Titanium valves with hydraulic cam ?

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Titanium valves with hydraulic cam ?

Post  JBR-3 on July 11th 2014, 11:15 pm

Why, you ask ?
In a nutshell, the goal would be to have your hydraulic cam motor rev higher.

IF..IF... you could get some cheap used Ti valves that were not beat to hell and could then
be cut down/reconditioned to a smaller size (to fit a BBF head)....

You could still run light pressure hydraulic valvesprings, which would
1.) not kill the valves
2.) not flatten the cam lobes

All you're doing essentially is making the valve lighter so the same spring
can control it at a higher RPM.

Now, the key here is the cheap price on the valves. I wouldn't spend
$1800 on brand new Ti valves for this unless I hit the lottery.

Has anyone done this, or heard of it ?

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Re: Titanium valves with hydraulic cam ?

Post  dfree383 on July 12th 2014, 12:05 am

The lifter is where the problem is at
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Re: Titanium valves with hydraulic cam ?

Post  DanH on July 12th 2014, 6:24 am

dfree383 wrote:The lifter is where the problem is at
the lifter becomes the problem only when slack becomes present.. lighter valves help keep the slack out

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Re: Titanium valves with hydraulic cam ?

Post  torino501 on July 12th 2014, 8:25 am

with that being said why are there no 5/16 valve stem out there for any of the bbf heads or is there?(lighter)

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Re: Titanium valves with hydraulic cam ?

Post  dfree383 on July 12th 2014, 9:33 am

You can order anything you heart desires.

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Re: Titanium valves with hydraulic cam ?

Post  JBR-3 on July 12th 2014, 10:17 pm

Dfree,
What is the problem with the lifter ?

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Re: Titanium valves with hydraulic cam ?

Post  DanH on July 13th 2014, 6:14 am

torino501 wrote:with that being said why are there no 5/16 valve stem out there for any of the bbf heads or is there?(lighter)

T?F A460 heads, can be had new with 5/16 stems part#'s for the ones that have them, check with Summit.

5/16 stems years ago were common for the Clev & BBF plus chevys

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Re: Titanium valves with hydraulic cam ?

Post  KY JELLY on July 13th 2014, 9:04 am

Are you running out of cam or are you running out of spring ?
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Re: Titanium valves with hydraulic cam ?

Post  dfree383 on July 13th 2014, 1:39 pm

JBR-3 wrote:Dfree,
What is the problem with the lifter ?

They pump up because things are happening too fast. Save yourself a lot of agravation and just go with a mechanical flat tappet.

Plus your looking at most regular headed 460 based engines peak at about 6500-6800 rpm anyway.... Within the realm of hydraulic stuff. I think you solving a problem for no reason.

If you have the valves by all means use them, but I wouldn't go out of my way on a hydraulic flat tappet your better of spending the time on a number if other areas.
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Re: Titanium valves with hydraulic cam ?

Post  rmcomprandy on July 13th 2014, 1:57 pm

This sounds like a cure seeking a problem...  Wink 

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Re: Titanium valves with hydraulic cam ?

Post  dfree383 on July 13th 2014, 2:35 pm

rmcomprandy wrote:This sounds like a cure seeking a problem...  Wink 

Exzackary!
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Re: Titanium valves with hydraulic cam ?

Post  DanH on July 18th 2014, 5:33 am

rmcomprandy wrote:This sounds like a cure seeking a problem...  Wink 

why not run the heavy valves / reatainers ?  
 
A lighter valve/retainer can use  lighter spring pressure, sounds like a good reason to not use the heavy parts.

wouldn't less springs pressure help a flat tappet cam live?

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Re: Titanium valves with hydraulic cam ?

Post  KY JELLY on July 18th 2014, 8:29 am

It takes an aggressive lobe to turn the higher rpm , valve weight or materials has more to do with the spring living than the lifter following the cam .
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Re: Titanium valves with hydraulic cam ?

Post  rmcomprandy on July 18th 2014, 9:24 am

KY JELLY wrote:It takes an aggressive lobe to turn the higher rpm , valve weight or materials has more to do with the spring living than the lifter following the cam .

Actually, LESS aggressive, lazy lobes which are large in area will run at higher RPM easier, with less valve spring pressure.
Giving up a lot of torque is the major problem with running them.

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