Just a long shot.Would anyone have a decent 1641 barrel they want to part with.Dropped one of mine today and it took a chip out of the skirt.Luckily they weren't brand new but were perfectly useable.
Cheers
Roy

If I recall parts emporium have an odd one for sale

http://www.partsemporium.co.uk/index.htm

Thanks for that.Have checked they don't seem to have one at the mo

Hi Roy, I might have some but it is not straight forward just swapping 1 Barrel or Piston or both. Different makes of pistons weight varies greatly and the gudgeon pins too. Cylinders can be different heights, meaning the heads do not sit level on both cylinders as you tighten them down and so leak. I know I have 2 very low milage B+P's but I will look for another barrel. Can you measure the height of your barrel inbetween the two sealing surfaces?

With Rob here, if it was me I'd go for 4 new 1600 B&Ps at around £150.
Really not worth using mismatched parts IMHO.

All very good valid points which I hadn't taken into consideration. So I think I will get a new set that match. Thankyou both for your input.
Roy

I wouldn't mess around with the fabled 'Big Bore' 1641's Roy. (14.25cc per cylinder bigger than a stock 1600 which is less than a remote controlled plane) On a 1600 Buggy unless you are planning big miles or hard driving a set of cast Mahle's will do.
Last set I bought were from VeeWee at around £130 but that was when I built Raspberry.
The added bonus of new gudgeon pins, circlips and piston rings makes it worthwhile. 

If you are still looking for one I may have one.

Cheers Flags.Will check prices out.Just thought I could find another one as the one I dropped was newish came out of a very low mileage engine that had other problems.Cant believe how thin the skirt is on them.Didnt even drop it from a great height.No idea what make they were.Engine had been reconditioned cos you can see the cross hatchings in the bore.IDA might have one and he's local so might have a look.

Hi Ida,yeah might be interested if you have one.Your not far from me.Do you want me to measure distance between sealing surfaces?