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^^^ I hope that's the case. Just because the HG's been changed doesn't mean it seated and sealed properly or wasn't defective. But Jaguar's right, get the system pressure tested and eliminate the guess work.

How about an award for all those Supra Saviors out there... you know, the guys who buy a COMPLETE pile and spend every penny they've got just to get the damned thing back to stock (if not beyond) condition.

Sorry just saw this... MAFT Pro's has timing monitoring for ages... it's timing control they just added and YES you can rather simply monitor timing via a serial port, it's just a pulsed signal.

Most of them do. There are a couple places where you can order OEM parts for less than MSRP. I just finished replacing all but the last four items on your list.... adds up fast.

Also, the MAFT Pro has wideband support, but is not a wideband controller. By itself the MAFT Pro won't accurately monitor your A/F. The upshot is that with the MAFT Pro you can ditch the N/A AFM for something less restrictive and it'll cover your needs if you decide to add a turbo down the road.

So glad to amuse... I'd been doubting the CAN thing and yes, I know our cars don't have either ODB variant. There are plenty of things you could monitor (including: timing, throttle position, knock and the o2 sensor (although a narrowband o2 sensor's a bad source of data)) using a simple...

I'm not 100% certain about the system using a CAN bus. A reliable source of info when it comes to Toyota electronics insists that it is. Here's some reading material for you: Pinout: http://www.cygnusx1.net/Supra/TechTips/engine_error_codes.aspx ECU Pinout...

He's looking for a manual tranny.

The pinout is printed under the cover of the diag port. As for what values and ranges you should expect from each line I cannot help. I believe our diag port is CAN based though. I'm sorry I can't offer more info...I don't know of anyone who's done what you're looking to do.

Specifically what info are you looking to get out of it? More than just error codes I presume?

The hose length shouldn't affect anything. It might help oil condense out of the vapour that would normally end up in the intake, but I doubt it'd be enough to notice.

The vacuum helps the rings seal a bit better at high RPM. I believe it also helps oil seals (provided they're not so old that they're now solid plastic).

If the results aren't what you're hoping for try adding a comparator with a potentiometer to the equation.

Much higher displacement. I know it's not double that of ours, but aren't their exhaust systems also shorter? Hence less cooling of exhaust gases in transit. I'm not convinced that 2.5" is the biggest you could go on an N/A before loosing performance. Our stock resonators and mufflers are...

Sorry, I always thought TSRM stood for Toyota Service & Repair Manual. I don't work on it often, so if something was available online it'd be preferred.

That really depends on the smell. If too much pressure is leaking into the crankcase it can blow out the dipstick and throw oil over the exhaust manifold... We need to know more specifically what it smelled like.

Not much room to route it anywhere else.

nope, but if you click on that number it will give you the part number: 12263-42010

Usually you'll see one of two things. Either the oil will look muddy, not just dark and transparent... It may also be alot thicker than it should be (BHG milkshake, real fun to clean out). Or you'll find after it's already seperated in which case it's more than obvious.

Thanks, I'll check it out. My dad's got just under 500,000miles on his '93 and it could use a little TLC. So I've decided that whenever I'm over at his place I'm going to do a little work on it here and there, perhaps it'll see 1 million then.