Whats the point of doing it? make it last longer....?

The theory is more robust longer lasting and alledgedly faster spool up........

 

whats the point? your stock turbos last 60 to 70k miles so if you want your Zed to last another 60k +

 

Along with the oil pump, alternator, cam belt etc, etc,

 

It seems the engine is good for 100,000 plus but its ancilliaries 60k.

 

Chris

The theory is more robust longer lasting and alledgedly faster spool up........

 

whats the point? your stock turbos last 60 to 70k miles so if you want your Zed to last another 60k +

 

Along with the oil pump, alternator, cam belt etc, etc,

 

It seems the engine is good for 100,000 plus but its ancilliaries 60k.

 

Chris

True about 360 bearings, however...

 

most stock tubs last way past 60k, many 120k+ ;)

Alternator is weak point (tend to go around 50k-60k)

No reason to replace oil pump at 60k..I presume you meant water pump as part of 60k service.

Had my Upgraded 360 Roller Barring Tubs fitted when replacing my Knackard Standard Tubbies.. Result was 333BHP at the fly on standard 9Psi Boost with just A Blitz air filter and Mongoose Exhaust & 287BHP in safety boost before the Z warmed up....

 

Now running 1.1Bar Boost with Custom ECU, and still waiting for another "Free Dyno!!" will let you all know what the result will be.

True about 360 bearings, however...

 

most stock tubs last way past 60k, many 120k+ ;)

Alternator is weak point (tend to go around 50k-60k)

No reason to replace oil pump at 60k..I presume you meant water pump as part of 60k service.

 

 

Take the point about some turbo's mate. As an automotive / aerospace designer team leader myself i can see where the zed design team was allowed free reign (engine internals - Hicas system) and where they had to compromise to meet the target price (alternators, water pumps). Although I would agree to say the design life of the turbo's is not the weakest link I cannot think for the life of me why they are not 360 deg as stock as the tech was current at the time and the costs are marginal. I think it does not reflect well on the supplier. Having said that the overall execution of the design is superb but turbo's are always subject to many variables in their lifespan that effect their longevity. Just like whole cars and engines but even more so condition is much more important than age / mileage but generally speaking i would see them as between the alternator (hopelessly under-designed) and the prop shaft bearing in terms of the likely design life. One of my assumptions is that they will give up earlier due to the likelihood of non-stock replacement exhausts being fitted without the stock back-pressure and of overboosting by modern users with access to aftermarket boost controllers. Of course the original designers would not probably have predicted this.

 

I did my oil pump and my turbo's and all the ancilliaries because my upgrade brief was to enjoy 'stone axe' reliability for my high mileage use of the Zed until my new Nissan GTR arrives 2008 in the UK (will probably put 100k miles on her by then).

 

For this age of car we need good actual longevity data as a forum as we love these cars into their old age. We could easily get statisically significant data through web based polls on the life of various items. I suggest for each item (e.g. alternator) earliest known failure. highest still going and mean failure. We could also get some second fit failure rates which would be cool too.

 

Chris

>> We could easily get statisically significant data through web based polls on the life of various items.

 

actually there not many that have owned the car for over a considerable amount of time or know exactly what has been replaced/done in the past by the previous owner(s).

I work on Zeds a lot and I lost count of the number of cars that already had the engine out (for whatever reason) in the past and of which the current owner did know nothing about....not to mention other parts that may have been replaced in the past.

 

So...i think it's hard to create a detailed overview on the expected lifetime of important parts, unless you are 100% sure the item has not been replaced before.

 

-Eric