Hi Harry the exhaust is the same, thats the dorian timer you can see in the photo.

I think I may have helped the over heating by sealing off the whole front end and sealing the ic to the radiator now all the air has to go through radiator and ic(when I turn on the thermo fan you can place a peice of paper near the ic and it gets sucked on). It didn't get past 85 degrees although on low boost. I have taken off the oil cooler didn't like the hose clamps and the fact that it was a transmision cooler I will replace that soon. They have increased the hot laps from 3 to 4 plus the warm up and cool down, so 4 min 40 of flat out driving.

I too have had the turbo come off (twice) lost all your lock nuts and distroyed the gasket. I have now got some locking tabs from nissan (an oem part) if that fails a small tig weld tack on the nut and the manifold will stop them coming undone.

I am going to pull the diff apart before the next run because it is making a howling noise especially off throttle. I also have a heavy vibrition from the front left under light braking I have skimed the rotors re packed the bearings but have noticed alot oil around the damper so I have to pull that out aswell to check it out.

I have been speaking to some people about the same issues on the rb's a drain from the catch sounds like it might be the trick. Rb's would have to be the sweetest sounding engine on full song. There was a 260z with a rb25 in it as well as a couple of gtrs, what a noise.

I love this car even though it requires more maintance than RAAF jet fighter, my wife she doesn't have the same affection for it.

I'll pm you my address the lap top would be great as they sell avgas at the track I might be tempted one day to up it.