How do you epoxy carbon fiber?

[Arith2]

As you know, the first gen Turner boxes came damaged. Well, I think they can be repaired, but I'm not quite sure what epoxy to use. I figured someone on here has to know some way to fix a broken CSL box. So far, the only damage I know about is the breather tube connection from the oil separator breaking off. The ideal fix would be no chucks of epoxy entering my cylinders after a short period. I'm not too worried about the connector. If I have to patch it instead, and oil catch can will be plan B and I'll just vent it.

Did any of you fix the Turner box instead of return it?

What type of epoxy should I use that will stick to the resin?

Alternative ideas are welcome besides ditching the box. I'm definitely keeping it for the time being.

[bigjae46]

Use a laminating epoxy. You mix the epoxy with a hardener and then you have a certain amount of working time before it gels.

You will likely want some reinforcement - carbon fiber fabric.


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[EnzoAtMonza]

I used jb weld to fix all my connectors, I removed/replaced all of the connectors after I lost 2 in shipping and 1 during test fit. I wanted something that would not flake off or be super brittle like the blue adhesive they used and it is sandable after cure so you can remove any potential debris. They have withstood 4-5 removals at this point with the mods needed for the v1 fitup
Jeff

[Cubieman]

This is something you could get locally that says it works on carbon fiber composites.

https://www.lowes.com/pd/JB-Weld-Plastic-Bonder-Brown-Epoxy-Adhesive/1000820860?cm_mmc=shp-_-c-_-prd-_-pnt-_-google-_-lia-_-221-_-glue-_-1000820860-_-0&store_code=1184&placeholder=null&ds_rl=1286981&gclid=Cj0KCQiA0fr_BRDaARIsAABw4Ev1GxWwtYJ4-3lEzdAV6fMrI2JtED_tVey8mEZ9b4t_wRG2323QFscaAhe1EALw_wcB&gclsrc=aw.ds

[Arith2]

JB Weld might be the way to go. I never thought I'd say that seriously. Usually it's a temporary fix.

This is something you could get locally that says it works on carbon fiber composites.

https://www.lowes.com/pd/JB-Weld-Pla...B&gclsrc=aw.ds

The only issue I would have is that brown color it will turn. Not sure how to make it not look like a turd even though that seems to be the right stuff. Our intakes are just big pieces of plastic.

[Icecream]

JB Weld might be the way to go. I never thought I'd say that seriously. Usually it's a temporary fix.



The only issue I would have is that brown color it will turn. Not sure how to make it not look like a turd even though that seems to be the right stuff. Our intakes are just big pieces of plastic.

Try a marine supply store. They should have a selection of good, clear epoxy that would work.

[Arith2]

Try a marine supply store. They should have a selection of good, clear epoxy that would work.

If it'll work on fiberglass, it'll work on carbon fiber. I'll start looking. People like to fish and hunt around this area so I'm sure I could find something easily.

[bigjae46]

If it'll work on fiberglass, it'll work on carbon fiber. I'll start looking. People like to fish and hunt around this area so I'm sure I could find something easily.

Not really. You want to stay away from polyester resins.

Has to be epoxy compatible. So if you’re bonding a metal fitting to carbon, you likely want a urethane or epoxy adhesive.


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[timmo]

I'm not super-familiar with what the actual issue is, but if it's just metal inserts cleanly disbonding from the carbon with no actual damage, something like 3M DP400 series of epoxy adhesives would work. If there's actual significant damage to the carbon then you may have to buy carbon fabric and epoxy resin, then do an in-situ wet layup on the box

[Arith2]

I'm pretty sure the fitting that broke off is plastic. It's where CCV tube dumps its crap into the intake. I haven't recieved the box yet but I saw pictures of the damage. The hole looks very circular so that's hopeful

[Cubieman]

On my Turner box the fitting broke off during shipping and if I remember correctly it is a metal piece just like on other CSL style boxes. It broke off very cleanly and could be easily slotted right back where it was before, in that case just some epoxy would have been suitable.

[elbert]

JB Weld might be the way to go. I never thought I'd say that seriously. Usually it's a temporary fix.

I used to feel the same, but I've used the regular JB Weld in a few small household repairs, and it actually works quite well.

If you call JB Weld a "steel reinforced 2 part epoxy" (which is exactly what it is), I think it would have more acceptance. At least that's the logic I used to convince myself...

[ATB88]

To the person complaining about the JB weld being brown, it comes in different colours. I found it in black at my local oreillys.

Tougher question: how would one try and cosmetically repair a gouge in the clearcoat/epoxy/whateveritis from the box rubbing on the cabin air filter housing? Is such a thing possible, or at least, do-able at a reasonable price/effort relative the value of the box? I know nothing about CF, so not sure if that kind of cosmetic damage is an "it is what it is" situation, or if it can actually be made to look new-ish again for, say, $100-$200?

[Icecream]

To the person complaining about the JB weld being brown, it comes in different colours. I found it in black at my local oreillys.

Tougher question: how would one try and cosmetically repair a gouge in the clearcoat/epoxy/whateveritis from the box rubbing on the cabin air filter housing? Is such a thing possible, or at least, do-able at a reasonable price/effort relative the value of the box? I know nothing about CF, so not sure if that kind of cosmetic damage is an "it is what it is" situation, or if it can actually be made to look new-ish again for, say, $100-$200?

Is it gouged or just marred? It can probably just be polished with normal compounds if the carbon is not exposed. I also don't see a problem filling a gouge with high quality epoxy (carbon envisions is where I got my stuff from for a different project).

[Slideways]

To the person complaining about the JB weld being brown, it comes in different colours. I found it in black at my local oreillys.

Tougher question: how would one try and cosmetically repair a gouge in the clearcoat/epoxy/whateveritis from the box rubbing on the cabin air filter housing? Is such a thing possible, or at least, do-able at a reasonable price/effort relative the value of the box? I know nothing about CF, so not sure if that kind of cosmetic damage is an "it is what it is" situation, or if it can actually be made to look new-ish again for, say, $100-$200?

If it is deep enough, a clear epoxy should work; otherwise, isolate the spot, spray some clearcoat and finish with wetsand/polish to blend.