# Plastic Epoxy??? **URL:** \ **Category:** NYSpeed Automotive\ **Created:** [May 18, 2006, 5:52pm UTC](https://forums.speedlife.net/t/plastic-epoxy/12236 "2006-05-18T17:52:16Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![Fry](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fry/32/7284_2.png) [@Fry](https://forums.speedlife.net/u/Fry)\ **Post date:** [May 18, 2006, 5:52pm UTC](https://forums.speedlife.net/t/plastic-epoxy/12236/1 "2006-05-18T17:52:16Z")
So I replaced my alternator, according to [this](http://forums.vwvortex.com/zerothread?id=2455185) procedure. It really wasn’t that bad. Took maybe 3 hours, only because I spent a good amount of time trying to get the alt out without taking the frame/radiator assembly off. So how to I fix my radiator? While trying to pull off the upper radiator hose, the goddam thing broke off. So yes, this is a main coolant tube. Do I have a snowball’s chance in hell of epoxying it back and having it seal and hold up to the heat? If so, what epoxy and how do you recommend I do it? Please help, I do not want to have to replace the radiator because I didn’t pull straight back. :ham: ![http://i17.photobucket.com/albums/b76/BikerFry/broke001.jpg](http://i17.photobucket.com/albums/b76/BikerFry/broke001.jpg) ![http://i17.photobucket.com/albums/b76/BikerFry/broke003.jpg](http://i17.photobucket.com/albums/b76/BikerFry/broke003.jpg) ![http://i17.photobucket.com/albums/b76/BikerFry/broke002.jpg](http://i17.photobucket.com/albums/b76/BikerFry/broke002.jpg) ---
**Author:** ![Locutus](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/locutus/32/7574_2.png) [@Locutus](https://forums.speedlife.net/u/Locutus)\ **Post date:** [May 18, 2006, 5:59pm UTC](https://forums.speedlife.net/t/plastic-epoxy/12236/2 "2006-05-18T17:59:11Z")
more important - your pink graumai (sp) needs some water there champ 😛 ---
**Author:** ![97FormulaWS-6](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/97formulaws-6/32/7384_2.png) [@97FormulaWS-6](https://forums.speedlife.net/u/97FormulaWS-6)\ **Post date:** [May 18, 2006, 6:34pm UTC](https://forums.speedlife.net/t/plastic-epoxy/12236/3 "2006-05-18T18:34:55Z")
The only stuff that I can think of that will work is stuff that they use at body-shops to repair plastic parts. It’s honestly the only thing I can think of that will hold up the temps and pressures reliably. I don’t remember exactly what it is, only that it comes in the dual-tube cartriges, is black, and applys with one of the mixing tips… other than that I don’t know exactly, can have exact information on Sat. ---
**Author:** ![Fry](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fry/32/7284_2.png) [@Fry](https://forums.speedlife.net/u/Fry)\ **Post date:** [May 18, 2006, 6:40pm UTC](https://forums.speedlife.net/t/plastic-epoxy/12236/4 "2006-05-18T18:40:08Z")
If you think of it please post it up. ---
**Author:** ![turbociv](https://avatars.discourse-cdn.com/v4/letter/t/dfb087/32.png) [@turbociv](https://forums.speedlife.net/u/turbociv)\ **Post date:** [May 18, 2006, 7:00pm UTC](https://forums.speedlife.net/t/plastic-epoxy/12236/5 "2006-05-18T19:00:06Z")
plastic weld is what me and 93dxhatch used on our radiators and they held up fine. ---
**Author:** ![Fry](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fry/32/7284_2.png) [@Fry](https://forums.speedlife.net/u/Fry)\ **Post date:** [May 18, 2006, 7:18pm UTC](https://forums.speedlife.net/t/plastic-epoxy/12236/6 "2006-05-18T19:18:23Z")
I’ve heard of Plastic Weld. Where do you get it? ---
**Author:** ![nitroinsane](https://avatars.discourse-cdn.com/v4/letter/n/d26b3c/32.png) [@nitroinsane](https://forums.speedlife.net/u/nitroinsane)\ **Post date:** [May 18, 2006, 7:20pm UTC](https://forums.speedlife.net/t/plastic-epoxy/12236/7 "2006-05-18T19:20:40Z")
it wont work. to much pressure ---
**Author:** ![turbociv](https://avatars.discourse-cdn.com/v4/letter/t/dfb087/32.png) [@turbociv](https://forums.speedlife.net/u/turbociv)\ **Post date:** [May 18, 2006, 7:27pm UTC](https://forums.speedlife.net/t/plastic-epoxy/12236/8 "2006-05-18T19:27:26Z")
like i said, it worked fine for me and others. You can get it at pep boys, its a 2 part epoxy. However it might not work so this is my disclaimer. its a 5 dollar shot. ---
**Author:** ![Fry](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fry/32/7284_2.png) [@Fry](https://forums.speedlife.net/u/Fry)\ **Post date:** [May 18, 2006, 7:34pm UTC](https://forums.speedlife.net/t/plastic-epoxy/12236/9 "2006-05-18T19:34:54Z")
I think I’ll give it a whirl. I don’t have much to lose, so unless I find something more likely to work then I’ll try plastic weld. I figure I’ll clean both parts with a grease cutting dish soap/water, then rinse really well and let dry. Then apply the stuff according to the directions and let cure for 24-48 hours before I fill the system and fire up the car. Any other suggestions? ---
**Author:** ![turbociv](https://avatars.discourse-cdn.com/v4/letter/t/dfb087/32.png) [@turbociv](https://forums.speedlife.net/u/turbociv)\ **Post date:** [May 18, 2006, 8:06pm UTC](https://forums.speedlife.net/t/plastic-epoxy/12236/10 "2006-05-18T20:06:00Z")
scuff/prep the surface also ---
**Author:** ![Fry](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fry/32/7284_2.png) [@Fry](https://forums.speedlife.net/u/Fry)\ **Post date:** [May 18, 2006, 8:32pm UTC](https://forums.speedlife.net/t/plastic-epoxy/12236/11 "2006-05-18T20:32:08Z")
Got it. Scuff/prep the surface and water the gourami… ---
**Author:** ![Haenszel](https://avatars.discourse-cdn.com/v4/letter/h/e68b1a/32.png) [@Haenszel](https://forums.speedlife.net/u/Haenszel)\ **Post date:** [May 18, 2006, 10:56pm UTC](https://forums.speedlife.net/t/plastic-epoxy/12236/12 "2006-05-18T22:56:41Z")
JB weld holds up on my hydro-clutch line just fine 😉 ---
**Author:** ![Fry](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fry/32/7284_2.png) [@Fry](https://forums.speedlife.net/u/Fry)\ **Post date:** [May 19, 2006, 6:29am UTC](https://forums.speedlife.net/t/plastic-epoxy/12236/13 "2006-05-19T06:29:04Z")
I may try this, but it’s only rated to 250_F. The temperature of my coolant is normally 190_F, so that doesn’t leave a lot of room for error… [http://www.devcon.com/devconfamilyproduct.cfm?familyid=310&catid=26](http://www.devcon.com/devconfamilyproduct.cfm?familyid=310&catid=26) I may try a JB Weld Product. Good to 500\*F. I’m torn between Waterweld, Marineweld, or just good old fashioned JBWeld… [http://jbweld.net/products/index.php](http://jbweld.net/products/index.php) ---
**Author:** ![Dr.Stevil](https://avatars.discourse-cdn.com/v4/letter/d/da6949/32.png) [@Dr.Stevil](https://forums.speedlife.net/u/Dr.Stevil)\ **Post date:** [May 19, 2006, 9:01am UTC](https://forums.speedlife.net/t/plastic-epoxy/12236/14 "2006-05-19T09:01:31Z")
When I modified the intake on my lincoln (it was made of hard plastic) I used some epoxy I found at NAPA… it was good up to something crazy like 600 psi and temps up to 1200\* (I think… this was a few years back… but it was some serious shit)… or was it the other way around? (1200 psi and 600\*?) all in all, in the end… the epoxy held up EXTREMELY well (hell, I’d put 100.00 down that you’d be able to destroy the plastic before even putting a dent in the epoxy area). go to NAPA and ask them for some high temp epoxy… they have a bunch of different kinds for different needs. (I ended up grabbing the highest rated ish just to be safe) edit: use a dremmel for trimming it down though lol… sand paper wont even scratch it. I found that layering it works well too ---
**Author:** ![Fry](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fry/32/7284_2.png) [@Fry](https://forums.speedlife.net/u/Fry)\ **Post date:** [May 19, 2006, 11:23am UTC](https://forums.speedlife.net/t/plastic-epoxy/12236/15 "2006-05-19T11:23:38Z")
I went with JB Weld. It’s curing now. Properties (psi) Tensile Strength: 3960 Adhesion: 1800 Flex Strength: 7320 Tensile Lap Shear: 1040 Shrinkage: 0.0% Resistant to: 500° F Good to 500_F, when I’ve never seen my water over 190_F. Can’t argue with strength’s on the order of ksi. I have a feeling that stuff will work fine, and whether or not it works is dependent on my own skill. I’m looking for some sort of sealant overlay now, to apply tomorrow. I think loc-tite makes something… ---
**Author:** ![Fry](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fry/32/7284_2.png) [@Fry](https://forums.speedlife.net/u/Fry)\ **Post date:** [May 21, 2006, 9:53am UTC](https://forums.speedlife.net/t/plastic-epoxy/12236/16 "2006-05-21T09:53:10Z")
New radiator time. Oh well, at least now I won’t have to worry about that breaking/rotting over the next 100k… Notice the wet line below the connection? That means my hose will blow off once it’s been at operating temp/pressure for long. :ham: ![http://i17.photobucket.com/albums/b76/BikerFry/broke.jpg](http://i17.photobucket.com/albums/b76/BikerFry/broke.jpg) ---
**Author:** ![Fry](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fry/32/7284_2.png) [@Fry](https://forums.speedlife.net/u/Fry)\ **Post date:** [May 21, 2006, 11:02am UTC](https://forums.speedlife.net/t/plastic-epoxy/12236/17 "2006-05-21T11:02:35Z")
Haha I’m getting pretty good at this. It only took me an hour to go from fully assembled to radiator out of the car. ![http://i17.photobucket.com/albums/b76/BikerFry/radiator.jpg](http://i17.photobucket.com/albums/b76/BikerFry/radiator.jpg) Hank I’ll call you Monday morning and have you order it for me. :tup: ---
**Author:** ![nitroinsane](https://avatars.discourse-cdn.com/v4/letter/n/d26b3c/32.png) [@nitroinsane](https://forums.speedlife.net/u/nitroinsane)\ **Post date:** [May 22, 2006, 10:48am UTC](https://forums.speedlife.net/t/plastic-epoxy/12236/18 "2006-05-22T10:48:12Z")
i was right woo hoo ---
**Author:** ![Maksim2000](https://avatars.discourse-cdn.com/v4/letter/m/dec6dc/32.png) [@Maksim2000](https://forums.speedlife.net/u/Maksim2000)\ **Post date:** [May 22, 2006, 11:03am UTC](https://forums.speedlife.net/t/plastic-epoxy/12236/19 "2006-05-22T11:03:19Z")
German radiators suck… mine blew up at innovative on the dyno at the same spot yours did… power of plastics ---
**Author:** ![Fry](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fry/32/7284_2.png) [@Fry](https://forums.speedlife.net/u/Fry)\ **Post date:** [May 22, 2006, 12:31pm UTC](https://forums.speedlife.net/t/plastic-epoxy/12236/20 "2006-05-22T12:31:30Z")
> [@Maksim2000](#): > > German radiators suck… mine blew up at innovative on the dyno at the same spot yours did… power of plastics Really? Any likely cause? Mine just broke because I pulled with all my massive strength trying to seperate the coupler and shit broke. [Next page](https://forums.speedlife.net/t/plastic-epoxy/12236.md?page=2)