Crankshaft swap for NC23

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900triple
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Crankshaft swap for NC23

Post by 900triple » Fri Jun 30, 2017 11:03 am

The big end on my NC23K has gone - I have a spare CB1 engine which appears to be in good condition - can I swap over the crank assembly/pistons/barrel for the CB1 straight into the original NC23 engine?

Also - any ideas where to get a full engine gasket set for the engine?

Ta

Bowches
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Re: Crankshaft swap for NC23

Post by Bowches » Fri Jun 30, 2017 10:05 pm

I think there are some similarities with the NC23 and the CB1....The CB1 also known as the NC27.

iF YOU Look at a NC27 engine, it kinda looks like the NC23 engine as well.....I'm not sure really

CB1pod70
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Re: Crankshaft swap for NC23

Post by CB1pod70 » Sun Jul 02, 2017 4:33 pm

The CB1 engine is basically the same as the NC23 from the cylinder head down. To do the swap, the easiest is to fit the NC23 head & cams including the 2 water outlets, water pump & oil cooler (behind the oil filter) and ignition pick ups to The CB1 engine this will get you going again. You may find the gear ratios are a bit different but actually more suited to road riding also you might want to swap the clutch baskets as the nc23 unit is lighter

I think that's everything I can remember from swapping parts between the 2 bikes

CB1pod70
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Re: Crankshaft swap for NC23

Post by CB1pod70 » Sun Jul 02, 2017 4:37 pm

GF racing, CMSNL or David Silver spares can sort out the gaskets for you. Don't bother with the cheap Chinese eBay ones as they are miles out


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