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but how to reduce the compression ratio? I took my self the compresio with hot engine.

Hello, I've completly rebuilt my engine with wiseco 87.5mm forged piston. My compression are now 9.5:1 As I will change the turbo for big Greddy or HKS, I've been told i need to lower the compression ratio. Is that right? Why? And how can I do this? Thank you

Bonjour à tous, I'm the only frenchi in here??? French sucks about car and specially modified cars! All I buy come from uk or USA. You will find nothing in france or for 10 times the price!!! BTW, this web site sucks, you have to pay to access the forum!!! and there is only old people on it... Best is to go here: http://www.japancar.fr/forum/index.php It's for all jaanese car including 300zx. But you must know that in France there is maybe 15 owners of Z on the web! Where are you moving?

Is it this: http://www.courtesyparts.com/z32/oe_pcv.html ?

So just hose and PCV valve can made my car smoking so much??

Hoses and valve of the PCV?

I've found that my balance pipe is full of oil. As I already told you my car is smking a lot. What is my problem? PCV valve? Turbos?

in France, it's 3.1L without filter and 3.5L while changing the filter.

Did you check/replace the PCV valves ? No I didn't. Do you have any oil in the intake pipes going to/from the intercoolers ? No, it' completly dry Did you also replace the valve stem seals when you did the rebuilt ? Yes I did How much oil have you put in the engine ? I've change the oil 1500 kms ago and I've put 3.5 liter with the filter changed.

Up

OK, so my compression are ok. 9.5:A1 on each cylinder, I did a good job with my engine rebuilt :D But t take compression, I hve remove the balance pipe and it's looks like my problem come from here as it was full of oil and calamine. Where thi oil can come from? EGR syteme, no?

I had it bored. But why sometimes on side and sometimes another side is smoking??

I'm lost with this car. My exhaust is seperated in two line. I have remove the H pipe. Before it was only the driver side that was smoking a lot and I'm just back from 500 kms and the driver side was not moking at all but the other side was smoking a lot !!! i really don't understand!

Oil gasket looks good. I will take compression this saturday

Hello, you can I know if my turbo are dead? Since I'e rebuilt my engine (forged piston and rod), my engine is making more smoke than my tyres :headvswal I've to seperate exhaust line and the one on driver (europeen) is making the smoke. My car is still running really great and powerfull. My admission is dry (o trace of oil). What can it be please?

I'e also one, i will try it tomorrow. I've took the weight of my 2+2 300zx with half fuel and nobody inside, it gave just 1600 kg on the balance. Also, does it give the power in HP or Kw??

So finally, I did it :D There were a very bad connection between the PTU and the wire o that's why sometimes code , sometimes fire, sometimes nothing) and also the main and scary problem is that I found a very small (0.3" long) screw on the timing belt cover... This has damaged the timing and made it jump off just for one theeth. I'm relly luky because think to the bad connetcion, it's look like nothing is damaged. Thank to all of you.

still in trouble and now I'm having a code21 and not fire at all... Checked the PTU as per Nisan procedure and also open it a per Andy procedure and it looks good. Also, I've a spare PTU and with each one, no fire at all.

How a vaccum leak can cause this problem? Because since somes days, before the car stopped, I was having only -0.3b at idle.

I did and there is a very small fire. I spent 3 hours this morning testing the car, plug and other... And the car still don't want to start :nono:

Two days ago, my car stop running while arriving at a stop. Since that no way to start again the car. I've checked the code error and I'm with a code 55. I'e checked the spark plugs and they were wet o I changed them but that mean i've fuel arriving to them. I've checked all connections with coilpack, all looks good. I've tryed a new PTU but still don't want to start. My mechanic said that the ignition is not enought powerfull. What can I do now? Thank you.

please if you know answers.

i did nothing an the car is running better now... I think I will buy the ptu...

Can it be the PTU that is running badly? Because actually the car is running good again...

Since this morning, my car is runing badly. I checked with consult and I have an error 21. Where does I have to look for?