Crank trigger disk teeth count
#4
Originally Posted by hightuner
the one on the ring gear is 360
, i will try to find info on the fsm,
, i will try to find info on the fsm,
from http://forums.maxima.org/showpost.ph...67&postcount=1
i count 180 on this pic which is supposed to be for a 3.0
#5
Originally Posted by nismology
I can see where this is headed. You're not planning on starting a brand new thread for every question you have concerning your future MS setup, are you?
#6
Man lol , i never count it , i just took someone word .
it looks like your right
its 180
I confirm this is my 3.0 96 resurfaced.
from what i read , this is too much for the ms, i wonder how much is the other one.
it looks like your right
its 180
I confirm this is my 3.0 96 resurfaced.
from what i read , this is too much for the ms, i wonder how much is the other one.
#7
Originally Posted by hightuner
Man lol , i never count it , i just took someone word .
it looks like your right
its 180
I confirm this is my 3.0 96 resurfaced.
from what i read , this is too much for the ms, i wonder how much is the other one.
it looks like your right
its 180
I confirm this is my 3.0 96 resurfaced.
from what i read , this is too much for the ms, i wonder how much is the other one.
EDIT: acutally i think an even number is needed so 360/5/2=36 and 360/6/2=30
#8
Originally Posted by rmh3093
i only have 1 more 2 more questions that I havent asked, and the info isnt necessarily related or helpful for only MS installs, its good info about the VQ motors that isnt posted anywhere yet
But to answer your question, yes it is 180 teeth. 180 teeth and 180 spaces to make up the 360° signal.
#9
Originally Posted by nismology
Cool. Just wanted to make sure we were on the same page.
But to answer your question, yes it is 180 teeth. 180 teeth and 180 spaces to make up the 360° signal.
But to answer your question, yes it is 180 teeth. 180 teeth and 180 spaces to make up the 360° signal.
#10
Alright so if the crank trigger wheel has 180 teeth... now with regards to the crank sensors... does reference signal fire a pulse once per revolution when cyl1 is at TDC? and does the position signal fire 180 pulses per revolution or 360 pulses per revolution?
#11
IIRC the REF sensor is 2 teeth at TDC, and one at 120 degrees and at 240 degrees (all relative to #1 TDC). The POS sensor is a square wave, corresponding to gaps and teeth on the ring, and used only to establish rpm, it's blind to piston position. See below...
From my first EU thread back in the day... all the crank and cam signals scoped...
From my first EU thread back in the day... all the crank and cam signals scoped...
Originally Posted by DandyMax
Didn't get a chance to get more signals scoped last night - did it this afternoon instead.
Here we go:
Cam and REF 1
Cam and REF 2
REF only 1
REF only 2
Here we go:
Cam and REF 1
Cam and REF 2
REF only 1
REF only 2
#12
Originally Posted by DandyMax
IIRC the REF sensor is 2 teeth at TDC, and one at 120 degrees and at 240 degrees (all relative to #1 TDC). The POS sensor is a square wave, corresponding to gaps and teeth on the ring, and used only to establish rpm, it's blind to piston position. See below...
From my first EU thread back in the day... all the crank and cam signals scoped...
From my first EU thread back in the day... all the crank and cam signals scoped...
#15
#16
one of the programmers on the ms2/e forum can probably write support for the crank ref + cam signals if we can draw out a timing map like the other ignition systems have...
are there any pictures of that crank ref plate? and what generates the signal for the cam sensor?
here is another photo from the FSM that migh help us out:
are there any pictures of that crank ref plate? and what generates the signal for the cam sensor?
here is another photo from the FSM that migh help us out:
#18
Supporting Maxima.org Member
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Location: Ontario, Canada
Posts: 1,204
Originally Posted by hightuner
sup guys , can anyone confirm that Vq35 cams have the same groove as the VQ30 ???
Dan posted the VQ30 cam waveform above.
The VQ35 crank and cam waveforms are given here:
http://forums.maxima.org/showpost.ph...53&postcount=3
#22
Originally Posted by DandyMax
IIRC the REF sensor is 2 teeth at TDC, and one at 120 degrees and at 240 degrees (all relative to #1 TDC). The POS sensor is a square wave, corresponding to gaps and teeth on the ring, and used only to establish rpm, it's blind to piston position. See below...
From my first EU thread back in the day... all the crank and cam signals scoped...
From my first EU thread back in the day... all the crank and cam signals scoped...
EDIT: Are all those scopes with the engine running at the same RPM?
#26
I haven't had time to check any of this, sorry. You don't have a cam sprocket/REF ring to compare? IIRC the scopes I posted above were done at idle and 2000 rpm.
Are they writing the program based on those 2 signals?
I'll try and look over your timing diagrams later tonight if I get a chance.
Are they writing the program based on those 2 signals?
I'll try and look over your timing diagrams later tonight if I get a chance.
#27
Originally Posted by DandyMax
I haven't had time to check any of this, sorry. You don't have a cam sprocket/REF ring to compare? IIRC the scopes I posted above were done at idle and 2000 rpm.
Are they writing the program based on those 2 signals?
I'll try and look over your timing diagrams later tonight if I get a chance.
Are they writing the program based on those 2 signals?
I'll try and look over your timing diagrams later tonight if I get a chance.
they said if I could draw a timing diagram with the crank ref and cam signal (in degrees) then they could write the code... but the i has to be relative to degree and the scopes are in milliseconds
if I could get a scope of the crank ref vs crank pos and cam vs crank pos then there should be no issue in converting that to degrees
thanks for your help!
#28
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iTrader: (3)
Join Date: Oct 2002
Location: Ontario, Canada
Posts: 1,204
Originally Posted by rmh3093
no i dont have cam sprocket or crank ref ring to compare too...
they said if I could draw a timing diagram with the crank ref and cam signal (in degrees) then they could write the code... but the i has to be relative to degree and the scopes are in milliseconds
if I could get a scope of the crank ref vs crank pos and cam vs crank pos then there should be no issue in converting that to degrees
thanks for your help!
they said if I could draw a timing diagram with the crank ref and cam signal (in degrees) then they could write the code... but the i has to be relative to degree and the scopes are in milliseconds
if I could get a scope of the crank ref vs crank pos and cam vs crank pos then there should be no issue in converting that to degrees
thanks for your help!
#29
Originally Posted by eng92
The signals are periodic. You can calculate the degrees of separation directly from the scope outputs
... from the looks of the cam+crank ref 2 scope, it seems like there are exactly 150ms between each crank trigger and each grid is about 10ms apart so that would mean 120/180 = .8 degrees per 1ms or 8 degrees per 10ms
it also appears from those graphs that on the crank ref plate the second tooth at TDC starts 10 degrees after the first one.... that what i have been able to come up with
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11-24-2018 01:39 AM