bco6

First thanks for the advice guys! A loose spark plug would be great....i took them off and cleaned them on a wire wheel and changed the seal ring then ran the car around my drive way and idled for a few minutes and no oil came out but the plug was covered with oil....I am back at school in upstate NY now, the wideband is in....in PA. I will be back in PA on thursday to run the car down to get dry then wet compression test. how much is this going to cost? I don't want to get scammed..i heard in the 100 dollar range. sound reasonable? Thanks again for the advice! it is saving me time and money! Oh and ......I had 5 days and only one test last week, so yes...lots of free time.......12 credit minimun is great!

I did some more research and more bad news....my rings in cylinder 4 and 5 are probably gone...based upon the oil coming through around the spark plugs

last week was finals week so i had some free time.. I read maximum boost and did a ton of research. and found my vacuum controlled manual boost controller tucked under the master vac. now which direction turns down the boost? screw it in or screw it out?

Here is a pic of my 240 with MSA spacers, eibach lowering springs, and 17X7 with 225/45/17 they work great, no rubbing!

Thanks Wigenout! I went with a PLX wideband and bosh o2 sensor. should be coming soon.. I am currently trying to figure out this boost problem of mine then i will definitly get a intercooler over the winter. Where can i get a better flowing down pipe, should i install that when i install the o2 sensor?

can any one tell me what type of injectors they are? or do i have to take them off and compare photos with the injector thread? Secondly i ordered a wideband and i will need to install the o2 sensor, can I pull out the existing o2 sensor and put in the new one? or will that mess up the ecu and cause the car not to run?

Also here some pics of the car

Just got the car picked up from the electricial shop. here are some pictures of the engine......... I found a bottle cap jerry-rigged under the j tube......oh boy

thanks jc052685! Ordered Wideband, we will see how the AFR is. will post results soon

Thanks for the advice! I am in the process of buying a wideband to see where in am at. An intercooler is in the works.

Hey Hybrid Z, I am a newbe to the 280zx turbo motor. I recently Purchased a 72 240z with an 83 zx turbo engine. I have spent the last few weeks searching threads. The car was originally set up to race so none of the lights were hooked up. After hooking up all the lights and driving on the road I noticed that it was fast as hell! , but the boost guage was showing 15 psi. I was warned at a local garage that this might be dangerous. It has all stock Turbo equipment, no intercooler, a very loud blowoff valve and to my knowledge stock injectors. Should i bring the boost down, and what is the best way to do so. My performance goals is 250 HP with reliability. I studied the Ultimate Turbo guide by Drax but am wondering where to start. I am not looking for a complete rebuild, just to modify the strong stock engine. Just purchased a 60mm TB, whats next.....intercooler? new ECU?

Great pics! Does anyone know if I could run a 60mm TB in stock Turbo intake system, or do i need modifications? Also is it safe to have a stock 83 zxt motor run at 15 psi?