Doms CB550F1 project

[McCabe-Thiele (Ted)]

Result. 👍👍👍

[Johnny4428]

Great Dom there on the bracketery! Nice to chase the Gremlins too.

[Laverdaroo]

Well done Dom, nice to hear some progress.
Good to fettle unexpected problems, it’s why we do it. If you ever do another just think of the confidence and knowledge you’ve accrued

Very satisfying, well done mate


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[DomP]

It's coming along nicely Roo, I'm looking forward to getting it painted but I think I'll get it on the road to get some miles on it first.  Definitely got an oil leak from the new oil pump o rings so whether I've pinched it when assembling I'm not sure.

[Bryanj]

Which O ring? Cover or pump to crankcase?

[DomP]

Which O ring? Cover or pump to crankcase?

Pump to crankcase it appears Bryan

*thinking about it now I wonder if its the oil pressure switch, as its fresh oil its so clean its hard to trace but I may just remove it and put a couple of turns of ptfe around it carefully

[DomP]

Sorted the leak out! 

Before I tentatively try a road test should I try and fine tune my carbs or just take it down the road running rich as it appears to be?  I've got a Morgan Carbtune but I'm conscious of running it for too long statically when it's on new pistons and a rebore.

[Laverdaroo]

Get it out on the road mate, you’ll know what needs sussing when you ride it or at least a starting point. Don’t run it on the bench it’s too hot and it’ll just knacker yer liners, get her out on the road and give it varied conditions. That’s the better way although takes longer than you want. I’ve not run mine for ages waiting on other bits for that reason. Seats ordered and away, just waiting on my paint slot and she’s done.
I’m dying to tune her up but the risk is too great after going to all this work to bugger it up just when you’re within inches of her being done, done.


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[Laverdaroo]

Get it out on the road mate, you’ll know what needs sussing when you ride it or at least a starting point. Don’t run it on the bench it’s too hot and it’ll just knacker yer liners, get her out on the road and give it varied conditions. That’s the better way although takes longer than you want. I’ve not run mine for ages waiting on other bits for that reason. Seats ordered and away, just waiting on my paint slot and she’s done.
I’m dying to tune her up but the risk is too great after going to all this work to bugger it up just when you’re within inches of her being done, done.


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[McCabe-Thiele (Ted)]

I'm with Roo here, run it get the pistons  to settle in a bit, it's amazing what some warming and cooling down of an engine can change.
If your dynamic timing is set a few miles will help you balance the carbs with more certainty as and when.

[DomP]

I think I'm just worried it's going to leave me stranded down the bottom of a hill, I can only go downwards from my place

[Laverdaroo]

It’s like that at my house Dom, best foot forward and all that.

Can of brake fluid in your pocket to encourage it to fire if it bogs is a handy thing to have if stuck. If only to limp home if it gets moody and gives up. It’ll be carbs so you might as well gob full to get it running if yer stuck. Just don’t give it heaps


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[DomP]

It’s like that at my house Dom, best foot forward and all that.

Can of brake fluid in your pocket to encourage it to fire if it bogs is a handy thing to have if stuck. If only to limp home if it gets moody and gives up. It’ll be carbs so you might as well gob full to get it running if yer stuck. Just don’t give it heaps


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I was quite tempted this afternoon but didn't get a chance between people visiting, how many miles should I do to being with and up to what rpm?  I still can't get a rev reading so I'll be guessing that bit.

[Bryanj]

If the engine is built to mr Hondas specs it onlyneeds bedding in not running in. More imortant to not run with revs to low (lugging) than letting it rev high

[DomP]

Thanks Bryan, I'll ride it like a semi loony then, to be honest brakes will be the limiting factor as they're not that great.