Hi all

I have found a couple of threads about fitting an 8v head to a 16v block. wether its 1369 or 1242 block it sounds like it would work, but havent seen anyone with it installed & running.

Im gonna get a 16v engine with a broken head/valve issue very cheap from a spares car!

So im thinking as the bolt holes and channels line up, so i can make a 1242 8v and run it spi. Im not looking for any more power than a normal 1242 - so 60bhp...

I know the pistons are the main difference, but i dont think these will cause any problems? Would they lower the compression ratio?

I have a 1997 1108 8v spi, any ideas if this would have a suitable cam pulley? Or would i have to use the crank pulley & sensor etc from the 1108 block?

Im thinking about getting a punto 75 cam too while i'm at it

Your thoughts?

Thanks all

compression ratio will be too low, also if the donor has valve / cam belt issues then the pistons are likely to be marked.

iirc the channels don't all line up properly..

http://cgi.ebay.co.uk/Fiat-Punto-1-...arts_Vehicles_CarParts_SM?hash=item58846930f1

^ £210 and it already has the 'P75' cam.

Thanks arc

I was just tempted as were getting a parts car with 1242 16v block. Very good point about the posible damage to the pistons too.

I found this thread b4

https://www.fiatforum.com/cinquecento-seicento/138005-16v-bottom-end-8v-head-3.html

Smiler121 said:

Thanks anyway but I popped over to Kristian & took a look, from what I can tell from the 8v gasket that I have when lined up on a 1368 block the oil & waterways aren't actually too bad a match - Kristian pointed out that when you know better what you are looking at the differences in holes aren't so bad, probably be to restrict & therefore vary coolant flow rate according to piston location & varied temperature.

Click to expand...

I guess it didnt work - and thats why theres no more info

thanks :slayer:

somewhere i have photos of the 1242 8v and 16v block and head faces. if i can find them, i can add them here for reference if you want.

dont worry dude, its a no go anyway for me if the compression ratios too low.

I can imagine they probs almost line up, but make a mess of oil and water flow etc...

would it be good for a turbo set up? Not that im planning to go down that route, just out of interest

The channels are open whereas the 8v ones are patterned. They will go together with the right gasket.

If yot want to run something different, why not try 16v head on 8v block and go forged pistons with turbo?

Thanks