Author Topic: Painting my engine a few questions  (Read 1737 times)

Offline Sesman

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Re: Painting my engine a few questions
« Reply #15 on: October 22, 2023, 04:08:27 PM »
Thanks Ken. Makes perfect sense. TBH I didn’t study the cylinder head oil pathways before reassembling as I went for the bung removal method after I’d cleaned up. As you say, I was probably being over cautious as the gallery proved to be squeaky clean.

Ta again.

Offline Oddjob

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Re: Painting my engine a few questions
« Reply #16 on: October 22, 2023, 05:59:40 PM »
To me Phil, removing them just means they have the potential to fail afterwards, I can't see the point of risking them blowing out under pressure and ruining the engine. The risk of that IMO exceeds the risk of damage caused by anything in those galleries. Especially if you clean them as I describe, like taking a lump hammer to a hazelnut. 
Kids in a the back seat cause accidents.
Accidents in the back seat cause kids.

Offline McCabe-Thiele (Ted)

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Re: Painting my engine a few questions
« Reply #17 on: October 22, 2023, 08:10:11 PM »
I'm risk averse so not a fan of invasive cleaning like removing plugs.
Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html
This is a neat 500 restoration in the USA.
http://forums.sohc4.net/index.php/topic,151576.msg1731556.html#msg1731556

Offline Sesman

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Re: Painting my engine a few questions
« Reply #18 on: October 22, 2023, 08:59:42 PM »
So am am I, Ted. ‘Twas the reason I checked the gallery for debris. Done properly there is as much chance of the plunges blowing out as there was when the engine was originally built. Personally I wouldn’t do it again as it was a right faff with no real benefit as it turns out.

Offline Oddjob

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Re: Painting my engine a few questions
« Reply #19 on: October 22, 2023, 09:38:55 PM »
Whilst a faff as you call it others may ruin the plug trying to get it out or it might leak afterwards for instance. No real gain IMO for what is a right pain to do correctly. If you were an engineer for instance you could always make a new plug if you ruined the old one but why bother.
Kids in a the back seat cause accidents.
Accidents in the back seat cause kids.

Offline Sesman

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Re: Painting my engine a few questions
« Reply #20 on: October 23, 2023, 07:48:18 AM »
Aye. I had new ones made by a mate. Just seen a Milyard vid where he does the same to a 900 Kwacker.
« Last Edit: October 23, 2023, 07:53:14 AM by Sesman »

Offline Oddjob

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Re: Painting my engine a few questions
« Reply #21 on: November 09, 2023, 01:17:18 AM »
Were they just flat sided plugs Phil or were they tapered so the further they went in the tighter they become. I'd imagine Honda pressed them in hydraulically, not the same if you're knocking them in with a hammer I'd imagine.
Kids in a the back seat cause accidents.
Accidents in the back seat cause kids.

Offline Sesman

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Re: Painting my engine a few questions
« Reply #22 on: November 09, 2023, 07:36:31 AM »
Just a slight taper to get them started. Cold plugs pressed into a warm head,but you could knock them in just as easily.

 

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