how to find out what size pistion

[hotrodder13]

i need to find out what size my pistions are already because the forged type only got up to +0.40 and since mine has already had a rebore it might not be suitable

cheers tom

[MarkyB]

Either take the head off, or invest in a boroscope to see what's stamped on the piston tops.

http://cgi.ebay.co.uk/FLEXIBLE-SNAKE-EN ... 2eb11c375a

The amount of muck on your pistons may vary.


If father Christmas is listening I'd like one of these but can't really justify it .

[bmcecosse]

You need to measure the bores - but I'm sure forged pistons are available in ALL sizes - the price is of course high! Of course - what you also need is a low static compression ratio - this can be achieved by either machining the crown of the piston - or by opening up the combustion chamber (hopefully aiding flow at the same time) or a combo of the two. Has your engine builder any experience of building Turbo A series engines ?

[hotrodder13]

turbo pistions are only up to +0.40 but he says he might be able to get bigger but again more expensive,

he supplies jono and esm with all there 1360cc not sure about a engine for supercharger, jono seemed happed with the work hes dun