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Post by Bozzy on Apr 18, 2024 19:30:16 GMT 1
Hi, just after some advice on cleaning up cylinders and getting ready to fit. Just got them back from shop new rebore great job ...
1) thinking might be best for me to clean out but they do look clean however are powder coated finish so was thing wash out water under tap and dry/light oil new bores?.
2) Perhaps should have sorted before sending but the exhaust ports/ports are still brown with carbon etc was thinking to just clean them up with wirewool and polish up a bit with metal polish ..Assume this is best way?
3) Head surface still have the stain from the gasket assume this is ok?
Anything else I perhaps need to do.. Port edge feel ok TBH but is it best to just ensure edges are smooth
Yep I know basic but want to ensure its spot on and don't do anything I regret...
oh and FYI wow I would say rebuild now over £1600! I
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Post by chrisg on Apr 19, 2024 13:27:45 GMT 1
Whilst there off, give them a good clean, make sure that all the bore ports have been chamfered. I usually clean with a de greaser, jet wash and then blast with an air line finally blasting with WD40 to clear any residue.
Scotchbrite should get the staining off the head.
As for price, I would say do it once, do it right, as you have done.
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Post by Bozzy on Apr 19, 2024 17:12:11 GMT 1
Thanks for feedback... Looks like ports have been chamfered... like you said best to give them a good wash through and WD40...  IMG_0279 by Bozzy Bozzy, on Flickr  IMG_0278 by Bozzy Bozzy, on Flickr |
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Post by archloafer on Apr 19, 2024 18:17:17 GMT 1
My two-penneth - I'm happy to clean cylinder heads with de-greaser (the 3-in-1 foaming stuff works well) and rinse with water, but not comfortable with water going anywhere near the bores. Fine scotchbrite and WD40 / GT85 will clean carbonisation and any old gasket residue off reliably. Then a good sluice out with brake cleaner, and wipe over everything with WD40.
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Post by Bozzy on Apr 19, 2024 18:50:07 GMT 1
cheers might use carb cleaner then to wash out anything that may be left or white spirits . Never had any issues using that stuff and WD 40 as you say. Perhaps not wash them under the tap as I did before they went:-)
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Post by JonW on Apr 20, 2024 0:37:51 GMT 1
You can wash engine parts under a tap, workshops often do that after using a parts washer to loosen the much/dirt/swarf etc. The final rinse under pressure can help remove any residue.
Its fine so long as you dry them after fully and then do something to protect them.
The places Ive visited / worked in used an airline / compressor to blow the water off fully right after them getting wet.
Most reborers will advise you to fully clean the cyls when they give them back to you. I think its partly cos they are protecting themselves of course.
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Post by midlifecrisisrd on Apr 20, 2024 9:58:47 GMT 1
I've always sprayed through all the ports with carb cleaner or if you have panted them white spirit
Then take a kit of white kitchen roll, spray wd40 on it and wipe the bore
If there is any discolouration on the towel get a new piece, wd40 again and keep wiping till it is clean
The cross hatching holds onto grime
Steve
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Post by JonW on Apr 20, 2024 13:54:10 GMT 1
I've always sprayed through all the ports with carb cleaner or if you have panted them white spirit Then take a kit of white kitchen roll, spray wd40 on it and wipe the bore If there is any discolouration on the towel get a new piece, wd40 again and keep wiping till it is clean The cross hatching holds onto grime Steve I use a parts washer and one of those washing up brushes thats like a mini bog brush... but, i appreciate people will say that we dont all have a pasts washer... or perhaps even an ice cream tub and a litre of kerosine... lol  |
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