Valve rotators

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travis
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Valve rotators

Post by travis »

I’ve got a set of heads with intake and exhaust rotators. For a very mild under 5000 rpm build where longevity is more important than outright power, are the rotators a bad idea? Spring pressure will be a bit higher than stock but nothing crazy (hft application). Do the rotators still work properly with a little more spring pressure?

Also...are the valve locks different with the rotators?
jed
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Re: Valve rotators

Post by jed »

Most cam company's say don't use them with performance cams. However I have seen them used with
mild performance cam with no apparent problems. I would not use them.
Valve locks are the same
PRH
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Re: Valve rotators

Post by PRH »

The story I heard is...... not needed with unleaded fuel.

True or not? No idea.

But...... I have seen way more failed rotators than retainers....... and none of the common modern gas powered stuff seems to use them anymore.

I usually get rid of them myself.
Somewhat handy with a die grinder.
Dan Timberlake
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Re: Valve rotators

Post by Dan Timberlake »

what heads ? what valve seats?
Cubic_Cleveland
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Re: Valve rotators

Post by Cubic_Cleveland »

What are you guys using when getting rid of exhaust rotators on SBC heads which have a corresponding taller spring installed height?
Walter R. Malik
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Re: Valve rotators

Post by Walter R. Malik »

Cubic_Cleveland wrote: Sat Nov 02, 2019 4:30 pm What are you guys using when getting rid of exhaust rotators on SBC heads which have a corresponding taller spring installed height?
Lots of companies offer a .100" taller free height 1.260" O.D. valve spring.
Although, some Chevy heads use a shorter spring on the exhaust side when using the rotator.
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Cubic_Cleveland
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Re: Valve rotators

Post by Cubic_Cleveland »

Walter R. Malik wrote: Sat Nov 02, 2019 5:42 pm
Cubic_Cleveland wrote: Sat Nov 02, 2019 4:30 pm What are you guys using when getting rid of exhaust rotators on SBC heads which have a corresponding taller spring installed height?
Lots of companies offer a .100" taller free height 1.260" O.D. valve spring.
Although, some Chevy heads use a shorter spring on the exhaust side when using the rotator.
Thanks Walter
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