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Old 08-28-2003, 02:05 PM
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Opinion on variable lifters, rhoads type

I was hoping to get some opinions on the rhoads type lifters. Has anyone had any luck with them any bad luck with them. I know that they are noisey any other drawbacks. What are the benefits?

Thanks

John

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Old 08-28-2003, 07:42 PM
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Not worth the trouble, A lot of people i know have tried them and removed them in a very short time.
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Old 08-28-2003, 08:01 PM
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This is kind of a fluke situation but I remember working on a 460 Ford that was in a boat, it would idle fine but as soon as the guy opened the throttle it would shear cam gear off. After doing this twice he brought it to the shop. He had installed a high lift cam and never bothered to check spring coil bind, as soon as lifters pumped up valvetrain would lock up. Replaced springs it ran good.

So they do work but Ive heard that theyre rough on valvetrain components because at low speeds the opening and closing ramps on cam are eliminated because of lifter bleeding down.

Last edited by Greg Latvala; 08-28-2003 at 08:07 PM.
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Old 08-28-2003, 08:56 PM
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I don't think they are worth the expense. You can properly set up a cheap hyd. lift cam to turn 700o or better. Any more than that, it's time for solid lift in my book.
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Old 08-29-2003, 12:06 AM
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I dunno.I think kinna if these really worked as they say and increase lowend wile making the top end your big cam is meant for,there would be nobody buying roller cams.
Also seems to me if they lower lift and shorten duration at low rpm.Don't it make ya think maybe they are collapse prone??
Also how do you adjust your valves???1/2 turn past zero lash???That will turn into 5 turns past once ya rev the engine.
I just dunno,I allways wondered,but I'm not gonna be the one to find out.
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Old 08-29-2003, 09:31 AM
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Thanks, kinda what I have heard before. I guess if they were that good everyone would use em huh.
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Old 08-29-2003, 11:29 AM
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I tried the roads when they first came out, I could tell the difference, but they were to noisy. I changed them out for a set of crane variable duration lifters, now thats all I use in everything.
Installed right, they will work. HTH.

Troy
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Old 08-29-2003, 12:13 PM
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I use the Crane anti-pump lifters and have had no trouble with them. They do give you a little 'cake and eat it too' action by taming a big cam on the bottom end but allowing it to do it's thing on the top end. Not noisy like Rhodes.

This item probably fits into the category of something that works somewhat but not enough to pull you out of the driver's seat or knock 1 second off your quarter mile times but is easy to blame for any number of engine problems, associated or not.
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Old 08-29-2003, 10:53 PM
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Mostly they just cut down on overlap, causing a lumpy cam to not be so lumpy. I knew a guy who had some on his Ford, & he cut the noise down quite a bit by using cast aluminum valve covers.
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