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roller help
I dont know much about solid rollers (except they are expensive).
What does the joiner/bar that runs between each set of lifters do? Do solid roller lifters sit higher than normal lifters? Will I need to change pushrods? I am currently running a .560 lift solid flat tappet will I need to change valves? http://www.powerandperformancenews.c...0_RLRs_001.jpg |
Call Comp Cams at their 800 number. They'll ask you a bunch of questions and make suggestions. Ask for a Ford guy.
Bill Stradtner |
roller lifters
I will try to answer your question
Roller lifters are designed to follow a roller cam and the bars are to keep the lifters running parell to each other.Different Manufactures aquire this with different means, most patented, If you are planning on going to a roller you will nead a complete confersion kit, cam,lifters,pushrods ,Dist gearA new timeing gear set is a good idea at the same time. At this time I would check cam bearings They can tell you a lot about the condition of the other bearings in the engine. Hope this helps. wiroto |
There is hp to gain with a solid roller. A solid roller cam has much steeper ramps than a hydraulic cam so this requires a much stiffer valve spring with seat pressure being 185lbs and up depending on what cam you choose. The only downfall I see is if your running a 302 based motor you might have to pull the heads to install the taller solid roller lifters. This was the case on my 302 with Comp cams 288 solid roller cam. Also prolonged idling will starve the roller lifters of oil and wear out the rollers prematurely.
Jeff |
Jeff,
On idling, well maybe, but then again maybe not. The picture of the Endure-X is one of the tricks that can help avoid this. There are also other solid roller lifters which supply oil to the roller bearings and, by default, to the cam, like Crower 66215H, Isky Red-Zone 3972-RH. These two oil even better than the Endure-X; more like the Gen III pictured above, BUT Comp doesn't make Gen IIIs for SBF. With a little care taken to manage the oil distribution in the gallies (exactly how is dependant on the block you use) and a good blue printed oil pump. You can avoid these issues. My solid roller cam only requires spring pressures of 150lb on the seat and 420 open and provides very good power through 7000 rpm. (see thread "Max Engine RPM" in the engine/drivetrain forum on GT40s.com for a more indepth discussion. There is also a good discussion here: Solid Rollers Lynn |
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