History of the ported VW head? Styles that have come and went....
Fastbrit:
Quote from: rocket ron on June 24, 2009, 20:59:20 pm
what about the scat split port heads, one head per cylinder
seemed to make good power, one of the early 90's brit racers had them on his car but cant remember which one ???
John Brewster at Autocavan. Terrible heads. Seized valve guides was a problem due to lack of oiling. Needed an externally-fed spray bar to direct oil onto valve springs/stems to stop them seizing in the head.
Sarge:
Gotta' love that cheese ball glass fuel filter in close proximity to a hot exhaust pipe in Rick's picture. See guys, small fuel line; fast race car :o ;)!
.:
http://cal-look.no/lounge/index.php/topic,9724.0.html
rick m:
Good point Keith. Think about how much of the exhaust guide or boss would be exposed to the exhaust port on the heads. Superflows casted this type port. Dean Lowry really liked them but then again they put a lot more meat around the area and I believe the port had a little less angle. They were interesting but you did not see to many of them. Probably for the very reasons you stated.
I liked the ingenuity of the early guys. Still, Fumio's heads always seemed to work no matter who ran them and they were not as radical as some would think. Dean Lowry did the heads that were on my teal green 67 and the ports were not huge. They were welded ported heads but I was impressed at the flow numbers Dean pulled out of them for me. I wanted all the air speed to work for me with no more than .520 lift at the valve for my street engine. If you listen to my burnout on Ocean Street Video, I had my 2110cc motor at 7,000 rpms and it was buzzing along nicely.
I am impresed at what the CNC CB heads do out of the box. You'd pay $1,200 to $1,400 25 years ago for what you can buy in a set of wedgeports today for less. The hobby has progressed nicely with more choices and parts available than in the early years.
Rick M
Jim Ratto:
the sideways D port "wedgeports" a la Lonnie Reed, but done on my 040 heads by Jeff Denham (for SCAT) were probably the best street head I have ever driven. Combined with 9.3:1 and an 86C, it was almost too much power. No camminess, just explosive, neck-wrenching power no matter what rpm or gear. My old 2276 was the motor I loved most. You could hear the snap and the viciousness in the bite of the exhaust note. With big heavy tires, anchor Jap BRMs, full interior, full tank of 92 octane, spare tire, etc, that motor went 12.91, 12.74 and 12.66, all with 40mm vents.
They get my vote.
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