1.2 head on 1.3 block?

[Dirtydog1]

would it not be more benificial to keep the higher compression?
it seems like you guys know what your talking about though.
ive just bult a 1.6se block with a 1.4se head on, the compression is immense, goes well with carbs on though!

[Novasport]

I think the machining is more to do with piston to valve clearance to prvent the pistons smashing into the valves due to the increased stroke.

[mowgli]

I think the machining is more to do with piston to valve clearance to prvent the pistons smashing into the valves due to the increased stroke.

no, the valve cutouts are pretty much the same on the 1.2 & 1.3. I just couldn't see the point in running a road car on more than 10:1cr & I did 50 odd thousand miles with no troubles, then I got offered a gte engine & couldn't resist sticking it in, so I sold the lump to a bloke for his astra van..

[matt_vaughan]

An issue number would be good to find out for this CCC feature cause I will probably have it. Dad used to buy them all the time, and we have a massive pile of em. I also remember reading about it when flicking through some old CCCs sometime a while ago. I could get it scanned at dad's work for everyone.

[Sloth]

would it not be more benificial to keep the higher compression?
it seems like you guys know what your talking about though.
ive just bult a 1.6se block with a 1.4se head on, the compression is immense, goes well with carbs on though!

is this right? and if so what about the 1.2 head on the 1.6?

[Welsh Dan]

So i use the 1.2st block, 1.3 pistons rods and crank, 1.2 head? Sounds tempting!

Shouldnt that read the 12ST block and pistons, 1.3 crank and rods?

[Dirtydog1]

is this right? and if so what about the 1.2 head on the 1.6?

yes all small block stuff is inter-changeable (i love it)
no idea what would happen if you put 1.2 on 1.6, the compression on mine is mental as it is. lots of people use 14nz block with the 1.3 sr heads for a twin 40 set up.
that 1.3 piston in a 1.2 block set up sounds intresting though!

[Novasport]

I am wondering what a 1.2 crank in a 1.6 would be like, it would be a proper buzzy little engine. Destroked 1600 prob down to about 1400 CC maybe, over square is it called?

[Sloth]

i heard that a 1.2 on a 1.6 gives a 13.7 to 1 cr, now on e85 ethanol, and megasquirt, well.... i reckon it will de stroke it and make it very revvy

[matt_vaughan]

I am wondering what a 1.2 crank in a 1.6 would be like, it would be a proper buzzy little engine. Destroked 1600 prob down to about 1400 CC maybe, over square is it called?

Yer, would rev nicely, but Im sure you'd end up with cam and fueling problems without mucking around. Perhaps a 285 cam might fix things?