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Shift light?
by
Ian0391
on 27 Jun, 2017 00:52
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Hey guys,
Long story short, Im building a fairly powerful compound turbo mtdi mated to a manual valve bodied 010 automatic. I do have a working tach, however I'm trying to figure out how to add a shift light so I don't over rev accidentally. My pump has the governor modified so it will continue to increase fuel until well after the motor tears itself apart. Has anyone tried this before?
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#1
by
libbydiesel
on 27 Jun, 2017 14:59
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The motor won't tear itself apart. The limiting factor on these engines is fuel delivery, not mechanical. Rev away. Your fuel economy will be bad and your emissions will be high, but you really won't damage the engine.
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#2
by
Ian0391
on 27 Jun, 2017 15:35
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My pump is heavily modified, on the flow bench in continues to. Increase fuel well past 6500rpm
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#3
by
vanbcguy
on 28 Jun, 2017 02:48
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The injection pumps can't really get over 6500 RPM since the rollers start skipping on the camplate around there. The actual engine block, crank and rods will do 6500 without issue. Remember the gasser versions of the same engine series have factory redlines around there and aren't built as stout.
You should be fine...
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#4
by
Ian0391
on 28 Jun, 2017 06:19
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I thought the issue on these was valve float after 5500 since there's so little clearance to the pistons.
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#5
by
vanbcguy
on 28 Jun, 2017 10:58
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There's quite a few people on here with juiced up engines hitting 6k+ pretty regularly.
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#6
by
libbydiesel
on 29 Jun, 2017 01:24
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You might consider installing an actual rev limiter rather than a shift light. RPM input into an Arduino and out to n75 valve between intake and LDA would be all that it would take. Very minimal code, just cut the N75 at the desired rpm.
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#7
by
vanbcguy
on 29 Jun, 2017 20:58
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I have that feature in my VNT controller... ☺️
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#8
by
BGA
on 01 Jul, 2017 07:02
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A question to vanbcguy. So yr Arduino/VNT is up and working? How much of it are you/have you made official on internet or preparing to sell hardware and code?
Ian0391, Sorry to hijack your thread.
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#9
by
vanbcguy
on 02 Jul, 2017 04:03
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Yeah the code is freely available along with the board design etc... Everything I've done is published. If you search "vanbcguy" on github.com you'll find it. I'm not planning on making a commercial product or anything, what you see is what you get.
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