Engine Cleaning... Advice! - Subaru WRX Forum
 
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post #1 of 15 Old 06-23-2010, 10:14 AM Thread Starter
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Engine Cleaning... Advice!

So its that time of year, the weather is nice and im getting tired of having a dirty engine bay. Any one have any advice on a great way to clean my engine? Ive read on other sites to use 303 Aero space protectant or something called CD2? Cover my battery terminals, and other exposed electrical things. let it sit for a bit then wash off w/ warm-hot water? anything else im missing.

thanks
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post #2 of 15 Old 06-23-2010, 11:55 AM
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Cover your alternator, exposed harasses, battery, etc. Aluminum foil is nice since it contours to the shape, but just don't be dumb and short your battery terminals.

I'd pick up some P21S engine cleaner. Spray on a cool, dry engine bay. Let it soak, scrub up with a brush. Rinse off. Best stuff I've used. Towel dry. Then dress up the vinyl, plastic and rubber, with some 303 Aerospace Protectant.

Engine bay will look like it just rolled off the show room floor.

Jon
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RIP Colin McRae
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post #3 of 15 Old 06-23-2010, 01:58 PM Thread Starter
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awesome! thanks
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post #4 of 15 Old 06-23-2010, 01:59 PM
 
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Once clean, it easy to keep that way. I blast mine at the car wash regularly, just high pressure rinse (no soap) and have never needed to cover anything electrical. Just be aware of where you are concentrating the pressure, and give your vacuum lines and and wiring connections a quick visual check before you drive away. I've heard of people cracking their turbo housings, and you should avoid spraying it with water when hot, but I've been spraying my engine bay for years with no issues.

A clean bay rewards you with a huge feeling of satisfaction, well worth the work
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post #5 of 15 Old 06-25-2010, 04:00 PM Thread Starter
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I agree. having a clean car inside and out just makes you feel better about it. even if no one knows it but you. like making your bed every morning.
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post #6 of 15 Old 06-29-2010, 08:09 AM
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I've always made sure the engine bays on my cars are clean. The way i went about it was to warm my engine up to make the grease/grime easier to remove and spray the engine with a 50/50 mix of simple green and water. Let soak for a few minutes(scrub with sponge where needed) and spray off, making sure not to spray directly on alternator and other major electrical areas. If you do choose to use a high pressure sprayer, make sure you don't blast it near any electrical. (I have had a few times where the water penetrated where i didn't want it to). Dry motor with towel (i use a leaf blower, then towel). Then dress with an appropriate dressing. i have always had compliments on how clean i keep my engine. It surprises me by how many people don't bother to clean their engine bay.
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post #7 of 15 Old 06-29-2010, 10:13 AM
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I believe I read somewhere that Simple Green (the common green variety) can corrode aluminum. I think it's probably not really an issue if you rinse it off right away and don't use it very often. I also think there's a different variety of Simple Green (maybe blue?) that's chemically safe for aluminum parts.

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post #8 of 15 Old 06-29-2010, 12:34 PM
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John you are correct. But like you also mentioned if you dont let it soak or penetrate the metal you will be fine. I use it on my aircraft parts and tools for work, and have always used it on my rims. Nothing bad has happened (yet).

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post #9 of 15 Old 06-29-2010, 04:35 PM
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I used foaming engine brite just spray it on twice a year to a cold engine let it soak for ten minutes rince it off with lots of water
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post #10 of 15 Old 06-29-2010, 05:19 PM
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I just grabbed a $5 bottle of degreaser from AutoZone. I think it was called Purple Power.

I used tinfoil over the alternator, and plastic bags over the intake, oil press. sender and boost pressure sender.

I let the cold engine idle for about 5 minutes to get a little heat in it, then sprayed it with degreaser, brushed a few areas and hosed it off. I used a leaf blower to dry it and then drove it around the block for a while.

Then I put some Turtle Wax ICE interior protection on all the plastic and hoses with a sponge paint brush.

Now for the best part, the results...


2005 WRX Cobb Stage 2
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post #11 of 15 Old 06-30-2010, 10:00 AM
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looks great!

Jon
"We live for a good time, not a long time."
RIP Colin McRae
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post #12 of 15 Old 07-01-2010, 08:14 PM
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You guys got me in the mood to spiff mine up! His intercooler looks so clean though
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355 awhp fp green six speed wagon in Corvette Atomic Orange
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post #13 of 15 Old 07-01-2010, 10:35 PM
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wow, looks great. I've been one up'd. I will gladly trade you intercoolers.

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post #14 of 15 Old 07-01-2010, 11:32 PM
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That's one patriotic engine bay you've got there... just in time for the 4th too

John
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post #15 of 15 Old 07-02-2010, 10:42 AM
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Lol, thanks. It's nice to finally have a car where I'm proud to pop the hood for people

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