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Author Topic: my friends turbo project  (Read 177 times)

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Offline m in sc

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my friends turbo project
« on: October 20, 2017, 12:43:28 PM »
what to do with a ujm thats was hacked beyond salvation by 3 previous owners? hack a hell of a lot more.

David did all the fab work, i did tuning, electrical (including building an ignition), will do porting of head and general instigation and bad idea supplier.  only thing actually purchased for this was the turbo, and oil lines. (had them made). rest was stuff i literally had laying around. exhaust is almost exclusively made from damaged rd headpipes, tail pipe is a dinged headpipe from an s2. exhaust runners are within 1/4" length of each other. intake is a hand made sheet metal unit, and this will eventually get a tb and fi.  this will be torn down really soon for final cleanup and a motor refresh.  last good run was 75mph in 3rd. no idea about top speed yet. needs some internal help. wastegate set to 7-8psi.

77 xs400. 't-type'

get off my lawn.

Rock Hill, SC


Offline SoCal250

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Re: my friends turbo project
« Reply #1 on: October 20, 2017, 07:06:20 PM »
Cool  :cheers:
91 TZR250R (3XV);  89 FZR400W
79 RD400F Daytona;  77 RD400D - mod project
75 RD250B (350 project);  75 RD200B (in boxes)
75 RD125B (stock,<1K mi);  75 RD125B (project: RD/TA200);   05 FZ6
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Offline MarkT

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Re: my friends turbo project
« Reply #2 on: October 20, 2017, 08:19:53 PM »
Love it!  Sure wouldn't use the word "hack" in regards to the turbo install.

1963 Yamaha YG1-T, 1965 Yamaha MG1-T,  1966 Sears Allstate 250, 1970 Yamaha CT1, 1972 Yamaha R5 - 400 project bike, 1981 Yamaha DT175, 1988 Yamaha DT50, 1990 Yamaha Super-DT50