1300 & 1400 block differences

[kellee]

Does any one know the physical differences between 1300 and 1400 engine blocks. ie the bore sizes and strokes etc. I have a 1300 block and want to know if i can overbore it to take +60thou 1400 pistons?

[Novasport]

The starter motor is in a different position and the flywheel is larger on a 1.4 iirc. Bore spacing should be the same I think but block height may be different.
You would need to use the 1.4 rods as the little ends are different size to a 1300 but the crank is the same.

[garyc]

I'm sure that is not correct as some 1400's run the smaller flywheel, I thought the block is the same fitting with a different starter motor.

Also I didnt think they make +60 pistons for 1.4's, they don't for 1300's.

[chambers1984]

im sure u can use 1200 pistons in a 1300 and it will change it to a 1400

[kellee]

can the 1300 take the smaller flywheel and run the f10 box then?

[garyc]

it uses the small flywheel and F10 as std. Its 1600's and C14Se that run F13 and larger flywheel.

[kellee]

Cheers for the info. regarding the 1200 pistons in the 1300 block, do you still use the 1300 crank and rods

[kellee]

Also will a c14se head bolt onto the 1300 block. With this combination with the 1300 block, 1200 pistons and standard height 1400 se head, what sort of compression ratio would it be looking at?

[garyc]

12st pistons with 1300 crank an rods. You would probably need to build and measure the cr.

[mowgli]

Cheers for the info. regarding the 1200 pistons in the 1300 block, do you still use the 1300 crank and rods
yes, but you'll be running about 12:1cr, so you might want to get the tops machined a touch.....but it works a treat. with oversize pistons, you can get nearer 1500cc

[kellee]

The engine would be for racing. What sort of CR would be 'safe' to run? Will the 1400 mpi head bolt on the 1300 block?

[mowgli]

please let us know what form of racing it is for, so people have some idea of what is good or not...

also if the racing class allows exotic fuels or additives, then high cr is great, but if its pump fuel only, its not so good...

PM. C612DNM cos if its 8v & small block, he raced it & tuned it

[kellee]

Its a stock rod on oval track. only allowed normal super unleaded. 20 lap races at the most

[Novasport]

If you are wanting to use 1400 internals and a 1.4 MPI head, just use a C14SE and whatever induction method you require. Probably an easier engine to find.

[garyc]

You need a C14SE engine and a carb inlet from a carbed 1400 for stock rods.

[kellee]

I have a 1300 block and have seen the threads on making them 1400 so just wanted some more info. Plus if it gives a lot better CR this would be a bonus

[mowgli]

it only gives massive cr with a 1300 head. the 1400 mpi head will breathe better, but the ports are a different shape (round) so you need a different manifold.

[garyc]

All the stock roders I know are using the C14SE and 1400 carb and inlet combo.