheers:
2) Buy the GM Perf Parts C5R covers. Better Option, but more pricey.
:cheers:
Safety Car
Joined: Dec 2001
Posts: 4,295
Likes: 2
From: Indianapolis Indiana
Cruise-In III Veteran
Cruise-In IV Veteran
Re: jesel rockers (cfi_luz)
Are these the 700.00 shaft mount rockers? If so, I thought they were adjustable. thanks
Le Mans Master
Joined: Jan 2001
Posts: 6,429
Likes: 1
From: God's Replica
Re: jesel rockers (cfi_luz)
Are these the 700.00 shaft mount rockers? If so, I thought they were adjustable. thanks
Extreme may be able to get you the valve covers I got a couple years ago. They are ALOT better than the Katech ones... alot lot lot better.
[Modified by intel55, 1:10 AM 9/18/2003]
Burning Brakes
Joined: Feb 2002
Posts: 1,154
Likes: 25
From: Jasper GA
Re: jesel rockers (intel55)
The stock valve covers can be modified to clear the non-adjustable Jesels by removing all of the internal oil baffling. To avoid a lot of oil getting into the LS1 PCV system, the LS6 PCV setup (vacuum being pulled from the valley cover rather than one of the valve covers) should be installed in conjunction with this mod.
I've just switched to Katech's new valve covers, so if you're interested in my modified originals, they're yours for a pittance.
I've just switched to Katech's new valve covers, so if you're interested in my modified originals, they're yours for a pittance.
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
Burning Brakes
Joined: Feb 2002
Posts: 1,154
Likes: 25
From: Jasper GA
Re: jesel rockers (X_03_Cobra_guy)
Just buy the LS6 valley cover and associated hoses from your friendly Chevy dealer. The mod takes the valve covers out of the PCV system, making the stock baffling unecessary for control of oil ingestion. Some dental work is required on early blocks to clear the LS6 valley cover baffle, but this shouldn't be a problem for anyone with a degree in Dremel tool.
Someplace, there is an LS1 wbsite that gives you a step by step tutorial for this mod, complete with photos. I just can't remember the address, but I'm sure that another forum member will.
Someplace, there is an LS1 wbsite that gives you a step by step tutorial for this mod, complete with photos. I just can't remember the address, but I'm sure that another forum member will.
Le Mans Master
Joined: Apr 1999
Posts: 7,820
Likes: 0
From: Burlington ON
Cruise-In I, II, III, IV & V Veteran
CI-I & II Auto-X Champ
Re: jesel rockers (Operations)
What kind of HP are these worth? 8-10?
They aren't worth it unless you are running a pretty high lift cam IMO. The stock ones last quite awhile even with agressive cams!
Burning Brakes
Joined: Feb 2002
Posts: 1,154
Likes: 25
From: Jasper GA
Re: jesel rockers (C5-VERT)
If the YTs are shaft mounted, probably not. The shaft mount provides extra stability for high lift cams, especially under conditions of sustained high revs, as in road racing.
Le Mans Master
Joined: Jan 2001
Posts: 6,429
Likes: 1
From: God's Replica
Re: jesel rockers (C5-VERT)
I think the Jessels are of higer quality. But that is just my opinion. IF you get the J2K (adjustable) and have bigger valves you will need a custom shaft mount from them. It needs to be a tiny bit taller.
Thread Starter
Racer
Joined: Jul 2003
Posts: 398
Likes: 0
From: Calera AL
Re: jesel rockers (intel55)
I got the jesels for reliability with heavy springs and a bigger cam. I really want to keep it all under
the stock covers if possible. The cam is a .580 lift and removing the baffles may work. I think I'll bolt the covers on the heads with the rockers and valves installed with no springs and measure how much
lift there is available without the baffles. Hopefully there will be enough. Then I will do the Z06 PCV trick mentioned above. Hopefully I can find it using the search feature.
the stock covers if possible. The cam is a .580 lift and removing the baffles may work. I think I'll bolt the covers on the heads with the rockers and valves installed with no springs and measure how much
lift there is available without the baffles. Hopefully there will be enough. Then I will do the Z06 PCV trick mentioned above. Hopefully I can find it using the search feature.
Le Mans Master
Joined: Jan 2001
Posts: 6,429
Likes: 1
From: God's Replica
Re: jesel rockers (X_03_Cobra_guy)
Oh I almost forgot on my Jessel J2K's I also had to slighlty clearance the head on the exhaust side railing. I have LQ9 heads which really should not matter, but still needed to be clearanced for the adj. rockers. :cheers:
Thread Starter
Racer
Joined: Jul 2003
Posts: 398
Likes: 0
From: Calera AL
Re: jesel rockers (marco383)
Thanks marco383. I found the tutorial at:
http://www.ls1howto.com/index.php?article=18
Cool! I got the GM parts ordered from Scoggin-Dickey 60 odd bucks worth.
The Z06 PCV system is the way to go then remove all the baffles and grind off
a few bumps and I think it'll be good to go. :smash:
http://www.ls1howto.com/index.php?article=18
Cool! I got the GM parts ordered from Scoggin-Dickey 60 odd bucks worth.
The Z06 PCV system is the way to go then remove all the baffles and grind off
a few bumps and I think it'll be good to go. :smash:
Former Vendor
Joined: May 2003
Posts: 2,173
Likes: 2
From: Dallas Texas
Re: jesel rockers (X_03_Cobra_guy)
If you do not want to deal with new valve covers and coil relocation kits, We now offer a spacer that will work with the Corvettes.
The Spacers currently on the market will not clear the altenator as they were designed for an Fbody.
Give us a call, PM me, or talk to Lou if you are interested in them :steering:
Louis
http://www.LGMotorsports.com
[Modified by Louis @ LGM, 3:12 PM 9/19/2003]
The Spacers currently on the market will not clear the altenator as they were designed for an Fbody.
Give us a call, PM me, or talk to Lou if you are interested in them :steering:
Louis
http://www.LGMotorsports.com
[Modified by Louis @ LGM, 3:12 PM 9/19/2003]
