DrEagle
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| posted on 16/3/05 at 09:39 PM |
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Views on Painting inside of a Sump
Just got my sump back from shot blasting.
Do i risk painting the inside with engine enamel?
or am i being thick?
Never be afraid to try something new!
Remember that a lone amateur built the Ark with no budget,
where as a large group of professionals spent millions building the Titanic!
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Dave Ashurst
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| posted on 16/3/05 at 09:47 PM |
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Why paint it?
a) Seems like potential future trouble if you do.
b) It won't go rusty if you don't.
in my opinion
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hector
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| posted on 16/3/05 at 09:52 PM |
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I would think NOT, you dont know how the paint would react to the oil long term, flakes of paint looming in engine would be in the back of my mind!!
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Ben_Copeland
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| posted on 16/3/05 at 09:53 PM |
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Metal plus oil... why paint it ?
Wont rust because of the the oil over it 
Ben
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Danozeman
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| posted on 16/3/05 at 09:58 PM |
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Why paint it.. Itl flake off and do your bearings.. and may go gungey with the oil and sod everything up..
Dan
Built the purple peril!! Let the modifications begin!!
http://www.eastangliankitcars.co.uk
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DrEagle
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| posted on 16/3/05 at 09:59 PM |
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ok ok
Im being stupid.
Thanks Chaps
Never be afraid to try something new!
Remember that a lone amateur built the Ark with no budget,
where as a large group of professionals spent millions building the Titanic!
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stevebubs
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| posted on 17/3/05 at 12:17 AM |
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powdercoat - yes; paint - no.
but why bother? the oil in it will prevent rust - you don't paint the inside of your block, afterall
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the JoKeR
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| posted on 17/3/05 at 12:38 AM |
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Glyptal: This is about as much paint as I would put inside the engine. Although I have no first-hand experience with Glyptal, it has a strong
following with a lot of engine builders for use on non-machined areas to create more of a non-porus surface. The thought is that it will help get the
oil back into the pan faster. Here's an example of it in use on the top-end of this engine (it's the red stuff!)
[Edited on 17/3/05 by the JoKeR]
__________________________
Jeff
http://www.midwestwelding.com
http://www.locostusa.com/forums/
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wilkingj
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| posted on 17/3/05 at 06:55 PM |
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I would NEVER paint inside an engine.
If it comes loose or flakes, or disolves with the oil on it, it will get in the oil and bearings and cause extra wear, or clog oilways needed for
lubrication.
Why paint inside?
1. It wont rust inside the engine - Too much oil splashing around.
2. No one will see your nice paint job anyway.
IMHO Its wasted effort, time and money.
Paint the outside if you want.. That I can understand and agree with.
1. The point of a journey is not to arrive.
2. Never take life seriously. Nobody gets out alive anyway.
Best Regards
Geoff
http://www.v8viento.co.uk
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britishtrident
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| posted on 17/3/05 at 06:58 PM |
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I have seen engines painted inside seemed to work BUT personally I wouldn't do it I have had too many bad experiences with peeling paint in
petrol tanks and jerry cans causing havoc.
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craig1410
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| posted on 17/3/05 at 07:21 PM |
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I agree, don't paint it...
When I first saw the picture above of the V8 engine with the painted valley I thought it was a picture I had seen before in an engine building manual
where someone had painted the inside of the engine with something like hammerite or some of the cheap gungy engine enamel. Anyway, it had all softened
and flaked off in large chunks and had completely destroyed the engine due to oilway blockage.
Whilst I agree that it is sometimes a problem with V8's getting oil back to the sump quickly, usually this can be improved sufficiently by
radiusing a few edges, drilling a few relief holes (in appropriate places of course) and removing the casting flash. You can also increase oil
capacity in the sump or go the whole hog and dry sump it if justified.
Hope this helps,
Craig.
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the JoKeR
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| posted on 18/3/05 at 12:25 PM |
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I might paint the lifter valley using the Glyptal, but I'd never do it without having the engine hot-tanked first to remove EVERY trace of oil.
This stuff isn't a regular engine paint and has been in use long enough to get a good reputation. It isn't 100% necessary, but I
don't think it's a bad idea *if done properly*.
__________________________
Jeff
http://www.midwestwelding.com
http://www.locostusa.com/forums/
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tks
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| posted on 18/3/05 at 02:48 PM |
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painting an engine
i even would pain a engine from the outside because in the summer you don't want to give you engine a pair of extra socks?? i see it like a
isolator..
TKS
The above comments are always meant to be from the above persons perspective.
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Simon
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| posted on 19/3/05 at 12:37 AM |
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As above - wouldn't paint it!
As for V8 oil return, as Craig says, plus a bit more. IIRC in Hardcastles R V8 book some people have got quite carried away removing all sand casting
marks so valley is quite smooth. Quicker oil removal = better heat dispertion.
Don't paint (for reasons previously given) and it adds mass which may retain heat?
ATB
Simon
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wilkingj
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| posted on 19/3/05 at 12:50 AM |
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http://www.v8engines.com/engine-4.htm
About 3/4 way doen the page.
If Chris Crane oes not advise it, then Dont do it.
1. The point of a journey is not to arrive.
2. Never take life seriously. Nobody gets out alive anyway.
Best Regards
Geoff
http://www.v8viento.co.uk
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craig1410
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| posted on 19/3/05 at 05:39 PM |
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Yes that's the photo I was talking about earlier in the thread, I just couldn't remember where I had read it...
Craig.
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coovey
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| posted on 19/3/05 at 10:35 PM |
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i wouldn't dream of painting the inside. asking for trouble in the future.
Plus you'll hopefully never see it again
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stephen_gusterson
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| posted on 19/3/05 at 10:57 PM |
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as you cant see inside an engine, why paint it!!!!!! its gonna be covered in oil anyway. while your at it, you could paint the crankshaft
too.......
atb
steve
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JoelP
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| posted on 19/3/05 at 11:24 PM |
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oil paintings... just ask van gogh.
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clbarclay
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| posted on 19/3/05 at 11:29 PM |
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quote:
Originally posted by stephen_gusterson
you could paint the crankshaft too.......
But I thought the paint I used on my main bearings was oil based so I didn't need to put oil in the sump....
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