Fixing radiator shroud - The 1947 - Present Chevrolet & GMC Truck Message Board Network

psuedopimp · 08-17-2019, 11:12 AM

So a few years ago the top mounting ears were broken off of my radiator shroud. Now that the blazer is back on the road I need to either fix and reinstall or get a new shroud. Wondering if a plastic welder would work? Not sure what the shroud is made of.

**Grumpy old man** · 08-17-2019, 11:32 AM

Super glue and baking soda , I've used it to repair center consol cracks and a ton of other plastic parts .

https://www.youtube.com/watch?v=TTrVIXsLmmI

https://www.youtube.com/watch?v=alyzGrgL6So

psuedopimp · 08-17-2019, 12:15 PM

Thank you! Hopefully after the honey-dos, I can post pics after its fixed

**ohboy321** · 08-17-2019, 02:53 PM

I have the same issue and plan on using polypropylene strips and a heat gun to "weld" a replacement corner back on.

Found some good info on this site: https://www.polyvance.com/vista.php

I have the strips, but haven't found the time to do the job.

Barnfind46 · 08-17-2019, 06:04 PM

If you have a local body shop that uses the 3M Automix plastic repair it should take about 20 min. The stuff is a two part mix and you use an adhesion promoter on the surface. Sticks like it never broke!The stuff is a little pricey and you need an applicator gun but the shop would only use a small amount so they should not charge much. At my shop if someone came in with that I would just do it and say "Catch you next time."

toolboxchev · 08-18-2019, 01:45 PM

JB weld on mine, overlapping is important. Holds up to heat and other road crap.

If you want looks just overlap, sand and paint.

**Ironhorse** · 09-01-2019, 10:53 AM

I used a two part mix called PC-7 I got at Ace Hardware when I repaired my 4x4 shroud. The mount tabs were split/cracked and I used an piece from a salvage yard shroud cut to fit then liberally "glued" it with the PC-7. Been repaired for several years and no problem. Also used the PC-7 for a dash repair on my '71 Chevelle with another overlay. Still holding tight after several years. Just a thought, good luck with your repair.

psuedopimp · 09-01-2019, 03:15 PM

I ended up using the super glue and baking soda. Seems tough enough. Not pretty but has been on for a few trips to town and hasn’t broke yet

**dmjlambert** · 01-23-2021, 10:16 PM

This is the thread where I first heard about the super glue and baking soda trick from Grumpy old man. Both the top mounting ears were broken off of my radiator shroud and I finally got around to fixing it last weekend. Near the bottom of the shroud it had some minor broken up areas, and I removed a small piece of the plastic from there to make new ears. Super glue and baking soda, it sure is great. I've used it to repair a lot of stuff around the house and a few things on the truck.

08-17-2019, 11:12 AM	#1
psuedopimp Registered User Join Date: Jan 2009 Location: Las Cruces New Mexico Posts: 219	Fixing radiator shroud So a few years ago the top mounting ears were broken off of my radiator shroud. Now that the blazer is back on the road I need to either fix and reinstall or get a new shroud. Wondering if a plastic welder would work? Not sure what the shroud is made of. Attached Images __________________ Justin 1970 Blazer in progress

08-17-2019, 11:32 AM	#2
Grumpy old man Senior Member Join Date: Dec 2013 Location: Gods country East,Tn Posts: 8,545	Re: Fixing radiator shroud Super glue and baking soda , I've used it to repair center consol cracks and a ton of other plastic parts . https://www.youtube.com/watch?v=TTrVIXsLmmI https://www.youtube.com/watch?v=alyzGrgL6So __________________ 1967 Factory short bed - Old school '71 - 350 / 4bolt / 487 heads / Edelbrock C3BX Muncie M-22 4 speed / Hurst Comp plus Factory 12 bolt posi 3.73 / 255-70-15 Smoothed firewall / Factory cowl induction Power disc brakes / power steering / 3.5-5" drop Last edited by Grumpy old man; 08-17-2019 at 11:44 AM.

08-17-2019, 12:15 PM	#3
psuedopimp Registered User Join Date: Jan 2009 Location: Las Cruces New Mexico Posts: 219	Re: Fixing radiator shroud Thank you! Hopefully after the honey-dos, I can post pics after its fixed __________________ Justin 1970 Blazer in progress

08-17-2019, 02:53 PM	#4
ohboy321 Senior Member Join Date: Aug 2015 Location: Dunbarton, NH Posts: 288	Re: Fixing radiator shroud I have the same issue and plan on using polypropylene strips and a heat gun to "weld" a replacement corner back on. Found some good info on this site: https://www.polyvance.com/vista.php I have the strips, but haven't found the time to do the job.

08-17-2019, 06:04 PM	#5
Barnfind46 Registered User Join Date: Aug 2014 Location: Mena,Arkansas Posts: 485	Re: Fixing radiator shroud If you have a local body shop that uses the 3M Automix plastic repair it should take about 20 min. The stuff is a two part mix and you use an adhesion promoter on the surface. Sticks like it never broke!The stuff is a little pricey and you need an applicator gun but the shop would only use a small amount so they should not charge much. At my shop if someone came in with that I would just do it and say "Catch you next time." __________________ 68' with no bells or whistles unless I add'em.

08-18-2019, 01:45 PM	#6
toolboxchev Registered User Join Date: Jul 2015 Location: 2nd left past the stump on a dirt road. Posts: 2,629	Re: Fixing radiator shroud JB weld on mine, overlapping is important. Holds up to heat and other road crap. If you want looks just overlap, sand and paint.

09-01-2019, 10:53 AM	#7
Ironhorse Senior Member Join Date: Jul 2001 Location: Wellington, Ks Posts: 10,301	Re: Fixing radiator shroud I used a two part mix called PC-7 I got at Ace Hardware when I repaired my 4x4 shroud. The mount tabs were split/cracked and I used an piece from a salvage yard shroud cut to fit then liberally "glued" it with the PC-7. Been repaired for several years and no problem. Also used the PC-7 for a dash repair on my '71 Chevelle with another overlay. Still holding tight after several years. Just a thought, good luck with your repair. __________________ 1971 Chevy 1/2T 4x4 LWB 350 V-8 Was sm465-now 350TH/np205 Tilt, Tach, Towhooks Original Truck AM/FM Wellington, Ks

09-01-2019, 03:15 PM	#8
psuedopimp Registered User Join Date: Jan 2009 Location: Las Cruces New Mexico Posts: 219	Re: Fixing radiator shroud I ended up using the super glue and baking soda. Seems tough enough. Not pretty but has been on for a few trips to town and hasn’t broke yet __________________ Justin 1970 Blazer in progress

01-23-2021, 10:16 PM	#9
dmjlambert Senior Member Join Date: Apr 2016 Location: Cypress, TX Posts: 3,899	Re: Fixing radiator shroud This is the thread where I first heard about the super glue and baking soda trick from Grumpy old man. Both the top mounting ears were broken off of my radiator shroud and I finally got around to fixing it last weekend. Near the bottom of the shroud it had some minor broken up areas, and I removed a small piece of the plastic from there to make new ears. Super glue and baking soda, it sure is great. I've used it to repair a lot of stuff around the house and a few things on the truck.



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