WedgeWorks1 Mike Perkins Ellicott City, Maryland (460 posts) Registered: 07/06/2008 08:07AM Main British Car: 1980 Triumph TR8 3.5 Litre Rover V8 |
Re: Lifters
Both Group 44 & Tim Lanocha are using solid roller lifter cams
Michael |
roverman Art Gertz Winchester, CA. (3188 posts) Registered: 04/24/2009 11:02AM Main British Car: 74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L |
Re: Lifters
Part of the "problem" with this series of engines is .842" lifter dia., which limits ramp speeds for flat tappets. Other is base circle of cam is reduced approx. .12" as result of stepped cam bearings. I.E. later V6's and 350's using largest dia. all the way back. This also increases torsional strength of cam. For those wishing to sleeve lifter bores,this opens up some options. You could "carefully" weld gusset plates over lifter areas. Two-fold benefit. 1. increase strength in highly stressed areas for serious cams,(mushroom/roller). 2. Reduce oil losses directly onto crank/etc. With sleeved bores you could readily use Chevy hyd/roller lifters,(cheep), with-out oil pressure bleed-off problems. Or how bout "gutting" the internals, put top piece back-in and have a cheep/strong, mech. roller lifter with longer pushrod seated closer to roller side-trusting action,(stronger). "Maybe" I can weld up the back-four bearing areas enough for "smarter" bearings? Don't try this at home! Food for thought. Regards, roverman.
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