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Location:
Brisbane
Registered:
December 2002
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Tacho compatible?
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Fri, 07 March 2003 10:47
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Guys im putting the v8 in my car right...will the standard electronic tacho work and be compatible with the 8, or will i need a new tacho?
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Location:
berala sydney
Registered:
November 2002
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Re: Tacho compatible?
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Fri, 07 March 2003 17:59
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new taco man will cost you heaps to get it reconfigered
cya knackers
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Location:
sydney
Registered:
March 2003
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Re: Tacho compatible?
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Sat, 08 March 2003 01:27
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what v8 r u runnin
usually if the original engine is a single coil and the new engine has multiple coils is when u get problems
theres things u can buy to make the tacho signal compatible or i have some tiny electrical devices that can modify the signal that might work
is it a lexus v8? if it is then u might need an adapter
7m gte with 3 coils and 1jzgte with 6 coils i havnt been able to get a good signal for the tacho
u can use an msd tacho adapter on the 7mgte to get the tacho to work ive done this and it works
soon ill be tryin the msd tacho adapter on a 1jzgte and hopefully itll work too
these msd adaptors cost about 120 bucks
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Location:
Barossa valley SA
Registered:
January 2003
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Re: Tacho compatible?
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Sat, 08 March 2003 03:08
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sideshow have you still got the converter for the 7M? if so do you want to sell it? if not where does one purchase them.
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Location:
sydney
Registered:
March 2003
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Location:
Brisbane
Registered:
December 2002
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Re: Tacho compatible?
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Sat, 08 March 2003 05:03
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no the engine is older than the 5me...so yeah i think ill be buying a new one 
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Registered:
May 2002
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Re: Tacho compatible?
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Sat, 08 March 2003 05:31
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Sideshow,
What have you got that will allow me to use my original MX83 tacho (originally running a 7M-GE) with the 1UZ I'm now running?
I've been told I need to get a 4-cyl unit (as I run 2 4-cyl ignitors, 1 for each bank, and the tacho signal is taken from one of these...)
If you've got something that will help, I'm all ears!
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Location:
sydney
Registered:
March 2003
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Re: Tacho compatible?
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Sat, 08 March 2003 06:52
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um r u runnin factory computer
if u r then all u need is the ig- signal from the diagnostic plug
take that rpm signal and run it thru the msd tacho adapter and hope it works
i cant garantee itll work
i know it works on a 7mgte
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I supported Toymods
Location:
melbourne.victoria.austra...
Registered:
June 2002
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Re: Tacho compatible?
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Sun, 09 March 2003 08:51
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robbo, can u graft an aftermarket one in place of the toyota one dude?
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Location:
Brisbane
Registered:
December 2002
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Re: Tacho compatible?
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Sun, 09 March 2003 08:54
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the factory ones electronic if thats wat u mean...
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Location:
sydney
Registered:
March 2003
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Re: Tacho compatible?
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Sun, 09 March 2003 09:50
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just leave the tacho till last
connect the ig- wire from the engine diagnostic plug to the original tacho wire which would have been connected to the original coil and see if the tacho works
its a trial and error thing
if it doesnt work send me an email and i can tell u some things to try to get a better signal output to yr tacho
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Location:
Montrose, VIC
Registered:
May 2002
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Re: Tacho compatible?
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Sun, 09 March 2003 09:59
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It can be sorted out one way or another - even if it comes to an electronic divider circuit on the coil.
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Location:
Sydney
Registered:
May 2002
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Re: Tacho compatible?
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Sun, 09 March 2003 12:14
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or just drive without a tacho.. 
how about getting the motor in first
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Location:
Newcastle, NSW, Australia
Registered:
May 2002
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: Tacho compatible?
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Mon, 10 March 2003 03:30
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On a side note, Grant, do you know if a 1GGTE will be able to run the factory GA61 (digital same as Robbo) factory tacho?
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Location:
North Sydney
Registered:
May 2002
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Re: Tacho compatible?
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Mon, 10 March 2003 10:48
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sideshow, i've already tried hooking it striaght up to the ig- or the same as the negative side of the primary coil of the igniter.
It doesn't work.
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Location:
sydney
Registered:
March 2003
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Location:
Montrose, VIC
Registered:
May 2002
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Re: Tacho compatible?
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Mon, 10 March 2003 11:06
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I'll look into making a multiplier/divider circuit for my own reference over the next few days.
Aside from that, another way around it is to fit a hall switch onto the front of the crank, and a chopper disc with 3 blades. Then run it to a simple amplifier/capacitor/inductor circuit (similiar to a coil+ignitor) to produce an adequate voltage to keep the tacho happy.
On the 302 you MIGHT be able to pinch something from the front of a later model (multi coil, not dizzy) falcon V8? Swap the timing case or something?
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Location:
Barossa valley SA
Registered:
January 2003
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Re: Tacho compatible?
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Mon, 10 March 2003 11:41
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Hey sixworks If you guys make an tach adaptor for a 7mgte to Ma 61 (the equivalent of the MSD #8920) for under $100 then post the details of how to order them and Ill get one straight away.
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