100 series 1hz advancing fuel pump timing
Submitted: Tuesday, Oct 16, 2007 at 19:56
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bigaz
has anyone had any experience with advancing the timing of the fuel pump on the 100 series 1hz. i've heard that the timing in the 80 series 1 hz fuel pump is earlier and more power can be gained in the 100 by setting the timing to be the same as the 80 series.
Reply By: furph - Tuesday, Oct 16, 2007 at 20:42
Tuesday, Oct 16, 2007 at 20:42
I have a '97/1hz. trayback.
Some years ago I advanced the static by timing by 2deg. I also derated the full fuel by 1/3 turn (back) on the pump.
The result was :
It pulled better at around 2000revs.
It no longer blew black smoke out at 2000revs. (or any other time)
The fuel economy,recently did 17000km. around ozz towing a 14'6" van averaged 15.4l/100km.
It has just turned over 200000km.
But too much advance can be fatal, beware!
furph
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Reply By: bigaz - Tuesday, Oct 16, 2007 at 21:44
Tuesday, Oct 16, 2007 at 21:44
yah, i have been told that too much advance can lead to problems with the big end.
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