BIGBLOCKR31COUPE

On his 'Parts & Info' page

www.meggala.com should have them.

4AGZEs use forged pistons from the factory also. The old loose pistons are long gone. Piston technology has advanced alot since those days and a car with forged pistons should be nice and smooth these days as long as they are installed with the right tollerances. Geoff.

Use the old screwdriver trick. Hold a screwdriver against the injectors one at a time and hold the handle against your ear. You should hear the injectors clicking as you crank the engine.

I had no trouble with mine and I haven't heard of any problems. Because of the slight interference fit it is easier to remove the transmission from the car, fit it to the engine and install the complete engine-transmission together as a unit. Trying to lower the engine into the engine bay and then bolt it up is very difficult. Just remember to drain your gearbox before you remove it. Geoff.

Yes it will fit straight in.

Thanks Dsturbd. That is good news. We should be able to do the conversion pretty quickly. Geoff.

Thanks Dsturbed

Yeah, very nice torque curve. VERY nice!

I remember when I built my RB30det that the pistons came right to the top of the cylinder bore. If you decked the block they would then come too high.

On 'Rowans Cobra Site' he claims to have put forged Wiseco pistons into his RB30det giving him 8.5:1 CR. You may want to ask him what the story is. This is a link to his page http://home.iprimus.com.au/cobra30/twincam.htm Geoff.

What CR are you trying to achieve Joel?

The reason I am asking is that I am about to help a friend put an ECCS engine into his dead NICS powered R31 coupe. He is trying to keep the process as simple and cheap as possible. We haven't gone to purchase an engine yet and he is worried that he may be up for a small fortune to have the wiring done. If the ecu uses the same kind of plugs as his NICS ecu it will be very easy for us to separate the engine loom from the others ourselves and only replace the one simple loom (the NICS ecu has 4 separate looms with their own plugs) leaving the other looms connected. If the pinouts are like the R32 pinouts we will need outside help. So it would help if anyone knows whether the R31 ECCS pinouts are the same style as the NICS ones. Thanks, Geoff.

Thanks Dsturbd. Is it the ECCS or NICS one? or are they the same? Geoff.

Thanks rsx84. Luv the R30. Good to have something unique. Geoff.

I have already got the R32 pinout diagram and R31 NICS but not the R31 ECCS. This is what I need. Thanks anyway rsx84. Geoff.

That is what I am trying to find out. I want to know whether it is like the R31 NICS, R32 ECCS or totally unique.

Thanks SKY031 but no it's not. I have the NICS one and the R32 ECCS one, but need the R31 ECCS one. Thanks anyway, Geoff.

I put a RB25 BB turbo on my old NICS RB20 about 5 years ago using the RB20 oil and water lines. I just bored out the banjo fittings until they fitted. I used this turbo for over a year and never had a smoke problem. I ran 13psi and found that the turbo spooled up quickly and the car produced power all the way to the red line. It was a nice improvement. Geoff.

Anyone else have any idea?

Normal. Yes. It is coming from your PCV valve. The harder you drive the more oil. An oil catch can will prevent this.

You should also take a look at what oil you are using.

Thanks Kinks but it doesn't actually refer to the red top ECCS ECU. The site shows R32 silver top pinouts only.

Roller bearing turbos have larger banjo fittings than earlier non roller bearing turbos. The core on the roller bearing turbo is also larger. R32s initially came with non roller bearing turbos.

This rubber pipe shouldn't close over at those boost levels but installing a nice smooth metal pipe will improve flow. One thing to note is that the original pipe has a section in front of the turbos inlet designed to reduce turbulance in the pipe caused by the turbo. Not having this in place can cause minor airflow meter inaccuracy but will not do any damage.