300ZX (Z32) Performance / Technical Discussions related to Turbo charging, Supercharging, Engine, ECU, exhaust, and etc. performance enhancements and Techical related.

My 300zx, oh yeah, 94

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Old 08-12-2003, 10:35 PM
  #2  
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Smokin? Blue smoke? Burning Oil? Burnt piston rings? Engine rebuild? Do I ask too many questions?
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Old 08-13-2003, 07:54 PM
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Have you had a compression test done? That should be a give away that the rings are gone. As the cylinders won't hold pressure up to spec because of ring blowby. You should be reading approx. 140 or better.
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Old 08-14-2003, 10:53 PM
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What are you talking about Poctum?

Well then Phsyconova, If you don't wanna keep it that's up to you. Just trying to help determine the problem so that you might wanna keep it. I just think that you'll be wasting a lot of money and enjoyment with the car, if you sell it. I know it can be frustrating if you can't find what's wrong. Dumb question, did it smoke before you put the new turbos? If so, why didn't you fix that first? How much boost are you running with the new ones? I'm guessing that maybe excessive boost might be your problem. Too much boost without reinforcing internals could be causing the smoke. Try turning it down if that's the case. There's always reaching out into the Zcommunity near you for help. Maybe a Z mechanic might lend you a hand.
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Old 08-16-2003, 12:45 AM
  #10  
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Well then that all clarifies it. He sold you the car with blown piston rings. You might also want to check your PCV valves. I can almost bet you that they are clogged at this point. If your getting that much oil in the intake system, that's pretty good evidence that he pulled a fast one on you. Did he also do the turbo swap? I bet he was pretty eager to help you with that, if at all. You don't need a new engine, just a rebuild. He probably sold it to you because he didn't want to do the work himself.

http://www.sgpracing.com/

http://www.nopionline.com/index.cfm?...20&vTitle=1994 NISSAN 300ZX Engine Components Piston Rings&vaffid=0

http://www.splparts.com/

http://www.boost-solutions.com/

Here are some online retailers that sell piston rings as well as many other internals. If you plan on keeping the car, hopefully its not your daily driver right now, maybe you could fortify the internals a bit more. There are all sorts of trick parts to get. Of course, you don't have to throw more money into a car you don't want. The minimal you should do though, if you plan on keeping it now, is to rebuild the bottom end with new rings, check all your seals for leakage, and make sure all your hoses are in good shape. Don't need any leaks or clogs. I know it sounds like a lot to do and I won't try to tell you that it isn't, but I think that once you're over this hump you'll enjoy the wickedness that you'll unleash in the sexy form that is the Z.
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Old 08-16-2003, 01:30 AM
  #12  
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Well I hope both of those are your fun car and not your daily driver. The 240 would be a better daily driver. The 300 if you decide to keep it will scorch the 240 in every category. That's what it was built for. If you plan to go all out for the rebuild, check out some of the retailers I mentioned. Some have the stroker kit for the Z. Raising the overall volume to 3.2 Liters will gurantee you Huge power. I'd go with the Jun or Tomei internals, yeah they're more expensive but they're very reliable pieces that I've seen used in others cars that put out crazy Numbers. The lighter the weight of the internals the less mass that gets rotated, the more that frees up to move your wheels. As far as selling either of those try the for sale sections of the popular Nissan forums, including this one.

www.nissanforums.com
www.twinturbo.net
www.300zxclub.com

Then there's always the regular car sites.

www.autotrader.com
www.cars.com
www.autoweb.com

Don't forget to check the approx. value of your car.

http://aolsvc.autotrader.com/hornav/...pl?restype=new
http://aolsvc.kbb.aol.com/kb/ki.dll/...plit_aol&00000

I'm pretty sure there's more sites but this should get you pointed in the right direction I hope.
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Old 08-19-2003, 07:42 PM
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If you want to get a reprogrammed ECU go with JWT. Stillen just sells the JWT ECU with their name on it. Better just to go with the original and save a couple of hundred bucks. Jim Wolf Technology also makes cams and exhausts and other stuff for the Z. Just remember if you change anything that has to do with fuel, air, timing or boost you should check if you'll need to update your ECU. It would be easiest and optimal to just do the ECU with all the upgrades at the same time. That way you only pay once for the upgrade instead of sending it back in for reprogramming every time you need to make a change. Stillen doesn't have too much for the Z that you can't find elsewhere for less. Stillen is a good name but are really expensive and is hardly ever the best choice for parts. They just happen to be very well known and alot of ppl don't know that there are alternatives and for less for that matter. If you need any more help let me know.
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Old 08-22-2003, 08:56 PM
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I just came across this site. I instantly thought about your situation. Since you'll be wanting to sell one of your vehicles. Good luck once again.

http://www.modifiedcartrader.com/
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