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Author Topic: 650 engine year please!  (Read 5837 times)

Offline BeatsBreaks

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650 engine year please!
« on: July 20, 2022, 06:08:19 PM »
Hi all...

I've a 650 engine but in struggling to find year of it...

RC03E 2123818 is the number, anyone help - I've seen this page but not sure I understand it correctly - http://www.sohc4.com/cb550/cb650/

Thanks in advance!
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Offline Nurse Julie

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Re: 650 engine year please!
« Reply #1 on: July 20, 2022, 06:15:39 PM »
Is it a UK model or a USA import?. Is your VIN number the format of the 1st on that list or the 4th on that list?
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Offline Oddjob

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Re: 650 engine year please!
« Reply #2 on: July 20, 2022, 07:52:51 PM »
According to the page it's a 79. The 80 started with a different prefix on the engine number.

Scrub that, looking at the frame number, it's looks like an 80 SC model.
« Last Edit: July 20, 2022, 07:54:32 PM by Oddjob »
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Offline BeatsBreaks

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Re: 650 engine year please!
« Reply #3 on: July 20, 2022, 08:22:17 PM »
Quote from: Nurse Julie on July 20, 2022, 06:15:39 PM
Is it a UK model or a USA import?. Is your VIN number the format of the 1st on that list or the 4th on that list?

Its on a 550 frame!! so no idea if USA or UK

Thx
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1978 Honda CB550
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Offline Nurse Julie

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Re: 650 engine year please!
« Reply #4 on: July 20, 2022, 08:31:48 PM »
Quote from: BeatsBreaks on July 20, 2022, 08:22:17 PM
Quote from: Nurse Julie on July 20, 2022, 06:15:39 PM
Is it a UK model or a USA import?. Is your VIN number the format of the 1st on that list or the 4th on that list?

Its on a 550 frame!! so no idea if USA or UK

Thx
No idea then, sorry.
« Last Edit: July 20, 2022, 08:33:37 PM by Nurse Julie »
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LINK TO MY EBAY PAGE. As many of you know already, I give 10% discount and do post at cost to forum members if you PM me direct.
https://www.ebay.co.uk/sch/julies9731/m.html?item=165142672569&rt=nc&_trksid=p2047675.m3561.l2562

LINK TO MY CB400/4 ENGINE STRIP / ASSESSMENT AND REBUILD...NOW COMPLETE
http://www.sohc.co.uk/index.php/topic,14049.msg112691/topicseen.html#new

Offline davefirestorm

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Re: 650 engine year please!
« Reply #5 on: July 21, 2022, 07:02:21 AM »
I’ve just bought one of these sohc 650s ( not collected it yet ) it only has 1 front brake disc and speedo in kilometers I’m guessing it’s a Canadian import? Haven’t got the engine/frame numbers yet
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Offline BeatsBreaks

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Re: 650 engine year please!
« Reply #6 on: July 21, 2022, 05:39:46 PM »
Quote from: Nurse Julie on July 20, 2022, 08:31:48 PM
Quote from: BeatsBreaks on July 20, 2022, 08:22:17 PM
Quote from: Nurse Julie on July 20, 2022, 06:15:39 PM
Is it a UK model or a USA import?. Is your VIN number the format of the 1st on that list or the 4th on that list?

Its on a 550 frame!! so no idea if USA or UK

Thx
No idea then, sorry.

No worries :)
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Offline SteveW

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Re: 650 engine year please!
« Reply #7 on: July 21, 2022, 10:02:14 PM »
My 650 custom, got it on the road in March.
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Offline NICKYBOY

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Re: 650 engine year please!
« Reply #8 on: November 17, 2022, 02:48:28 PM »
Lovely job, mint. What carbs are they ?
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Offline SteveW

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Re: 650 engine year please!
« Reply #9 on: November 17, 2022, 03:00:03 PM »
PD50, they were a nightmare to get running right but they are ok now.

I bought a set of VB44’s to go on but they don’t fit as the later 650’s from 1981 had different head spacing.
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1974 CB550 K0
1980 CB650
2000 CBR929RR Fireblade
1966 Lambretta LI150 Series 3
1981 RD350LC
1972 Raleigh Chopper
1974 Raleigh Tomahawk
2011 Henry Hoover

Offline andy120t

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Re: 650 engine year please!
« Reply #10 on: November 17, 2022, 03:16:56 PM »
I found some Gpz600 ones which fit and apparently work well - according to the US forum. Just never had it running on them!
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Offline NICKYBOY

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Re: 650 engine year please!
« Reply #11 on: November 17, 2022, 04:49:11 PM »
What year/ model GPZ 600 are they from. I cant seem to find any with correct spacings !
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Offline SteveW

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Re: 650 engine year please!
« Reply #12 on: November 17, 2022, 05:19:06 PM »
Quote from: NICKYBOY on November 17, 2022, 04:49:11 PM
What year/ model GPZ 600 are they from. I cant seem to find any with correct spacings !

They won’t line up, you have to use the original GPZ carb rubbers as they are staggered.
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1974 CB550 K0
1980 CB650
2000 CBR929RR Fireblade
1966 Lambretta LI150 Series 3
1981 RD350LC
1972 Raleigh Chopper
1974 Raleigh Tomahawk
2011 Henry Hoover

Offline NICKYBOY

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Re: 650 engine year please!
« Reply #13 on: November 17, 2022, 06:05:54 PM »
Ah right cheers
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