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1969 CL450 US Barn Find Restoration

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MrDavo:
If I've got this right - Tldr: The crap is flung as far out as possible, the crank is bigger than the centrifugal filter, ergo that is where the crap ends up.

I wondered about doing it myself, but then I read forum posts where people were having nightmares trying to drill out and then retrieve hardened balls from the oilways, sod that for a lark.

These guys have a lot of experience making old Honda engines go well:

http://www.d-mengineering.co.uk/

I emailed them last night and was surprised to get a reply around midnight:


--- Quote ---Hello,
Yes we can do that for you. We charge £125.00 + VAT to remove plugs, clean sludge traps, remove both end flywheels, clean and inspect big end cages + crank pins + rods, and rebuild. The first step is to check the pins. rods + cages. If there is a problem at this point we would let you know.
Is your a 4 speed motor?
There will be return P &P also.
I hope this helps,
--- End quote ---

Sounds like a deal, compared to the cost of it eating a crank, decent ones do look hard to come by, plus after my experiences with both the Harley and the CB750 I'm done with sudden unplanned crank changes, so I'm now looking for a suitable box. Thanks for your input Jensen, without it I would just have got on with the rebuild not knowing I had another ticking time bomb waiting to go off.

On another topic, what do we think for the frame, rattle can satin black (over undercoat) or powder coat?

Honda seem to have given it a typical coat of black paint, no visible primer, looks great in the showroom, not so great 50 years down the line.

AshimotoK0:
Hi ...  is yours a 4-speed or 5-speed Dave ? ..I assumed  it was a five speed, which has a totally different (more conventional) crank to the K0 'Bomber' ones that I have. Great heads-up anyway Jensen as I have four of those early (K0) cranks to sort out.

MrDavo:
It’s a 5 speed, CL450 K2, I assume the heads up re sludge traps still applies.

AshimotoK0:

--- Quote from: MrDavo on December 05, 2017, 01:48:09 PM ---It’s a 5 speed, CL450 K2, I assume the heads up re sludge traps still applies.

--- End quote ---

Not sure ..one for Jensen ! His diagrams refer to the K0 4-speed crank I think.

Here is a pressed apart K0 for comparison (not mine !)

[ Guests cannot view attachments ]

MrDavo:
Hmm, hard to say what's different with my crank, as its all in one piece at the moment. I'm guessing clean traps beat dirty ones whatever the model, there was a lot of black slime in the bottom of the cases, though nothing in the actual filter. Paging Jensen....

Meanwhile, as I was in the garage I just took these





I know what you're thinking 'But Dave, you've owned this bike for three weeks now, is that all you've done?'

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