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numnum59
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Registered: 12/07/11
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Anodizing
#19378783 - 01/06/14 07:04 PM (10 years, 24 days ago) |
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has anyone ever anodized aluminum before? im rebuilding an engine and would like to anodize some of the exterior bolts for asthetics. any help would be greatly appreciated!
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r00tuuu123
Now I'm just really piseed



Registered: 04/20/12
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There are only a few places that aluminum bolts are practical/safe why not just buy them pre-anodized or better yet just get the steel bolts powder coated Once you put a wrench to an anodized bolt more than likely it's going to get marked up.
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numnum59
Pro-Am Mycologist


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maybe, i honestly think both would work but the anodizing would be cheaper if i could do it at home. the aluminum bolts will be fine for holding the timing chain covers on, i will look into powder coating. i used to work at a powder coat shop, the bolts would chip if you put a wrench on em sometimes. i thought you could seal the anodize in the bolt?
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Guy1980
Registered: 09/11/12
Posts: 723
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Powder is less durable than anodizing, by far. I definitely wouldn't powder coat bolt heads. Anodizing is like a conversion coating, which means it's effectively colouring the aluminium.
You can buy home anodizing kits for not much money, but unless you're looking to do it as a hobby it would probably be more cost effective to send your bolts off to be anodized (or buy anodized bolts).
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r00tuuu123
Now I'm just really piseed



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Re: Anodizing [Re: Guy1980]
#19391430 - 01/09/14 12:24 AM (10 years, 22 days ago) |
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Quote:
Guy1980 said: Powder is less durable than anodizing, by far. I definitely wouldn't powder coat bolt heads. Anodizing is like a conversion coating, which means it's effectively colouring the aluminium.
You can buy home anodizing kits for not much money, but unless you're looking to do it as a hobby it would probably be more cost effective to send your bolts off to be anodized (or buy anodized bolts).
Yea that's all well and good but a grade 8 bolt is way tougher than an aluminum bolt. But if you wanna use anodized and do not have to deal with torque specs I can see putting duct or electrical tape on the heads to run them in.
i
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Guy1980
Registered: 09/11/12
Posts: 723
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I was taking it as a given that alu bolts would only be used where appropriate. I mean, if OP wants to use alu bolts to bolt his head on because they're prettier, then figuring out how best to make them pretty is the least of his worries (or will be shortly after turning the engine).
But for valve covers/cam covers etc. aluminium will be fine.
I guess chromed would be the way to go for when steel bolts are needed.
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numnum59
Pro-Am Mycologist


Registered: 12/07/11
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Quote:
r00tuuu123 said:
Quote:
Guy1980 said: Powder is less durable than anodizing, by far. I definitely wouldn't powder coat bolt heads. Anodizing is like a conversion coating, which means it's effectively colouring the aluminium.
You can buy home anodizing kits for not much money, but unless you're looking to do it as a hobby it would probably be more cost effective to send your bolts off to be anodized (or buy anodized bolts).
Yea that's all well and good but a grade 8 bolt is way tougher than an aluminum bolt. But if you wanna use anodized and do not have to deal with torque specs I can see putting duct or electrical tape on the heads to run them in.
i wouldnt be doing it on anything that "needs" to be torqued, only on the timing cover and valve cover
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