Fiat Strada 130TC combustion chamber modification

[mitch strada]

Hi

Can you tell me what you think of this deshrouding job?

I recently found this cylinder head in the boot of a Strada I bought and am unsure about the quality / technical accuracy of the work that's been done on it?

thank you

[Guy Croft]

Mitch,

first you need to take care with your photo size, try to keep well under 400KB as a general rule, that size maybe for a car, but much smaller for parts like this (see my crop & resize) here. A 1.5Mb or thereabouts - as it was - will take ages to upload and be unviewable even on my huge screen (except perhaps for those lucky enough to have broadband, which I do not).

I cannot tell you much about the functionality of the head without physically seeing it - you know that! And maybe trying it out on the flowbench. Sure it's shiny, but that means nothing. A head will carbon up whatever you do to it and smoothing with 80 grit is perfectly adequate as a means to help even burn.
But- I'm not saying there is burn problem though, don't misread me, but that might be a modest justification for spending hours on it compared with the as-cast finish. As for deshrouding, well the 130TC head with its production valves is not shrouded at all; not that I can see much deshrouding in evidence here.

As I said I have no idea how it will be behave; that is down to valve and seat work, read the ongoing articles in GC V/W. If this was executed commercially, unless the firm who did it was a registered charity, all that polishing would have to be accounted for in ‚£ man hours and would, in effect - if charged for - be a complete 'con'. Maybe the seller did it just to make it pretty, he certainly succeeded.


GC

[mitch strada]

Thanks for your reply, i know its near on impossible for you to comment on this without seeing it.

Will keep you posted as i progress.

thank you