Author Topic: Cleaning Engine Internal parts.  (Read 1297 times)

Offline Man Of Kent

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Cleaning Engine Internal parts.
« on: October 03, 2019, 04:30:08 PM »
Afternoon all,

I have been given quite a few boxes of 400/4 engine parts, the chap had stripped down about 3 engines. A lot of the parts has got slight surface rust. My question is what is the best method in cleaning them up, I am cautious in using abrasives as being machined engine parts. My thought was too soak them in diesel then use a old tooth brush, degrease them to wash off the diesel. Then give the a light spray of oil and bag up in poly bags.

I would really like to know what you experts suggest.

Cheers Dave
« Last Edit: October 03, 2019, 04:48:50 PM by Man Of Kent »

Offline Laverda Dave

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Re: Cleaning Engine Internal parts.
« Reply #1 on: October 03, 2019, 06:16:33 PM »
You can clean the parts in an ultrasonic bath with a suitable cleaning solution. Look at the Allendale Ultrasonic site (both on the Web and on ebay). They send the cleaning solution P&p free.
Personally I wouldn't re-use roller bearings if they have any rust on them.
1976 Honda 400/4
1977 Rickman Honda CR750
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1955 750 Dresda Triton
1978 Moto Morini 350 Sport
1978 Honda CB400/4 'Rat' bike
1982 Laverda 120 Jota

Offline Rob62

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Re: Cleaning Engine Internal parts.
« Reply #2 on: October 03, 2019, 06:25:58 PM »
Thats more than slight surface rust.....  :o . Use a paperweights only, unless you are absolutely desperate for the spares.

Offline Nurse Julie

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Re: Cleaning Engine Internal parts.
« Reply #3 on: October 03, 2019, 06:35:54 PM »
I have seen a lot, lot worse but unless they are very rare, totally unobtainable parts, which they aren't, I wouldn't even bother. Surface / flash rust is ok to clean up but not rust that deep, the parts won't function correctly by the time you chisel off the rust.
LINK TO MY EBAY PAGE. As many of you know already, I give 10% discount and do post at cost to forum members if you PM me direct.
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Offline Man Of Kent

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Re: Cleaning Engine Internal parts.
« Reply #4 on: October 03, 2019, 06:45:48 PM »
I think the pictures makes the rust look worst than it is, but is diesel ok to use or should I be using other chemicals?  :-\

Offline Nurse Julie

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Re: Cleaning Engine Internal parts.
« Reply #5 on: October 03, 2019, 06:54:25 PM »
I think the pictures makes the rust look worst than it is, but is diesel ok to use or should I be using other chemicals?  :-\
Oh yes, photos do make rust look pretty horrific, I forgot about that 😀 If you think they are salvageble, a good soak in diesel and a scrub with a brush will be fine. Don't wash the diesel off after cleaning as it will leave a nice film of oil as protection. Then just bag up.
LINK TO MY EBAY PAGE. As many of you know already, I give 10% discount and do post at cost to forum members if you PM me direct.
https://www.ebay.co.uk/sch/julies9731/m.html?item=165142672569&rt=nc&_trksid=p2047675.m3561.l2562

LINK TO MY CB400/4 ENGINE STRIP / ASSESSMENT AND REBUILD...NOW COMPLETE
http://www.sohc.co.uk/index.php/topic,14049.msg112691/topicseen.html#new

Offline Man Of Kent

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Re: Cleaning Engine Internal parts.
« Reply #6 on: October 03, 2019, 06:58:57 PM »
I think the pictures makes the rust look worst than it is, but is diesel ok to use or should I be using other chemicals?  :-\
Oh yes, photos do make rust look pretty horrific, I forgot about that 😀 If you think they are salvageble, a good soak in diesel and a scrub with a brush will be fine. Don't wash the diesel off after cleaning as it will leave a nice film of oil as protection. Then just bag up.

Cheers Julie, I shall give it a go and see what happens.  ;D

Offline Nurse Julie

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Re: Cleaning Engine Internal parts.
« Reply #7 on: October 03, 2019, 07:02:57 PM »
I think the pictures makes the rust look worst than it is, but is diesel ok to use or should I be using other chemicals?  :-\
Oh yes, photos do make rust look pretty horrific, I forgot about that 😀 If you think they are salvageble, a good soak in diesel and a scrub with a brush will be fine. Don't wash the diesel off after cleaning as it will leave a nice film of oil as protection. Then just bag up.

Cheers Julie, I shall give it a go and see what happens.  ;D
Always worth trying to save parts. You will know if they are beyond saving if you see any obvious damage or pitting in the metal after cleaning.
LINK TO MY EBAY PAGE. As many of you know already, I give 10% discount and do post at cost to forum members if you PM me direct.
https://www.ebay.co.uk/sch/julies9731/m.html?item=165142672569&rt=nc&_trksid=p2047675.m3561.l2562

LINK TO MY CB400/4 ENGINE STRIP / ASSESSMENT AND REBUILD...NOW COMPLETE
http://www.sohc.co.uk/index.php/topic,14049.msg112691/topicseen.html#new

Offline Trigger

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Re: Cleaning Engine Internal parts.
« Reply #8 on: October 03, 2019, 08:29:54 PM »
The problem with any rust removal is, that the part becomes unbalanced  ;)

 

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