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Old 04-21-2010, 07:50 PM   #1
davericher20
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sandblasting intake manifold?

Hey guys, the starter is dead so I have to pull the manifold and I figure while I have it out I might have the opportunity to get my intake sandblasted at work. We engrave urns and I might be able to slip the guy a few bucks to do it for me.

Is this frowned upon? Will it damage the emblem?
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Old 04-21-2010, 08:44 PM   #2
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i would think its a great idea.
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Old 04-21-2010, 09:13 PM   #3
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You don't need to pull the intake to do the starter! You need to have mutant arms but it's possible.
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Old 04-22-2010, 12:27 AM   #4
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Quote:
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You don't need to pull the intake to do the starter! You need to have mutant arms but it's possible.
This is the truth. and some funky wrenches.

But if your intake mani is ugly, they are cheap. Get a spare one, clean it up, paint it or whatever, then its ready for when you take your other one off.
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Old 04-22-2010, 01:58 AM   #5
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I got a spare, then prepped and swapped it. I scrubbed it with soap and a stainless brush for about an hour. It came out looking spectacular. I then proceeded to paint it black, but could have left it as it if it were not for the oxide being apt to return.

Edit: the bugger with most intakes is the wear mark caused by the hood insulation. Almost every e30 "I" intake has it, it seems. You can easily see it in the pics. Paint didn't make it disappear either.

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I took something like this:


Soaked it in my sink with tide, scrubbed it, wiped it, rubbed it, and brushed it until this happened:


And found this underneath:


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Old 04-22-2010, 11:46 AM   #6
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Quote:
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Edit: the bugger with most intakes is the wear mark caused by the hood insulation. Almost every e30 "I" intake has it, it seems. You can easily see it in the pics. Paint didn't make it disappear either.
+1.

I put my hood insulation back on for one summer, marked up my intake in two spots, pissed me right off, so I took it off again! Be gone!!
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Old 04-22-2010, 06:18 PM   #7
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I would think sandblasting is a little harsh, try soda blasting and the surface might not get as pitted, even glass bead is less abrasive, I have done some parts myself with compressor and a cheap blast handle from princess auto.
The broken wire brushes and that method brings back fond memories though.
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Old 04-23-2010, 11:11 PM   #8
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i cleaned it with diesel inside out.. and then power washed it... works wonders. and the amount of oil and gunk that came out of it was unbelievable.

now it looks good black..
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Old 04-25-2010, 12:30 PM   #9
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I do have an extra intake manifold... I'm thinking about doing that now... is there any differences between and E and I? I'm not sure which one my spare one came out of... I think its an E, and I currently drive an "I"...

hmm...
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Old 04-25-2010, 12:59 PM   #10
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Yes, E and I are different and not cross compatible. They're easily identifiable visually, so if you're mani looks identical, its probably the same.
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Old 04-25-2010, 04:45 PM   #11
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Sounds good, as soon as I dig it out, I'll compare the two...

Thanks,
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Old 04-25-2010, 10:52 PM   #12
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Quote:
Originally Posted by everlast View Post

Edit: the bugger with most intakes is the wear mark caused by the hood insulation. Almost every e30 "I" intake has it, it seems. You can easily see it in the pics. Paint didn't make it disappear either.
This wasn't familiar to me so I just went to check the 3 manis I have in the garage and none of them have that mark. But they are all from IXes, very curious.
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Old 04-26-2010, 01:47 AM   #13
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This wasn't familiar to me so I just went to check the 3 manis I have in the garage and none of them have that mark. But they are all from IXes, very curious.
Yeah I'm curious too, the only indication to me is the hood insulation being eroded. nothing on the manifold itself. What kind of mark are you talking about?
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Old 04-26-2010, 02:38 AM   #14
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Look at the pictures I posted. You can see the nickel sized spot on cylinder runner #1. Those are two different manis in the pics. My other '90 had it too, all M20b25 motors.
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Old 04-27-2010, 11:13 AM   #15
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I wire-brushed, and wet-sanded mine... till it was smooth.

Everlast throw some high heat clear on that, I'm redoing mine and that's what I'm going to do.
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