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Old 09-19-2010, 10:19 PM   #1
Beachcomber
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Unhappy Is this intake toast?

I bought this intake and it has pitting on the water passage areas.
Can it be fixed or is it toast?
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Last edited by LockDoc; 04-04-2023 at 10:38 AM.
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Old 09-19-2010, 10:44 PM   #2
Pop's C-10
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Re: Is this intake toast?

she'll live..it's jus surface stuff..prime..sand..paint
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Old 09-19-2010, 11:46 PM   #3
hchad18
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Re: Is this intake toast?

Nothing wrong with that. Run it.
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Old 09-19-2010, 11:47 PM   #4
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Re: Is this intake toast?

Not so sure I agree with just surface pitting. I see some pretty substantial erosion and corrosion. These often form pockets and cavities under the surface that will prevent a good seal of the h2o passages.
Any auto machine shop should be able to tig up the areas and resurface. Edelbrock performers aren't all that expensive, so you could rapidly reach the value of the manifold in labor costs.
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Old 09-19-2010, 11:58 PM   #5
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Re: Is this intake toast?

I have one that was corroded almost all the way through. It ran up until I pulled it and noticed the corrosion. Put it on, use sealer around the water passages, if it leaks then buy a new one.
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Old 09-20-2010, 12:19 AM   #6
67chevy1series
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Re: Is this intake toast?

well i dont think thats toast i think it is swiss cheese
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Old 09-20-2010, 02:58 AM   #7
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Re: Is this intake toast?

If you need it to work a while longer, hit it with some jb weld. If you want it to last, I'd get a different intake.
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Old 09-20-2010, 07:15 AM   #8
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Re: Is this intake toast?

^^^

i agree, use jb weld and the sand it back flush.

i did that on a performer intake before, i had pitting around the thermostat housing. make sure you clean that surface really good with alcohol or some type of degreaser that will not leave a surface residue.

Last edited by dznucks; 09-20-2010 at 10:06 AM.
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Old 09-20-2010, 08:02 AM   #9
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Re: Is this intake toast?

A good job with JBweld and it should last forever. Just be careful not to sand into the aluminum or you may have sealing problems.
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Old 04-04-2023, 05:04 AM   #10
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Re: Is this intake toast?

Jb weld isn't a permenant fix , use it and deal with the leaks or do the right thing and buy new .
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Old 04-04-2023, 11:14 AM   #11
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Re: Is this intake toast?

Not sure I 100% agree with JB Weld not being permanent fix. I spoke with a guy who purchased a Saab I had in the 80's. I hit a manhole cover and pushed an incorrectly positioned skid plate cover bolt tip through a cast aluminum oil pan. Very pricey part. It took a couple attempts to get the epoxy to seal due to oil contamination of the prepared area. Nearly 40 years later and it's still holding. I just used some on a factory auxiliary fuel tank to seal my **** weld of a access hole I had to make. I believe it will be good for another 50 years. I would not hesitate to use JB on this intake. Build up the affected area. Sand flush at about 15-18 hours cure time. Don't wait too long or the epoxy will become as hard as the aluminum making it difficult to sand without taking off some of the machined surface of the manifold making a seal less probable. Then let the epoxy cure another 24 hours before install. If you find the seal not to be holding then go find a manifold suited for your use.
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Old 04-05-2023, 12:59 AM   #12
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Re: Is this intake toast?

I've seen major pitting on factory aluminum intakes where I have cleaned out the corrosion with picks and such--even ground them out with a die grinder bit and filled them with JB with no issues at all. Did this to a customers car about 8 years ago and they still come in for service--no leaks. I've even repaired an oil filter surface that got gouged with an air chisel trying to get an oil filer removed that was installed by a gorilla. No oil leaks
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Old 04-05-2023, 01:45 PM   #13
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Re: Is this intake toast?

If I was doing the repair with JB Weld I would clean the area with a wax and silicone remover followed by acetone. Once the cleaning is done heat the intake to 150 degrees and then spread the epoxy on. Heating intake opens up the pores slightly and it will heat the epoxy when you spread it on and allowing it to flow deep into the pores. After everything has cooled carefully sand the epoxy flush to surface.
Just my opinion and if you take that and $5 you might be able to buy a cup of coffee.
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