Author Topic: Engine numbers  (Read 319 times)

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Grumpy Geezer

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Engine numbers
« on: 09 March, 2018, 14:49:06 »
 I am currently restoring a Super Rocket and have recently had the crankcases vapour blasted. I now have very clear numbers on the crankcase and would like some information regarding these numbers........as follows
DA10 R 4689...HC    I know its an engine number and I believe a 1962, but does HC mean High Compression or what?
Very much appreciate some info..

bikerbob

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Re: Engine numbers
« Reply #1 on: 09 March, 2018, 17:05:50 »
That number would indicate a 1961 engine. 1961 engines began DA10R-3001. 1962 engines began DA10R-5958 the HC does stand for high compression. You can check this out for yourself on the homepage for this site just click machine dating and follow the links.

DEREKANDERSON8

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Re: Engine numbers
« Reply #2 on: 09 March, 2018, 19:00:47 »
here it is

 ;)

JulianS

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Re: Engine numbers
« Reply #3 on: 09 March, 2018, 19:20:49 »
The 1961 season bikes started in September 1960 and went through to August 1961.

Grumpy Geezer

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Re: Engine numbers
« Reply #4 on: 10 March, 2018, 12:24:23 »
THANKS EVERYONE>>>>>Exactly what I wanted to hear..