Author Topic: 1976 CB550F1 (what have I let myself in for) Project  (Read 31184 times)

Offline Laverda Dave

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Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #195 on: March 01, 2021, 03:38:26 PM »
Well done, looks like you have solved the problem👍. This is a great thread.
1976 Honda 400/4
1977 Rickman Honda CR750
1999 Honda VFR 800FX
1955 750 Dresda Triton
1978 Moto Morini 350 Sport
1978 Honda CB400/4 'Rat' bike
1982 Laverda 120 Jota

Offline eight0

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Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #196 on: March 01, 2021, 03:40:11 PM »
Thanks guys.
Well there's still the oil ring problem. On the bench the pistons were still too tight, but I'll get back to that once I've fixed the bottom end.

Offline eight0

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Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #197 on: March 01, 2021, 05:20:00 PM »
After all that, there doesn't appear to be a problem with the rings. Replaced the rods with the ones from the old crank, luckily I had the right bearings.
Removed the chains and put a couple of bolts in the cases to test and...

https://youtu.be/9eBTKUbwU74

The moral of this story, is always check your second hand parts thoroughly.

Thanks for the advice everyone.

Offline Nurse Julie

  • 1977 CB550/4 Mongrel Brat. 1974 UK 500/4 K1. Honda CD250u.
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Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #198 on: March 01, 2021, 05:43:10 PM »
Great work and diagnostics. Now smear some oil and graphigen around the inside of the barrels.
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 eight0

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Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #199 on: March 02, 2021, 07:03:46 AM »
Thanks Julie. I'm pretty new to mechanics and have never taken apart an engine completely before but I do feel like a bit of a walley for not noticing the rods sooner. Ah well. Glad it's sorted now!

Put the time in yesterday to get the cases back together and back in the frame so now at least I'm back to where I started.

Offline Bryanj

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Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #200 on: March 02, 2021, 07:55:50 AM »
Looking at that ro i wouldsay its stripdown or carriage damage rather than hydraulic lock

Offline philward

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Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #201 on: March 02, 2021, 10:16:47 AM »
Thanks Julie. I'm pretty new to mechanics and have never taken apart an engine completely before but I do feel like a bit of a walley for not noticing the rods sooner. Ah well. Glad it's sorted now!

Put the time in yesterday to get the cases back together and back in the frame so now at least I'm back to where I started.

Don't feel a walley, we all live and learn - if you are new to mechanics, I think you have done really well with this problem in light of how unusual the issue was. I guess you have certainly learned a lot!
Current Bikes:-
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Kawasaki ZZR250 (1990) Project (Going on eBay ASAP)

Offline Bryanj

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Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #202 on: March 02, 2021, 01:51:58 PM »
I agree with that, few professional mechanics would look for bent rods unless a problem(like yours) was spotted

Offline eight0

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Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #203 on: March 02, 2021, 06:27:28 PM »
Thanks guys, yes certainly learnt a lot!

Does anyone have any sources for the M8x145 engine bolt? Mine is bent for some reason. They are available on CMS and DS for order from the states but there must be somewhere I can just order a flanged bolt from.. or another bike that takes the same sized  bolt.

Offline Nurse Julie

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Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #204 on: March 02, 2021, 07:50:50 PM »
Thanks guys, yes certainly learnt a lot!

Does anyone have any sources for the M8x145 engine bolt? Mine is bent for some reason. They are available on CMS and DS for order from the states but there must be somewhere I can just order a flanged bolt from.. or another bike that takes the same sized  bolt.
I will have a look to see if we have some here.
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 eight0

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Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #205 on: March 03, 2021, 08:43:31 AM »
Thanks guys, yes certainly learnt a lot!

Does anyone have any sources for the M8x145 engine bolt? Mine is bent for some reason. They are available on CMS and DS for order from the states but there must be somewhere I can just order a flanged bolt from.. or another bike that takes the same sized  bolt.
I will have a look to see if we have some here.

Thanks Julie, that would be great.

Offline Nurse Julie

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Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #206 on: March 03, 2021, 09:10:48 AM »
Thanks guys, yes certainly learnt a lot!

Does anyone have any sources for the M8x145 engine bolt? Mine is bent for some reason. They are available on CMS and DS for order from the states but there must be somewhere I can just order a flanged bolt from.. or another bike that takes the same sized  bolt.
I will have a look to see if we have some here.

Thanks Julie, that would be great.

Yes Adam, have one of them, I will PM you.
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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 eight0

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Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #207 on: March 04, 2021, 11:43:50 AM »
DK have been pretty unhelpful about the bent rods.

I messaged them about the bent rods and they came back and offered me replacement ones. I said that I had some spares myself which I used and asked them for a partial refund.

They said 'glad you sorted it.'

I again asked for a partial refund and they said, we offered you replacement rods and you said no.

Oh well.

Offline Laverda Dave

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Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #208 on: March 04, 2021, 12:05:56 PM »
That's a great advert for customer relations!
I wouldn't let it go, you paid for a replacement part that should have been acceptable but it wasn't. The fact they offered replacement rods is immaterial. How would they know if the journal bearings were the same, you were lucky your replacements fitted with new shells.
If it was me I'd being sending them a letter as a formal request for a partial refund (you need to clearly state the level of refund you require). If they refuse advise them you will take them to the small claims court under the sale of goods act. I'd also advise them you are posting progress of your dealings with them on social media.
Their behaviour has all the hallmarks of a company that doesn't give a stuff about individuals because they have a high turnover.
Companies like these need to be held accountable for the goods they sell and their guarantee.
1976 Honda 400/4
1977 Rickman Honda CR750
1999 Honda VFR 800FX
1955 750 Dresda Triton
1978 Moto Morini 350 Sport
1978 Honda CB400/4 'Rat' bike
1982 Laverda 120 Jota

Offline eight0

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Re: 1976 CB550F1 (what have I let myself in for) Project
« Reply #209 on: March 04, 2021, 12:17:11 PM »
I hear what you're saying Dave, but sometimes you just have to pick your battles. I have what I need because luckily I had the spares already as you say.
I just can't be bothered with the hassle. I paid £60 for the crank and rods so we are only talking about 20 quid max. It's just a shame they don't seem to respect the customer.

 

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