3SGTE Harmonic Balancer (Trigger wheel installation)

[Ken_T]

+1 to what chuck said.

I really don't see the point of swapping from the factory sensor to a crank mounted sensor. Yeah, you get more accurate timing but it doesn't seem like your car makes enough power or revs high enough for timing drift to be a major problem.

Why does your tuner recommend you swap? 24 teeth at cam is the exact same as 12 teeth on crank. Why does tuner recommend more teeth for better resolution yet haltech recommend against it? I would have gone elsewhere as soon as he suggested that unless he had a really valid reason for doing so. ECU's these days even have compensation for timing drift anyway so it's not too much of an issue. Not the 100% solution but it'll do for most people.

Also: How to use DIYAutotune.Com's crank triggers

[Punknoodle]

The reason I was listening to what he told me was one, how do I know any better? That's why I'm asking the question here and asking Haltech directly, and two, the advice came from the manager of a very well known performance shop, who are official Haltech tuners. There was an ST185 in there at the time, and he said they had done the same thing to it...

[thechuckster]

I'd be asking them to explain their advice in terms other than those found in Haltech's marketing propaganda speaking points - I cannot imagine why they'd forego a 60-2 wheel for a 12-1 wheel. Even a step up to Ford-derived EDIS 32-1 tooth wheel would be an improvement in rpm resolution.

I think you're just running into the age-old problem of a dyno shop being aligned with one ECU supplier and only familiar with particular setup of ECU, software and sensors.

Fwiw, I found this just by searching for 'ECU trigger wheel'. It's for a Haltech-driven BMW.

It does put a lie to the notion that a Haltech can't use a high-count trigger wheel.

[Punknoodle]

Thanks for the reply, they didn't say it wouldn't work, just that it wouldn't work well...

[thechuckster]

which is probably their way of saying: it might work, but we only know how to do this other setup

[Punknoodle]

Fair call, thanks for the advice. Maybe I should ask a couple of other tuners about it. Anyone have any suggestions on good tuners in the Brisbane area? I've heard there is a guy called Matt down in the gold coast who is very good?

[Ken_T]

Matt Spry?

Is 2jz 12 tooth crank wheel? They make 800hp on stock triggers.
Don't see why you need more resolution for a 3s. I don't know how much power you're planning to make but it's probably nowhere near 800hp.

Ask for valid reason or find another tuner.

[thechuckster]

Matt Spry has a good reputation.

[wagonist]

You could install the crank trigger from a Caldina 3S-GTE. They all have COP.
But you'll need the oil pump assembly (as it has a cutout & mounting for the sensor), plus the sensor itself.

This should fit to the crank pulley itself, and would have the added benefit of relocating the oil filter to beside the sump.

Go for a search through my ride thread, there should be some comparison pics between the ST205 & ST215 stuff when I changed my block.

[wilbo666]

I don't understand what your tuner is talking about...? As the others have said,

I'd expect the 3S dizzy to be 24 teeth for crank position with two separate TDC (top dead center) indication teeth so it can run sequential injection and ignition. (I'm not personally familiar but this is what I would expect).

The above described dizzy setup is effectively the same as non VVTi 1JZ for example that has a 12 tooth crank angle sensor and two separate cam position sensors (FYI only one cam position sensor is really needed...).

Also if you don't use the 'dizzy' section of the 3S dizzy it's effectively the same as the Camshaft Position Sensor used on 7MGTE which is DLI (Distributor Less Ignition).

I'll be honest I'm not personally familiar with 3S however so I may be wrong



This from autoshop101.com is also worth a read...
http://www.autoshop101.com/forms/h23.pdf

Cheers
Wilbo

[thechuckster]

Wilbo: the CAS is as you describe.

[assassin10000]

... you might even consider using a 3rd gen or 4th gen (beams red/grey top) oil pump, front section, upper/lower oil pans, etc. IIRC they should be the stock 36-2 trigger wheel on the crank timing belt pulley and have the mounting provisions for a stock sensor. I'm not 100% sure on exactly what parts are necessary to run this on a 2nd gen, or if modifications to the block would need to be made.

Just a thought.

Andrew