[Neilnaz]

Hi everyone this is my first technical question so it may sound like a stupid question and it may have been asked before (although I have searched on the forum) but here goes anyway:

I have recently purchased a 1971 911T Targa. I have perused through the receipts for work undertaken and found a series of receipts that suggest that the car had a fairly major engine rebuild following engine damage. The receipts show that the engine was rebuilt to 'S spec' with new pistons and camshaft (etc.). I want to know whether there is an easy way to establish whether this is still the case and whether the engine should be kept adjusted to 'S specfication' i.e. timing (etc.).

This work was undertaken in 1989 and I have no paperwork to suggest that there was any further major work carried out since that time.

How can I easily tell whether the compression was raised and whether the cam is the S spec cam (etc.)? I would like to understand whether it is or not so that when adjustments are required they are made to the right specs/tolerances.

The car goes very well but I wouldn't be able to tell whether the car has 125BHP or 180BHP or anything in between. The car does run Weber carburettors which would have been original to the T model.

Sorry for the long question. Is there an easy way to find out what I have?

Regards, Neil