Why do engines fail ?
Discussion
In these forums I've read a lot about S6 engines failing and consequently needing rebuilds. I would be interested to know which components tend to fail first and how this relates to TVR's downgrading of the original design. I remember in the early days that 'finger followers' were a particular problem but my dealer claimed this was remedied.
In the event of a catastrophe and if I had my 3.6 engine rebuilt to the original blueprint spec what level of reliability improvements could be expected and would this allow a higher rev limit ? Do the torque/power curves for the original differ much from TVR's version ?
As I understand it the original engine was designed as a 3.6 and the 4.0 is essentially a bore/stroke development of this with most components being per 3.6. Does this mean that the 4.0 will always be less reliable than the 3.6 (which it seems to be) or was there an extensive overhaul of the engineering design in the latter days to be seen in the last 4.0 cars ?
In the event of a catastrophe and if I had my 3.6 engine rebuilt to the original blueprint spec what level of reliability improvements could be expected and would this allow a higher rev limit ? Do the torque/power curves for the original differ much from TVR's version ?
As I understand it the original engine was designed as a 3.6 and the 4.0 is essentially a bore/stroke development of this with most components being per 3.6. Does this mean that the 4.0 will always be less reliable than the 3.6 (which it seems to be) or was there an extensive overhaul of the engineering design in the latter days to be seen in the last 4.0 cars ?
FOG said:
...if I had my 3.6 engine rebuilt to the original blueprint spec what level of reliability improvements could be expected and would this allow a higher rev limit ?
This would not be possible without a new head casting - i.e. not possible.FOG said:
As I understand it the original engine was designed as a 3.6 and the 4.0 is essentially a bore/stroke development of this with most components being per 3.6. Does this mean that the 4.0 will always be less reliable than the 3.6 (which it seems to be)
Originally designed as a 3.0 and 3.6 and yes the 4.0 has higher forces to cope with so will be less reliable. By how much less reliable is anybody's guess and the variance in build and component quality is far more important than cc or RR spec, IMHO.In short: you have a great car just enjoy driving it. J
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