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Sc400 Tach issue 2jzgte swaped..

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Old 01-13-11, 06:03 PM
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CHASER4LIF
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Default Sc400 Tach issue 2jzgte swaped..
So a buddy of mine has a sc400 with a 2jzgte swap done... for someone reason we cant get the tach to work properly... We did exactly what everyone does on the sc300 tach, which is to jump the r109 resistor if i can recall.. we did that with his 2 gauge clusters he has from a sc400 and its not working well.... is their a salutation to this issue? or does the sc400 have different resistor to jump?
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Old 01-13-11, 07:46 PM
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You need to use a tach adaptor. The Dakota digital one works for me
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Old 01-13-11, 08:04 PM
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what about the msd tach adapter? will they work...?
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Old 01-22-11, 12:22 PM
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BUMP!!!!! i need some more input on this...
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Old 01-22-11, 02:15 PM
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2nd bump this question will also be appling to me..
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Old 02-01-11, 06:59 AM
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Bump!!! So i got a msd tach adapter, part number 8920, do you think that should work with no issues?
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Old 02-01-11, 07:07 AM
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Do this get SC300 Cluster and jump the resistor behind that say R109 just use a wire tie into the resistor from the left to the right.
You can do the same with the SC4 cluster but the RPM won't match the RPM will be off.
So SC3 cluster and just the resistor R109 so tie a wire the one side of the resistor where it solder to the board to the other side and you are done.
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Old 02-01-11, 03:04 PM
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problem is ... my guy doesnt want a sc300... its a cdn spec... so in cdn, all they have are sc400....so i assume getting this tach adapter will work?
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Old 02-01-11, 03:34 PM
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Run a dedicated wire from the ignitor directly to the tach wire behind the cluster to see if that works.
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Old 02-01-11, 03:47 PM
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Originally Posted by quickGS300
Do this get SC300 Cluster and jump the resistor behind that say R109 just use a wire tie into the resistor from the left to the right.
You can do the same with the SC4 cluster but the RPM won't match the RPM will be off.
So SC3 cluster and just the resistor R109 so tie a wire the one side of the resistor where it solder to the board to the other side and you are done.
hey quick..is this why im runnin high rpm goin 60mph 4200rpm? cuz im usin sc4 cluster on my 1jz soarer swap. ive been tryin to see if its something else
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Old 02-01-11, 09:06 PM
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I think it would be easier if you found a cluster from a sc3 and just jump that resistor.
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Old 02-02-11, 03:31 AM
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Originally Posted by PoGikoSc4
hey quick..is this why im runnin high rpm goin 60mph 4200rpm? cuz im usin sc4 cluster on my 1jz soarer swap. ive been tryin to see if its something else

exactly so if you want it to work properly you will to use an sc300 cluster.
right now your tach is off about 1k rpm.

I am thinking finding an sc300 cluster will be the easiest way, but ........
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Old 02-02-11, 05:29 AM
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He could source a cluster from a Soarer. It would retain the kph read and they are digital to boot. I see them on ebay every occasionally.
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Old 02-02-11, 05:31 AM
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Originally Posted by quickGS300
exactly so if you want it to work properly you will to use an sc300 cluster.
right now your tach is off about 1k rpm.

I am thinking finding an sc300 cluster will be the easiest way, but ........
thanks man...
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Old 02-02-11, 08:33 AM
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I ran a Dakota digital tach adaptor on my sc400. I tried the mad but couldn't get it to work right. From what I was told the 300 and 400 clusters are different
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