Anyone have or know of a link to this?
TSB on pre ignition knock
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TSB on pre ignition knock
Greg
Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.”
― Albert Einstein
80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.
The list changes.
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Hey Greg,
I remember finding it amongst the files on the Yamaha parts fiche site a few years ago. It referenced a problem with the vac. adv. unit on the later model bikes....IIRC the 81's, and that they actually had a different vac. adv. unit for the fix.
I also think I remember someone/Xsive posting a copy of it on our site, but I didn't make a note of it!
T.C.T. C. Gresham
81SH "Godzilla" . . .1179cc super-rat.
79SF "The Teacher" . . .basket case!
History shows again and again,
How nature points out the folly of men! -
Greg
Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.”
― Albert Einstein
80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.
The list changes.
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I would imagine the leaner burn needed a bit more advance....a bit sooner.
Coulda' just richened things up a bit, but guess that woulda' been counter productive for the emmissions gods
. Bettin' largest percentage here don't have this issue due to second option, plus we get an little extra kick in the mid-range
.
81H Venturer1100 "The Bentley" (on steroids) 97 Yamaha YZ250(age reducer) 92 Honda ST1100 "Twisty"(touring rocket) Age is relative to the number of seconds counted 'airing' out an 85ft. table-top.Comment

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