1.4sr-possible to bore???

[vauxnov]

hey

i have a 1.4sr but need more. would anyone know whether it is possible to bore it 2 a 1.6 without modding bottom end??

also would a mk2 astra 1.6 carbed engine drop straight in on the same mounts?? what about gear boxes?

[Philsutton]

a 1.6 cav engine will be a direct straight swap from your 1.4sr. Just use your nova mounts ect..If your going to bore a block out then your going to modify the bottom as you will need bigger pistons ect..

[vauxnov]

will putting a cav engine worth putting in or would it be best to tune up the 1.4? e.g ports and polishing. twin weber??
will i need a different gearbox for the cav engine??

[burgo]

just keep ya 1.4 head but get 1.6 valves in it and bolt a 1.6 block to it

[Snowface]

to fit 1.6 vavles you will need to machince the vavle seats out because they are bigger.

bill blydenstein is the man to go to for cylinder heads.

or i heard cylinder head developments are good too.

[novaexplod]

or if u live in lancashire area Road and Rally is a decent place for this kinda work and block bore outs.

[burgo]

[quote="Snowface"]to fit 1.6 vavles you will need to machince the vavle seats out because they are bigger.quote]

i know this, shouldnt cost to much either as im sure the standard seats are big enough

[nova_rally]

Shouldnt take long to redo the valve seats on a vertical Milling Machine. How much are the larger valves new anyhow? Fancy having a mess about with a 1.2 head now!

Alan

[burgo]

its probably cheaper buying a 1.6 head from a scrapy and using the valves from that, unless you really want new valves

[Snowface]

31mm sri exhaust valves i got 1 for ?17 new, not Gm though.