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PostPosted: Wed Apr 09, 2014 12:29 am 
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Club Staff
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Joined: Wed Jul 13, 2005 12:06 am
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Location: Perth, Western Australia
Car Model: ST205
Just a quick question. I've been asked by the guy doing the loom for my track toy car which pins on the ST205 dizzy relate to the cam position trigger. It looks like it should be the pin labelled 'Ne'. Anybody care to confirm?

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1994 Toyota Celica GT-Four ST205WRC JDM 269bhp @ 0.9bar
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PostPosted: Wed Apr 09, 2014 2:04 pm 
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WRC
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Hi,

iirc, NE is the crank trigger and the G2 the cam home signal

hope it helps, and if not you just have to change the two wires on the ECU, on haltech it is pretty easy as you have a table where you can
see both signals counting, cank has two times the counts of the cam, so pretty easy to do the job :)

greetz

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PostPosted: Wed Apr 09, 2014 6:10 pm 
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Group B
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Location: Bournemouth
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NE is effectively crank trigger. Either G1 or G2 for cam wheel. From Memory, G1 is the one that activates for No.1 firing so is probably the one you want.

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PostPosted: Wed Apr 09, 2014 11:09 pm 
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Location: Perth, Western Australia
Car Model: ST205
Thanks guys. I was thinking that as the COP cherry hall sensor uses a single slotted disk mounted on the exhaust cam wheel I could use the Ne signal? Is G1 better from a cam timing point of view? It appears to e 90degrees offset from Ne. Am I being dumb?

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Don
GT4DC Chairman
1994 Toyota Celica GT-Four ST205WRC JDM 269bhp @ 0.9bar
1994 Toyota Celica GT-Four Special GT 590bhp @ 1.8bar
1989 Van Diemen RF88/89 Formula Ford 1600
2008 Nissan Patrol GU 3.0L ZD30DDTi 154bhp


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PostPosted: Thu Apr 10, 2014 11:55 am 
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Location: Bournemouth
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viewtopic.php?f=13&t=5973&hilit=crank+trigger&start=46

Also, something I wrote a long time ago when researching signals ready to install my new link G3. I have made the assumption of injection during intake stroke to conlude that G1 is just before No.1 firing. I would probably want to repeat a plot of dizzy signals vs. scope probe next to No.1 plug lead to be 100% certain.

https://dl.dropboxusercontent.com/u/831 ... ignals.pdf

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PostPosted: Fri Apr 11, 2014 12:25 am 
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Joined: Wed Jul 13, 2005 12:06 am
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Location: Perth, Western Australia
Car Model: ST205
Good feedback. I've passed your info onto my wiring guru :-)

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Don
GT4DC Chairman
1994 Toyota Celica GT-Four ST205WRC JDM 269bhp @ 0.9bar
1994 Toyota Celica GT-Four Special GT 590bhp @ 1.8bar
1989 Van Diemen RF88/89 Formula Ford 1600
2008 Nissan Patrol GU 3.0L ZD30DDTi 154bhp


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