? What type of seal for engine compartment noise reduction?

[ReggieCFL]

I’m finally ready to tackle noise reduction and thought I saw a post with a specific weather trip recommended for the engine compartment that would not interfere with it closing properly, but I can’t find it now. Does anyone have a recommendation on the best weather strip product to seal the engine hatch to reduce noise? Thanks in advance!

 

[kgower]

I’m finally ready to tackle noise reduction and thought I saw a post with a specific weather trip recommended for the engine compartment that would not interfere with it closing properly, but I can’t find it now. Does anyone have a recommendation on the best weather strip product to seal the engine hatch to reduce noise? Thanks in advance!

search YT for Jeff's Jetboat he has video on pipe insulation.

 

[JBehrens]

I used a garage door trim on my boat but have seen pipe insulation that is supposed to work better. https://www.menards.com/main/plumbi...ipe-insulation/iprst07812/p-1444435954535.htm

 

[AZMark]

@swatski posted about good results with a garage door gasket.

I’ve had the same one sitting in my garage for a year and haven’t put it on so can’t comment on how well it works.

 

[tabbibus]

@swatski posted about good results with a garage door gasket.

I’ve had the same one sitting in my garage for a year and haven’t put it on so can’t comment on how well it works.

Man. I hear you. I started and only did like 3 feet. Got busy and never finished it

 

[Seattle-Wind]

Has anyone tried the above method of pipe insulation on the 19’ boats and had good success?

 

[ReggieCFL]

search YT for Jeff's Jetboat he has video on pipe insulation.

Awesome thanks!

 

[ReggieCFL]

I used a garage door trim on my boat but have seen pipe insulation that is supposed to work better. https://www.menards.com/main/plumbi...ipe-insulation/iprst07812/p-1444435954535.htm

Thanks! I’m on it this weekend!

 

[Ronnie]

I started with pipe insulation and it worked well for the first season but compressed and didn’t decompress during the first off season. I ended up replacing it with “D” shaped 5/5” x 3/8” (20seal from McMaster Carr. I don’t recall the thickness but glad I went with the 3m adhesive backed variant.

McMaster-Carr

McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.

www.mcmaster.com

 

[TimW451]

I did this:

https://jetboaters.net/threads/the-official-what-did-you-do-to-your-jet-boat-today-thread.2661/post-533661

Qualitatively it has helped. Quantitatively my science is poor. After doing it, the sound level at the seat above the batteries is ~70 db @ 5k rpm. Before, I think, it was ~80 db, but I didn’t write that one down.

I would run the insulation along the vertical part I skipped. I’ve added it to the lower ~4” where I had fiberglass rubbing.

 

[kgower]

Has anyone tried the above method of pipe insulation on the 19’ boats and had good success?

I will probably pick up the insulation this weekend. Don't know if I'll have time to install it.

 

[Julian]

I started with pipe insulation and it worked well for the first season but compressed and didn’t decompress during the first off season. I ended up replacing it with “D” shaped 5/5” x 3/8” (20seal from McMaster Carr. I don’t recall the thickness but glad I went with the 3m adhesive backed variant.

McMaster-Carr

McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.

www.mcmaster.com

View attachment 177232

View attachment 177237

Can you find the invoice for what you bought? Going to put this on my list of to dos, and want to get the best width and weight. I can see this stuff working FAR better than pipe insulation - that approach seems like using the wrong material just because it was laying around. The foam needs to be strong and bounce back, pipe insulation crushes to easily.

 

[johnso30]

I went with garage door seal. Very easy to install with the self-adhesive. Just put it on towards the end of the season, so will see how it lasts…
Duck Brand Heavy-Duty Rubber Garage Door Bottom Seal, Black, 2-Inch x 1/4-Inch x 9-Feet, 1 Seal, 281232 Duck Brand Heavy-Duty Rubber Garage Door Bottom Seal, Black, 2-Inch x 1/4-Inch x 9-Feet, 1 Seal, 281232 - Automotive Metal Cleaners - Amazon.com

 

[Cambo]

I used the garage door seal and the 3M 90 adhesive releases from it they are not compatible

 

[AZMark]

I used the garage door seal and the 3M 90 adhesive releases from it they are not compatible

Did you find anything else that worked?

I bought weatherstrip adhesive that I haven’t tried yet. Hopefully that will stick to it.

 

[tabbibus]

I used spray adhesive. Worked fine

3M Hi-Strength 90 Spray Adhesive, Permanent, Bonds Laminate, Wood, Concrete, Metal, Plastic, Clear Glue, Net Wt 12.23 oz 3M Hi-Strength 90 Spray Adhesive, Permanent, Bonds Laminate, Wood, Concrete, Metal, Plastic, Clear Glue, Net Wt 12.23 oz: Amazon.com: Industrial & Scientific

 

[Cambo]

I was going to drill holes and use retainer clips but the fiberglass makes a mess

https://www.amazon.com/Dophee-Fastener-Retainers-Insulation-Plastic/dp/B01DETDKLO/ref=asc_df_B01DETDKLO/?tag=hyprod-20&linkCode=df0&hvadid=191929022594&hvpos=&hvnetw=g&hvrand=9614768226290421722&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9004572&hvtargid=pla-309781252223&psc=1

 

[Cambo]

when i used the 3m 90 I sprayed both surfaces separate let them tack up then placed sections in. Every part that releases 100% of the 3m is stuck on the gel coat nothing on the door seal. Maybe it has some type of release agent so the gasket doesnt stick to the garage floor. Its on but not good and needs repeated applications

 

[Ronnie]

Can you find the invoice for what you bought? Going to put this on my list of to dos, and want to get the best width and weight. I can see this stuff working FAR better than pipe insulation - that approach seems like using the wrong material just because it was laying around. The foam needs to be strong and bounce back, pipe insulation crushes to easily.

No way on the invoice but according to my original post on the subject I got 5/8” x 5/8” material and 3m (good stuff) backing. The thickeness you go with will depend on the distance to the bottom of the engine hatch, mine has a lot of aftermarket insulation on it so i must have gone thinner. Using pipe insulation as a guide is not a bad idea. Buy different sizes and see which will be tight but still allow you to close the compartment. For as little as it cost me it had lasted a long time, over 5 years and counting.

 

[ReggieCFL]

I started with pipe insulation and it worked well for the first season but compressed and didn’t decompress during the first off season. I ended up replacing it with “D” shaped 5/5” x 3/8” (20seal from McMaster Carr. I don’t recall the thickness but glad I went with the 3m adhesive backed variant.

McMaster-Carr

McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.

www.mcmaster.com

View attachment 177232

View attachment 177237

Awesome, that looks like the way to go