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Doms CB550F1 project
DomP:
--- Quote from: Oddjob on September 02, 2023, 08:47:33 PM ---
--- Quote from: DomP on September 02, 2023, 04:29:46 PM ---Ken, do you remember offering any more help I might need? 😉 I might be asking a few questions
--- End quote ---
Feel free, my favourite engine the 500/550.
--- End quote ---
Thanks Ken! I'm enjoying it at the moment. The tacho drive that screws into the rocker cover? It came out easily
DomP:
--- Quote from: Bryanj on September 02, 2023, 08:48:56 PM ---Dont remember seeing where you are located apart from uk, which whilst smaller than us still covers a big area
--- End quote ---
Good old Herefordshire, right on the Welsh border just outside a town called Kington.
K2-K6:
--- Quote from: DomP on September 02, 2023, 08:37:11 PM ---
--- Quote from: Bryanj on September 02, 2023, 08:33:58 PM ---Nowt wrong with that cam
--- End quote ---
That's a relief Bryan, I'm not sure if I want to find any other issues that answer my problems or whether a clean bill of health would be good. Either way I'll be fixing a head gasket leak so it's all positive!
--- End quote ---
What about the holes / inclusion on the lobe nearest the sprocket flange in 3rd photo ? Looks like a good cheddar on my screen :o
Oddjob:
Yeah, that's what I spotted, number 3 inlet lobe. Showing some pitting, you need to check the other lobes for the same type of damage Dom. Also check the rocker that runs on that lobe for damage that pitting may have transferred to it. You should have a 550F type rocker cover, we need to check that's the case as they can be swapped and sold and fitted with a 500 cover. The 550 is the better type of over as the rocker shafts were pegged to stop them rotating and ovaling the holes out in the cover body. However the pegged shafts are prone to premature wear so maybe think about removing those as well.
Don't hammer the cylinder head fins to get it unstuck BTW or you'll break them. 2 small bolts fitted front and rear of the cam tunnel as well, make sure they are out. Use a rubber mallet or better still what is called a Compothane hammer, which is like a plastic hammer but the head is filled with lead shot so it gives a real dead blow which tends to shock stuff loose but without breaking it.
Like this.
https://www.screwfix.com/p/magnusson-dead-blow-rubber-mallet-35oz-0-99kg-/3081V?kpid=3081V&cm_mmc=Google-_-Datafeed-_-Tools?kpid=KINASEKPID&cm_mmc=Google-_-TOKEN1-_-TOKEN2&gclid=Cj0KCQjwusunBhCYARIsAFBsUP8616XTHja4_0HC5RPXdGZ7TOykNRarRGVFWQZhGP1N4kUKdpvza2kaAu5FEALw_wcB&gclsrc=aw.ds
DomP:
I'll get some photos of the rocker lobes tomorrow but they all looked really good to me, I did notice the blemishes on the one lobe. I really appreciate everyone's help on this, proper like minded community spirit!
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