Author Topic: vacuum at WOT  (Read 452 times)

Offline Miles

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Re: vacuum at WOT
« Reply #15 on: October 03, 2017, 05:45:08 AM »
Cliff,
Thanks for the info. I  bought mine in October 2011, sounds like the same ones you had. I'll be pulling my engine and tearing it down when I get a chance. Just hope the metal didn't wipe the crank or cylinder walls. At the least I'll need bearings, cam, lifters, rockers and push rods.
Did you get the aluminium or the steel enduros?
Al

Offline Cliff Ruggles

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Re: vacuum at WOT
« Reply #16 on: October 05, 2017, 04:54:01 AM »
Steel Enduro's.

The only other full roller rocker arms we've used here w/o issues have been Harland Sharp or Crane Gold Race......

Offline Miles

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Re: vacuum at WOT
« Reply #17 on: October 14, 2017, 10:29:20 AM »
Cliff,
Are you using the OF shaft with the solids as that was the camshaft you already had in it when you had lifter troubles? If you were to start from scratch would you use the old faithful or a sollid roller camshaft?

Offline Cliff Ruggles

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Re: vacuum at WOT
« Reply #18 on: October 14, 2017, 12:08:26 PM »
Not having lifter troubles, they are rock solid now since 2009.  The problem was with the PRW stainless steel full roller rockers.

Every set we put in service now has failed on the roller tip end developing WAY too much clearance between the pins and rollers and putting a LOT of ground up metal into the assemblies......Cliff

Offline Miles

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Re: vacuum at WOT
« Reply #19 on: October 15, 2017, 05:16:17 AM »
I understand about the rockers and metal in the oil as that is what I now have, but I'm wondering if you chose the hydraulic cam and solid lifters as you already had the camshaft installed? Would you use a solid camshaft if you were starting over or is there an advantage using the OF camshaft with the solid roller lifters over a solid grind?
Al

Offline Cliff Ruggles

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Re: vacuum at WOT
« Reply #20 on: October 16, 2017, 03:04:49 AM »
The "hybrid" set-up works well on that cam because it is an older design.  Tight lashing the HIPPO solid roller lifters simply takes the hydraulic action out of the equation, pretty much like have a true anti pump-up hydraulic lifter in there.  It's a great set-up and trouble free now for many years, and the quietest valve train I've ever had on one of these engines.

I'd go this route again w/o hesitation.  It's a little bit of a PITA to lash the valves on my car as the wiper motor is in the way of removing the drivers side valve cover and getting in there to set the valves, but worth the extra effort.....IMHO......Cliff