Fresh rebore

[st66]

Just picked my barrels up this morning had a fresh rebore to 65mm with new pistons ect and a tidy up of the porting so they match,, rull race spec now so, my question is won't be a while few months or so before I build the engine,, so that in mind should I oil the bores or leave them dry as is not wanting them rust or something or will the oil soak into the bores over time?, any suggestions 👍👍

[flames]

I always oil my bores. It will prevent rust. I also keep them in boiler cupboard so there's no damp as well.

[st66]

Ha ha already under the stairs mate but will she who must be obeyed smell the oil coming from the magic box that's just appeared there is the question lol is it worth the,, anth wots in this box under the stairs?? And why does it smell funny,,,, question with the undoubted verbal abuse to follow,,,,,, 🤔🤔🤔🤔🤔.
YEP LOL

cheers mate ile oil em up and just say we'll the voices said,, hun

[midlifecrisisrd]

They will need cleaned most likely

Take a bit of white kitchen towel and spray with wd40

If you wipe the bore or a port and there is a dirty mark on the towel there is residue on them

Clean them to within an inch of their lives then lightly oil

Steve

[flames]

I oil em and wrap in bubble wrap or an old sheet. Then box em up. Never had a problem with smell. Just smear the bores, don't fill em up.😁

[st66]

Sound cheers guys, 👍👍👍👍

[nobby62]

Wait till the engine build starts..... 😝

[st66]

Ha well she's in showers so quickly brake cleaner them wiped them clean and oiled them wrapped all tight and under the stairs mint lol few pics before oiled

[st66]

Ah just the man Mr arrow,,, as theses barrels are a bit more than slightly ported willprobably be sending you a new oil pump from Mr norbo when I sort it for a 31k ypvs will it require modding and I'm not sure wot carbs Ile be running but prbs not standard, was the oil pump question I was clarifying,, as your the pump man no one better to ask 👍 if that's OK I mean,,,

[flames]

Deffo THE pump man. He is a miracle worker.😊

[steeley]

Hmmm , you will be a time with the files taking the edges off the ports before fitting them .So they will need a good soak and scrub in some warm soapy water before drying and oiling.

[st66]

Steely how do you mean mate,?? I need to file the edges of the ports

[flames]

Think he means ports will need chamfering. I can't see from pics, but you don't want sharp edges on ports . Can cause rings to snag.

[st66]

Ah I get you now cheers flames mate they are a bit sharp all my guy said was check the gap with the valves fitted against the piston so they don't catch the rings said about 1mm gap should be fine I'm presuming the valves don't go near the pistons unless your getting close to 65.5to max 66 mm but I'm at 65 so he's probs being carful

[flames]

Sorry bud I don't know about the powervalves, I have a motor but haven't done anything with it yet. I guess they would need matching to ports.

All the windows in the cylinder will need to be chamfered so rings don't catch. Some places do this with a bore, some don't. I can't see from pics if yours have been done.im guessing not as this has been highlighted.

[midlifecrisisrd]

Valves will be fine at 65mm

Only usually a prob over 1.5 over

If the port edges are sharp buy a very small curved file and champfer the edge off

Easier if you snap it

Steve

[st66]

Cheers flames, Steve,, can't really see from pics so had a quick look the inlet and exhaust are fine it's the little ones on the edges I think looking at them he's ported them and then bored them as the little ones are slightly sharp on the edges so as said ile file the edges of smooth another thing learnt today cheers guys 👍👍👍👍

[nobby62]

A really tiny chamfer not a great 3mm x 45 deg job.....think more “removing sharp edge” than big chamfer....

[st66]

Cheers nobby mate sound 👍👍👍

[st66]

And I'm presuming top and bottom of the ports, or all the way around as I'm guessing the sides won't matter?

[st66]

Well sat for a hr or so this afternoon in the sun and took the filetothe sharp edges in my ports on the barrels I had rebore, and happy no sharp edges to the touch with the old finger measuring tool,, cleaned them oiled them for the second time wrapped em and put them away for later date,,, wot a way to kill an hr 🙄🙄🙄

[steeley]

Nice , as the other chaps have said the sharp edge needs to be taken off the ports it gives the rings an easier life.

[st66]

Cheers steely mate would never have thought to do that if you hadn't of mentioned it so cheers👍👍👍