Getting good life out of TTs

300zx.co.uk Club Bulletin Board - getting good life out of TTs: "The turbos on our ZX's can be quite temperamental. I've seen originals on cars with well over 130k miles on and still in perfect working order. On the flip side I've also seen completely worn out examples on cars with less than 60k miles on the clock. So, it is very good that you ask how to best treat them.

Starting with start-up, the Zeds are in safety boost until the engine temperature reaches operating temperatures. During this period boost is limited to about 7psi which means that the turbos won't be hammered to bits. Once operating temp has been achieved the boost increases to about 9psi on a standard TT without boost mods.

During cruise the turbos can take quite a bit of load BUT do not run them at maximum boost for prolonged periods of time.

When ending your trip, it is always adviceable to 'take it easy' on the boost for the last 2-3 miles to allow the turbos to cool down a bit. This is what I do religiously. Also, when parked up, let the engine run for another minute or so. I know it looks a bit naf sitting in your parked car, engine running but not going anywhere, but trust me, your turbos with thank you for it. Alternatively you can buy a device called a Turbo Timer (i.e., from Blitz or HKS). These devices allow you to take out the key from the ignition, arm your alarm and leave the car while the timer keeps the engine running for a preset period of time to cool the turbos down.

As with everything else in life, common sense must prevail. With bits of technology like extremely fast spinning turbo spools it pays to be careful and treat it well."