Im thinking about getting upgraded pushrods. But I swear I read ther 2003's are forged from the factory and that in 2004 they went to weaker pushrods?????I have a 2003 so if they are forged no reason to change them..Anyone can verify.
2003's come with forged pushrods?
- Thread starter Twister
- Start date
VicTxV10
Enthusiast
...it can be your best tool in the box
its been copied and pasted a bunch of times. dfont know if its true or not......ask tator to confirm.
http://forums.viperclub.org/2454252-post11.html
http://forums.viperclub.org/2513884-post4.html
http://forums.viperclub.org/2782034-post12.html
http://forums.viperclub.org/2855103-post14.html
I Knew i read it
http://forums.viperclub.org/2454252-post11.html
http://forums.viperclub.org/2513884-post4.html
http://forums.viperclub.org/2782034-post12.html
http://forums.viperclub.org/2855103-post14.html
I Knew i read it
twister, so apparently you broke at least one rod ?
depending on your damage, you might just want to replace the 1 or 2 you broke with take offs from another 2003 car. if you did more damage, **** it up and build it right. hope it was not that though...
depending on your damage, you might just want to replace the 1 or 2 you broke with take offs from another 2003 car. if you did more damage, **** it up and build it right. hope it was not that though...
Pushrods or connecting rods (Piston)????
2003 are said to have forged connecting rods not forged pushrods.
Roe Racing sells upgraded pushrods if that's what you are looking for.
no Didnt break em..Just have my rocer cover off and was thinking about those harland sharp roller rockers and how i dont really trust em an saw roe racing sells a strong set for like 160$...Was gonna get them but then thought for sure the 03 has forged pushrods from the factory.
Greg Good Cylinder Heads
Enthusiast
A stiffer pushrod is always better. The stock pushrods on a Viper flex quite a bit, causing camshaft failure.
Here is how it happens; During peak tappet acceleration on the camshaft lobe, the pushrod sees its peak load. That is where the pushrod will bend, if it is going to. After the acceleration rate drops the pushrod will straighten out, adding energy to the rocker and valve, causing it to *loft*, or have more lift than it is designed to. When the valve spring is able to get everything back in contact, the lifter will impact the lobe, causing damage.
The Spintron trace in the second pic displays the effect of a too-weak pushrod. The red line, which shows actual valve motion, lags behind the blue line, which shows theoretical valve motion. You can see where the actual lift lags behind design lift at the beginning of the lift curve, and as the pushrod straightens out the valve lift exceeds the design lift. We call that *lofting*. The problem in this case is that the spring package doesn't let the valve loft completely over the nose of the cam, and slams the lifter down onto the top of the lobe, causing damage.
The pic on the left shows two cams. The one on the left side is a 708 cam from a stock Viper. On the top of one of the lobes you can clearly see where the lifter had been impacting the camshaft lobe. The cam had to be replaced. The Spintron (which is of a different engine) trace shows how it happened.
Here is how it happens; During peak tappet acceleration on the camshaft lobe, the pushrod sees its peak load. That is where the pushrod will bend, if it is going to. After the acceleration rate drops the pushrod will straighten out, adding energy to the rocker and valve, causing it to *loft*, or have more lift than it is designed to. When the valve spring is able to get everything back in contact, the lifter will impact the lobe, causing damage.
The Spintron trace in the second pic displays the effect of a too-weak pushrod. The red line, which shows actual valve motion, lags behind the blue line, which shows theoretical valve motion. You can see where the actual lift lags behind design lift at the beginning of the lift curve, and as the pushrod straightens out the valve lift exceeds the design lift. We call that *lofting*. The problem in this case is that the spring package doesn't let the valve loft completely over the nose of the cam, and slams the lifter down onto the top of the lobe, causing damage.
The pic on the left shows two cams. The one on the left side is a 708 cam from a stock Viper. On the top of one of the lobes you can clearly see where the lifter had been impacting the camshaft lobe. The cam had to be replaced. The Spintron (which is of a different engine) trace shows how it happened.
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Greg Good Cylinder Heads
Enthusiast
Greg Good Cylinder Heads
Enthusiast
Greg, such a nice guy to step in and help Tweester. Hang in there as his thinker runs a cam with far too much lobe separation and little to no spark.
Hey Tucker! Happy New Year!
vancouver-gts
Viper Owner
I've used Magnum one piece pushrods in many jetboats that sees high rpm range on a constant.
Never had a failure.
COMP Cams® - Pushrods
Never had a failure.
COMP Cams® - Pushrods
Greg, such a nice guy to step in and help Tweester. Hang in there as his thinker runs a cam with far too much lobe separation and little to no spark.
Pretty useless after a few have put some actual thought into this. Not apreciated and please stop as I do not find it funny to b insulted. Thank you and Happy New Year
Thanks for the info GG
Greg Good went and got himself a website for the New Year. Huge Congrats to the caveman.
That was just the tequila talking.No thinker required.
lol...YOU GUYS ARE LUCKY. iM SITTING HERE BEHIND A DESK DOING ALL KINDS OF PAPERWORK ON STUFF THAT INVOLVES TEQUILA..LOL
sorry about the caps
And if you can see the caps button is on and subsequently feel the need to apologize for it;
TURN IT OFF!
Greg Good Cylinder Heads
Enthusiast
Greg Good went and got himself a website for the New Year. Huge Congrats to the caveman.
I've had that.
Hey, are there still a lot of deer coming to eat in your driveway? Those pics were cool.
I've had that.
Hey, are there still a lot of deer coming to eat in your driveway? Those pics were cool.
Every damn night.
Greg Good Cylinder Heads
Enthusiast
I don't have any deer in my front yard, but I have about 50 doves that eat like little piggies. Speaking of which, I need to stop at the store and pick up another 50 pound sack of food for them.
Sorry for the thread hijack Twister.
Speaking of which, I need to stop at the store and pick up another 50 pound sack of food for them. Sorry for the thread hijack Twister.
I don't have any deer in my front yard, but I have about 50 doves that eat like little piggies.
Sorry for the thread hijack Twister.
Don't worry about it. Twister likes corn.
RevHeat
Viper Owner
Twister is your car still being look at? What is the story?
Black Moon
Enthusiast
Don't worry about it. Twister likes corn.
Corn hole maybe.
Black Moon
Enthusiast
Bent pushrods and denial of warranty maybe? Just a guess.
