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You need a 24 inch machinists straight edge and set of feeler gauges. http://www.sjdiscounttools.com/measurement-tools-specialty-measurement-straight-edge.html Make sure the feeler gauges go down to 0.0015". Snap-on.com has a nice set and they don't charge shipping...

No, Toyota added it to increase production costs and lower their profit margin! :biglaugh: Of course it is necessary, it protects the turbo when you close the throttle during boost!

What the &@#% is the point of substituting "n e" for the word "any"... LOL!! You don't really want to start messing around with the connection between Toyota head units and their amps. There are quite a few variations of connectors, but they are all in the end using the same basic set of...

Use Molex MX150L sealed connectors under the hood. You can get them at mouser ( http://www.mouser.com/catalog/625/1086.pdf ). A little pricey, but well worth it. You will also need a good ratcheting crimp tool like these ones. http://stores.ebay.com/EE-INDUSTRIES For splicing I like to...

Measure it. Two things help. One is that the cam journals become very loose once the mystery babbit goo wears away (Toyota wear limit is 5 mils!). Two is that the cams are shorter than the deck surface and so the warp can be less than measured at the deck. I had 4 mil deck warp and less than...

The scaling can be as easy as just a single potentiometer. It depends on the impedance of the stock gauge. If it is high like a voltmeter, which would seem the most likely, then a 10k or 100k potentiometer with the wiper contact going to the gauge, and the pot winding going from the sensor to...

Cool idea. The GM sensor appears pretty linear. Do you know if the Toyota sensor is linear too? I suppose if it is then 2.5V input should read about 2psi on the stock gauge.

This thread confuses me. 85mm is 1mm oversize, which is 0.040". I thought that was pretty typical and okay.

It is possible that the thermostat housing has come loose from the head. There are two nuts and one bolt that hold it in place. You will need to move a few things to get access to them (like the CPS and PS reservoir).

Did you measure the clearances of the journals? Its pretty weird that the toyota spec is .005", half of the valve clearance spec and huge for such a small journal! I think Toyota knew from the start that they had a problem here.

Thanks Grim. I have read that post from Reg. There has also been some discussion on the matter recently on the supras.com mailing list. I also saw mention of it on the toysport web site, their advice was to polish the stuff off. The problem is that the soft coating has worn off of the cam...

Okay here are a few pics.

Its a noise filter (capacitor). Stops alternator whine in your stereo.

Whatever it is, it is very soft. A fingernail will make a dent in it. I've never seen anything like it on other cars.

The 7M cam journals are coated with a soft babbit like mystery material. My intake cam looks perfect, with no visible wear in the head and the babbit material is fully intact. The exhaust is a different story. The first 2 journals from the front (where the cam oil feed is located) look...

I think it has some hysteresis to improve the drivability. Without it you would get a nasty surge if you happened to be coasting along near 1600 rpm with your foot off the gas. It cuts in a little above idle to prevent stalling.

Shoot! I was hoping to finally see the assembler code. I pulled apart a supermonitor to try and see if I could extract the code, but it was using an unknown processor with markings D 151801-5300. I believe this is the same processsor used for the ECU. D probably stands for Denso. I couldn't...

JJ, That fuel cut is for emissions. It shuts off the fuel when the engine is revving down with the throttle plate closed. Look at the test carefully, with the IDL contact forced closed, the fuel cut occurs above 1600 rpm. You don't notice it when you are driving, but if you are slowing down...

The reason for the confusion is that that page shows all 5 sensors. Look at the "MODEL" column and you will figure it out. It breaks all the rules of the usual Toyota EPC. Also the sensor numbering (No. 1, No. 2, etc.) is not consistent with the TSRM adding to the confusion.

Fuel injectors have internal filters. Its standard procedure to replace them when injectors are cleaned/flow tested.