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View Full Version : a bit of roadster aluminum polishing and a bit of f150 4.6 trouble



OttawaFFRer
06-12-2011, 07:34 PM
I'd love to show you all amazing pics of my progress since coming home but it's simply pathetic...

First the good:

1. My front suspension is almost installed, I finished grinding my front spindles to fit the adapter and hit them with a fresh coat of glossy black tonight, I should get those on tomorrow once I track down some new fasteners.

I had painted the spindles before realizing they weren't going to fit the adapter. That might have been in the donor portion of the manual but I'm not sure, other than spindles I'm not really doing a donor build.

--things I've learned: FFR spacers are nice but should be delivered in 1 foot lengths so we can cut to required. I wasn't happy with the result of grinding them down to fit so I purchased spacer washers.

2. Polishing Aluminum and sharkhide: LOL Oh my God what fun I had today! I decided I'd polish an F panel for the hell of it. Started with a polish/buff kit sold at Canuck Tire (I'm sure sears has the same one) in both an 18v dewalt and an air drill-->result-->not enough power or I'm not doing it right.
I had seen a video online of a guy polishing aluminum with an angle grinder, which I have a few of, so off I went to get the polish pad for that-->result, less work, quick, looked good-->picked up 2 different compounds also, a cut and a buff.
At the end of that I looked like a coal miner!

Finished it to be great on one side and good on the other, scratches.

Hit it with sharkhide-->cotton diaper around, NO. grabbed a dish cloth and away I went-->scratched the hell out of it.

Back to square one on that.
<<--------------------------------------->>
The BAD.

On my way back from picking up good old 7502 from Mass I noticed a loss of power and misfire in the old f150 4.6 mod powered. Normal enough to me, misfires in 4.6 on a rainy day is par for the course. It did get a bit worse once I hit a few hills, 4500 rpm for 5 minutes at a time. Seemed like I was down to firing on 6 cylinders for a bit there, which again, is normal for a 4.6 in a rainstorm (you should see how much performance can drop in slush), but we made it home.

The truck was running really bad ever since, swapped out 3 coil overs (didn't pull plugs at first because the engine was hot and pulling plugs on a hot 4.6 is begging for trouble), but not better. I could feel that the intake tube on number 3 was running hot, pulled the plug...melted. burnt through #3 intake valve and piston damage. 35lbs compression.

Guess who gets to do an engine swap this week in his spare time. I'd dump the truck but who would pick up all my neighbors stuff without it?

Advice required: aluminum polish, sharkhide application...and everything else!

If you want a bunch of pics of a terrible polish job, spacer washers, or just random photos of my front lawn, just ask...

Cheers,
Vic

Mustang Man
06-12-2011, 07:36 PM
I want to see pics of the carnage in your 4.6! :p

OttawaFFRer
06-12-2011, 08:04 PM
spark plug

http://i753.photobucket.com/albums/xx175/ottrunner/sparkplug.jpg

efnfast
06-12-2011, 09:00 PM
How to polish aluminum (the images are gone, but the text works just fine)

http://www.ffcars.com/forums/109-helpful-build-tips-tricks/198165-how-polish-aluminum-how-make-shiny-shiny.html

Honestly, I Wouldn't do it, not worth it. And the scratches arn't really scratches you're seeing (unless you're doing something really wrong) - aluminum is soft, very, very, very soft. Polished, it could be perfectly clean and I could wipe it with a soft microfiber and find micromarring all over it. (what you are probably describing as scratching - micromarring are basically scratches you can see but not feel)

If you want my advice, give up on polishing them, powdercoat them silver vein - silver vein looks good, hides everything (I can scratch it with my key all day long and not find any damage on it), and is cheap and easy to do.

My RCR is all aluminum everywhere - chassis, control arms, mounting brackets, etc.. etc..., yet "oddly" I don't have 1 polished piece on there. Hmmm, I wonder why!

OttawaFFRer
06-12-2011, 09:13 PM
I am considering options efnfast. We are talking about microscratches, but lots of them. The hand towel I used to apply the sharkhide seems to have an abrasive in it.

imagine how badly that turned out.

I may go with powder coating, but I want a mirror finish. We all have these foolish dreams!
Did I mention I spent probably 2 hours on that panel? It really did look good prior to the sharkhide.

I'm not sure if I'm able to identify every panel that needs to be 'processed'. Is any of the aluminum that comes boxed rather than installed visible under the hood?

MPTech
06-13-2011, 12:28 AM
Hey Ottawa,
Glad to see you're making progress, keep at it!

I've been trying to decide how I want to finish my engine panels as well, I've read that even if you do a great polish job, the sharkhide dulls it up a bit. For that reason, I was just planning to clean them up and give it a Scotchbrite treatment, then the Sharkhide. This will give it that Alum panel look and protect it. But the downside there is I heard it needs to be retreated every few years.
I would suggest to finish up some of the other work first, before finishing them because you'll mar them during the build.

Good luck with the build!

Someday I Suppose
06-13-2011, 09:18 AM
Listen to Alex on the polishing of panels, he was ummmmm obsessed???? with polishing panels on the roadster, man it is a ton of work, and it is something you will always see a swirl on. No one else will, but you will and it will drive you mad. (I am starting to see that with my black paint, I see everything lol.)

If you want to keep them aluminum, maybe go engine turned??? But if I were to do it again I would send them for powder and not think twice about it.

_Scott

efnfast
06-13-2011, 12:28 PM
I am considering options efnfast. We are talking about microscratches, but lots of them. The hand towel I used to apply the sharkhide seems to have an abrasive in it.

imagine how badly that turned out.

I may go with powder coating, but I want a mirror finish. We all have these foolish dreams!
Did I mention I spent probably 2 hours on that panel? It really did look good prior to the sharkhide.

I'm not sure if I'm able to identify every panel that needs to be 'processed'. Is any of the aluminum that comes boxed rather than installed visible under the hood?

Like I said, any type of towel, even the softest microfiber, will marr polished aluminum.

Sharkhide tends to bring out the imperfections and make them more visible, so it isn't surprising to me what you're describing.

The fact is, the only way a huge polished aluminum piece will look to the eye (i.e., no marring) is if you polish it with a cyclo (by hand will leave marring) and then never eeeeeever touch it again. Not to sharkhide, it not wipe it down, not to do anything with it.

I polished my entire trunk, then said f-it and powerdercoat/carpetted it and havn't looked back since.

http://i708.photobucket.com/albums/ww89/efnfast/trunk8.jpg
http://i708.photobucket.com/albums/ww89/efnfast/trunk4.jpg
http://i708.photobucket.com/albums/ww89/efnfast/trunk6.jpg
http://i708.photobucket.com/albums/ww89/efnfast/trunk7.jpg