Which roller rocker for 215 TFS heads??? Are there any that dont break!!
12-15-2009, 12:20 PM
#1
Which roller rocker for 215 TFS heads??? Are there any that dont break!! What roller rockers are the best for the 215 TFS heads, I have seen threads on both Harland Sharps & ultralite non adjustable yella terra breaking…So is there another option out there? Or are most of these failures due to improper install. And on that note what is the proper procedure to install roller rockers on a head with a different valve degree…
Are the jesel’s worth the money?
Are the jesel’s worth the money?
12-15-2009, 12:32 PM
#2
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What roller rockers are the best for the 215 TFS heads, I have seen threads on both Harland Sharps & ultralite non adjustable yella terra breaking…So is there another option out there? Or are most of these failures due to improper install. And on that note what is the proper procedure to install roller rockers on a head with a different valve degree…
Are the jesel’s worth the money?
Are the jesel’s worth the money?
12-15-2009, 12:39 PM
#3
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Any part at any given time, stock, or aftermarket can fail. It does have a lot to do with what you said though. Incorrect setup will definately increase the chances of failure, and proper setup will decrease the chance of failure.
YT or HS, its a toss up. Both have had failures. I myself suffered a YT failure (went through Ron@Vengeance and the manufacturer took care of it for me) and I am positive that it happened at startup the following day after parking her in the garage following about 100 miles of easy cruising. I say this because when I parked the car it sounded perfect, and the next day it sounded strange upon initial startup. I was really worried when the different engine sound didn't improve after the engine had warmed up.
What kind of temperature ranges do you see? I ask because I am speculating the cold weather I had may have had some influence on the rocker failing. Always let your motor warm up too before you start revving the motor.
I have heard Jesels are unbreakable, but is anything really unbreakable. They also don't clear your valve covers. Custom / Aftermarket Valve covers are required to run them I believe. Good luck.
YT or HS, its a toss up. Both have had failures. I myself suffered a YT failure (went through Ron@Vengeance and the manufacturer took care of it for me) and I am positive that it happened at startup the following day after parking her in the garage following about 100 miles of easy cruising. I say this because when I parked the car it sounded perfect, and the next day it sounded strange upon initial startup. I was really worried when the different engine sound didn't improve after the engine had warmed up.
What kind of temperature ranges do you see? I ask because I am speculating the cold weather I had may have had some influence on the rocker failing. Always let your motor warm up too before you start revving the motor.
I have heard Jesels are unbreakable, but is anything really unbreakable. They also don't clear your valve covers. Custom / Aftermarket Valve covers are required to run them I believe. Good luck.
12-15-2009, 12:44 PM
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You name the brand, you'll find somebody that's seen one break. It's the nature of the business. Personally I've seen Jesel's break (440cui LSx Motor with ETP Canted Valve Heads), I've seen stock rockers break (numerous applications), I've seen Harland's break (only twice, needle bearing failures, although I see a lot of them come through with no problems), I've seen Yella Terra's break (once, I don't see many come through though), I've seen Crane's break. The Crane installation procedure is very time intensive, read their instructions before purchasing. Take your pick.
As far as clearence, Trick Flow sells a valve cover spacer that works with the stock vavle covers.
As far as clearence, Trick Flow sells a valve cover spacer that works with the stock vavle covers.
12-15-2009, 03:17 PM
#5
You name the brand, you'll find somebody that's seen one break. It's the nature of the business. Personally I've seen Jesel's break (440cui LSx Motor with ETP Canted Valve Heads), I've seen stock rockers break (numerous applications), I've seen Harland's break (only twice, needle bearing failures, although I see a lot of them come through with no problems), I've seen Yella Terra's break (once, I don't see many come through though), I've seen Crane's break. The Crane installation procedure is very time intensive, read their instructions before purchasing. Take your pick.
As far as clearence, Trick Flow sells a valve cover spacer that works with the stock vavle covers.
As far as clearence, Trick Flow sells a valve cover spacer that works with the stock vavle covers.
12-16-2009, 11:56 AM
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I have the TEA Stage II LS6 heads, milled to 59cc, 11.8:1 CR, -4cc relieved coated pistons, stock rockers, my own cam profile, FAST 92mm, 42lb/hr injectors, electric water pump, C5ZO6 MAF, FTP Lid, H-beam rods, underdrive pulley, Racetronix fuel pump, Kooks 1 7/8" off road to Corsa, RPM T56, LS7 Clutch. Did 465rwhp at 7200rpm and 405rwtq at 6100rpm with 92kpa at 6700rpm. Injector duty cycle is 78% with AFR at 13:1, timing on the dyno was 31 degress, I retarded it 2 degrees for the summer, and lost 5rwhp and 5rwtq.
PM me if you have any more questions.
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12-16-2009, 12:29 PM
#9
i have a set of YT coming with the heads but one is broken...dunno what path i want to choose for my motor...
12-16-2009, 02:25 PM
#17
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Stock... Just like Damian said. I can get you everything you need including pushrods for less than the cost of roller rockers. I've never had a stock rocker fail (other than needle bearings, but the trunion upgrade in my kit takes care of that...)
Thanks,
Shane
Thanks,
Shane
12-16-2009, 06:59 PM
#19
thanks for the pm i am looking to go this route...just curious on reason for the larger pushrod diameter, just added strength and reduce flexing...it will fit the head holes without machining correct?
