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Hey you have lots of options but remember, most of the options mean you will not be able to pass emissions testing (if you have them where you are). Lots of my drift friends are running SR20det swaps in their S13's and S14's. 200-300+ hp at the wheels is very possible with the SR but it does require the right tune. You might need custom engine management depending on your power goals. KA turbos can make tons of power too with a good tune, and they make great torque since they're a 2.4 The RB25 and RB26 are the inline 6's from the Skylines. Those are wild swaps too, less common. In California, you can usually find an SR with trans and uncut harness for under 2500. McKinney Motorsports makes complete swap kits and are known in the Datsun Z community for their RB motor mounts for 240Z and 280Z's. http://www.mckinneymotorsports.com/ Also check out http://zilvia.net/ and http://forums.nicoclub.com/ and search search search. There is a mountain of info between those sites. HybridZ.org has tons of engine specific info on tuning, but not really specific to your S13. Good luck!
If it is truly not a rod knock, I would be looking at the timing chain. Get a timing light on and watch the timing advance. If it isn't stable, there's a good chance the timing chain is loose. With the advance floating around, this could be why you don't have power. Use a long length of hose as a stethoscope to try and isolate the location of the knocking/ticking. A long screwdriver works well for this too. One end goes in your ear and the other can be placed on the part or area. Be careful of the spinning fan!!
The owner's manual often has instructions in the maintenance section. It's worth checking in there if you still have it
Have you checked for spark and is the fuel pressure to spec? Are all the fuses good?
The best place to look if you have it, is your owner's manual. The maintenance section usually has instructions/pictures on how to replace most of the bulbs. Avoid touching the glass of the new bulb because that can destroy a new bulb
The best place to look if you have it, is your owner's manual. The maintenance section usually has instructions with pictures on how to replace most of the bulbs. Avoid touching the glass of the new bulb with your fingers/skin as that will destroy a new bulb.
It really depends on which oil light you are seeing. Is it your maintenance minder light? Oil level? Oil pressure light? It's a good idea to check your owners manual to be sure you're not driving with low oil pressure. If it's the maintenance minder, that is usually manually reset by the shop that changes your oil. Sometimes instructions on resetting the light are in your owner's manual 'maintenance' section. Be sure all of the maintenance is performed for that particular mileage interval before resetting the light
hopefully this article helps you with this as well: http://repairpal.com/OBD-Code-P0420-Toyota
If you are certain the starter is engaging and cranking the engine, you may have cold start problems due to something like one of the coolant temp sensors. Is it just the sound of cranking that is making you worry about the timing belt? You can do a compression test if you think the belt broke, and you have been cranking the engine since then. How many miles are on the car / current timing belt? Have any warning lights been on while you've been driving the car lately? matte is right though, many modern cars need a minimum voltage to energize the engine controls. The engine may crank but not start
Can you see if anything is stuck under the truck? What type of rubbing sound do you hear? metallic by any chance? Does it change depending on your speed? Does it sound like a whining noise at all? You may want to have a good shop look it over if you can't isolate the noise