Cleaning engine grime. - Wrist Twisters
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post #1 of 10 Old 06-29-2019, 08:28 PM Thread Starter
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Cleaning engine grime.

Scotch Brite have a non scratch scouring pad and it works a treat.
I wanted a mechanical non chemical way to remove baked on engine grime without scratching paint. These pads did that. Years of bike polish, getting crazy with the WD40, oil, dirt, bugs guts etc had left my motor a little grimy. Especially underneath. Looking underneath my bike sets of my OCD.
I sprayed on a mild detergent the night before. Then the next day with warm water and a little detergent I went at it. At first I started to freak out cause I see a layer coming off. Haha turns out my engine was a shade more grey than I thought, grime.
True to word none of the paint was scratched. Even paint I'd put down wasn't scratched. I had a good crack too. Took a couple of hours and I did underneath.
The pads have good angles on them with foam on one side so you can get into all the tight spots.
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post #2 of 10 Old 06-30-2019, 06:24 PM
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Quote:
Originally Posted by Islandboy View Post
Scotch Brite have a non scratch scouring pad and it works a treat.
I wanted a mechanical non chemical way to remove baked on engine grime without scratching paint. These pads did that. Years of bike polish, getting crazy with the WD40, oil, dirt, bugs guts etc had left my motor a little grimy. Especially underneath. Looking underneath my bike sets of my OCD.
I sprayed on a mild detergent the night before. Then the next day with warm water and a little detergent I went at it. At first I started to freak out cause I see a layer coming off. Haha turns out my engine was a shade more grey than I thought, grime.
True to word none of the paint was scratched. Even paint I'd put down wasn't scratched. I had a good crack too. Took a couple of hours and I did underneath.
The pads have good angles on them with foam on one side so you can get into all the tight spots.
How about a pic of that particular Scotch Brite packaging?

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post #3 of 10 Old 06-30-2019, 07:21 PM Thread Starter
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I'd thrown my packaging away. I did a Google search for an image. They're blue.
A few slightly different packets popped up but these were the exact ones I grabbed from my local supermarket. Probably vary around the world.
I tried em on my old sun blasted car paint and they didn't scratch that either. The paint underneath my 919 engine is a little rough and I was worried these pads might remove the paint especially where a stone chip was but no. They just took the layer of grime off. I rinsed them often in case the pads picked up any grit.
There's no way I would scrub my engine with a Scotch Brite green pad unless I intended to repaint.
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post #4 of 10 Old 06-30-2019, 07:27 PM Thread Starter
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The pic quality doesn't really help.
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post #5 of 10 Old 06-30-2019, 10:24 PM Thread Starter
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Found it.
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post #6 of 10 Old 07-01-2019, 08:46 AM
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Quote:
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Found it.
I found them online at Canadian Tire. They have two types, one is sponge backed like the one you used, the other is pad alone.

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post #7 of 10 Old 07-01-2019, 05:22 PM Thread Starter
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Probably no advantage having the foam backing in this situation. Next time I need some I'll grab the non foam type.

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post #8 of 10 Old 07-02-2019, 02:37 AM
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Looked for the non-foam type, didn't see them, so I got the ones pictured. I'm going to give it a try. You sprayed the underside of the oil pan with dish soap and let it soak in for a while then used a bucket of soapy water and washed it?

I'm thinking Dawn soap in a bucket of water?

The underside of the oil pan probably has a pound of grime on it, that would be hard to clean off.

I wonder if Purple Power or Simple Green would be a good choice over Dawn in a bucket.

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post #9 of 10 Old 07-02-2019, 03:34 AM Thread Starter
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I just used standard household dish detergent. Fairly strong mix sprayed on evening before. Cold engine. Then the next day scrubbed fairly hard with about 2l of same detergent/warm water mix handy. For rinsing pad in.
If your grime is crazy thick maybe something stronger than household detergent.
The grime on the front of my engine would not shift with just a rag. Nor with WD40, degreaser, detergent, hot water etc. I didnt want to hit it with a pressure washer since the paint is a little chipped some flaking. Figured a power washer would remove paint.
One morning a week ago I had bad condensation on the bikes engine. Well I noticed I could scratch that damp grimy layer off with my finger nail. Got me some non scratch scouring pads.
Good idea to start underneath. Test where you can't normally see.
I ended up going right over the entire engine. Didn't scratch or remove any paint as far as I can tell.
Did you get a good look at the underneath of your bike the other day?
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post #10 of 10 Old 07-03-2019, 04:00 PM
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Spray 9 is real good at removing petroleum based grime. I've often had real good luck with my pressure washer. If you want less pressure simply back up.

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