Righto fellas whats the measurements of these rear boost ports width and height plus most important depth and is there a certain angle for the top of the boost port.
Mc Bob.
US820 Rear Boost ports
Moderator: Rob Voska
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mcbob
- Posts: 505
- Joined: Sat Jun 16, 2007 8:31 pm
- Vintage Karting items owned: Everything Mac but a Kart but who know's ?
- Location: Hanging by my toenails in Australia.
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US820 Rear Boost ports
Righto fellas whats the measurements of these rear boost ports width and height plus most important depth and is there a certain angle for the top of the boost port.
Mc Bob.
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Roger Mulkey
- Posts: 3
- Joined: Fri Jul 20, 2007 12:00 pm
- Vintage Karting items owned: 1963 SAE, 1966 SAE, 1972 Margay
Re: US820 Rear Boost ports
Hi Mc Bob, This is the port layout of a Big "J" 820 from 1964. The boost "8" ports are done with a 1/2" ball end mill on a Bridgeport with head at 20° off vertical. Roger