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Title: Stealth67, what have you noticed from the changes? Post by: The Ideaman on November 17, 2007, 18:00:25 pm 1776 From the other forum. Thinking of building something similar for my brother in AZ. DMS crank Rimco 13 lb flywheel Berg 6.5 lb power pulley Engle W125 w/magnum gears 8.9 CR Bosch 010 stock valve ported heads dual springs, ti retainers 1 1/2 header dual qps 44 IDFs 36 vents 125 mains 30 weight Kendal 28 mpg highway over 40,000 miles 18-20 mpg in town or traffic Same engine with VW 1.25 rockers 9.3 CR welded, ported CB 044s 40 x 35.5 ti retainers Berg/Stinger S4 ignition 1 5/8 w/ dual qps or 2 1/2 Magnaflo 48 IDAs w/37 vents 135 mains 25-26 mpg highway for 20,000 miles 14-16 mpg in town or traffic 10 or less with my foot in it. Title: Re: Stealth67, what have you noticed from the changes? Post by: stealth67vw on November 18, 2007, 16:01:44 pm With the stock ported heads and 44 IDFs the engine transitioned off idle a lot smoother. With the 044s and IDAs there was a stumble around 1800-2200 rpm that we could not tune out of it. Jim Ratto, Jerry Young (owner of Buggy House) and myself could not get rid of it so I just got used to it since I mostly drove it on the freeway. The powerband was moved up compared to the IDF configuration but still very drivable. If did it over again, which I plan too it will use 94s and I will sleeve the lifter bores. Wobbled lifter bores was the reason I tore it down, oh and to install a 78.4 crank.
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