I was there back in the day when 12" stubs were the racing exhaust of choice.
Couldn't have kept it a secret for long, but how much more horsepower would those Chet Herbert roller cam, Enderle injected, 12:1, 301"s have made back in '62 if they'd had a best science header and collector?
Ever wish you knew about header collector design when no one else did?
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Ever wish you knew about header collector design when no one else did?
Jack Vines
Studebaker-Packard V8 Limited
Obsolete Engineering
Studebaker-Packard V8 Limited
Obsolete Engineering
Re: Ever wish you knew about header collector design when no one else did?
They had appropriately sized headers in '62 on Chev powered Sprintcars and modifieds, anything else would have been a budget thing.
Tuned length was all the rage here in '63.
Tuned length was all the rage here in '63.
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Ignorance leads to confidence more often than knowledge does.
Nah, I'm not leaving myself out of the ignorant brigade....at times.
Nah, I'm not leaving myself out of the ignorant brigade....at times.
Re: Ever wish you knew about header collector design when no one else did?
Yeah, I starting going to short track around '61, so tuned length wasn't a thing in Alabama in '61-'62. I remember a foot of flame out the stubs.
Jack Vines
Studebaker-Packard V8 Limited
Obsolete Engineering
Studebaker-Packard V8 Limited
Obsolete Engineering
Re: Ever wish you knew about header collector design when no one else did?
That's nothin' compared to the revolution in 2-strokes with the "reverse cone" expansion chamber came along in near the same era. When we started playing with that idea I about drove my HS shop teacher crazy rolling cones. For "extra credit" he made me make drawings and do the math before I could use the roller. LOL 50cc Tohatsu test mule. Good times.
How about the "trick" when we painted the collector extensions and cut them where the paint burned off.
How about the "trick" when we painted the collector extensions and cut them where the paint burned off.
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Re: Ever wish you knew about header collector design when no one else did?
That would be a LONG time ago ... the Phillip H. Smith book was first released in 1962. Re-printed and released several times afterward.
http://www.rmcompetition.com
Specialty engine building at its finest.
Specialty engine building at its finest.
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Re: Ever wish you knew about header collector design when no one else did?
Oh yea; the title of that book is "The Scientific Design of Exhaust and Intake Systems".Walter R. Malik wrote: ↑Mon Oct 23, 2023 8:52 pm That would be a LONG time ago ... the Phillip H. Smith book was first released in 1962. Re-printed and released several times afterward.
http://www.rmcompetition.com
Specialty engine building at its finest.
Specialty engine building at its finest.