Toyota V12 into 105

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Just out of curiosity, IF you were to have someone do the service on it, say, change the spark plugs, and oil change, how much more do you think it may cost over the stock, IF you could find a shop to do it. You can give the difference between V8 cost and V12 cost as a percentage, since we'd be trying with all the fingers on both hands to figure out the exchange rate of your dollar and the USD over here. ;-)
In order to replace the plugs you need to remove all the pipes you see in the photos including the intake manifolds. Sounds bad but you do it every 20k miles or so if you use proper plugs and unleaded fuel. Oil and filters takes an hour so you do it yourself. No factory guarantee on this baby! Sent from my iPad using IH8MUD

R2m, we don't have dollars but Mandelas, now that he is no longer with us, RIP, we have Zumas and they are worth s***.
 
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Hi Guys

Can anybody help with this? On each bank, in the inlet manifold, the 6 cylinders are split 3-3 with a butterfly valve. What is it for? Can I just lock it in the open position?

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That is the ACIS or Acoustic Control Induction System butterfly. It's there to broaden the torque band by effectively changing the length of the intake tract to two tuned lengths.

You'll need an ECU to control it to take advantage of it. Or you can simply lock it in one position. Closing it should optimize low rpm torque while opening will optimize high rpm power.
 
Guys

I'm busy fitting a V12 into a 100GX Cruiser. It is being fitted with a 6 speed auto box and two T3/T4 turbos. We'll keep boost to .4. Has anybody here fitted a V12 into a 100 or and 80 series? Does anybody have some experience with the V12's and / or putting turbo's on one?

Dion

I would love to get v12♡..is it patrol. ?


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<. . . jaw drop . . .>
 
Hi Guys

We need some help, everything worked fine but since we took it to the dyno it keeps on blowing the regulator on the alternator. Volts are fine at just below 14 and as soon as you increase the revs the volts will go up to about 16 or 17 and the it falls to about 9 and the alternator light comes on.

Any ideas?
 
Hi Guys

We need some help, everything worked fine but since we took it to the dyno it keeps on blowing the regulator on the alternator. Volts are fine at just below 14 and as soon as you increase the revs the volts will go up to about 16 or 17 and the it falls to about 9 and the alternator light comes on.

Any ideas?
Generally, toyota alternators run a "sense" wire which monitors the output of the regulator at the battery terminals or at the fuse box. This is done to overcome cable resistance(voltage drop), so the output of the alt may be 14.4 at the alt terminal and 14 at the battery etc.. If the sense wire is open circuit the regulator goes to 16+ volts, I don't recall it dropping after, but check the sense wire is powered.
The sense wire can be powered directly from the output terminal, making it into an internally sensed unit, or powered via a 7.5 amp fuse from your main battery terminal or fuse box. Your 105 fuse box should have the wiring in place, check the fuse. ALT-S, either in main fuse box for later models or small box with fusible links for earlier models.
 
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Thx 100 TD, we had a long weekend, will check if there is power on the "sense" wire tomorrow. IIRC it is the centre one of the 3 on the plug.
 
I'm getting my baby back today, took more than a year for the shop to complete the conversion. Will post photos next week.
 
Sounds great. Looking forward to see more pics, and to hear how you experience driving it (and others seeing/hearing it).
 
Had the car on the dyno again. 275kw and 700nm on the wheels. It pulls like a steam train! Boost is 6psi at 1500m altitude.



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