OzGemini.com

Another thing to consider is that when comparing say 13's and 18's with the exact same rim width, offset, and overall rolling diameter, the tyres on the 18's will have a sqare shoulder being low profile, while the 13's will be more rounded. This means that the edges of the tyres on the 18's will be ...

You could try searching the net to find what the stock combusion chamber size is supposed to be. You could also look through the spark plug hole at the top of the piston to get an idea of how big the dish is, and then assume a typical dish size. This would give you ballpark figures to do a calc with.

Bosch make a whole range of wide band oxy sensors. Bosch LSM sensors are about $300. Bosch LSU sensors are only about $100. I run one of these in my tech edge controller, it seems ok. All microtechs since the DIGI series are designed to run a narrow band sensor to give an a/f ratio indication, but a...

I don't think its up to us to work out if he needs one, the bloke has said he's looking at getting one, so I assume he wants to tune his car with it, or maybe his model microtech can run closed loop and has the feature to use a WB sensor. I don't know. Either way, the question was is there another s...

if its to run through your microtech, you should ask microtech if other sensors are compatible. Unless they tell you, i'd be concerned other sensors wouln'd be accurate, as the microtech is probably tuned to suit the output of that particular sensor.

not necesarily, you said it runs great at 6, it may be that 6deg is the best for your engine. I wouldn't of thought it can handle more, but If its good at 6, leave it there and enjoy. I wouldn't have thought you'd be able to feel any performance difference between 4, 6 or 8, but if its running great...

8 or 10 deg will work better than 2.5 or 6. 2.5 sounds low, its probably for emissions reasons. I used to use the theory of keep advancing it unitl you can hear it ping, and then back it off a bit, but sometimes it will still ping slightly and you won't be able to hear it. So best to play it safe an...

eliminate 1 thing at a time, get a fuel pressure gauge and check if you have engouh fuel pressure when its carrying on. If not, then you're pump might be shagged. If you do have enough pressure, then its something else, carby or maybe ignition system.

just a guess as I don't know the turbo specs, but it will work ok on a 1600, probably be a bit laggy as the turbine and exhaust housing look fairly big. If you were to put it on a bigger engine, like a G200, then the lag would be less noticable. Also if you modded your engine to improve air flow, li...

Although having the oil cooler between the radiator and engine isn't optimal, its better that nothing. The water in the radiator will be about 90deg, which means the air flowing over it will get to about 60deg (just a guess), so this air will be available to cool the oil cooler. Since the engine oil...

yeah i've heard the same thing about the steel section being from commercial vehicles, but I haven't seen one before. I have seen a box in a G200 rodeo that was all aluminium, and I assume it was the standard box. I've also heard that the commercial boxes were only fine spline output shafts, as thes...

if the piazza and rodeo injectors are both low impedance, then yes your ECU will work with either. I can't remember 100%, but I think the late model rodeo red denso injectors (round TB) are high impedance. 13.something ohms. Maybe the earlier model pinkish injectors are low impedance. Not sure.

If you want to do some reading, go to www.turbogemini.com and click on the button MY CARS DEVELOPMENT and it details different engine combos and boost levels on cast and forged pistons. I've used aftermarket cast pistons with mixed success. They can handle over 20psi of boost, but if you have any hi...

A welded diff or some sort of locker centre (mini spool) is best for burnouts. If going LSD, It will have to be either a bigger LSD diff like from a factory big 6cyl or V8 vehicle, a clutch pack type LSD centre (as opposed to a cone type) or a VERY tight rebuilt 6cyl early commodore cone type LSD. A...

Somethings wrong with the carby. I would normally say try this or that, but it sounds like you'd be best taking it to a mechanic to pull the carby apart for a clean, or swap the carby over with a second hand one. Keep in mind, not trying to put down your mechanical ability, but it would probably be ...