roller rockers
05-01-2006, 09:10 PM
#41
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Originally Posted by stone150
i don't think a roller tip does anything but i think the roller rest of it would, compared to just rocking
If QuietTahoe statement is true, then there isn't really any decreased parastatic drag on the valvetrain. The benefit of aftermarket roller rockers would be added strength.
Then what was the reason for using a roller tipped rocker??? Anyone??
The Jesel units look stronger than most roller rockers out on the market.
Though the cost of them tells why.
Jim
Jim
05-01-2006, 09:57 PM
#42
I don't want to get in the middle of the war here, but I figured I'd just show you what I've got and what I've learned from them. Here's a shot of my Harland Sharp 1.7's for ya...I went with em "just because". (had some coin at the time and wanted to try em out...plus, I thought that one or two of my stockers were a little worn at the fulcrum...they weren't). Did I feel any performance gains? Nah. Maybe I gained some piece of mind because they're supposed to be good product that can take abuse from what I've read, or maybe I blew $360. So far they haven't given me any problems that I can tell and the installation was straight forward. From what I've read here though, the stock rockers can take quite a bit of abuse (I believe there were some problems with the 98-99's falling apart at the fulcrum and puking needle bearings, but I think that's been remedied), and with the right length push rod, they're just bolt, torque, and go.
I did have to grind little notches in the head on the push-rod side of the rockers to provide some extra clearance...they looked really close and I wasn't taking any chances...no biggie.
The folks who have the Crane/Vinci rockers and have them set up properly seem to be very happy with them, especially when they're paired with a Crane/Vinci cam.
I did have to grind little notches in the head on the push-rod side of the rockers to provide some extra clearance...they looked really close and I wasn't taking any chances...no biggie.
The folks who have the Crane/Vinci rockers and have them set up properly seem to be very happy with them, especially when they're paired with a Crane/Vinci cam.
05-01-2006, 10:28 PM
#43
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Originally Posted by budhayes3
I don't want to get in the middle of the war here, but I figured I'd just show you what I've got and what I've learned from them. Here's a shot of my Harland Sharp 1.7's for ya...I went with em "just because". (had some coin at the time and wanted to try em out...plus, I thought that one or two of my stockers were a little worn at the fulcrum...they weren't). Did I feel any performance gains? Nah. Maybe I gained some piece of mind because they're supposed to be good product that can take abuse from what I've read, or maybe I blew $360. So far they haven't given me any problems that I can tell and the installation was straight forward. From what I've read here though, the stock rockers can take quite a bit of abuse (I believe there were some problems with the 98-99's falling apart at the fulcrum and puking needle bearings, but I think that's been remedied), and with the right length push rod, they're just bolt, torque, and go.
I did have to grind little notches in the head on the push-rod side of the rockers to provide some extra clearance...they looked really close and I wasn't taking any chances...no biggie.
The folks who have the Crane/Vinci rockers and have them set up properly seem to be very happy with them, especially when they're paired with a Crane/Vinci cam.
I did have to grind little notches in the head on the push-rod side of the rockers to provide some extra clearance...they looked really close and I wasn't taking any chances...no biggie.
The folks who have the Crane/Vinci rockers and have them set up properly seem to be very happy with them, especially when they're paired with a Crane/Vinci cam.
So you have to clearance the heads for the aftermarket roller rockers??
Jim
05-01-2006, 10:46 PM
#45
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Originally Posted by 99Silver6.0
I didnt.
Maybe a sponsor here or a local shop around Houston can sell them cheaper.
Anyone know if they can be had for cheaper than $750.00??
Jim
05-02-2006, 06:12 AM
#46
Originally Posted by CHEVY6000VHO
My brother 2001 GMC Z71 dropped some roller rocker needles. It came out with the drain plug magnet. About three of them.
So you have to clearance the heads for the aftermarket roller rockers??
Jim
So you have to clearance the heads for the aftermarket roller rockers??
Jim
05-03-2006, 02:08 PM
#48
Originally Posted by stone150
is there really any advantage of 1.7 vs 1.8 on stock cam? i saw those harland ones in summit, i like the price
05-04-2006, 11:40 PM
#49
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thunder, you're using the Vinci 1.8 rockers right?? I'm wondering if anyone has tried the Harland Sharp 1.8, because they would be perfect to get a little more lift out of my low lift (.510) cam. I've contacted Lunati about this and they are discouraging me due to the increased possibility of valve float. From what I understand valve float is primarily created by the pushrod flexing under load and springing energy back out. It would seem a quality set of hardened pushrods would solve this problem but Lunati also said they didn't recommend using 1.8 ratio rockers with hydraulic lifters. Does anyone know how much these OEM lifters can handle? The load on the lifter would only be increased by less than 6% according to my calculations so I'm wondering how much of a problem it could be.
05-06-2006, 05:26 PM
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Originally Posted by budhayes3
I don't want to get in the middle of the war here, but I figured I'd just show you what I've got and what I've learned from them. Here's a shot of my Harland Sharp 1.7's for ya...I went with em "just because". (had some coin at the time and wanted to try em out...plus, I thought that one or two of my stockers were a little worn at the fulcrum...they weren't). Did I feel any performance gains? Nah. Maybe I gained some piece of mind because they're supposed to be good product that can take abuse from what I've read, or maybe I blew $360. So far they haven't given me any problems that I can tell and the installation was straight forward. From what I've read here though, the stock rockers can take quite a bit of abuse (I believe there were some problems with the 98-99's falling apart at the fulcrum and puking needle bearings, but I think that's been remedied), and with the right length push rod, they're just bolt, torque, and go.
I did have to grind little notches in the head on the push-rod side of the rockers to provide some extra clearance...they looked really close and I wasn't taking any chances...no biggie.
The folks who have the Crane/Vinci rockers and have them set up properly seem to be very happy with them, especially when they're paired with a Crane/Vinci cam.
I did have to grind little notches in the head on the push-rod side of the rockers to provide some extra clearance...they looked really close and I wasn't taking any chances...no biggie.
The folks who have the Crane/Vinci rockers and have them set up properly seem to be very happy with them, especially when they're paired with a Crane/Vinci cam.
Thanks,
James