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roller rockers for cvh

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Old 19-03-2009, 07:20 PM
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Canada1
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Default roller rockers for cvh

Finally some available?




Rollers on both ends.
Old 19-03-2009, 07:26 PM
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gus
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who? where? how much?
Old 19-03-2009, 07:28 PM
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there spot on
Old 19-03-2009, 07:29 PM
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they look nice shame you wont see them one cover is on
Old 19-03-2009, 07:32 PM
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newman cams should make these would stop most of the cam wear problems on the CVH
Old 19-03-2009, 07:34 PM
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look rather tasty
Old 19-03-2009, 07:35 PM
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I still can't understand why these aren't made by someone! They hardly look complicated to design and they would sell by the bucketload! I can understand why Newman/Kent/Piper haven't produced them.... because it would mean our cams would last which means they'd loose money
Old 19-03-2009, 07:42 PM
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Canada1
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Default Camshaft wear

Roller rocker arms will not reduce camshaft wear!

The flat lifters still ride on the camshaft lobes - this is what wears out.

Now if you went to roller lifters - that is another story.
Old 19-03-2009, 07:47 PM
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does that turbo look big???
Old 19-03-2009, 08:09 PM
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Karlos G
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Originally Posted by Canada1
Roller rocker arms will not reduce camshaft wear!

The flat lifters still ride on the camshaft lobes - this is what wears out.
So whats the advantage of these then? Reduced rocker arm wear??

Originally Posted by StephenC
does that turbo look big???
It does, but it is wearing a heat shield!

Last edited by Karlos G; 19-03-2009 at 08:12 PM.
Old 19-03-2009, 08:18 PM
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Christian and Beccy
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I already know about these and am in touch with the guy that was in on the manufacture of them. I don't think they have been tested yet.
Old 19-03-2009, 08:19 PM
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Christian and Beccy
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Originally Posted by StephenC
does that turbo look big???
Yes, but also looks like it is top mounted.
Old 19-03-2009, 08:22 PM
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Brookesy
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Titan do roller rockers for cvh engines. I remember Anna Rose selling the set she had on her track car.
Old 19-03-2009, 08:25 PM
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Karlos G
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Why fit them, what do they do over normal ones??
Old 19-03-2009, 09:35 PM
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DazC
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Interesting.

Do we know if they are the same ratio as the standard rockers? I am assuming that they probably are.
Old 19-03-2009, 09:44 PM
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they look well smart, and look alot stronger than they old ones.
Old 19-03-2009, 10:32 PM
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Roller rockers are infinitely stronger than standard steel rocker arms and are more resistant to bending and breakage under high spring pressures at high rpm. Standard pressed steel rocker arms are prone to failure in high performance applications. A high rate of fulcrum wear, flexing, cracking, splitting and breakage are common problems that will result in power loss or possible piston failure due to detonation of the incoming air/fuel charge. The traditional metal tip on standard rockers literally drags across the valve tip as the rocker opens and closes causing high side loading on the valve. This inside force leads to irregular and rapid valve, valve guide, and valve seat wear in many engines. The roller tip on roller rockers eliminates this side loading action.
The use of needle roller bearings at the rocker fulcrum combined with a roller tip at the valve greatly reduces horsepower robbing friction in the valve train to provide a measurable power increase over standard rocker systems. The reduction in friction with roller rockers has additional benefits of reducing the operating temperature and foaming effect of engine oil to provide a cooler running engine.
Unlike standard steel rockers, roller rockers maintain a constant indicated rocker arm ratio throughout the full valve lift because the centre line of the roller stays constant and only its contact with the valve stem center line changes.
Old 19-03-2009, 10:35 PM
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Karlos G
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Ok that explains it!
Old 22-03-2009, 07:26 PM
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gus
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who i smaking these then


i was onto titan ages ago about these but didnt get too far
i know karl nms was doing them but he stopped using them for reasons that went over my head
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