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skapoor

2025-05-19, 09:23:12
I am looking for a carburettor for veteran Douglas motorcycle engine-13651. Could you please help me with this?

Dave

2025-01-07, 19:16:39
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Dave

2024-06-11, 21:02:05
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4HP pistons

Started by kmd, 27 Nov 2009 at 14:51

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kmd

27 Nov 2009 at 14:51
Hi All

Could any one help me with the standard piston (Cast iron) dimensions on a 4HP?
  +Distance from the crown to the centre of the gudgeon pin and overale length.

Regards
Kevin

Doug

#1
29 Nov 2009 at 03:38
Kevin,

Just checked a used pair out of a spare engine and get one inch even from the center of the gudgeon pin to the top of the piston (flat, no crown.) Overall length from the bottom to the top is 2.75 inches.

-Doug

kmd

#2
30 Nov 2009 at 09:03
Thanks Doug
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